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12. Association of Apolipoprotein E With Intracerebral Hemorrhage Risk by Race/Ethnicity A Meta-analysis

Author

Marini, S, Crawford, K, Morotti, A, Lee, MJ, Pezzini, A, Moomaw, CJ, Flaherty, ML, Montaner, J, Roquer, J, Jimenez-Conde, J, Giralt-Steinhauer, E, Elosua, R, Cuadrado-Godia, E, Soriano-Tarraga, C, Slowik, A, Jagiella, JM, Pera, J, Urbanik, A, Pichler, A, Hansen, BM, McCauley, JL, Tirschwell, DL, Selim, M, Brown, DL, Silliman, SL, Worrall, BB, Meschia, JF, Kidwell, CS, Testai, FD, Kittner, SJ, Schmidt, H, Enzinger, C, Deary, LJ, Rannikmae, K, Samarasekera, N, Salman, RA-S, Sudlow, CL, Klijn, CJM, van Nieuwenhuizen, KM, Fernandez-Cadenas, I, Delgado, P, Nonving, B, Lindgren, A, Goldstein, JN, Viswanathan, A, Greenberg, SM, Falcone, GJ, Biffi, A, Langefeld, CD, Woo, D, Rosand, J, Anderson, CD, Smoller, S, Sorkin, J, Wang, X, Pikula, A, Wolf, P, Debette, S, Seshadri, S, de Bakker, P, Chasman, D, Rexrode, K, Chen, I, Rotter, J, Luke, M, Sale, M, Lee, T-H, Chang, K-C, Elkind, M, Goldstein, L, James, ML, Breteler, M, O'Donnell, C, Leys, D, Carty, C, Kidwell, C, Olesen, J, Sharma, P, Rich, S, Tatlisumak, T, Happola, O, Bijlenga, P, Soriano, C, Giralt, E, Cotlarcius, L, Hardy, J, Korostynski, M, Boncoraglio, G, Ballabio, E, Parati, E, Mateusz, A, Dziedzic, T, Jagiella, J, Gasowski, J, Wnuk, M, Olszanecki, R, Juchniewicz, KJ, Levi, C, Nyquist, P, Cendes, I, Cabral, N, Franca, P, Goncalves, A, Keller, L, Crisby, M, Kostulas, K, Lennnnens, R, Ahmadi, K, Opherk, C, Duering, M, Dichgans, M, Malik, R, Gonik, M, Staals, J, Melander, O, Burri, P, Sadr-Nabavi, A, Romero, J, Anderson, C, Falcone, G, Brouwers, B, Rost, N, Du, R, Kourkoulis, C, Battey, T, Lubitz, S, Mueller-Myhsok, B, Meschia, J, Brott, T, Pare, G, Schmidt, R, Seiler, S, Blanton, S, Yamada, Y, Bersano, A, Rundek, T, Sacco, R, Chan, Y-FY, Gschwendtner, A, Deng, Z, Barr, T, Gwinn, K, Corriveau, R, Singleton, A, Waddy, S, Launer, L, Chen, C, Le, KE, Lee, WL, Tan, EK, Olugbodi, A, Rothwell, P, Schilling, S, Mok, V, Lebedeva, E, Jem, C, Jood, K, Olsson, S, Kim, H, Lee, C, Kilarski, L, Markus, H, Peycke, J, Bevan, S, Sheu, W, Chiou, HY, Chern, J, Giraldo, E, Taqi, M, Jain, V, Lam, O, Howard, G, Kittner, S, Mitchell, B, Cole, J, O'Connell, J, Milewicz, D, Illoh, K, Worrall, B, Stine, C, Karaszewski, B, Werring, D, Sofat, R, Smalley, J, Hansen, B, Norrving, B, Smith, G, Martin, JJ, Thijs, V, Klijn, K, van't Hof, F, Algra, A, Macleod, M, Perry, R, Arnett, D, Padovani, A, Cramer, S, Fisher, M, Saleheen, D, Broderick, J, Kissela, B, Doney, A, Sudlow, C, Silliman, S, McDonough, C, Walters, M, Pedersen, A, Nakagawa, K, Chang, C, Dobbins, M, McArdle, P, Chang, Y-C, Brown, R, Brown, D, Holliday, E, Kalaria, R, Maguire, J, Hunter, J, Attia, J, Farrall, M, Giese, A-K, Fomage, M, Majersik, J, Cushman, M, Keene, K, Bennett, S, Tirschwell, D, Psaty, B, Reiner, A, Longstreth, W, Spence, D, Langefeld, C, Bushnell, C, Heitsch, L, Lee, J-M, Sheth, K, Marini, S, Crawford, K, Morotti, A, Lee, MJ, Pezzini, A, Moomaw, CJ, Flaherty, ML, Montaner, J, Roquer, J, Jimenez-Conde, J, Giralt-Steinhauer, E, Elosua, R, Cuadrado-Godia, E, Soriano-Tarraga, C, Slowik, A, Jagiella, JM, Pera, J, Urbanik, A, Pichler, A, Hansen, BM, McCauley, JL, Tirschwell, DL, Selim, M, Brown, DL, Silliman, SL, Worrall, BB, Meschia, JF, Kidwell, CS, Testai, FD, Kittner, SJ, Schmidt, H, Enzinger, C, Deary, LJ, Rannikmae, K, Samarasekera, N, Salman, RA-S, Sudlow, CL, Klijn, CJM, van Nieuwenhuizen, KM, Fernandez-Cadenas, I, Delgado, P, Nonving, B, Lindgren, A, Goldstein, JN, Viswanathan, A, Greenberg, SM, Falcone, GJ, Biffi, A, Langefeld, CD, Woo, D, Rosand, J, Anderson, CD, Smoller, S, Sorkin, J, Wang, X, Pikula, A, Wolf, P, Debette, S, Seshadri, S, de Bakker, P, Chasman, D, Rexrode, K, Chen, I, Rotter, J, Luke, M, Sale, M, Lee, T-H, Chang, K-C, Elkind, M, Goldstein, L, James, ML, Breteler, M, O'Donnell, C, Leys, D, Carty, C, Kidwell, C, Olesen, J, Sharma, P, Rich, S, Tatlisumak, T, Happola, O, Bijlenga, P, Soriano, C, Giralt, E, Cotlarcius, L, Hardy, J, Korostynski, M, Boncoraglio, G, Ballabio, E, Parati, E, Mateusz, A, Dziedzic, T, Jagiella, J, Gasowski, J, Wnuk, M, Olszanecki, R, Juchniewicz, KJ, Levi, C, Nyquist, P, Cendes, I, Cabral, N, Franca, P, Goncalves, A, Keller, L, Crisby, M, Kostulas, K, Lennnnens, R, Ahmadi, K, Opherk, C, Duering, M, Dichgans, M, Malik, R, Gonik, M, Staals, J, Melander, O, Burri, P, Sadr-Nabavi, A, Romero, J, Anderson, C, Falcone, G, Brouwers, B, Rost, N, Du, R, Kourkoulis, C, Battey, T, Lubitz, S, Mueller-Myhsok, B, Meschia, J, Brott, T, Pare, G, Schmidt, R, Seiler, S, Blanton, S, Yamada, Y, Bersano, A, Rundek, T, Sacco, R, Chan, Y-FY, Gschwendtner, A, Deng, Z, Barr, T, Gwinn, K, Corriveau, R, Singleton, A, Waddy, S, Launer, L, Chen, C, Le, KE, Lee, WL, Tan, EK, Olugbodi, A, Rothwell, P, Schilling, S, Mok, V, Lebedeva, E, Jem, C, Jood, K, Olsson, S, Kim, H, Lee, C, Kilarski, L, Markus, H, Peycke, J, Bevan, S, Sheu, W, Chiou, HY, Chern, J, Giraldo, E, Taqi, M, Jain, V, Lam, O, Howard, G, Kittner, S, Mitchell, B, Cole, J, O'Connell, J, Milewicz, D, Illoh, K, Worrall, B, Stine, C, Karaszewski, B, Werring, D, Sofat, R, Smalley, J, Hansen, B, Norrving, B, Smith, G, Martin, JJ, Thijs, V, Klijn, K, van't Hof, F, Algra, A, Macleod, M, Perry, R, Arnett, D, Padovani, A, Cramer, S, Fisher, M, Saleheen, D, Broderick, J, Kissela, B, Doney, A, Sudlow, C, Silliman, S, McDonough, C, Walters, M, Pedersen, A, Nakagawa, K, Chang, C, Dobbins, M, McArdle, P, Chang, Y-C, Brown, R, Brown, D, Holliday, E, Kalaria, R, Maguire, J, Hunter, J, Attia, J, Farrall, M, Giese, A-K, Fomage, M, Majersik, J, Cushman, M, Keene, K, Bennett, S, Tirschwell, D, Psaty, B, Reiner, A, Longstreth, W, Spence, D, Langefeld, C, Bushnell, C, Heitsch, L, Lee, J-M, and Sheth, K

Published
2019

13. The basic helix-loop-helix transcription factor SHARP1 is an oncogenic driver in MLL-AF6 acute myelogenous leukemia

Author

Numata, A. (Akihiko), Kwok, H.S. (Hui Si), Kawasaki, A. (Akira), Li, J. (Jia), Zhou, Q.-L. (Qi-Ling), Kerry, J. (Jon), Benoukraf, T. (Touati), Bararia, D. (Deepak), Li, F. (Feng), Ballabio, E. (Erica), Tapia, M. (Marta), Deshpande, A.J. (Aniruddha J.), Welner, R.S. (Robert), Delwel, R. (Ruud), Yang, H. (Henry), Milne, T.A. (Thomas), Taneja, R. (Reshma), Tenen, D.G. (Daniel), Numata, A. (Akihiko), Kwok, H.S. (Hui Si), Kawasaki, A. (Akira), Li, J. (Jia), Zhou, Q.-L. (Qi-Ling), Kerry, J. (Jon), Benoukraf, T. (Touati), Bararia, D. (Deepak), Li, F. (Feng), Ballabio, E. (Erica), Tapia, M. (Marta), Deshpande, A.J. (Aniruddha J.), Welner, R.S. (Robert), Delwel, R. (Ruud), Yang, H. (Henry), Milne, T.A. (Thomas), Taneja, R. (Reshma), and Tenen, D.G. (Daniel)

Abstract

Acute Myeloid Leukemia (AML) with MLL gene rearrangements demonstrate unique gene expression profiles driven by MLL-fusion proteins. Here, we identify the circadian clock transcription factor SHARP1 as a novel oncogenic target in MLL-AF6 AML, which has the worst prognosis among all subtypes of MLL-rearranged AMLs. SHARP1 is expressed solely in MLL-AF6 AML, and its expression is regulated directly by MLL-AF6/DOT1L. Suppression of SHARP1 induces robust apoptosis of human MLL-AF6 AML cells. Genetic deletion in mice delays the development of leukemia and attenuated leukemia-initiating potential, while sparing normal hematopoiesis. Mechanistically, SHARP1 binds to transcriptionally active chromatin across the genome and activates genes critical for cell survival as well as key oncogenic targets of MLL-AF6. Our findings demonstrate the unique oncogenic role for SHARP1 in MLL-AF6 AML.

Published
2018
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14. Atrial fibrillation genetic risk differentiates cardioembolic stroke from other stroke subtypes

Author

Pulit, SL, Weng, L-C, McArdle, PF, Trinquart, L, Choi, SH, Mitchell, BD, Rosand, J, de Bakker, PIW, Benjamin, EJ, Ellinor, PT, Kittner, SJ, Lubitz, SA, Anderson, CD, Christophersen, IE, Rienstra, M, Roselli, C, Yin, X, Geelhoed, B, Barnard, J, Lin, H, Arking, DE, Smith, A, Albert, CM, Chaffin, M, Tucker, NR, Li, M, Klarin, D, Bihlmeyer, NA, Low, S-K, Weeke, PE, Mueller-Nurasyid, M, Smith, JG, Brody, JA, Niemeijer, MN, Doerr, M, Trompet, S, Huffman, J, Gustafsson, S, Schurmann, C, Kleber, ME, Lyytikainen, L-P, Seppala, I, Malik, R, Horimoto, ARVR, Perez, M, Sinisalo, J, Aeschbacher, S, Theriault, S, Yao, J, Radmanesh, F, Weiss, S, Teumer, A, Clauss, S, Deo, R, Rader, DJ, Shah, S, Sun, A, Hopewell, JC, Debette, S, Chauhan, G, Yang, Q, Worrall, BB, Pare, G, Kamatani, Y, Hagemeijer, YP, Verweij, N, Siland, JE, Kubo, M, Smith, JD, Van Wagoner, DR, Bis, JC, Perz, S, Psaty, BM, Ridker, PM, Magnani, JW, Harris, TB, Launer, LJ, Shoemaker, MB, Padmanabhan, S, Haessler, J, Bartz, TM, Waldenberger, M, Lichtner, P, Arendt, M, Krieger, JE, Kahonen, M, Risch, L, Mansur, AJ, Peters, A, Smith, BH, Lind, L, Scott, SA, Lu, Y, Bottinger, EB, Hernesniemi, J, Lindgren, CM, Wong, JA, Huang, J, Eskola, M, Morris, AP, Ford, I, Reiner, AP, Delgado, G, Chen, LY, Chen, Y-DI, Sandhu, RK, Boerwinkle, E, Eisele, L, Lannfelt, L, Rost, N, Taylor, KD, Campbell, A, Magnusson, PK, Porteous, D, Hocking, LJ, Vlachopoulou, E, Pedersen, NL, Nikus, K, Orho-Melander, M, Hamsten, A, Heeringa, J, Denny, JC, Kriebel, J, Darbar, D, Newton-Cheh, C, Shaffer, C, Macfarlane, PW, Heilmann, S, Almgren, P, Huang, PL, Sotoodehnia, N, Soliman, EZ, Uitterlinden, AG, Hofman, A, Franco, OH, Voelker, U, Joeckel, K-H, Sinner, MF, Lin, HJ, Guo, X, Dichgans, M, Ingelsson, E, Kooperberg, C, Melander, O, Loos, RJF, Laurikka, J, Conen, D, van der Harst, P, Lokki, M-L, Kathiresan, S, Pereira, A, Jukema, JW, Hayward, C, Rotter, J, Maerz, W, Lehtimaki, T, Stricker, BH, Chung, MK, Felix, SB, Gudnason, V, Alonso, A, Roden, DM, Kaeaeb, S, Chasman, D, Heckbert, SR, Tanaka, T, Lunetta, KL, Smoller, S, Sorkin, J, Wang, X, Selim, M, Pikula, A, Wolf, P, Seshadri, S, de Bakker, P, Rexrode, K, Chen, I, Luke, M, Sale, M, Lee, T-H, Chang, K-C, Elkind, M, Goldstein, L, James, ML, Breteler, M, O'Donnell, C, Leys, D, Carty, C, Kidwell, C, Olesen, J, Sharma, P, Rich, S, Tatlisumak, T, Happola, O, Bijlenga, P, Soriano, C, Giralt, E, Roquer, J, Jimenez-Conde, J, Cotlarcius, I, Hardy, J, Korostynski, M, Boncoraglio, G, Ballabio, E, Parati, E, Mateusz, A, Urbanik, A, Dziedzic, T, Jagiella, J, Gasowski, J, Wnuk, M, Olszanecki, R, Pera, J, Slowik, A, Juchniewicz, KJ, Levi, C, Nyquist, P, Cendes, I, Cabral, N, Franca, P, Goncalves, A, Keller, L, Crisby, M, Kostulas, K, Lemmens, R, Ahmadi, K, Opherk, C, Duering, M, Gonik, M, Staals, J, Burri, P, Sadr-Nabavi, A, Romero, J, Biffi, A, Anderson, C, Falcone, G, Brouwers, B, Du, R, Kourkoulis, C, Battey, T, Lubitz, S, Mueller-Myhsok, B, Meschia, J, Brott, T, Pichler, A, Enzinger, C, Schmidt, H, Schmidt, R, Seiler, S, Blanton, S, Yamada, Y, Bersano, A, Rundek, T, Sacco, R, Chan, Y-FY, Gschwendtner, A, Deng, Z, Barr, T, Gwinn, K, Corriveau, R, Singleton, A, Waddy, S, Launer, L, Chen, C, Le, KE, Lee, WL, Tan, EK, Olugbodi, A, Rothwell, P, Schilling, S, Mok, V, Lebedeva, E, Jern, C, Jood, K, Olsson, S, Kim, H, Lee, C, Kilarski, L, Markus, H, Peycke, J, Bevan, S, Sheu, W, Chiou, HY, Chern, J, Giraldo, E, Taqi, M, Jain, V, Lam, O, Howard, G, Woo, D, Kittner, S, Mitchell, B, Cole, J, O'Connell, J, Milewicz, D, Illoh, K, Worrall, B, Stine, C, Karaszewski, B, Werring, D, Sofat, R, Smalley, J, Lindgren, A, Hansen, B, Norrving, B, Smith, G, Jose Martin, J, Thijs, V, Klijn, K, van't Hof, F, Algra, A, Macleod, M, Perry, R, Arnett, D, Pezzini, A, Padovani, A, Cramer, S, Fisher, M, Saleheen, D, Broderick, J, Kissela, B, Doney, A, Sudlow, C, Rannikmae, K, Silliman, S, McDonough, C, Walters, M, Pedersen, A, Nakagawa, K, Chang, C, Dobbins, M, McArdle, P, Chang, Y-C, Brown, R, Brown, D, Holliday, E, Kalaria, R, Maguire, J, Attia, J, Farrall, M, Giese, A-K, Fornage, M, Majersik, J, Cushman, M, Keene, K, Bennett, S, Tirschwell, D, Psaty, B, Reiner, A, Longstreth, W, Spence, D, Montaner, J, Fernandez-Cadenas, I, Langefeld, C, Bushnell, C, Heitsch, L, Lee, J-M, Sheth, K, Pulit, SL, Weng, L-C, McArdle, PF, Trinquart, L, Choi, SH, Mitchell, BD, Rosand, J, de Bakker, PIW, Benjamin, EJ, Ellinor, PT, Kittner, SJ, Lubitz, SA, Anderson, CD, Christophersen, IE, Rienstra, M, Roselli, C, Yin, X, Geelhoed, B, Barnard, J, Lin, H, Arking, DE, Smith, A, Albert, CM, Chaffin, M, Tucker, NR, Li, M, Klarin, D, Bihlmeyer, NA, Low, S-K, Weeke, PE, Mueller-Nurasyid, M, Smith, JG, Brody, JA, Niemeijer, MN, Doerr, M, Trompet, S, Huffman, J, Gustafsson, S, Schurmann, C, Kleber, ME, Lyytikainen, L-P, Seppala, I, Malik, R, Horimoto, ARVR, Perez, M, Sinisalo, J, Aeschbacher, S, Theriault, S, Yao, J, Radmanesh, F, Weiss, S, Teumer, A, Clauss, S, Deo, R, Rader, DJ, Shah, S, Sun, A, Hopewell, JC, Debette, S, Chauhan, G, Yang, Q, Worrall, BB, Pare, G, Kamatani, Y, Hagemeijer, YP, Verweij, N, Siland, JE, Kubo, M, Smith, JD, Van Wagoner, DR, Bis, JC, Perz, S, Psaty, BM, Ridker, PM, Magnani, JW, Harris, TB, Launer, LJ, Shoemaker, MB, Padmanabhan, S, Haessler, J, Bartz, TM, Waldenberger, M, Lichtner, P, Arendt, M, Krieger, JE, Kahonen, M, Risch, L, Mansur, AJ, Peters, A, Smith, BH, Lind, L, Scott, SA, Lu, Y, Bottinger, EB, Hernesniemi, J, Lindgren, CM, Wong, JA, Huang, J, Eskola, M, Morris, AP, Ford, I, Reiner, AP, Delgado, G, Chen, LY, Chen, Y-DI, Sandhu, RK, Boerwinkle, E, Eisele, L, Lannfelt, L, Rost, N, Taylor, KD, Campbell, A, Magnusson, PK, Porteous, D, Hocking, LJ, Vlachopoulou, E, Pedersen, NL, Nikus, K, Orho-Melander, M, Hamsten, A, Heeringa, J, Denny, JC, Kriebel, J, Darbar, D, Newton-Cheh, C, Shaffer, C, Macfarlane, PW, Heilmann, S, Almgren, P, Huang, PL, Sotoodehnia, N, Soliman, EZ, Uitterlinden, AG, Hofman, A, Franco, OH, Voelker, U, Joeckel, K-H, Sinner, MF, Lin, HJ, Guo, X, Dichgans, M, Ingelsson, E, Kooperberg, C, Melander, O, Loos, RJF, Laurikka, J, Conen, D, van der Harst, P, Lokki, M-L, Kathiresan, S, Pereira, A, Jukema, JW, Hayward, C, Rotter, J, Maerz, W, Lehtimaki, T, Stricker, BH, Chung, MK, Felix, SB, Gudnason, V, Alonso, A, Roden, DM, Kaeaeb, S, Chasman, D, Heckbert, SR, Tanaka, T, Lunetta, KL, Smoller, S, Sorkin, J, Wang, X, Selim, M, Pikula, A, Wolf, P, Seshadri, S, de Bakker, P, Rexrode, K, Chen, I, Luke, M, Sale, M, Lee, T-H, Chang, K-C, Elkind, M, Goldstein, L, James, ML, Breteler, M, O'Donnell, C, Leys, D, Carty, C, Kidwell, C, Olesen, J, Sharma, P, Rich, S, Tatlisumak, T, Happola, O, Bijlenga, P, Soriano, C, Giralt, E, Roquer, J, Jimenez-Conde, J, Cotlarcius, I, Hardy, J, Korostynski, M, Boncoraglio, G, Ballabio, E, Parati, E, Mateusz, A, Urbanik, A, Dziedzic, T, Jagiella, J, Gasowski, J, Wnuk, M, Olszanecki, R, Pera, J, Slowik, A, Juchniewicz, KJ, Levi, C, Nyquist, P, Cendes, I, Cabral, N, Franca, P, Goncalves, A, Keller, L, Crisby, M, Kostulas, K, Lemmens, R, Ahmadi, K, Opherk, C, Duering, M, Gonik, M, Staals, J, Burri, P, Sadr-Nabavi, A, Romero, J, Biffi, A, Anderson, C, Falcone, G, Brouwers, B, Du, R, Kourkoulis, C, Battey, T, Lubitz, S, Mueller-Myhsok, B, Meschia, J, Brott, T, Pichler, A, Enzinger, C, Schmidt, H, Schmidt, R, Seiler, S, Blanton, S, Yamada, Y, Bersano, A, Rundek, T, Sacco, R, Chan, Y-FY, Gschwendtner, A, Deng, Z, Barr, T, Gwinn, K, Corriveau, R, Singleton, A, Waddy, S, Launer, L, Chen, C, Le, KE, Lee, WL, Tan, EK, Olugbodi, A, Rothwell, P, Schilling, S, Mok, V, Lebedeva, E, Jern, C, Jood, K, Olsson, S, Kim, H, Lee, C, Kilarski, L, Markus, H, Peycke, J, Bevan, S, Sheu, W, Chiou, HY, Chern, J, Giraldo, E, Taqi, M, Jain, V, Lam, O, Howard, G, Woo, D, Kittner, S, Mitchell, B, Cole, J, O'Connell, J, Milewicz, D, Illoh, K, Worrall, B, Stine, C, Karaszewski, B, Werring, D, Sofat, R, Smalley, J, Lindgren, A, Hansen, B, Norrving, B, Smith, G, Jose Martin, J, Thijs, V, Klijn, K, van't Hof, F, Algra, A, Macleod, M, Perry, R, Arnett, D, Pezzini, A, Padovani, A, Cramer, S, Fisher, M, Saleheen, D, Broderick, J, Kissela, B, Doney, A, Sudlow, C, Rannikmae, K, Silliman, S, McDonough, C, Walters, M, Pedersen, A, Nakagawa, K, Chang, C, Dobbins, M, McArdle, P, Chang, Y-C, Brown, R, Brown, D, Holliday, E, Kalaria, R, Maguire, J, Attia, J, Farrall, M, Giese, A-K, Fornage, M, Majersik, J, Cushman, M, Keene, K, Bennett, S, Tirschwell, D, Psaty, B, Reiner, A, Longstreth, W, Spence, D, Montaner, J, Fernandez-Cadenas, I, Langefeld, C, Bushnell, C, Heitsch, L, Lee, J-M, and Sheth, K

Abstract

OBJECTIVE: We sought to assess whether genetic risk factors for atrial fibrillation (AF) can explain cardioembolic stroke risk. METHODS: We evaluated genetic correlations between a previous genetic study of AF and AF in the presence of cardioembolic stroke using genome-wide genotypes from the Stroke Genetics Network (N = 3,190 AF cases, 3,000 cardioembolic stroke cases, and 28,026 referents). We tested whether a previously validated AF polygenic risk score (PRS) associated with cardioembolic and other stroke subtypes after accounting for AF clinical risk factors. RESULTS: We observed a strong correlation between previously reported genetic risk for AF, AF in the presence of stroke, and cardioembolic stroke (Pearson r = 0.77 and 0.76, respectively, across SNPs with p < 4.4 × 10-4 in the previous AF meta-analysis). An AF PRS, adjusted for clinical AF risk factors, was associated with cardioembolic stroke (odds ratio [OR] per SD = 1.40, p = 1.45 × 10-48), explaining ∼20% of the heritable component of cardioembolic stroke risk. The AF PRS was also associated with stroke of undetermined cause (OR per SD = 1.07, p = 0.004), but no other primary stroke subtypes (all p > 0.1). CONCLUSIONS: Genetic risk of AF is associated with cardioembolic stroke, independent of clinical risk factors. Studies are warranted to determine whether AF genetic risk can serve as a biomarker for strokes caused by AF.

Published
2018

15. The role of clinical and neuroimaging features in the diagnosis of CADASIL

Author

Bersano, A, Bedini, G, Markus, H, Vitali, P, Colli-Tibaldi, E, Taroni, F, Gellera, C, Baratta, S, Mosca, L, Carrera, P, Ferrari, M, Cereda, C, Grieco, G, Lanfranconi, S, Mazucchelli, F, Zarcone, D, De Lodovici, M, Bono, G, Boncoraglio, G, Parati, E, Calloni, M, Perrone, P, Bordo, B, Motto, C, Agostoni, E, Pezzini, A, Padovani, A, Micieli, G, Cavallini, A, Molini, G, Sasanelli, F, Sessa, M, Comi, G, Checcarelli, N, Carmerlingo, M, Corato, M, Marcheselli, S, Fusi, L, Grampa, G, Uccellini, D, Beretta, S, Ferrarese, C, Incorvaia, B, Tadeo, C, Adobbati, L, Silani, V, Faragò, G, Trobia, N, Grond-Ginsbach, C, Candelise, L, Mazzucchelli, F, Guidotti, M, Riva, M, Iurlaro, S, Maria, B, Braga, M, Meola, G, Carpo, M, Camerlingo, M, Borutti, G, Delodovici, M, Verrengia, E, Tancredi, L, Terruzzi, A, Magoni, M, Del Zotto, E, Bassi, P, Lattuada, P, Ballabio, E, Gambaro, P, Corrà, B, Canavero, I, Arbustini, E, Grasso, M, Corti, S, Ronchi, D, Merlini, G, Obici, L, Bassi, M, Tagliavini, F, Ginsbach, C, Bersano, Anna, BEDINI, GLORIA, Markus, Hugh Stephen, Vitali, Paolo, Colli-Tibaldi, Enrico, Taroni, Franco, Gellera, Cinzia, Baratta, Silvia, Mosca, Lorena, Carrera, Paola, FERRARI, MAURIZIO, Cereda, Cristina, Grieco, Gaetano, Lanfranconi, Silvia, Mazucchelli, Franca, Zarcone, Davide, De Lodovici, Maria Luisa, Bono, Giorgio, Boncoraglio, Giorgio Battista, Parati, Eugenio Agostino, Calloni, Maria Vittoria, Perrone, Patrizia, Bordo, Bianca Maria, Motto, Cristina, Agostoni, Elio, Pezzini, Alessandro, Padovani, Alessandro, Micieli, Giuseppe, Cavallini, Anna, Molini, Graziella, Sasanelli, Francesco, Sessa, Maria, Comi, Giancarlo, Checcarelli, Nicoletta, Carmerlingo, Massimo, CORATO, MANUEL, Marcheselli, Simona, Fusi, Laura, Grampa, Giampiero, Uccellini, Davide, Beretta, Simone, Ferrarese, Carlo, Incorvaia, Barbara, Tadeo, Carlo Sebastiano, Adobbati, Laura, Silani, Vincenzo, Faragò, Giuseppe, Trobia, Nadia, Grond-Ginsbach, Caspar, Candelise, Livia, Mazzucchelli, Franca, Guidotti, Mario, Riva, Maurizio, Iurlaro, Simona, Maria, Bianca Bordo, Braga, Massimiliano, Meola, Giovanni, Carpo, Marinella, Camerlingo, Massimo, Borutti, Giuseppina, Delodovici, Marialuisa, Verrengia, Elena Pinuccia, Tancredi, Lucia, Terruzzi, Alessandro, Magoni, Mauro, Del Zotto, Elisabetta, Bassi, Pietro, Lattuada, Patrizia, Ballabio, Elena, Gambaro, Paola, Lanfranconi, Sivia, Corrà, Barbara, Canavero, Isabella, Arbustini, Eloisa, Grasso, Maurizia, Comi, Giacomo Pietro, Corti, Stefania, Ronchi, Dario, Merlini, Giampaolo, Obici, Laura, Bassi, Maria Teresa, Tagliavini, Fabrizio, Ginsbach, Caspar Grond, Bersano, A, Bedini, G, Markus, H, Vitali, P, Colli-Tibaldi, E, Taroni, F, Gellera, C, Baratta, S, Mosca, L, Carrera, P, Ferrari, M, Cereda, C, Grieco, G, Lanfranconi, S, Mazucchelli, F, Zarcone, D, De Lodovici, M, Bono, G, Boncoraglio, G, Parati, E, Calloni, M, Perrone, P, Bordo, B, Motto, C, Agostoni, E, Pezzini, A, Padovani, A, Micieli, G, Cavallini, A, Molini, G, Sasanelli, F, Sessa, M, Comi, G, Checcarelli, N, Carmerlingo, M, Corato, M, Marcheselli, S, Fusi, L, Grampa, G, Uccellini, D, Beretta, S, Ferrarese, C, Incorvaia, B, Tadeo, C, Adobbati, L, Silani, V, Faragò, G, Trobia, N, Grond-Ginsbach, C, Candelise, L, Mazzucchelli, F, Guidotti, M, Riva, M, Iurlaro, S, Maria, B, Braga, M, Meola, G, Carpo, M, Camerlingo, M, Borutti, G, Delodovici, M, Verrengia, E, Tancredi, L, Terruzzi, A, Magoni, M, Del Zotto, E, Bassi, P, Lattuada, P, Ballabio, E, Gambaro, P, Corrà, B, Canavero, I, Arbustini, E, Grasso, M, Corti, S, Ronchi, D, Merlini, G, Obici, L, Bassi, M, Tagliavini, F, Ginsbach, C, Bersano, Anna, BEDINI, GLORIA, Markus, Hugh Stephen, Vitali, Paolo, Colli-Tibaldi, Enrico, Taroni, Franco, Gellera, Cinzia, Baratta, Silvia, Mosca, Lorena, Carrera, Paola, FERRARI, MAURIZIO, Cereda, Cristina, Grieco, Gaetano, Lanfranconi, Silvia, Mazucchelli, Franca, Zarcone, Davide, De Lodovici, Maria Luisa, Bono, Giorgio, Boncoraglio, Giorgio Battista, Parati, Eugenio Agostino, Calloni, Maria Vittoria, Perrone, Patrizia, Bordo, Bianca Maria, Motto, Cristina, Agostoni, Elio, Pezzini, Alessandro, Padovani, Alessandro, Micieli, Giuseppe, Cavallini, Anna, Molini, Graziella, Sasanelli, Francesco, Sessa, Maria, Comi, Giancarlo, Checcarelli, Nicoletta, Carmerlingo, Massimo, CORATO, MANUEL, Marcheselli, Simona, Fusi, Laura, Grampa, Giampiero, Uccellini, Davide, Beretta, Simone, Ferrarese, Carlo, Incorvaia, Barbara, Tadeo, Carlo Sebastiano, Adobbati, Laura, Silani, Vincenzo, Faragò, Giuseppe, Trobia, Nadia, Grond-Ginsbach, Caspar, Candelise, Livia, Mazzucchelli, Franca, Guidotti, Mario, Riva, Maurizio, Iurlaro, Simona, Maria, Bianca Bordo, Braga, Massimiliano, Meola, Giovanni, Carpo, Marinella, Camerlingo, Massimo, Borutti, Giuseppina, Delodovici, Marialuisa, Verrengia, Elena Pinuccia, Tancredi, Lucia, Terruzzi, Alessandro, Magoni, Mauro, Del Zotto, Elisabetta, Bassi, Pietro, Lattuada, Patrizia, Ballabio, Elena, Gambaro, Paola, Lanfranconi, Sivia, Corrà, Barbara, Canavero, Isabella, Arbustini, Eloisa, Grasso, Maurizia, Comi, Giacomo Pietro, Corti, Stefania, Ronchi, Dario, Merlini, Giampaolo, Obici, Laura, Bassi, Maria Teresa, Tagliavini, Fabrizio, and Ginsbach, Caspar Grond

Abstract

Background: Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is the most common familial cerebral small vessel disease, caused by NOTCH3 gene mutations. The aim of our study was to identify clinical and neuroradiological features which would be useful in identifying which patients presenting with lacunar stroke and TIA are likely to have CADASIL. Methods: Patients with lacunar stroke or TIA were included in the present study. For each patient, demographic and clinical data were collected. MRI images were centrally analysed for the presence of lacunar infarcts, microbleeds, temporal lobe involvement, global atrophy and white matter hyperintensities. Results: 128 patients (mean age 56.3 ± 12.4 years) were included. A NOTCH3 mutation was found in 12.5% of them. A family history of stroke, the presence of dementia and external capsule lesions on MRI were the only features significantly associated with the diagnosis of CADASIL. Although thalamic, temporal pole gliosis and severe white matter hyperintensities were less specific for CADASIL diagnosis, the combination of a number of these factors together with familial history for stroke result in a higher positive predictive value and specificity. Conclusions: A careful familial history collection and neuroradiological assessment can identify patients in whom NOTCH3 genetic testing has a higher yield.

Published
2018

16. The basic helix-loop-helix transcription factor SHARP1 is an oncogenic driver in MLL-AF6 acute myelogenous leukemia

Author

Numata, A, Kwok, HS, Kawasaki, A, Li, J, Zhou, QL, Kerry, J, Benoukraf, T, Bararia, D, Li, F, Ballabio, E, Tapia, M, Deshpande, AJ, Welner, RS, Delwel, Ruud, Yang, H, Milne, TA, Taneja, R, Tenen, DG, Numata, A, Kwok, HS, Kawasaki, A, Li, J, Zhou, QL, Kerry, J, Benoukraf, T, Bararia, D, Li, F, Ballabio, E, Tapia, M, Deshpande, AJ, Welner, RS, Delwel, Ruud, Yang, H, Milne, TA, Taneja, R, and Tenen, DG

Published
2018

17. MLL-AF4 binds directly to a BCL-2 specific enhancer and modulates H3K27 acetylation

Author

Godfrey, L, Kerry, J, Thorne, R, Repapi, E, Davies, JOJ, Tapia, M, Ballabio, E, Hughes, JR, Geng, H, Konopleva, M, and Milne, T

Subjects
Cancer Research, hemic and lymphatic diseases, Genetics, Cell Biology, Hematology, neoplasms, Molecular Biology
Abstract

Survival rates for children and adults carrying mutations in the Mixed Lineage Leukemia (MLL) gene continue to have a very poor prognosis. The most common MLL mutation in ALL is the t(4;11)(q21;q23) chromosome translocation that fuses MLL in frame with the AF4 gene producing MLL-AF4 and AF4-MLL fusion proteins. Previously, we demonstrated that MLL-AF4 binds to the BCL-2 gene and directly activates it through DOT1L recruitment and increased H3K79me2/3 levels. Here, we perform a detailed analysis of MLL-AF4 regulation of the entire BCL-2 family. By measuring nascent RNA production in MLL-AF4 knockdowns, we find that of all the BCL-2 family genes, MLL-AF4 directly controls the active transcription of both BCL-2 and MCL-1, and also represses BIM via binding of the polycomb group repressor 1 (PRC1) complex component CBX8. We further analyze MLL-AF4 activation of the BCL-2 gene using Capture C and identify a BCL-2 specific enhancer, consisting of two clusters of H3K27Ac at the 3’end of the gene. Loss of MLL-AF4 activity results in a reduction of H3K79me3 levels in the gene body and H3K27Ac levels at the 3’ BCL-2 enhancer, revealing a novel regulatory link between these two histone marks and MLL-AF4 mediated activation of BCL-2.

Published
2017

19. Genome-wide meta-analysis of cerebral white matter hyperintensities in patients with stroke

Author

Traylor, M, Zhang, Cr, Adib Samii, P, Devan, Wj, Parsons, Oe, Lanfranconi, S, Gregory, S, Cloonan, L, Falcone, Gj, Radmanesh, F, Fitzpatrick, K, Kanakis, A, Barrick, Tr, Moynihan, B, Lewis, Cm, Boncoraglio, Gb, Lemmens, R, Thijs, V, Sudlow, C, Wardlaw, J, Rothwell, Pm, Meschia, Jf, Worrall, Bb, Levi, C, Bevan, S, Furie, Kl, Dichgans, M, Rosand, J, Markus, Hs, Rost, N, Smoller, S, Sorkin, J, Wang, X, Selim, M, Pikula, A, Wolf, P, Debette, S, Seshadri, S, de Bakker, P, Chasman, D, Rexrode, K, Chen, I, Rotter, J, Luke, M, Sale, M, Lee, Th, Chang, Kc, Elkind, M, Goldstein, L, James, Ml, Breteler, M, O'Donnell, C, Leys, D, Carty, C, Kidwell, C, Olesen, J, Sharma, P, Rich, S, Tatlisumak, T, Happola, O, Bijlenga, P, Soriano, C, Giralt, E, Roquer, J, Jimenez Conde, J, Cotlarcius, I, Hardy, J, Korostynski, M, Boncoraglio, G, Ballabio, E, Parati, E, Mateusz, A, Urbanik, A, Dziedzic, T, Jagiella, J, Gasowski, J, Wnuk, M, Olszanecki, R, Pera, J, Slowik, A, Juchniewicz, Kj, Nyquist, P, Cendes, I, Cabral, N, Franca, P, Goncalves, A, Keller, L, Crisby, M, Kostulas, K, Ahmadi, K, Opherk, C, Duering, M, Malik, R, Gonik, M, Staals, J, Melander, O, Burri, P, Sadr Nabavi, A, Romero, J, Biffi, A, Anderson, C, Falcone, G, Brouwers, B, Du, R, Kourkoulis, C, Battey, T, Lubitz, S, Mueller Myhsok, B, Meschia, J, Brott, T, Pare, G, Pichler, A, Enzinger, C, Schmidt, H, Schmidt, R, Seiler, S, Blanton, S, Yamada, Y, Bersano, A, Rundek, T, Sacco, R, Yvonne Chan, Yf, Gschwendtner, A, Deng, Z, Barr, T, Gwinn, K, Corriveau, R, Singleton, A, Waddy, S, Launer, L, Chen, C, Ke, Le, Lee, Wl, Tan, Ek, Olugbodi, A, Rothwell, P, Schilling, S, Mok, V, Lebedeva, E, Jern, C, Jood, K, Olsson, S, Kim, H, Lee, C, Kilarski, L, Markus, H, Peycke, J, Sheu, W, Chiou, Hy, Chern, J, Giraldo, E, Taqi, M, Jain, V, Lam, O, Howard, G, Woo, D, Kittner, S, Mitchell, B, Cole, J, O'Connell, J, Milewicz, D, Illoh, K, Worrall, B, Stine, C, Karaszewski, B, Werring, D, Sofat, R, Smalley, J, Lindgren, A, Hansen, B, Norrving, B, Smith, G, Martín, Jj, Klijn, K, Van't Hof, F, Algra, A, Macleod, M, Perry, R, Arnett, D, Pezzini, Alessandro, Padovani, Alessandro, Cramer, S, Fisher, M, Saleheen, D, Broderick, J, Kissela, B, Doney, A, Rannikmae, K, Silliman, S, Mcdonough, C, Walters, M, Pedersen, A, Nakagawa, K, Chang, C, Dobbins, M, Mcardle, P, Chang, Yc, Brown, R, Brown, D, Holliday, E, Kalaria, R, Maguire, J, Attia, J, Farrall, M, Giese, Ak, Fornage, M, Majersik, J, Cushman, M, Keene, K, Bennett, S, Tirschwell, D, Psaty, B, Reiner, A, Longstreth, W, Spence, D, Montaner, J, Fernandez Cadenas, I, Langefeld, C, Bushnell, C, Heitsch, L, Lee, Jm, and Sheth, K.

Subjects
Cerebral Small Vessel Diseases, Genetic Predisposition to Disease, Genetic Testing, Humans, Polymorphism, Single Nucleotide, Risk Factors, Stroke, White Matter, Genome-Wide Association Study, Neurology (clinical), Single Nucleotide, C420 Human Genetics, Article, C431 Medical Genetics, C400 Genetics, Polymorphism, C440 Molecular Genetics
Abstract

Objective: For 3,670 stroke patients from the United Kingdom, United States, Australia, Belgium, and Italy, we performed a genome-wide meta-analysis of white matter hyperintensity volumes (WMHV) on data imputed to the 1000 Genomes reference dataset to provide insights into disease mechanisms. Methods: We first sought to identify genetic associations with white matter hyperintensities in a stroke population, and then examined whether genetic loci previously linked to WMHV in community populations are also associated in stroke patients. Having established that genetic associations are shared between the 2 populations, we performed a meta-analysis testing which associations with WMHV in stroke-free populations are associated overall when combined with stroke populations. Results: There were no associations at genome-wide significance with WMHV in stroke patients. All previously reported genome-wide significant associations with WMHV in community populations shared direction of effect in stroke patients. In a meta-analysis of the genome-wide significant and suggestive loci (p Conclusions: Genetic associations with WMHV are shared in otherwise healthy individuals and patients with stroke, indicating common genetic susceptibility in cerebral small vessel disease.

Published
2016
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22. Intra-arterial or intravenous thrombolysis for acute ischemic stroke? The SYNTHESIS pilot trial

Author

Ciccone, A, Valvassori, L, Ponzio, M, Ballabio, E, Gasparotti, R, Sessa, M, Tiraboschi, P, Sterzi, R, Candelise, L, Del Zoppo, G, Sandercock, P, Cantisani, T, Coppola, C, Gatti, A, Guccione, A, Santilli, I, Jann, S., Protti, A., Rizzone, Mario Giorgio, Boccardi, E, Guidotti, M., Checcarelli, N, Muscia, F, Martegani, A, Magoni, M., Costa, A., Pavia, M, and Scomazzoni, F.

Subjects
Male, thrombolysis, Time Factors, ischemic stroke, randomized controlled trial, medicine.medical_treatment, Pilot Projects, law.invention, Brain Ischemia, Randomized controlled trial, law, Intra arterial, Medicine, Humans, Infusions, Intra-Arterial, Thrombolytic Therapy, Thrombus, Adverse effect, Infusions, Intravenous, Acute ischemic stroke, Aged, business.industry, Pilot trial, General Medicine, Thrombolysis, Middle Aged, medicine.disease, Stroke, Survival Rate, Treatment Outcome, Anesthesia, Tissue Plasminogen Activator, Ischemic stroke, Feasibility Studies, Surgery, Female, Neurology (clinical), business, Follow-Up Studies
Abstract

OBJECTIVE To assess the feasibility, safety and preliminary efficacy of intra-arterial thrombolysis (IAT) compared with standard intravenous thrombolysis (IVT) for acute ischemic stroke. METHODS Eligible patients with ischemic stroke, who were devoid of contraindications, started IVT within 3 h or IAT as soon as possible within 6 h. Patients were randomized within 3 h of onset to receive either intravenous alteplase, in accordance with the current European labeling, or up to 0.9 mg/kg intra-arterial alteplase (maximum 90 mg), over 60 min into the thrombus, if necessary with mechanical clot disruption and/or retrieval. The purpose of the study was to determine the proportion of favorable outcome at 90 days. Safety endpoints included symptomatic intracranial hemorrhage (SICH), death and other serious adverse events. RESULTS 54 patients (25 IAT) were enrolled. Median time from stroke onset to start to treatment was 3 h 15 min for IAT and 2 h 35 min for IVT (p

Published
2009

24. Genomic imbalances are confined to non-proliferating cells in paediatric patients with acute myeloid leukaemia and a normal or incomplete karyotype

Author

Ballabio, E, Regan, R, Garimberti, E, Harbott, J, Bradtke, J, Teigler Schlegel, A, Biondi, A, Cazzaniga, G, Giudici, G, Wainscoat, J, Boultwood, J, Bridger, J, Knight, S, Tosi, S, Wainscoat, JS, Bridger, JM, Knight, SJ, Tosi, S., BIONDI, ANDREA, Ballabio, E, Regan, R, Garimberti, E, Harbott, J, Bradtke, J, Teigler Schlegel, A, Biondi, A, Cazzaniga, G, Giudici, G, Wainscoat, J, Boultwood, J, Bridger, J, Knight, S, Tosi, S, Wainscoat, JS, Bridger, JM, Knight, SJ, Tosi, S., and BIONDI, ANDREA

Abstract

Leukaemia is often associated with genetic alterations such as translocations, amplifications and deletions, and recurrent chromosome abnormalities are used as markers of diagnostic and prognostic relevance. However, a proportion of acute myeloid leukaemia (AML) cases have an apparently normal karyotype despite comprehensive cytogenetic analysis. Based on conventional cytogenetic analysis of banded chromosomes, we selected a series of 23 paediatric patients with acute myeloid leukaemia and performed whole genome array comparative genome hybridization (aCGH) using DNA samples derived from the same patients. Imbalances involving large chromosomal regions or entire chromosomes were detected by aCGH in seven of the patients studied. Results were validated by fluorescence in situ hybridization (FISH) to both interphase nuclei and metaphase chromosomes using appropriate bacterial artificial chromosome (BAC) probes. The majority of these copy number alterations (CNAs) were confirmed by FISH and found to localize to the interphase rather than metaphase nuclei. Furthermore, the proliferative states of the cells analyzed by FISH were tested by immunofluorescence using an antibody against the proliferation marker pKi67. Interestingly, these experiments showed that, in the vast majority of cases, the changes appeared to be confined to interphase nuclei in a non-proliferative status. © 2011 Ballabio et al.

Published
2011

27. The Causative Classification of Stroke system

Author

Arsava, E.M., primary, Ballabio, E., additional, Benner, T., additional, Cole, J.W., additional, Delgado-Martinez, M.P., additional, Dichgans, M., additional, Fazekas, F., additional, Furie, K.L., additional, Illoh, K., additional, Jood, K., additional, Kittner, S., additional, Lindgren, A.G., additional, Majersik, J.J., additional, Macleod, M.J., additional, Meurer, W.J., additional, Montaner, J., additional, Olugbodi, A.A., additional, Pasdar, A., additional, Redfors, P., additional, Schmidt, R., additional, Sharma, P., additional, Singhal, A.B., additional, Sorensen, A.G., additional, Sudlow, C., additional, Thijs, V., additional, Worrall, B.B., additional, Rosand, J., additional, and Ay, H., additional

Published
2010
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28. The inducible T-cell co-stimulator molecule is expressed on subsets of T cells and is a new marker of lymphomas of T follicular helper cell-derivation

Author

Marafioti, T., primary, Paterson, J. C., additional, Ballabio, E., additional, Chott, A., additional, Natkunam, Y., additional, Rodriguez-Justo, M., additional, Plonquet, A., additional, Rodriguez-Pinilla, S. M., additional, Klapper, W., additional, Hansmann, M.-L., additional, Pileri, S. A., additional, Isaacson, P. G., additional, Stein, H., additional, Piris, M. A., additional, Mason, D. Y., additional, and Gaulard, P., additional

Published
2010
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29. Stem cell therapy in stroke

Author

Locatelli, F., primary, Bersano, A., additional, Ballabio, E., additional, Lanfranconi, S., additional, Papadimitriou, D., additional, Strazzer, S., additional, Bresolin, N., additional, Comi, G. P., additional, and Corti, S., additional

Published
2008
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30. Statins And Stroke

Author

Bersano, A., primary, Ballabio, E., additional, Lanfranconi, S., additional, Mazzucco, S., additional, Candelise, L., additional, and Monaco, S., additional

Published
2008
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35. RUNX1 Is a Key Target in t(4;11) Leukemias that Contributes to Gene Activation through an AF4-MLL Complex Interaction

Author

Wilkinson, AC, Ballabio, E, Geng, H, North, P, Tapia, M, Kerry, J, Biswas, D, Roeder, RG, Allis, CD, Melnick, A, de Bruijn, MFTR, and Milne, TA

Subjects
Transcriptional Activation, Chromatin Immunoprecipitation, Oncogene Proteins, Oncogene Proteins, Fusion, Molecular Sequence Data, Biology, Models, Biological, General Biochemistry, Genetics and Molecular Biology, Article, Translocation, Genetic, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, Cell Line, Tumor, Precursor B-Cell Lymphoblastic Leukemia-Lymphoma, hemic and lymphatic diseases, Humans, Epigenetics, Amino Acid Sequence, lcsh:QH301-705.5, Gene, neoplasms, 030304 developmental biology, Cell Proliferation, Genetics, Regulation of gene expression, 0303 health sciences, Leukemia, Gene Expression Regulation, Leukemic, Protein Stability, Chromosomes, Human, Pair 11, Prognosis, Fusion protein, Treatment Outcome, lcsh:Biology (General), RUNX1, chemistry, Genetic Loci, 030220 oncology & carcinogenesis, Core Binding Factor Alpha 2 Subunit, Myeloid-Lymphoid Leukemia Protein, Chromosomes, Human, Pair 4, Chromatin immunoprecipitation, Protein Binding
Abstract

Summary The Mixed Lineage Leukemia (MLL) protein is an important epigenetic regulator required for the maintenance of gene activation during development. MLL chromosomal translocations produce novel fusion proteins that cause aggressive leukemias in humans. Individual MLL fusion proteins have distinct leukemic phenotypes even when expressed in the same cell type, but how this distinction is delineated on a molecular level is poorly understood. Here, we highlight a unique molecular mechanism whereby the RUNX1 gene is directly activated by MLL-AF4 and the RUNX1 protein interacts with the product of the reciprocal AF4-MLL translocation. These results support a mechanism of transformation whereby two oncogenic fusion proteins cooperate by activating a target gene and then modulating the function of its downstream product., Graphical Abstract Highlights ► A common set of target genes directly regulated by MLL-AF4 is identified ► RUNX1 is a target gene that is specifically upregulated in t(4;11) patients ► MLL-AF4 controls RUNX1 gene expression by stabilizing ENL and AF9 binding ► RUNX1 cooperates with an AF4-MLL complex to activate gene targets, Children and adults with acute leukemias caused by the mixed lineage leukemia (MLL) gene have very poor survival rates, most likely due to the fact that MLL is a regulator of epigenetic information. Milne and colleagues now show that a protein named RUNX1 cooperates with two different MLL mutations to alter the epigenetic information content of the cell, directly contributing to the poor prognosis of MLL-associated leukemias.

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36. Can we prepare IVF culture media two days before ovum pick up without affecting embryological parameters? A retrospective case-matched study

Author

Paffoni A, Ballabio E, Cesana S, Stefania Ferrari, Wyssling H, and Mc, Bianchi

Subjects
Embryology, Embryo, IVF, Original Article, Culture medium
Abstract

Background: According to several laboratory protocols and specific conditions, in vitro fertilization (IVF) dishes with culture media can be prepared 24 hr in advance compared to routine protocols. However, it is not clear if this procedure can affect embryological outcomes. Methods: A nested case-control study was done in a cohort of couples undergoing IVF at the Infertility Unit of the ASST Lariana from August 2016 to July 2018. Cases were patients undergoing ovum pick up after a laboratory day off. Controls were patients undergoing ovum pick up after working days from Monday to Thursday. Culture media for oocyte culture and insemination were prepared about 42 and 18 hr before oocyte retrieval for cases and controls, respectively. Cases and controls were matched with a 1:2 ratio (for age, inseminated oocytes, length of stimulation). The “Good-Quality-Index” (GQI) was the main outcome to be compared between the two groups and was defined as good quality transferred or cryopreserved embryos on day 2 or 3+number of good quality blastocysts/inseminated oocytes. Results: A total of 76 cases and 152 matched controls were enrolled. The median GQI was equal to 33.0% (IQR: 20.0–50.0%) and 33.0% (IQR: 25.0–50.0%), in cases and controls, respectively (p=0.40). Study groups and GQI were not significantly correlated (correlation coefficient r=0.047, p=0.48). Main embryological parameters and cumulative pregnancy rates were similar between the two groups. Conclusion: Our data support the vision that culture media can be prepared 24 hr in advance compared to routine protocols without affecting embryological outcomes.

37. Considerations on a mutation in the NOTCH3 gene sparing a cysteine residue: a rare polymorphism rather than a CADASIL variant

Author

anna bersano, Ranieri M, Ciammola A, Cinnante C, Lanfranconi S, Mt, Dotti, Candelise L, Baschirotto C, Ghione I, Ballabio E, Bresolin N, and Mt, Bassi

Subjects
Receptors, Notch, white matter lesions, DNA Mutational Analysis, CADASIL, Exons, Articles, Middle Aged, Magnetic Resonance Imaging, cysteine residue, NOTCH3 mutations, Phenotype, Pons, Mutation, Animals, Humans, Female, Cysteine, Receptor, Notch3, Zebrafish
Abstract

Some missense mutations and small deletions in the NOTCH3 gene, not involving cysteine residues, have been described in patients considered to be affected by paucisymptomatic CADASIL. However, the significance of such molecular variants is still unclear. We describe a 49-year-old woman with a CADASIL-like phenotype, carrying a novel cysteine-sparing mutation in exon 29 of the NOTCH3 gene, and discuss the possible pathogenetic role of this molecular variant. Even though atypical clinical and MRI findings make a diagnosis of CADASIL unlikely in this patient, our report nevertheless underlines the intriguing genotype-phenotype relationship in NOTCH3 mutations and the importance of functional investigation to ascertain the role of new NOTCH3 mutations in CADASIL pathogenesis.

38. The role of clinical and neuroimaging features in the diagnosis of CADASIL

Author

Bersano, Anna, Bedini, Gloria, Markus, Hugh Stephen, Vitali, Paolo, Colli-Tibaldi, Enrico, Taroni, Franco, Gellera, Cinzia, Baratta, Silvia, Mosca, Lorena, Carrera, Paola, Ferrari, Maurizio, Cereda, Cristina, Grieco, Gaetano, Lanfranconi, Silvia, Mazucchelli, Franca, Zarcone, Davide, De Lodovici, Maria Luisa, Bono, Giorgio, Boncoraglio, Giorgio Battista, Parati, Eugenio Agostino, Calloni, Maria Vittoria, Perrone, Patrizia, Bordo, Bianca Maria, Motto, Cristina, Agostoni, Elio, Pezzini, Alessandro, Padovani, Alessandro, Micieli, Giuseppe, Cavallini, Anna, Molini, Graziella, Sasanelli, Francesco, Sessa, Maria, Comi, Giancarlo, Checcarelli, Nicoletta, Carmerlingo, Massimo, Corato, Manuel, Marcheselli, Simona, Fusi, Laura, Grampa, Giampiero, Uccellini, Davide, Beretta, Simone, Ferrarese, Carlo, Incorvaia, Barbara, Tadeo, Carlo Sebastiano, Adobbati, Laura, Silani, Vincenzo, Faragò, Giuseppe, Trobia, Nadia, Grond-Ginsbach, Caspar, Candelise, Livia, Mazzucchelli, Franca, Guidotti, Mario, Riva, Maurizio, Iurlaro, Simona, Maria, Bianca Bordo, Braga, Massimiliano, Meola, Giovanni, Carpo, Marinella, Camerlingo, Massimo, Borutti, Giuseppina, Delodovici, Marialuisa, Verrengia, Elena Pinuccia, Tancredi, Lucia, Terruzzi, Alessandro, Magoni, Mauro, Del Zotto, Elisabetta, Bassi, Pietro, Lattuada, Patrizia, Ballabio, Elena, Gambaro, Paola, Lanfranconi, Sivia, Corrà, Barbara, Canavero, Isabella, Arbustini, Eloisa, Grasso, Maurizia, Comi, Giacomo Pietro, Corti, Stefania, Ronchi, Dario, Merlini, Giampaolo, Obici, Laura, Bassi, Maria Teresa, Tagliavini, Fabrizio, Ginsbach, Caspar Grond, Bersano, Anna, Bedini, Gloria, Markus, Hugh Stephen, Vitali, Paolo, Colli-Tibaldi, Enrico, Taroni, Franco, Gellera, Cinzia, Baratta, Silvia, Mosca, Lorena, Carrera, Paola, Ferrari, Maurizio, Cereda, Cristina, Grieco, Gaetano, Lanfranconi, Silvia, Mazucchelli, Franca, Zarcone, Davide, De Lodovici, Maria Luisa, Bono, Giorgio, Boncoraglio, Giorgio Battista, Parati, Eugenio Agostino, Calloni, Maria Vittoria, Perrone, Patrizia, Bordo, Bianca Maria, Motto, Cristina, Agostoni, Elio, Pezzini, Alessandro, Padovani, Alessandro, Micieli, Giuseppe, Cavallini, Anna, Molini, Graziella, Sasanelli, Francesco, Sessa, Maria, Comi, Giancarlo, Checcarelli, Nicoletta, Carmerlingo, Massimo, Corato, Manuel, Marcheselli, Simona, Fusi, Laura, Grampa, Giampiero, Uccellini, Davide, Beretta, Simone, Ferrarese, Carlo, Incorvaia, Barbara, Tadeo, Carlo Sebastiano, Adobbati, Laura, Silani, Vincenzo, Faragò, Giuseppe, Trobia, Nadia, Grond-Ginsbach, Caspar, Candelise, Livia, Mazzucchelli, Franca, Guidotti, Mario, Riva, Maurizio, Iurlaro, Simona, Maria, Bianca Bordo, Braga, Massimiliano, Meola, Giovanni, Carpo, Marinella, Camerlingo, Massimo, Borutti, Giuseppina, Delodovici, Marialuisa, Verrengia, Elena Pinuccia, Tancredi, Lucia, Terruzzi, Alessandro, Magoni, Mauro, Del Zotto, Elisabetta, Bassi, Pietro, Lattuada, Patrizia, Ballabio, Elena, Gambaro, Paola, Lanfranconi, Sivia, Corrà, Barbara, Canavero, Isabella, Arbustini, Eloisa, Grasso, Maurizia, Comi, Giacomo Pietro, Corti, Stefania, Ronchi, Dario, Merlini, Giampaolo, Obici, Laura, Bassi, Maria Teresa, Tagliavini, Fabrizio, Ginsbach, Caspar Grond, Bersano, A, Bedini, G, Markus, H, Vitali, P, Colli-Tibaldi, E, Taroni, F, Gellera, C, Baratta, S, Mosca, L, Carrera, P, Ferrari, M, Cereda, C, Grieco, G, Lanfranconi, S, Mazucchelli, F, Zarcone, D, De Lodovici, M, Bono, G, Boncoraglio, G, Parati, E, Calloni, M, Perrone, P, Bordo, B, Motto, C, Agostoni, E, Pezzini, A, Padovani, A, Micieli, G, Cavallini, A, Molini, G, Sasanelli, F, Sessa, M, Comi, G, Checcarelli, N, Carmerlingo, M, Corato, M, Marcheselli, S, Fusi, L, Grampa, G, Uccellini, D, Beretta, S, Ferrarese, C, Incorvaia, B, Tadeo, C, Adobbati, L, Silani, V, Faragò, G, Trobia, N, Grond-Ginsbach, C, Candelise, L, Mazzucchelli, F, Guidotti, M, Riva, M, Iurlaro, S, Maria, B, Braga, M, Meola, G, Carpo, M, Camerlingo, M, Borutti, G, Delodovici, M, Verrengia, E, Tancredi, L, Terruzzi, A, Magoni, M, Del Zotto, E, Bassi, P, Lattuada, P, Ballabio, E, Gambaro, P, Corrà, B, Canavero, I, Arbustini, E, Grasso, M, Corti, S, Ronchi, D, Merlini, G, Obici, L, Bassi, M, Tagliavini, F, Ginsbach, C, Markus, Hugh [0000-0002-9794-5996], and Apollo - University of Cambridge Repository

Subjects
Adult, Male, Brain hemorrhage, medicine.medical_specialty, Neurology, White matter lesion, Monogenic disorder, CADASIL, Neuroimaging, Gene mutation, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Diagnosis, Medicine, Dementia, Humans, cardiovascular diseases, Prospective Studies, Receptor, Notch3, Neuroradiology, Aged, Cerebral Hemorrhage, Stroke genetics, Monogenic disorders, business.industry, Brain, Middle Aged, medicine.disease, Magnetic Resonance Imaging, White Matter, Prospective Studie, Ischemic Attack, Transient, Stroke genetic, Stroke, Lacunar, Female, Neurology (clinical), Atrophy, business, Neuroscience, NOTCH3 gene, 030217 neurology & neurosurgery, Diagnosi, Human
Abstract

BACKGROUND: Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is the most common familial cerebral small vessel disease, caused by NOTCH3 gene mutations. The aim of our study was to identify clinical and neuroradiological features which would be useful in identifying which patients presenting with lacunar stroke and TIA are likely to have CADASIL. METHODS: Patients with lacunar stroke or TIA were included in the present study. For each patient, demographic and clinical data were collected. MRI images were centrally analysed for the presence of lacunar infarcts, microbleeds, temporal lobe involvement, global atrophy and white matter hyperintensities. RESULTS: 128 patients (mean age 56.3 ± 12.4 years) were included. A NOTCH3 mutation was found in 12.5% of them. A family history of stroke, the presence of dementia and external capsule lesions on MRI were the only features significantly associated with the diagnosis of CADASIL. Although thalamic, temporal pole gliosis and severe white matter hyperintensities were less specific for CADASIL diagnosis, the combination of a number of these factors together with familial history for stroke result in a higher positive predictive value and specificity. CONCLUSIONS: A careful familial history collection and neuroradiological assessment can identify patients in whom NOTCH3 genetic testing has a higher yield., The Lombardia GENS project has received funding from the Regione Lombardia Government as a Research Independent Project (DGR n°VIII/006128-12/12/2007). Lombardia GENS is an investigator-driven, academic, non-profit consortium and is publicly funded. Hugh Markus is supported by an NIHR Senior Investigator award and his work is supported by the Cambridge University Hospitals NIHR Biomedical Research Centre

Published
2018

39. Genomic imbalances are confined to non-proliferating cells in paediatric patients with acute myeloid leukaemia and a normal or incomplete karyotype

Author

Erica Ballabio, Jochen Harbott, Joanna M. Bridger, Jacqueline Boultwood, Giovanni Giudici, Giovanni Cazzaniga, Jutta Bradtke, Samantha J. L. Knight, Regina Regan, James S. Wainscoat, Andrea Teigler-Schlegel, Andrea Biondi, Elisa Garimberti, Silvano Tosi, Ballabio, E, Regan, R, Garimberti, E, Harbott, J, Bradtke, J, Teigler Schlegel, A, Biondi, A, Cazzaniga, G, Giudici, G, Wainscoat, J, Boultwood, J, Bridger, J, Knight, S, and Tosi, S

Subjects
Male, lcsh:Medicine, Fluorescent Antibody Technique, Chromosomal translocation, Hematologic Cancers and Related Disorders, Molecular Cell Biology, lcsh:Science, Child, In Situ Hybridization, Fluorescence, Comparative Genomic Hybridization, Multidisciplinary, medicine.diagnostic_test, Chromosome Biology, Karyotype, Hematology, Leukemia, Myeloid, Acute, Cytogenetic Analysis, Medicine, Female, Paediatric, acute myeloid leukaemia, karyotype, non-proliferating cells, Research Article, Adult, Acute Myeloid Leukemia, Chromosome Structure and Function, medicine.medical_specialty, DNA Copy Number Variations, Biology, Cytogenetics, Leukemias, Genetics, Cancer Genetics, medicine, Humans, Pediatric Hematology, Metaphase, Cell Proliferation, Cell Nucleus, Chromosome Aberrations, Genome, Human, lcsh:R, Infant, Reproducibility of Results, Chromosome, Molecular biology, Karyotyping, lcsh:Q, Human genome, Cytogenetic Techniques, Fluorescence in situ hybridization, Comparative genomic hybridization
Abstract

Leukaemia is often associated with genetic alterations such as translocations, amplifications and deletions, and recurrent chromosome abnormalities are used as markers of diagnostic and prognostic relevance. However, a proportion of acute myeloid leukaemia (AML) cases have an apparently normal karyotype despite comprehensive cytogenetic analysis. Based on conventional cytogenetic analysis of banded chromosomes, we selected a series of 23 paediatric patients with acute myeloid leukaemia and performed whole genome array comparative genome hybridization (aCGH) using DNA samples derived from the same patients. Imbalances involving large chromosomal regions or entire chromosomes were detected by aCGH in seven of the patients studied. Results were validated by fluorescence in situ hybridization (FISH) to both interphase nuclei and metaphase chromosomes using appropriate bacterial artificial chromosome (BAC) probes. The majority of these copy number alterations (CNAs) were confirmed by FISH and found to localize to the interphase rather than metaphase nuclei. Furthermore, the proliferative states of the cells analyzed by FISH were tested by immunofluorescence using an antibody against the proliferation marker pKi67. Interestingly, these experiments showed that, in the vast majority of cases, the changes appeared to be confined to interphase nuclei in a non-proliferative status. © 2011 Ballabio et al.

Published
2011

40. Novel markers of normal and neoplastic human plasmacytoid dendritic cells

Author

Andrey S. Shaw, Martin J. S. Dyer, Tony Petrella, Michael Dictor, Silvano Sozzani, Jennifer C. Paterson, David Y. Mason, Kevin Hollowood, Teresa Marafioti, Erica Ballabio, Kaaren K. Reichard, Ivan Dikic, Peter G. Isaacson, Harald Stein, Sara Tedoldi, Stefano Pileri, Fabio Facchetti, Martin-Leo Hansmann, Marafioti T, Paterson JC, Ballabio E, Reichard KK, Tedoldi S, Hollowood K, Dictor M, Hansmann ML, Pileri SA, Dyer MJ, Sozzani S, Dikic I, Shaw AS, Petrella T, Stein H, Isaacson PG, Facchetti F, and Mason DY.

Subjects
Adult, Male, Myeloid, Skin Neoplasms, Biopsy, Immunology, Plasma Cells, Plasmacytoid dendritic cell, Biology, Biochemistry, Diagnosis, Differential, Proto-Oncogene Proteins, medicine, Biomarkers, Tumor, Humans, INTERFERON-PRODUCING CELLS, INTRACELLULAR SIGNALING MOLECULES, LINEAGE-NEGATIVE MALIGNANCIES, GTPASE-ACTIVATING PROTEIN, TOLL-LIKE RECEPTORS, INDUCED IFN-ALPHA, T-CELLS, MYELOMONOCYTIC LEUKEMIA, TRANSCRIPTION FACTOR, CUTTING EDGE, Antigen-presenting cell, Neoplasms, Plasma Cell, Adaptor Proteins, Signal Transducing, Aged, Aged, 80 and over, Toll-like receptor, Myeloid leukemia, TLR9, Nuclear Proteins, hemic and immune systems, Cell Biology, Hematology, Dendritic cell, Dendritic Cells, Middle Aged, medicine.disease, Repressor Proteins, Leukemia, Cytoskeletal Proteins, Leukemia, Myeloid, Acute, medicine.anatomical_structure, Toll-Like Receptor 7, Hematologic Neoplasms, Toll-Like Receptor 9, Interferon Regulatory Factors, Cancer research, Trans-Activators, Female, Carrier Proteins
Abstract

Plasmacytoid dendritic cells (pDCs) are involved in innate immunity (eg, by secreting interferons) and also give rise to CD4+CD56+ hematodermic neoplasms. We report extensive characterization of human pDCs in routine tissue samples, documenting the expression of 19 immunohistologic markers, including signaling molecules (eg, BLNK), transcription factors (eg, ICSBP/IRF8 and PU.1), and Toll-like receptors (TLR7, TLR9). Many of these molecules are expressed in other cell types (principally B cells), but the adaptor protein CD2AP was essentially restricted to pDCs, and is therefore a novel immunohistologic marker for use in tissue biopsies. We found little evidence for activation-associated morphologic or phenotypic changes in conditions where pDCs are greatly increased (eg, Kikuchi disease). Most of the molecules were retained in the majority of pDC neoplasms, and 3 (BCL11A, CD2AP, and ICSBP/IRF8) were also commonly negative in leukemia cutis (acute myeloid leukemia in the skin), a tumor that may mimic pDC neoplasia. In summary, we have documented a range of molecules (notably those associated with B cells) expressed by pDCs in tissues and peripheral blood (where pDCs were detectable in cytospins at a frequency of < 1% of mononuclear cells) and also defined potential new markers (in particular CD2AP) for the diagnosis of pDC tumors.

Published
2008

41. Expression of two markers of germinal center T cells (SAP and PD-1) in angioimmunoblastic T-cell lymphoma

Author

David Y. Mason, Miguel A. Piris, Sara Tedoldi, Stefano Pileri, Giovanna Roncador, Lorena Maestre, Martin-Leo Hansmann, Teresa Marafioti, Jennifer C. Paterson, José Francisco García Verdes-Montenegro, Wolfram Klapper, Erica Ballabio, Roncador G, García Verdes-Montenegro JF, Tedoldi S, Paterson JC, Klapper W, Ballabio E, Maestre L, Pileri S, Hansmann ML, Piris MA, Mason DY, and Marafioti T.

Subjects
Antigens, Differentiation, T-Lymphocyte, Angioimmunoblastic T-cell lymphoma, Pathology, medicine.medical_specialty, Lymphoma, B-Cell, T-Lymphocytes, Palatine Tonsil, Programmed Cell Death 1 Receptor, Thymus Gland, Lymphoma, T-Cell, Lymphocytes, Tumor-Infiltrating, Antigen, Antigens, CD, medicine, Humans, Signaling Lymphocytic Activation Molecule Associated Protein, Adaptor Proteins, Signal Transducing, biology, Intracellular Signaling Peptides and Proteins, Germinal center, Hematology, T lymphocyte, medicine.disease, Germinal Center, Hodgkin Disease, Lymphoma, Neoplasm Proteins, Lymphatic system, Immunoblastic Lymphadenopathy, biology.protein, Antibody, Apoptosis Regulatory Proteins, Immunostaining, Spleen
Abstract

Background and Objectives In the present paper we report that SAP, an intracytoplasmic molecule that is involved in cell signaling, is an immunohistologic marker for germinal center T cells in paraffin-embedded tissue. We document its expression, and also that of PD-1 (another recently described marker of germinal center T cells to which a new antibody has been raised), in normal and neoplastic lymphoid tissue to evaluate the suggestion that helper T cells within the germinal centers of human lymphoid tissue are the cell of origin of angioimmunoblastic T-cell lymphoma (AITL), and to assess the diagnostic value of these two markers.Design and Methods Expression of SAP and PD-1 was investigated by immunohistochemistry in paraffin-embedded tissue sections and in cell lines. Western blotting was performed on cell lines, and antibody specificity was confirmed by immunostaining of transfected cells.Results Screening on more than 500 lymphoma biopsies showed that 95% (40/42) of cases of AITL expressed at least one of these markers. SAP was also expressed on many cases (15/21) of acute T lymphoblastic leukemia, in keeping with its presence in cortical thymocytes. However, PD-1 and SAP were also found in a minority of cases of peripheral T-cell lymphoma other than AITL, in contrast to a report that the former marker is specific for AITL. This observation raises the possibility that such non-angioimmunoblastic cases may be related to germinal center helper T cells.Interpretation and Conclusions These two markers provide additional evidence that AITL arises from germinal center T cells. They may also prove of value in the diagnosis of this disease since a negative reaction was rarely observed in this disorder.

Published
2006

42. The design and evaluation of rehabilitative computer technology for blind computer users: the need for a multidisciplinary approach

Author

Petrie, H., Deconinck, Frank, Strothotte, Th., Weber, G., Ballabio, E., Placencia-porrero, I., Bellacasa, R. Puig De La, and Medical Imaging and Physical Sciences

Subjects
Hardware_GENERAL, ComputingMilieux_COMPUTERSANDSOCIETY, InformationSystems_MISCELLANEOUS, design - computertechnology-blind
Abstract

The design and evaluation of rehabilitative computer technology for blind computer users: the need for a multidisciplinary approach.

Published
1993

44. Idiopathic intracranial hypertension secondary to Superior Sagittal Sinus Stenosis: a case report.

Author

Ballabio E, Valvassori L, De Simone R, Bianchi Marzoli S, and Frediani F

Subjects
Humans, Male, Adult, Constriction, Pathologic complications, Intracranial Hypertension etiology, Intracranial Hypertension diagnosis, Intracranial Hypertension complications, Pseudotumor Cerebri complications, Superior Sagittal Sinus
Abstract

Introduction: Idiopathic intracranial hypertension (IIH) is a disease characterized by elevated intracranial pressure (ICP) without established etiology. Venous sinus stenosis contributes to IIH; however, it is still uncertain whether the stenosis is a primary cause of IIH or a secondary result in response to elevated ICP. Transverse sinus stenosis is frequently identified in patients with IIH and it is suggestive of raised ICP. Here, we report a case of IIH caused by intrinsic superior sagittal sinus stenosis (SSS)., Case Presentation: A 43-year-old man suffered from IIH with headache, papilledema, and visual impairment. Angiography demonstrated isolated SSS stenosis with a pressure gradient of 30 mmHg. SSS stenosis was resistant to revascularization by stenting alone and intrastent balloon angioplasty was then performed to overcome such resistance. The rigidity of the vein wall suggests that the vein is not collapsed and the stenosis is intrinsic, secondary to idiopathic anatomical local changes. Post-procedure headache disappeared and visual acuity improved., Conclusion: An isolated SSS stenosis could lead to intracranial hypertension and this condition should be taken into account in the diagnostic workup of IIH. By now, SSS stenosis is not mentioned in any current consensus guidelines or paper on the diagnostic workflow of intracranial hypertension., (© 2024. Fondazione Società Italiana di Neurologia.)

Published
2024
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45. Pregnancy rate in IVF patients with unexpected poor response to ovarian stimulation.

Author

Paffoni A, Cesana S, Corti L, Ballabio E, Salemi C, Kunderfranco A, and Bianchi MC

Subjects
Birth Rate, Case-Control Studies, Female, Humans, Oocyte Retrieval, Ovulation Induction, Pregnancy, Pregnancy Rate, Retrospective Studies, Fertilization in Vitro, Ovarian Reserve
Abstract

Objective: To evaluate whether an unexpected poor response (cases with ≤3 oocytes) leads to a reduction in the pregnancy rate in IVF cycles compared to a suboptimal response (controls with 4-9 oocytes) in women with adequate ovarian reserve., Methods: A nested case-control study performed in a retrospective cohort of couples undergoing IVF at the Infertility Unit of the ASST Lariana. Cases and controls had adequate ovarian reserve and were matched 1:1 for female age and number of previous cycles. Cumulative clinical pregnancy rate per oocyte retrieval was the main outcome., Results: Overall, 113 cases and 113 matched controls were included; the median number of available oocytes was 2 and 6, respectively. The cumulative pregnancy rate per cycle was significantly reduced in cases compared to controls with a crude odds ratio = 0.45 [95% Confidence Interval: 0.28-0.82]. A binomial logistic model indicated that an increase in one oocyte increases the odds for cumulative pregnancy rate per cycle by 1.27 in women with 9 oocytes or less. The cumulative pregnancy rates per cycle in cases and controls, according to female age were respectively: 29% versus 54% in patients aged <35 years ( p  = 0.036); 22% versus 43% in patients aged 36-39 years ( p  = 0.048) and 11% versus 13% in patients 40-45 years old ( p  = 0.72). Patients belonging to older age groups showed decreasing probability of cumulative clinical pregnancy rates both among cases and controls group ( p  < 0.05)., Conclusions: The number of available oocytes significantly affects the probability of success in IVF cycles with unexpected impaired ovarian response.

Published
2022
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46. Chromatin accessibility governs the differential response of cancer and T cells to arginine starvation.

Author

Crump NT, Hadjinicolaou AV, Xia M, Walsby-Tickle J, Gileadi U, Chen JL, Setshedi M, Olsen LR, Lau IJ, Godfrey L, Quek L, Yu Z, Ballabio E, Barnkob MB, Napolitani G, Salio M, Koohy H, Kessler BM, Taylor S, Vyas P, McCullagh JSO, Milne TA, and Cerundolo V

Subjects
Animals, Humans, Arginine metabolism, Chromatin metabolism, Immune Evasion genetics, Neoplasms genetics, T-Lymphocytes metabolism
Abstract

Depleting the microenvironment of important nutrients such as arginine is a key strategy for immune evasion by cancer cells. Many tumors overexpress arginase, but it is unclear how these cancers, but not T cells, tolerate arginine depletion. In this study, we show that tumor cells synthesize arginine from citrulline by upregulating argininosuccinate synthetase 1 (ASS1). Under arginine starvation, ASS1 transcription is induced by ATF4 and CEBPβ binding to an enhancer within ASS1. T cells cannot induce ASS1, despite the presence of active ATF4 and CEBPβ, as the gene is repressed. Arginine starvation drives global chromatin compaction and repressive histone methylation, which disrupts ATF4/CEBPβ binding and target gene transcription. We find that T cell activation is impaired in arginine-depleted conditions, with significant metabolic perturbation linked to incomplete chromatin remodeling and misregulation of key genes. Our results highlight a T cell behavior mediated by nutritional stress, exploited by cancer cells to enable pathological immune evasion., Competing Interests: Declaration of interests T.A.M. and P.V. are founder shareholders of OxStem Oncology (OSO), a subsidiary company of OxStem Ltd. M. Salio consults for Nucleome Therapeutics Ltd. The remaining authors declare no competing interests., (Copyright © 2021 The Author(s). Published by Elsevier Inc. All rights reserved.)

Published
2021
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47. BET inhibition disrupts transcription but retains enhancer-promoter contact.

Author

Crump NT, Ballabio E, Godfrey L, Thorne R, Repapi E, Kerry J, Tapia M, Hua P, Lagerholm C, Filippakopoulos P, Davies JOJ, and Milne TA

Subjects
CCCTC-Binding Factor metabolism, Carcinogenesis drug effects, Carcinogenesis genetics, Cell Cycle Proteins metabolism, Cell Line, Tumor, Chromatin metabolism, Chromosomal Proteins, Non-Histone metabolism, DNA-Binding Proteins metabolism, Glycols pharmacology, Histones metabolism, Humans, Leukemia genetics, Leukemia pathology, Models, Genetic, Protein Binding drug effects, Proto-Oncogene Proteins c-myc genetics, Cohesins, Enhancer Elements, Genetic, Promoter Regions, Genetic, Transcription, Genetic drug effects
Abstract

Enhancers are DNA sequences that enable complex temporal and tissue-specific regulation of genes in higher eukaryotes. Although it is not entirely clear how enhancer-promoter interactions can increase gene expression, this proximity has been observed in multiple systems at multiple loci and is thought to be essential for the maintenance of gene expression. Bromodomain and Extra-Terminal domain (BET) and Mediator proteins have been shown capable of forming phase condensates and are thought to be essential for super-enhancer function. Here, we show that targeting of cells with inhibitors of BET proteins or pharmacological degradation of BET protein Bromodomain-containing protein 4 (BRD4) has a strong impact on transcription but very little impact on enhancer-promoter interactions. Dissolving phase condensates reduces BRD4 and Mediator binding at enhancers and can also strongly affect gene transcription, without disrupting enhancer-promoter interactions. These results suggest that activation of transcription and maintenance of enhancer-promoter interactions are separable events. Our findings further indicate that enhancer-promoter interactions are not dependent on high levels of BRD4 and Mediator, and are likely maintained by a complex set of factors including additional activator complexes and, at some sites, CTCF and cohesin.

Published
2021
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48. Can We Prepare IVF Culture Media Two Days Before Ovum Pick up Without Affecting Embryological Parameters? A Retrospective Case-Matched Study.

Author

Paffoni A, Ballabio E, Cesana S, Ferrari S, Wyssling H, and Bianchi MC

Abstract

Background: According to several laboratory protocols and specific conditions, in vitro fertilization (IVF) dishes with culture media can be prepared 24 hr in advance compared to routine protocols. However, it is not clear if this procedure can affect embryological outcomes., Methods: A nested case-control study was done in a cohort of couples undergoing IVF at the Infertility Unit of the ASST Lariana from August 2016 to July 2018. Cases were patients undergoing ovum pick up after a laboratory day off. Controls were patients undergoing ovum pick up after working days from Monday to Thursday. Culture media for oocyte culture and insemination were prepared about 42 and 18 hr before oocyte retrieval for cases and controls, respectively. Cases and controls were matched with a 1:2 ratio (for age, inseminated oocytes, length of stimulation). The "Good-Quality-Index" (GQI) was the main outcome to be compared between the two groups and was defined as good quality transferred or cryopreserved embryos on day 2 or 3+number of good quality blastocysts/inseminated oocytes., Results: A total of 76 cases and 152 matched controls were enrolled. The median GQI was equal to 33.0% (IQR: 20.0-50.0%) and 33.0% (IQR: 25.0-50.0%), in cases and controls, respectively (p=0.40). Study groups and GQI were not significantly correlated (correlation coefficient r=0.047, p=0.48). Main embryological parameters and cumulative pregnancy rates were similar between the two groups., Conclusion: Our data support the vision that culture media can be prepared 24 hr in advance compared to routine protocols without affecting embryological outcomes., Competing Interests: Conflict of Interest A.P. reports travel expenses for scientific meetings paid by Merck-Serono Theramex and Ferring. All the other authors declare no conflict of interest., (Copyright© 2019, Avicenna Research Institute.)

Published
2019

49. Rationale for targeting BCL6 in MLL -rearranged acute lymphoblastic leukemia.

Author

Hurtz C, Chan LN, Geng H, Ballabio E, Xiao G, Deb G, Khoury H, Chen CW, Armstrong SA, Chen J, Ernst P, Melnick A, Milne T, and Müschen M

Subjects
Animals, Biomarkers, Tumor genetics, Cell Survival genetics, Cells, Cultured, Gene Deletion, Gene Targeting, Humans, Mice, Oncogene Proteins, Fusion genetics, Oncogene Proteins, Fusion metabolism, Prognosis, Promoter Regions, Genetic genetics, Gene Expression Regulation, Leukemic, Myeloid-Lymphoid Leukemia Protein genetics, Precursor Cell Lymphoblastic Leukemia-Lymphoma physiopathology, Proto-Oncogene Proteins c-bcl-6 genetics, Proto-Oncogene Proteins c-bcl-6 metabolism
Abstract

Chromosomal rearrangements of the mixed lineage leukemia ( MLL ) gene occur in ∼10% of B-cell acute lymphoblastic leukemia (B-ALL) and define a group of patients with dismal outcomes. Immunohistochemical staining of bone marrow biopsies from most of these patients revealed aberrant expression of BCL6, a transcription factor that promotes oncogenic B-cell transformation and drug resistance in B-ALL. Our genetic and ChIP-seq (chromatin immunoprecipitation [ChIP] combined with high-throughput sequencing) analyses showed that MLL-AF4 and MLL-ENL fusions directly bound to the BCL6 promoter and up-regulated BCL6 expression. While oncogenic MLL fusions strongly induced aberrant BCL6 expression in B-ALL cells, germline MLL was required to up-regulate Bcl6 in response to physiological stimuli during normal B-cell development. Inducible expression of Bcl6 increased MLL mRNA levels, which was reversed by genetic deletion and pharmacological inhibition of Bcl6, suggesting a positive feedback loop between MLL and BCL6. Highlighting the central role of BCL6 in MLL- rearranged B-ALL, conditional deletion and pharmacological inhibition of BCL6 compromised leukemogenesis in transplant recipient mice and restored sensitivity to vincristine chemotherapy in MLL- rearranged B-ALL patient samples. Oncogenic MLL fusions strongly induced transcriptional activation of the proapoptotic BH3-only molecule BIM, while BCL6 was required to curb MLL-induced expression of BIM. Notably, peptide (RI-BPI) and small molecule (FX1) BCL6 inhibitors derepressed BIM and synergized with the BH3-mimetic ABT-199 in eradicating MLL- rearranged B-ALL cells. These findings uncover MLL-dependent transcriptional activation of BCL6 as a previously unrecognized requirement of malignant transformation by oncogenic MLL fusions and identified BCL6 as a novel target for the treatment of MLL-rearranged B-ALL., (© 2019 Hurtz et al.; Published by Cold Spring Harbor Laboratory Press.)

Published
2019
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50. The basic helix-loop-helix transcription factor SHARP1 is an oncogenic driver in MLL-AF6 acute myelogenous leukemia.

Author

Numata A, Kwok HS, Kawasaki A, Li J, Zhou QL, Kerry J, Benoukraf T, Bararia D, Li F, Ballabio E, Tapia M, Deshpande AJ, Welner RS, Delwel R, Yang H, Milne TA, Taneja R, and Tenen DG

Subjects
Animals, Basic Helix-Loop-Helix Transcription Factors genetics, Carcinogenesis, Cell Transformation, Neoplastic, Female, Humans, Leukemia, Myeloid, Acute genetics, Leukemia, Myeloid, Acute pathology, Male, Mice, Mice, Knockout, Myeloid-Lymphoid Leukemia Protein genetics, Myeloid-Lymphoid Leukemia Protein metabolism, Oncogene Proteins, Fusion genetics, Oncogene Proteins, Fusion metabolism, Transcription Factors genetics, Basic Helix-Loop-Helix Transcription Factors metabolism, Leukemia, Myeloid, Acute metabolism, Transcription Factors metabolism
Abstract

Acute Myeloid Leukemia (AML) with MLL gene rearrangements demonstrate unique gene expression profiles driven by MLL-fusion proteins. Here, we identify the circadian clock transcription factor SHARP1 as a novel oncogenic target in MLL-AF6 AML, which has the worst prognosis among all subtypes of MLL-rearranged AMLs. SHARP1 is expressed solely in MLL-AF6 AML, and its expression is regulated directly by MLL-AF6/DOT1L. Suppression of SHARP1 induces robust apoptosis of human MLL-AF6 AML cells. Genetic deletion in mice delays the development of leukemia and attenuated leukemia-initiating potential, while sparing normal hematopoiesis. Mechanistically, SHARP1 binds to transcriptionally active chromatin across the genome and activates genes critical for cell survival as well as key oncogenic targets of MLL-AF6. Our findings demonstrate the unique oncogenic role for SHARP1 in MLL-AF6 AML.

Published
2018
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