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1. Functional and clinical studies reveal pathophysiological complexity of CLCN4-related neurodevelopmental condition

Author

Palmer, EE ; https://orcid.org/0000-0003-1844-215X, Pusch, M, Picollo, A, Forwood, C, Nguyen, MH ; https://orcid.org/0000-0002-2529-5330, Suckow, V, Gibbons, J, Hoff, A, Sigfrid, L, Megarbane, A, Nizon, M, Cogné, B, Beneteau, C, Alkuraya, FS, Chedrawi, A, Hashem, MO, Stamberger, H, Weckhuysen, S, Vanlander, A, Ceulemans, B, Rajagopalan, S, Nunn, K, Arpin, S, Raynaud, M, Motter, CS, Ward-Melver, C, Janssens, K, Meuwissen, M, Beysen, D, Dikow, N, Grimmel, M, Haack, TB, Clement, E, McTague, A, Hunt, D, Townshend, S, Ward, M, Richards, LJ, Simons, C, Costain, G, Dupuis, L, Mendoza-Londono, R, Dudding-Byth, T, Boyle, J, Saunders, C, Fleming, E, El Chehadeh, S, Spitz, MA, Piton, A, Gerard, B, Abi Warde, MT, Rea, G, McKenna, C, Douzgou, S, Banka, S, Akman, C, Bain, JM, Sands, TT, Wilson, GN, Silvertooth, EJ, Miller, L, Lederer, D, Sachdev, R, Macintosh, R ; https://orcid.org/0000-0001-5036-0264, Monestier, O, Karadurmus, D, Collins, F, Carter, M, Rohena, L, Willemsen, MH, Ockeloen, CW, Pfundt, R, Kroft, SD, Field, M, Laranjeira, FER, Fortuna, AM, Soares, AR, Michaud, V, Naudion, S, Golla, S, Weaver, DD, Bird, LM, Friedman, J, Clowes, V, Joss, S, Pölsler, L, Campeau, PM, Blazo, M, Bijlsma, EK, Rosenfeld, JA, Beetz, C, Powis, Z, McWalter, K, Brandt, T, Torti, E, Mathot, M, Mohammad, SS, Armstrong, R, Kalscheuer, VM, Palmer, EE ; https://orcid.org/0000-0003-1844-215X, Pusch, M, Picollo, A, Forwood, C, Nguyen, MH ; https://orcid.org/0000-0002-2529-5330, Suckow, V, Gibbons, J, Hoff, A, Sigfrid, L, Megarbane, A, Nizon, M, Cogné, B, Beneteau, C, Alkuraya, FS, Chedrawi, A, Hashem, MO, Stamberger, H, Weckhuysen, S, Vanlander, A, Ceulemans, B, Rajagopalan, S, Nunn, K, Arpin, S, Raynaud, M, Motter, CS, Ward-Melver, C, Janssens, K, Meuwissen, M, Beysen, D, Dikow, N, Grimmel, M, Haack, TB, Clement, E, McTague, A, Hunt, D, Townshend, S, Ward, M, Richards, LJ, Simons, C, Costain, G, Dupuis, L, Mendoza-Londono, R, Dudding-Byth, T, Boyle, J, Saunders, C, Fleming, E, El Chehadeh, S, Spitz, MA, Piton, A, Gerard, B, Abi Warde, MT, Rea, G, McKenna, C, Douzgou, S, Banka, S, Akman, C, Bain, JM, Sands, TT, Wilson, GN, Silvertooth, EJ, Miller, L, Lederer, D, Sachdev, R, Macintosh, R ; https://orcid.org/0000-0001-5036-0264, Monestier, O, Karadurmus, D, Collins, F, Carter, M, Rohena, L, Willemsen, MH, Ockeloen, CW, Pfundt, R, Kroft, SD, Field, M, Laranjeira, FER, Fortuna, AM, Soares, AR, Michaud, V, Naudion, S, Golla, S, Weaver, DD, Bird, LM, Friedman, J, Clowes, V, Joss, S, Pölsler, L, Campeau, PM, Blazo, M, Bijlsma, EK, Rosenfeld, JA, Beetz, C, Powis, Z, McWalter, K, Brandt, T, Torti, E, Mathot, M, Mohammad, SS, Armstrong, R, and Kalscheuer, VM

Abstract

Missense and truncating variants in the X-chromosome-linked CLCN4 gene, resulting in reduced or complete loss-of-function (LOF) of the encoded chloride/proton exchanger ClC-4, were recently demonstrated to cause a neurocognitive phenotype in both males and females. Through international clinical matchmaking and interrogation of public variant databases we assembled a database of 90 rare CLCN4 missense variants in 90 families: 41 unique and 18 recurrent variants in 49 families. For 43 families, including 22 males and 33 females, we collated detailed clinical and segregation data. To confirm causality of variants and to obtain insight into disease mechanisms, we investigated the effect on electrophysiological properties of 59 of the variants in Xenopus oocytes using extended voltage and pH ranges. Detailed analyses revealed new pathophysiological mechanisms: 25% (15/59) of variants demonstrated LOF, characterized by a “shift” of the voltage-dependent activation to more positive voltages, and nine variants resulted in a toxic gain-of-function, associated with a disrupted gate allowing inward transport at negative voltages. Functional results were not always in line with in silico pathogenicity scores, highlighting the complexity of pathogenicity assessment for accurate genetic counselling. The complex neurocognitive and psychiatric manifestations of this condition, and hitherto under-recognized impacts on growth, gastrointestinal function, and motor control are discussed. Including published cases, we summarize features in 122 individuals from 67 families with CLCN4-related neurodevelopmental condition and suggest future research directions with the aim of improving the integrated care for individuals with this diagnosis.

Published
2023

2. Functional and clinical studies reveal pathophysiological complexity of CLCN4-related neurodevelopmental condition.

Author

Palmer, E.E., Pusch, M., Picollo, A., Forwood, C., Nguyen, M.H., Suckow, V., Gibbons, J., Hoff, A., Sigfrid, L., Megarbane, A., Nizon, M., Cogné, B., Beneteau, C., Alkuraya, F.S., Chedrawi, A., Hashem, M.O., Stamberger, H., Weckhuysen, S., Vanlander, A., Ceulemans, B., Rajagopalan, S., Nunn, K., Arpin, S., Raynaud, M., Motter, C.S., Ward-Melver, C., Janssens, K., Meuwissen, M., Beysen, D., Dikow, N., Grimmel, M., Haack, T.B., Clement, E., McTague, A., Hunt, D., Townshend, S., Ward, M., Richards, L.J., Simons, C., Costain, G., Dupuis, L., Mendoza-Londono, R., Dudding-Byth, T., Boyle, J., Saunders, C., Fleming, E., Chehadeh, S. El, Spitz, M.A., Piton, A., Gerard, B., bi Warde, M.T. A, Rea, G., McKenna, C., Douzgou, S., Banka, S., Akman, C., Bain, J.M., Sands, T.T., Wilson, G.N., Silvertooth, E.J., Miller, L., Lederer, D., Sachdev, R., Macintosh, R., Monestier, O., Karadurmus, D., Collins, F., Carter, M., Rohena, L., Willemsen, M.H., Ockeloen, C.W., Pfundt, R.P., Kroft, S.D., Field, M., Laranjeira, F.E.R., Fortuna, A.M., Soares, A.R., Michaud, V., Naudion, S., Golla, S., Weaver, D.D., Bird, L.M., Friedman, J., Clowes, V., Joss, S., Pölsler, L., Campeau, P.M., Blazo, M., Bijlsma, E.K., Rosenfeld, J.A., Beetz, C., Powis, Z., McWalter, K., Brandt, T., Torti, E., Mathot, M., Mohammad, S.S., Armstrong, R., Kalscheuer, V.M., Palmer, E.E., Pusch, M., Picollo, A., Forwood, C., Nguyen, M.H., Suckow, V., Gibbons, J., Hoff, A., Sigfrid, L., Megarbane, A., Nizon, M., Cogné, B., Beneteau, C., Alkuraya, F.S., Chedrawi, A., Hashem, M.O., Stamberger, H., Weckhuysen, S., Vanlander, A., Ceulemans, B., Rajagopalan, S., Nunn, K., Arpin, S., Raynaud, M., Motter, C.S., Ward-Melver, C., Janssens, K., Meuwissen, M., Beysen, D., Dikow, N., Grimmel, M., Haack, T.B., Clement, E., McTague, A., Hunt, D., Townshend, S., Ward, M., Richards, L.J., Simons, C., Costain, G., Dupuis, L., Mendoza-Londono, R., Dudding-Byth, T., Boyle, J., Saunders, C., Fleming, E., Chehadeh, S. El, Spitz, M.A., Piton, A., Gerard, B., bi Warde, M.T. A, Rea, G., McKenna, C., Douzgou, S., Banka, S., Akman, C., Bain, J.M., Sands, T.T., Wilson, G.N., Silvertooth, E.J., Miller, L., Lederer, D., Sachdev, R., Macintosh, R., Monestier, O., Karadurmus, D., Collins, F., Carter, M., Rohena, L., Willemsen, M.H., Ockeloen, C.W., Pfundt, R.P., Kroft, S.D., Field, M., Laranjeira, F.E.R., Fortuna, A.M., Soares, A.R., Michaud, V., Naudion, S., Golla, S., Weaver, D.D., Bird, L.M., Friedman, J., Clowes, V., Joss, S., Pölsler, L., Campeau, P.M., Blazo, M., Bijlsma, E.K., Rosenfeld, J.A., Beetz, C., Powis, Z., McWalter, K., Brandt, T., Torti, E., Mathot, M., Mohammad, S.S., Armstrong, R., and Kalscheuer, V.M.

Abstract

01 februari 2023, Item does not contain fulltext, Missense and truncating variants in the X-chromosome-linked CLCN4 gene, resulting in reduced or complete loss-of-function (LOF) of the encoded chloride/proton exchanger ClC-4, were recently demonstrated to cause a neurocognitive phenotype in both males and females. Through international clinical matchmaking and interrogation of public variant databases we assembled a database of 90 rare CLCN4 missense variants in 90 families: 41 unique and 18 recurrent variants in 49 families. For 43 families, including 22 males and 33 females, we collated detailed clinical and segregation data. To confirm causality of variants and to obtain insight into disease mechanisms, we investigated the effect on electrophysiological properties of 59 of the variants in Xenopus oocytes using extended voltage and pH ranges. Detailed analyses revealed new pathophysiological mechanisms: 25% (15/59) of variants demonstrated LOF, characterized by a "shift" of the voltage-dependent activation to more positive voltages, and nine variants resulted in a toxic gain-of-function, associated with a disrupted gate allowing inward transport at negative voltages. Functional results were not always in line with in silico pathogenicity scores, highlighting the complexity of pathogenicity assessment for accurate genetic counselling. The complex neurocognitive and psychiatric manifestations of this condition, and hitherto under-recognized impacts on growth, gastrointestinal function, and motor control are discussed. Including published cases, we summarize features in 122 individuals from 67 families with CLCN4-related neurodevelopmental condition and suggest future research directions with the aim of improving the integrated care for individuals with this diagnosis.

Published
2023

3. Partial Loss of USP9X Function Leads to a Male Neurodevelopmental and Behavioral Disorder Converging on Transforming Growth Factor beta Signaling

Author

Johnson, B.V., Kumar, R., Oishi, S., Alexander, S., Kasherman, M., Vega, M.S., Ivancevic, A., Gardner, A., Domingo, D., Corbett, M., Parnell, E., Yoon, S., Oh, T., Lines, M., Lefroy, H., Kini, U., Allen, M., Gronborg, S., Mercier, S., Kury, S., Bezieau, S., Pasquier, L., Raynaud, M., Afenjar, A., Villemeur, T. Billette de, Keren, B., Desir, J., Maldergem, L. Van, Marangoni, M., Dikow, N., Koolen, D.A., VanHasselt, P.M., Weiss, M., Zwijnenburg, P., Sa, J., Reis, C.F., Lopez-Otin, C., Santiago-Fernandez, O., Fernandez-Jaen, A., Rauch, A., Steindl, K., Joset, P., Goldstein, A., Madan-Khetarpal, S., Infante, E., Zackai, E., McDougall, C., Narayanan, V., Ramsey, K., Mercimek-Andrews, S., Pena, L., Shashi, V., Schoch, K., Sullivan, J.A., Pinto, E.V.F., Pichurin, P.N., Ewing, S.A., Barnett, S.S., Klee, E.W., Perry, M.S., Koenig, M.K., Keegan, C.E., Schuette, J.L., Asher, S., Perilla-Young, Y., Smith, L.D., Rosenfeld, J.A., Bhoj, E., Kaplan, P., Li, D., Oegema, R., Binsbergen, E. van, Zwaag, B. van der, Smeland, M.F., Cutcutache, I., Page, M., Armstrong, M., Lin, A.E., Steeves, M.A., Hollander, N.D., Hoffer, M.J.V., Reijnders, M.R., Demirdas, S., Koboldt, D.C., Bartholomew, D., Mosher, T.M., Hickey, S.E., Shieh, C., Sanchez-Lara, P.A., Graham, J.M., Tezcan, K., Schaefer, G.B., Danylchuk, N.R., Asamoah, A., Jackson, K.E., Yachelevich, N., Au, M., Perez-Jurado, L.A., Kleefstra, T., Penzes, P., Gécz, J., Jolly, L.A., Johnson, B.V., Kumar, R., Oishi, S., Alexander, S., Kasherman, M., Vega, M.S., Ivancevic, A., Gardner, A., Domingo, D., Corbett, M., Parnell, E., Yoon, S., Oh, T., Lines, M., Lefroy, H., Kini, U., Allen, M., Gronborg, S., Mercier, S., Kury, S., Bezieau, S., Pasquier, L., Raynaud, M., Afenjar, A., Villemeur, T. Billette de, Keren, B., Desir, J., Maldergem, L. Van, Marangoni, M., Dikow, N., Koolen, D.A., VanHasselt, P.M., Weiss, M., Zwijnenburg, P., Sa, J., Reis, C.F., Lopez-Otin, C., Santiago-Fernandez, O., Fernandez-Jaen, A., Rauch, A., Steindl, K., Joset, P., Goldstein, A., Madan-Khetarpal, S., Infante, E., Zackai, E., McDougall, C., Narayanan, V., Ramsey, K., Mercimek-Andrews, S., Pena, L., Shashi, V., Schoch, K., Sullivan, J.A., Pinto, E.V.F., Pichurin, P.N., Ewing, S.A., Barnett, S.S., Klee, E.W., Perry, M.S., Koenig, M.K., Keegan, C.E., Schuette, J.L., Asher, S., Perilla-Young, Y., Smith, L.D., Rosenfeld, J.A., Bhoj, E., Kaplan, P., Li, D., Oegema, R., Binsbergen, E. van, Zwaag, B. van der, Smeland, M.F., Cutcutache, I., Page, M., Armstrong, M., Lin, A.E., Steeves, M.A., Hollander, N.D., Hoffer, M.J.V., Reijnders, M.R., Demirdas, S., Koboldt, D.C., Bartholomew, D., Mosher, T.M., Hickey, S.E., Shieh, C., Sanchez-Lara, P.A., Graham, J.M., Tezcan, K., Schaefer, G.B., Danylchuk, N.R., Asamoah, A., Jackson, K.E., Yachelevich, N., Au, M., Perez-Jurado, L.A., Kleefstra, T., Penzes, P., Gécz, J., and Jolly, L.A.

Abstract

Contains fulltext : 218305.pdf (Publisher’s version ) (Closed access), BACKGROUND: The X-chromosome gene USP9X encodes a deubiquitylating enzyme that has been associated with neurodevelopmental disorders primarily in female subjects. USP9X escapes X inactivation, and in female subjects de novo heterozygous copy number loss or truncating mutations cause haploinsufficiency culminating in a recognizable syndrome with intellectual disability and signature brain and congenital abnormalities. In contrast, the involvement of USP9X in male neurodevelopmental disorders remains tentative. METHODS: We used clinically recommended guidelines to collect and interrogate the pathogenicity of 44 USP9X variants associated with neurodevelopmental disorders in males. Functional studies in patient-derived cell lines and mice were used to determine mechanisms of pathology. RESULTS: Twelve missense variants showed strong evidence of pathogenicity. We define a characteristic phenotype of the central nervous system (white matter disturbances, thin corpus callosum, and widened ventricles); global delay with significant alteration of speech, language, and behavior; hypotonia; joint hypermobility; visual system defects; and other common congenital and dysmorphic features. Comparison of in silico and phenotypical features align additional variants of unknown significance with likely pathogenicity. In support of partial loss-of-function mechanisms, using patient-derived cell lines, we show loss of only specific USP9X substrates that regulate neurodevelopmental signaling pathways and a united defect in transforming growth factor beta signaling. In addition, we find correlates of the male phenotype in Usp9x brain-specific knockout mice, and further resolve loss of hippocampal-dependent learning and memory. CONCLUSIONS: Our data demonstrate the involvement of USP9X variants in a distinctive neurodevelopmental and behavioral syndrome in male subjects and identify plausible mechanisms of pathogenesis centered on disrupted transforming growth factor beta signaling and hi

Published
2020

4. Clinical-pathological Characterization of 1078 Advice Seekers with pathogenic CHEK2 Mutation from the German Consortium of Familial Breast and Ovarian Cancer (DK-FBREK)

Author

Bosse, Autoren K., Faust, U., Gruber, I, Habhab, W., Guenther, G., Siebers-Renelt, U., Kiechle, M., Speiser, D., Dikow, N., Kast, K., Arnold, N., Vesper, A-S, Harbeck, N., Briest, S., Thomssen, C., Gehrig, A., Wallaschek, H., Solbach, C., Wolf, M., Witzel, I, Holzhauser, I, Kaulfuss, S., Janni, W., Engel, C., Riess, O., Schmutzler, R., Schroeder, C., Bosse, Autoren K., Faust, U., Gruber, I, Habhab, W., Guenther, G., Siebers-Renelt, U., Kiechle, M., Speiser, D., Dikow, N., Kast, K., Arnold, N., Vesper, A-S, Harbeck, N., Briest, S., Thomssen, C., Gehrig, A., Wallaschek, H., Solbach, C., Wolf, M., Witzel, I, Holzhauser, I, Kaulfuss, S., Janni, W., Engel, C., Riess, O., Schmutzler, R., and Schroeder, C.

Published
2020

5. Clinical and molecular characterization of 1253 carriers of a deleterious CHEK2 mutation from the German Consortium for Hereditary Breast and Ovarian Cancer (GC-HBOC)

Author

Habhab, W., Faust, U., Guenther, G., Siebers-Renelt, U., Kiechle, M., Ott, C., Dikow, N., Kast, K., Vesper, A., Solbach, C., Harbeck, N., Stiller, M., Gehrig, A., Thomssen, C., Wallaschek, H., Arnold, N., Holzhauser, I., Kaulfuss, S., Volk, A., Janni, W., Engel, C., Schmutzler, R., Riess, O., Schroeder, C., Bosse, K., Habhab, W., Faust, U., Guenther, G., Siebers-Renelt, U., Kiechle, M., Ott, C., Dikow, N., Kast, K., Vesper, A., Solbach, C., Harbeck, N., Stiller, M., Gehrig, A., Thomssen, C., Wallaschek, H., Arnold, N., Holzhauser, I., Kaulfuss, S., Volk, A., Janni, W., Engel, C., Schmutzler, R., Riess, O., Schroeder, C., and Bosse, K.

Published
2020

6. Partial Loss of USP9X Function Leads to a Male Neurodevelopmental and Behavioral Disorder Converging on Transforming Growth Factor beta Signaling

Author

Johnson, B.V., Kumar, R., Oishi, S., Alexander, S., Kasherman, M., Vega, M.S., Ivancevic, A., Gardner, A., Domingo, D., Corbett, M., Parnell, E., Yoon, S., Oh, T., Lines, M., Lefroy, H., Kini, U., Allen, M., Gronborg, S., Mercier, S., Kury, S., Bezieau, S., Pasquier, L., Raynaud, M., Afenjar, A., Villemeur, T. Billette de, Keren, B., Desir, J., Maldergem, L. Van, Marangoni, M., Dikow, N., Koolen, D.A., VanHasselt, P.M., Weiss, M., Zwijnenburg, P., Sa, J., Reis, C.F., Lopez-Otin, C., Santiago-Fernandez, O., Fernandez-Jaen, A., Rauch, A., Steindl, K., Joset, P., Goldstein, A., Madan-Khetarpal, S., Infante, E., Zackai, E., McDougall, C., Narayanan, V., Ramsey, K., Mercimek-Andrews, S., Pena, L., Shashi, V., Schoch, K., Sullivan, J.A., Pinto, E.V.F., Pichurin, P.N., Ewing, S.A., Barnett, S.S., Klee, E.W., Perry, M.S., Koenig, M.K., Keegan, C.E., Schuette, J.L., Asher, S., Perilla-Young, Y., Smith, L.D., Rosenfeld, J.A., Bhoj, E., Kaplan, P., Li, D., Oegema, R., Binsbergen, E. van, Zwaag, B. van der, Smeland, M.F., Cutcutache, I., Page, M., Armstrong, M., Lin, A.E., Steeves, M.A., Hollander, N.D., Hoffer, M.J.V., Reijnders, M.R., Demirdas, S., Koboldt, D.C., Bartholomew, D., Mosher, T.M., Hickey, S.E., Shieh, C., Sanchez-Lara, P.A., Graham, J.M., Tezcan, K., Schaefer, G.B., Danylchuk, N.R., Asamoah, A., Jackson, K.E., Yachelevich, N., Au, M., Perez-Jurado, L.A., Kleefstra, T., Penzes, P., Gécz, J., Jolly, L.A., Johnson, B.V., Kumar, R., Oishi, S., Alexander, S., Kasherman, M., Vega, M.S., Ivancevic, A., Gardner, A., Domingo, D., Corbett, M., Parnell, E., Yoon, S., Oh, T., Lines, M., Lefroy, H., Kini, U., Allen, M., Gronborg, S., Mercier, S., Kury, S., Bezieau, S., Pasquier, L., Raynaud, M., Afenjar, A., Villemeur, T. Billette de, Keren, B., Desir, J., Maldergem, L. Van, Marangoni, M., Dikow, N., Koolen, D.A., VanHasselt, P.M., Weiss, M., Zwijnenburg, P., Sa, J., Reis, C.F., Lopez-Otin, C., Santiago-Fernandez, O., Fernandez-Jaen, A., Rauch, A., Steindl, K., Joset, P., Goldstein, A., Madan-Khetarpal, S., Infante, E., Zackai, E., McDougall, C., Narayanan, V., Ramsey, K., Mercimek-Andrews, S., Pena, L., Shashi, V., Schoch, K., Sullivan, J.A., Pinto, E.V.F., Pichurin, P.N., Ewing, S.A., Barnett, S.S., Klee, E.W., Perry, M.S., Koenig, M.K., Keegan, C.E., Schuette, J.L., Asher, S., Perilla-Young, Y., Smith, L.D., Rosenfeld, J.A., Bhoj, E., Kaplan, P., Li, D., Oegema, R., Binsbergen, E. van, Zwaag, B. van der, Smeland, M.F., Cutcutache, I., Page, M., Armstrong, M., Lin, A.E., Steeves, M.A., Hollander, N.D., Hoffer, M.J.V., Reijnders, M.R., Demirdas, S., Koboldt, D.C., Bartholomew, D., Mosher, T.M., Hickey, S.E., Shieh, C., Sanchez-Lara, P.A., Graham, J.M., Tezcan, K., Schaefer, G.B., Danylchuk, N.R., Asamoah, A., Jackson, K.E., Yachelevich, N., Au, M., Perez-Jurado, L.A., Kleefstra, T., Penzes, P., Gécz, J., and Jolly, L.A.

Abstract

Contains fulltext : 218305.pdf (Publisher’s version ) (Closed access), BACKGROUND: The X-chromosome gene USP9X encodes a deubiquitylating enzyme that has been associated with neurodevelopmental disorders primarily in female subjects. USP9X escapes X inactivation, and in female subjects de novo heterozygous copy number loss or truncating mutations cause haploinsufficiency culminating in a recognizable syndrome with intellectual disability and signature brain and congenital abnormalities. In contrast, the involvement of USP9X in male neurodevelopmental disorders remains tentative. METHODS: We used clinically recommended guidelines to collect and interrogate the pathogenicity of 44 USP9X variants associated with neurodevelopmental disorders in males. Functional studies in patient-derived cell lines and mice were used to determine mechanisms of pathology. RESULTS: Twelve missense variants showed strong evidence of pathogenicity. We define a characteristic phenotype of the central nervous system (white matter disturbances, thin corpus callosum, and widened ventricles); global delay with significant alteration of speech, language, and behavior; hypotonia; joint hypermobility; visual system defects; and other common congenital and dysmorphic features. Comparison of in silico and phenotypical features align additional variants of unknown significance with likely pathogenicity. In support of partial loss-of-function mechanisms, using patient-derived cell lines, we show loss of only specific USP9X substrates that regulate neurodevelopmental signaling pathways and a united defect in transforming growth factor beta signaling. In addition, we find correlates of the male phenotype in Usp9x brain-specific knockout mice, and further resolve loss of hippocampal-dependent learning and memory. CONCLUSIONS: Our data demonstrate the involvement of USP9X variants in a distinctive neurodevelopmental and behavioral syndrome in male subjects and identify plausible mechanisms of pathogenesis centered on disrupted transforming growth factor beta signaling and hi

Published
2020

7. Partial Loss of USP9X Function Leads to a Male Neurodevelopmental and Behavioral Disorder Converging on Transforming Growth Factor beta Signaling

Author

Johnson, B.V., Kumar, R., Oishi, S., Alexander, S., Kasherman, M., Vega, M.S., Ivancevic, A., Gardner, A., Domingo, D., Corbett, M., Parnell, E., Yoon, S., Oh, T., Lines, M., Lefroy, H., Kini, U., Allen, M., Gronborg, S., Mercier, S., Kury, S., Bezieau, S., Pasquier, L., Raynaud, M., Afenjar, A., Villemeur, T. Billette de, Keren, B., Desir, J., Maldergem, L. Van, Marangoni, M., Dikow, N., Koolen, D.A., VanHasselt, P.M., Weiss, M., Zwijnenburg, P., Sa, J., Reis, C.F., Lopez-Otin, C., Santiago-Fernandez, O., Fernandez-Jaen, A., Rauch, A., Steindl, K., Joset, P., Goldstein, A., Madan-Khetarpal, S., Infante, E., Zackai, E., McDougall, C., Narayanan, V., Ramsey, K., Mercimek-Andrews, S., Pena, L., Shashi, V., Schoch, K., Sullivan, J.A., Pinto, E.V.F., Pichurin, P.N., Ewing, S.A., Barnett, S.S., Klee, E.W., Perry, M.S., Koenig, M.K., Keegan, C.E., Schuette, J.L., Asher, S., Perilla-Young, Y., Smith, L.D., Rosenfeld, J.A., Bhoj, E., Kaplan, P., Li, D., Oegema, R., Binsbergen, E. van, Zwaag, B. van der, Smeland, M.F., Cutcutache, I., Page, M., Armstrong, M., Lin, A.E., Steeves, M.A., Hollander, N.D., Hoffer, M.J.V., Reijnders, M.R., Demirdas, S., Koboldt, D.C., Bartholomew, D., Mosher, T.M., Hickey, S.E., Shieh, C., Sanchez-Lara, P.A., Graham, J.M., Tezcan, K., Schaefer, G.B., Danylchuk, N.R., Asamoah, A., Jackson, K.E., Yachelevich, N., Au, M., Perez-Jurado, L.A., Kleefstra, T., Penzes, P., Gécz, J., Jolly, L.A., Johnson, B.V., Kumar, R., Oishi, S., Alexander, S., Kasherman, M., Vega, M.S., Ivancevic, A., Gardner, A., Domingo, D., Corbett, M., Parnell, E., Yoon, S., Oh, T., Lines, M., Lefroy, H., Kini, U., Allen, M., Gronborg, S., Mercier, S., Kury, S., Bezieau, S., Pasquier, L., Raynaud, M., Afenjar, A., Villemeur, T. Billette de, Keren, B., Desir, J., Maldergem, L. Van, Marangoni, M., Dikow, N., Koolen, D.A., VanHasselt, P.M., Weiss, M., Zwijnenburg, P., Sa, J., Reis, C.F., Lopez-Otin, C., Santiago-Fernandez, O., Fernandez-Jaen, A., Rauch, A., Steindl, K., Joset, P., Goldstein, A., Madan-Khetarpal, S., Infante, E., Zackai, E., McDougall, C., Narayanan, V., Ramsey, K., Mercimek-Andrews, S., Pena, L., Shashi, V., Schoch, K., Sullivan, J.A., Pinto, E.V.F., Pichurin, P.N., Ewing, S.A., Barnett, S.S., Klee, E.W., Perry, M.S., Koenig, M.K., Keegan, C.E., Schuette, J.L., Asher, S., Perilla-Young, Y., Smith, L.D., Rosenfeld, J.A., Bhoj, E., Kaplan, P., Li, D., Oegema, R., Binsbergen, E. van, Zwaag, B. van der, Smeland, M.F., Cutcutache, I., Page, M., Armstrong, M., Lin, A.E., Steeves, M.A., Hollander, N.D., Hoffer, M.J.V., Reijnders, M.R., Demirdas, S., Koboldt, D.C., Bartholomew, D., Mosher, T.M., Hickey, S.E., Shieh, C., Sanchez-Lara, P.A., Graham, J.M., Tezcan, K., Schaefer, G.B., Danylchuk, N.R., Asamoah, A., Jackson, K.E., Yachelevich, N., Au, M., Perez-Jurado, L.A., Kleefstra, T., Penzes, P., Gécz, J., and Jolly, L.A.

Abstract

Contains fulltext : 218305.pdf (Publisher’s version ) (Closed access), BACKGROUND: The X-chromosome gene USP9X encodes a deubiquitylating enzyme that has been associated with neurodevelopmental disorders primarily in female subjects. USP9X escapes X inactivation, and in female subjects de novo heterozygous copy number loss or truncating mutations cause haploinsufficiency culminating in a recognizable syndrome with intellectual disability and signature brain and congenital abnormalities. In contrast, the involvement of USP9X in male neurodevelopmental disorders remains tentative. METHODS: We used clinically recommended guidelines to collect and interrogate the pathogenicity of 44 USP9X variants associated with neurodevelopmental disorders in males. Functional studies in patient-derived cell lines and mice were used to determine mechanisms of pathology. RESULTS: Twelve missense variants showed strong evidence of pathogenicity. We define a characteristic phenotype of the central nervous system (white matter disturbances, thin corpus callosum, and widened ventricles); global delay with significant alteration of speech, language, and behavior; hypotonia; joint hypermobility; visual system defects; and other common congenital and dysmorphic features. Comparison of in silico and phenotypical features align additional variants of unknown significance with likely pathogenicity. In support of partial loss-of-function mechanisms, using patient-derived cell lines, we show loss of only specific USP9X substrates that regulate neurodevelopmental signaling pathways and a united defect in transforming growth factor beta signaling. In addition, we find correlates of the male phenotype in Usp9x brain-specific knockout mice, and further resolve loss of hippocampal-dependent learning and memory. CONCLUSIONS: Our data demonstrate the involvement of USP9X variants in a distinctive neurodevelopmental and behavioral syndrome in male subjects and identify plausible mechanisms of pathogenesis centered on disrupted transforming growth factor beta signaling and hi

Published
2020

8. Clinical-pathological Characterization of 1078 Advice Seekers with pathogenic CHEK2 Mutation from the German Consortium of Familial Breast and Ovarian Cancer (DK-FBREK)

Author

Bosse, Autoren K., Faust, U., Gruber, I, Habhab, W., Guenther, G., Siebers-Renelt, U., Kiechle, M., Speiser, D., Dikow, N., Kast, K., Arnold, N., Vesper, A-S, Harbeck, N., Briest, S., Thomssen, C., Gehrig, A., Wallaschek, H., Solbach, C., Wolf, M., Witzel, I, Holzhauser, I, Kaulfuss, S., Janni, W., Engel, C., Riess, O., Schmutzler, R., Schroeder, C., Bosse, Autoren K., Faust, U., Gruber, I, Habhab, W., Guenther, G., Siebers-Renelt, U., Kiechle, M., Speiser, D., Dikow, N., Kast, K., Arnold, N., Vesper, A-S, Harbeck, N., Briest, S., Thomssen, C., Gehrig, A., Wallaschek, H., Solbach, C., Wolf, M., Witzel, I, Holzhauser, I, Kaulfuss, S., Janni, W., Engel, C., Riess, O., Schmutzler, R., and Schroeder, C.

Published
2020

9. Clinical and molecular characterization of 1253 carriers of a deleterious CHEK2 mutation from the German Consortium for Hereditary Breast and Ovarian Cancer (GC-HBOC)

Author

Habhab, W., Faust, U., Guenther, G., Siebers-Renelt, U., Kiechle, M., Ott, C., Dikow, N., Kast, K., Vesper, A., Solbach, C., Harbeck, N., Stiller, M., Gehrig, A., Thomssen, C., Wallaschek, H., Arnold, N., Holzhauser, I., Kaulfuss, S., Volk, A., Janni, W., Engel, C., Schmutzler, R., Riess, O., Schroeder, C., Bosse, K., Habhab, W., Faust, U., Guenther, G., Siebers-Renelt, U., Kiechle, M., Ott, C., Dikow, N., Kast, K., Vesper, A., Solbach, C., Harbeck, N., Stiller, M., Gehrig, A., Thomssen, C., Wallaschek, H., Arnold, N., Holzhauser, I., Kaulfuss, S., Volk, A., Janni, W., Engel, C., Schmutzler, R., Riess, O., Schroeder, C., and Bosse, K.

Published
2020

10. Consensus recommendation of the German Consortium for Hereditary Breast and Ovarian Cancer (GC-HBOC) on the transfer of multigene analysis data into the clinical care program

Author

Waha, A., Versmold, B., Kast, K., Kiechle, M., Ditsch, N., Meindl, A., Niederacher, D., Hahnen, E., Arnold, N., Mundhenke, C., Horvath, J., Bernd, A., Dikow, N., Hauke, J., Wappenschmidt, B., Riess, O., Schott, S., Speiser, D., Faust, U., Sutter, C., Rhiem, K., Schmutzler, R. K., Waha, A., Versmold, B., Kast, K., Kiechle, M., Ditsch, N., Meindl, A., Niederacher, D., Hahnen, E., Arnold, N., Mundhenke, C., Horvath, J., Bernd, A., Dikow, N., Hauke, J., Wappenschmidt, B., Riess, O., Schott, S., Speiser, D., Faust, U., Sutter, C., Rhiem, K., and Schmutzler, R. K.

Published
2018

11. Consensus recommendation of the German Consortium for Hereditary Breast and Ovarian Cancer (GC-HBOC) on the transfer of multigene analysis data into the clinical care program

Author

Waha, A., Versmold, B., Kast, K., Kiechle, M., Ditsch, N., Meindl, A., Niederacher, D., Hahnen, E., Arnold, N., Mundhenke, C., Horvath, J., Bernd, A., Dikow, N., Hauke, J., Wappenschmidt, B., Riess, O., Schott, S., Speiser, D., Faust, U., Sutter, C., Rhiem, K., Schmutzler, R. K., Waha, A., Versmold, B., Kast, K., Kiechle, M., Ditsch, N., Meindl, A., Niederacher, D., Hahnen, E., Arnold, N., Mundhenke, C., Horvath, J., Bernd, A., Dikow, N., Hauke, J., Wappenschmidt, B., Riess, O., Schott, S., Speiser, D., Faust, U., Sutter, C., Rhiem, K., and Schmutzler, R. K.

Published
2018

12. Association of type and location of BRCA1 and BRCA2 mutations with risk of breast and ovarian cancer

Author

Rebbeck, R. (Timothy), Mitra, N. (Nandita), Wan, F. (Fei), Sinilnikova, O. (Olga), Healey, S. (Sue), McGuffog, L. (Lesley), Chenevix-Trench, G. (Georgia), Easton, D.F. (Douglas), Antoniou, A.C. (Antonis), Nathanson, K.L. (Katherine), Laitman, Y. (Yael), Kushnir, A. (Anya), Paluch-Shimon, S. (Shani), Berger, R. (Raanan), Zidan, J. (Jamal), Friedman, E. (Eitan), Ehrencrona, H. (Hans), Stenmark-Askmalm, M. (Marie), Einbeigi, Z. (Zakaria), Loman, N. (Niklas), Harbst, K. (Katja), Rantala, J. (Johanna), Melin, B. (Beatrice), Huo, D. (Dezheng), Olopade, O.I. (Olofunmilayo), Seldon, J.L. (Joyce), Ganz, P.A. (Patricia), Nussbaum, R.L. (Robert L.), Chan, S. (Salina), Odunsi, K. (Kunle), Gayther, S.A. (Simon), Domchek, S.M. (Susan), Arun, B.K. (Banu), Lu, K.H. (Karen), Mitchell, G. (Gillian), Karlan, B.Y. (Beth), Walsh, C.S. (Christine), Lester, K.J. (Kathryn), Godwin, A.K. (Andrew), Pathak, S.S., Ross, E.B. (Eric), Daly, M.J. (Mark), Whittemore, A.S. (Alice), John, E.M. (Esther), Miron, A. (Alexander), Terry, M.B. (Mary Beth), Chung, W.K. (Wendy K.), Goldgar, D. (David), Buys, S.S. (Saundra), Janavicius, R. (Ramunas), Tihomirova, L. (Laima), Tung, N. (Nadine), Dorfling, C.M. (Cecilia), Rensburg, E.J. (Elizabeth) van, Steele, L. (Linda), Neuhausen, S.L. (Susan), Ding, Y.C. (Yuan), Ejlertsen, B. (Bent), Gerdes, A-M. (Anne-Marie), Hansen, T.V.O. (Thomas), Ramon Y Cajal, T., Osorio, A. (Ana), Benítez, J. (Javier), Godino, J. (Javier), Tejada, M.I., Duran, M. (Mercedes), Weitzel, J.N. (Jeffrey), Bobolis, K.A. (Kristie A.), Sand, S.R. (Sharon), Fontaine, A. (Annette), Savarese, A. (Antonella), Pasini, B. (Barbara), Peissel, B. (Bernard), Bonnani, B. (Bernardo), Zaffaroni, D. (Daniela), Vignolo-Lutati, F. (Francesca), Scuvera, G. (Giulietta), Giannini, G. (Giuseppe), Bernard, L. (Loris), Genuardi, M. (Maurizio), Radice, P. (Paolo), Dolcetti, R. (Riccardo), Manoukian, S. (Siranoush), Pensotti, V. (Valeria), Gismondi, V. (Viviana), Yannoukakos, D. (Drakoulis), Fostira, F. (Florentia), Garber, J. (Judy), Torres, D. (Diana), Rashid, M.U. (Muhammad), Hamann, U. (Ute), Peock, S. (Susan), Frost, D. (Debra), Platte, R. (Radka), Evans, D.G. (Gareth), Eeles, R. (Rosalind), Davidson, R. (Rosemarie), Eccles, D. (Diana), Cole, T. (Trevor), Cook, J. (Jackie), Brewer, C. (Carole), Hodgson, S. (Shirley), Morrison, P.J. (Patrick), Walker, L.J. (Lisa), Porteous, M.E. (Mary), Kennedy, M.J. (John), Izatt, L. (Louise), Adlard, L., Donaldson, A. (Alan), Ellis, S.D. (Steve), Sharma, P. (Priyanka), Schmutzler, R.K. (Rita), Wapenschmidt, B. (Barbara), Becker, A. (Alexandra), Rhiem, K. (Kerstin), Hahnen, E. (Eric), Engel, C. (Christoph), Meindl, A. (Alfons), Engert, S. (Stefanie), Ditsch, N. (Nina), Arnold, N. (Norbert), Plendl, H. (Hansjoerg), Mundhenke, C. (Christoph), Niederacher, D. (Dieter), Fleisch, M.C. (Markus), Sutter, C. (Christian), Bartram, C.R. (Claus), Dikow, N. (Nicola), Wang-Gohrke, S. (Shan), Gadzicki, D. (Dorothea), Steinemann, D. (Doris), Kast, K. (Karin), Beer, M. (Marit), Varon-Mateeva, R. (Raymonda), Gehrig, P.A. (Paola A.), Weber, B.H.F. (Bernhard), Stoppa-Lyonnet, D. (Dominique), Belotti, M. (Muriel), Gauthier-Villars, M. (Marion), Damiola, F. (Francesca), Boutry-Kryza, N. (N.), Lasset, C. (Christine), Sobol, H. (Hagay), Peyrat, J.-P., Muller, D.W. (Danièle), Fricker, J.P. (Jean Pierre), Collonge-Rame, M.-A., Mortemousque, I. (Isabelle), Nogues, C. (Catherine), Rouleau, E. (Etienne), Isaacs, C. (Claudine), Paepe, A. (Anne) de, Poppe, B. (Bruce), Claes, K. (Kathleen), De Leeneer, K. (Kim), Piedmonte, M. (Marion), Rodriguez, G. (Gustavo), Wakely, K. (Katie), Boggess, J.F. (John), Blank, S.V. (Stephanie), Basil, J. (Jack), Azodi, M. (Masoud), Phillips, K.-A. (Kelly-Anne), Caldes, T. (Trinidad), Hoya, M. (Miguel) de La, Romero, A. (Atocha), Nevanlinna, H. (Heli), Aittomäki, K. (Kristiina), Hout, A.H. (Annemarie) van der, Hogervorst, F.B.L. (Frans), Verhoef, S., Collée, J.M. (Margriet), Seynaeve, C.M. (Caroline), Oosterwijk, J.C. (Jan), Gille, J.J. (Johan), Wijnen, J.T. (Juul), Gómez García, E.B. (Encarna), Kets, C.M. (Marleen), Ausems, M.G.E.M. (Margreet), Aalfs, C.M. (Cora), Devilee, P. (Peter), Mensenkamp, A.R. (Arjen), Kwong, A. (Ava), Olah, E., Papp, J. (Janos), Díez, O. (Orland), Lázaro, C. (Conxi), Darder, E. (Esther), Blanco, I. (Ignacio), Salinas, M., Jakubowska, A. (Anna), Lubinski, J. (Jan), Gronwald, J. (Jacek), Jaworska-Bieniek, K. (Katarzyna), Durda, K. (Katarzyna), Sukiennicki, G. (Grzegorz), Huzarski, T. (Tomasz), Byrski, T. (Tomasz), Cybulski, C. (Cezary), Toloczko-Grabarek, A. (Aleksandra), Złowocka-Perłowska, E. (Elzbieta), Menkiszak, J. (Janusz), Arason, A. (Adalgeir), Barkardottir, R.B. (Rosa), Simard, J. (Jacques), Laframboise, R. (Rachel), Montagna, M. (Marco), Agata, S. (Simona), Alducci, E. (Elisa), Peixoto, A. (Ana), Teixeira, P.J., Spurdle, A.B. (Amanda), Lee, M.H. (Min Hyuk), Park, S.K. (Sue), Kim, S.-W. (Sung-Won), Friebel, M.O.W. (Mark ), Couch, F.J. (Fergus), Lindor, N.M. (Noralane), Pankratz, V.S. (Shane), Guidugli, L. (Lucia), Wang, X. (Xianshu), Tischkowitz, M. (Marc), Foretova, L. (Lenka), Vijai, J. (Joseph), Offit, K. (Kenneth), Robson, M. (Mark), Rau-Murthy, R. (Rohini), Kauff, N. (Noah), Fink-Retter, A. (Anneliese), Singer, C.F. (Christian), Rappaport, C. (Christine), Gschwantler-Kaulich, D. (Daphne), Pfeiler, G. (Georg), Tea, M.-K., Berger, A. (Andreas), Greene, M.H. (Mark), Mai, P.L. (Phuong), Imyanitov, E.N. (Evgeny), Toland, A.E. (Amanda), Senter, L. (Leigha), Bojesen, A. (Anders), Pedersen, I.S. (Inge Sokilde), Skytte, A.-B. (Anne-Bine), Sunde, L. (Lone), Thomassen, M. (Mads), Moeller, S.T. (Sanne Traasdahl), Kruse, T.A. (Torben), Jensen, U.B., Caligo, M.A. (Maria), Aretini, P. (Paolo), Teo, S.-H. (Soo-Hwang), Selkirk, C.G. (Christina), Hulick, P.J. (Peter), Andrulis, I.L. (Irene), Rebbeck, R. (Timothy), Mitra, N. (Nandita), Wan, F. (Fei), Sinilnikova, O. (Olga), Healey, S. (Sue), McGuffog, L. (Lesley), Chenevix-Trench, G. (Georgia), Easton, D.F. (Douglas), Antoniou, A.C. (Antonis), Nathanson, K.L. (Katherine), Laitman, Y. (Yael), Kushnir, A. (Anya), Paluch-Shimon, S. (Shani), Berger, R. (Raanan), Zidan, J. (Jamal), Friedman, E. (Eitan), Ehrencrona, H. (Hans), Stenmark-Askmalm, M. (Marie), Einbeigi, Z. (Zakaria), Loman, N. (Niklas), Harbst, K. (Katja), Rantala, J. (Johanna), Melin, B. (Beatrice), Huo, D. (Dezheng), Olopade, O.I. (Olofunmilayo), Seldon, J.L. (Joyce), Ganz, P.A. (Patricia), Nussbaum, R.L. (Robert L.), Chan, S. (Salina), Odunsi, K. (Kunle), Gayther, S.A. (Simon), Domchek, S.M. (Susan), Arun, B.K. (Banu), Lu, K.H. (Karen), Mitchell, G. (Gillian), Karlan, B.Y. (Beth), Walsh, C.S. (Christine), Lester, K.J. (Kathryn), Godwin, A.K. (Andrew), Pathak, S.S., Ross, E.B. (Eric), Daly, M.J. (Mark), Whittemore, A.S. (Alice), John, E.M. (Esther), Miron, A. (Alexander), Terry, M.B. (Mary Beth), Chung, W.K. (Wendy K.), Goldgar, D. (David), Buys, S.S. (Saundra), Janavicius, R. (Ramunas), Tihomirova, L. (Laima), Tung, N. (Nadine), Dorfling, C.M. (Cecilia), Rensburg, E.J. (Elizabeth) van, Steele, L. (Linda), Neuhausen, S.L. (Susan), Ding, Y.C. (Yuan), Ejlertsen, B. (Bent), Gerdes, A-M. (Anne-Marie), Hansen, T.V.O. (Thomas), Ramon Y Cajal, T., Osorio, A. (Ana), Benítez, J. (Javier), Godino, J. (Javier), Tejada, M.I., Duran, M. (Mercedes), Weitzel, J.N. (Jeffrey), Bobolis, K.A. (Kristie A.), Sand, S.R. (Sharon), Fontaine, A. (Annette), Savarese, A. (Antonella), Pasini, B. (Barbara), Peissel, B. (Bernard), Bonnani, B. (Bernardo), Zaffaroni, D. (Daniela), Vignolo-Lutati, F. (Francesca), Scuvera, G. (Giulietta), Giannini, G. (Giuseppe), Bernard, L. (Loris), Genuardi, M. (Maurizio), Radice, P. (Paolo), Dolcetti, R. (Riccardo), Manoukian, S. (Siranoush), Pensotti, V. (Valeria), Gismondi, V. (Viviana), Yannoukakos, D. (Drakoulis), Fostira, F. (Florentia), Garber, J. (Judy), Torres, D. (Diana), Rashid, M.U. (Muhammad), Hamann, U. (Ute), Peock, S. (Susan), Frost, D. (Debra), Platte, R. (Radka), Evans, D.G. (Gareth), Eeles, R. (Rosalind), Davidson, R. (Rosemarie), Eccles, D. (Diana), Cole, T. (Trevor), Cook, J. (Jackie), Brewer, C. (Carole), Hodgson, S. (Shirley), Morrison, P.J. (Patrick), Walker, L.J. (Lisa), Porteous, M.E. (Mary), Kennedy, M.J. (John), Izatt, L. (Louise), Adlard, L., Donaldson, A. (Alan), Ellis, S.D. (Steve), Sharma, P. (Priyanka), Schmutzler, R.K. (Rita), Wapenschmidt, B. (Barbara), Becker, A. (Alexandra), Rhiem, K. (Kerstin), Hahnen, E. (Eric), Engel, C. (Christoph), Meindl, A. (Alfons), Engert, S. (Stefanie), Ditsch, N. (Nina), Arnold, N. (Norbert), Plendl, H. (Hansjoerg), Mundhenke, C. (Christoph), Niederacher, D. (Dieter), Fleisch, M.C. (Markus), Sutter, C. (Christian), Bartram, C.R. (Claus), Dikow, N. (Nicola), Wang-Gohrke, S. (Shan), Gadzicki, D. (Dorothea), Steinemann, D. (Doris), Kast, K. (Karin), Beer, M. (Marit), Varon-Mateeva, R. (Raymonda), Gehrig, P.A. (Paola A.), Weber, B.H.F. (Bernhard), Stoppa-Lyonnet, D. (Dominique), Belotti, M. (Muriel), Gauthier-Villars, M. (Marion), Damiola, F. (Francesca), Boutry-Kryza, N. (N.), Lasset, C. (Christine), Sobol, H. (Hagay), Peyrat, J.-P., Muller, D.W. (Danièle), Fricker, J.P. (Jean Pierre), Collonge-Rame, M.-A., Mortemousque, I. (Isabelle), Nogues, C. (Catherine), Rouleau, E. (Etienne), Isaacs, C. (Claudine), Paepe, A. (Anne) de, Poppe, B. (Bruce), Claes, K. (Kathleen), De Leeneer, K. (Kim), Piedmonte, M. (Marion), Rodriguez, G. (Gustavo), Wakely, K. (Katie), Boggess, J.F. (John), Blank, S.V. (Stephanie), Basil, J. (Jack), Azodi, M. (Masoud), Phillips, K.-A. (Kelly-Anne), Caldes, T. (Trinidad), Hoya, M. (Miguel) de La, Romero, A. (Atocha), Nevanlinna, H. (Heli), Aittomäki, K. (Kristiina), Hout, A.H. (Annemarie) van der, Hogervorst, F.B.L. (Frans), Verhoef, S., Collée, J.M. (Margriet), Seynaeve, C.M. (Caroline), Oosterwijk, J.C. (Jan), Gille, J.J. (Johan), Wijnen, J.T. (Juul), Gómez García, E.B. (Encarna), Kets, C.M. (Marleen), Ausems, M.G.E.M. (Margreet), Aalfs, C.M. (Cora), Devilee, P. (Peter), Mensenkamp, A.R. (Arjen), Kwong, A. (Ava), Olah, E., Papp, J. (Janos), Díez, O. (Orland), Lázaro, C. (Conxi), Darder, E. (Esther), Blanco, I. (Ignacio), Salinas, M., Jakubowska, A. (Anna), Lubinski, J. (Jan), Gronwald, J. (Jacek), Jaworska-Bieniek, K. (Katarzyna), Durda, K. (Katarzyna), Sukiennicki, G. (Grzegorz), Huzarski, T. (Tomasz), Byrski, T. (Tomasz), Cybulski, C. (Cezary), Toloczko-Grabarek, A. (Aleksandra), Złowocka-Perłowska, E. (Elzbieta), Menkiszak, J. (Janusz), Arason, A. (Adalgeir), Barkardottir, R.B. (Rosa), Simard, J. (Jacques), Laframboise, R. (Rachel), Montagna, M. (Marco), Agata, S. (Simona), Alducci, E. (Elisa), Peixoto, A. (Ana), Teixeira, P.J., Spurdle, A.B. (Amanda), Lee, M.H. (Min Hyuk), Park, S.K. (Sue), Kim, S.-W. (Sung-Won), Friebel, M.O.W. (Mark ), Couch, F.J. (Fergus), Lindor, N.M. (Noralane), Pankratz, V.S. (Shane), Guidugli, L. (Lucia), Wang, X. (Xianshu), Tischkowitz, M. (Marc), Foretova, L. (Lenka), Vijai, J. (Joseph), Offit, K. (Kenneth), Robson, M. (Mark), Rau-Murthy, R. (Rohini), Kauff, N. (Noah), Fink-Retter, A. (Anneliese), Singer, C.F. (Christian), Rappaport, C. (Christine), Gschwantler-Kaulich, D. (Daphne), Pfeiler, G. (Georg), Tea, M.-K., Berger, A. (Andreas), Greene, M.H. (Mark), Mai, P.L. (Phuong), Imyanitov, E.N. (Evgeny), Toland, A.E. (Amanda), Senter, L. (Leigha), Bojesen, A. (Anders), Pedersen, I.S. (Inge Sokilde), Skytte, A.-B. (Anne-Bine), Sunde, L. (Lone), Thomassen, M. (Mads), Moeller, S.T. (Sanne Traasdahl), Kruse, T.A. (Torben), Jensen, U.B., Caligo, M.A. (Maria), Aretini, P. (Paolo), Teo, S.-H. (Soo-Hwang), Selkirk, C.G. (Christina), Hulick, P.J. (Peter), and Andrulis, I.L. (Irene)

Abstract

Importance: Limited information about the relationship between specific mutations in BRCA1 or BRCA2 (BRCA1/2) and cancer risk exists. Objective: To identify mutation-specific cancer risks for carriers of BRCA1/2. Design, Setting, and Participants: Observational study ofwomen whowere ascertained between 1937 and 2011 (median, 1999) and found to carry disease-associated BRCA1 or BRCA2 mutations. The international sample comprised 19 581 carriers of BRCA1 mutations and 11 900 carriers of BRCA2 mutations from 55 centers in 33 countries on 6 continents.We estimated hazard ratios for breast and ovarian cancer based on mutation type, function, and nucleotide position.We also estimated RHR, the ratio of breast vs ovarian cancer hazard ratios. A value of RHR greater than 1 indicated elevated breast cancer risk; a value of RHR less than 1 indicated elevated ovarian cancer risk. Exposures: Mutations of BRCA1 or BRCA2. Main Outcomes and Measures: Breast and ovarian cancer risks. Results: Among BRCA1 mutation carriers, 9052 women (46%) were diagnosed with breast cancer, 2317 (12%) with ovarian cancer, 1041 (5%) with breast and ovarian cancer, and 7171 (37%) without cancer. Among BRCA2 mutation carriers, 6180 women (52%) were diagnosed with breast cancer, 682 (6%) with ovarian cancer, 272 (2%) with breast and ovarian cancer, and 4766 (40%) without cancer. In BRCA1, we identified 3 breast cancer cluster regions (BCCRs) located at c.179 to c.505 (BCCR1; RHR = 1.46; 95%CI, 1.22-1.74; P = 2 × 10-6), c.4328 to c.4945 (BCCR2; RHR = 1.34; 95%CI, 1.01-1.78; P = .04), and c. 5261 to c.5563 (BCCR2', RHR = 1.38; 95%CI, 1.22-1.55; P = 6 × 10-9).We also identified an ovarian cancer cluster region (OCCR) from c.1380 to c.4062 (approximately exon 11) with RHR = 0.62 (95%CI, 0.56-0.70; P = 9 × 10-17). In BRCA2, we observed multiple BCCRs spanning c.1 to c.596 (BCCR1; RHR = 1.71; 95%CI, 1.06-2.78; P = .03), c.772 to c.1806 (BCCR1'; RHR = 1.63; 95%CI, 1.10-2.40; P = .01), and c.7394 to

Published
2015
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13. A mutation in the FAM36A gene, the human ortholog of COX20, impairs cytochrome c oxidase assembly and is associated with ataxia and muscle hypotonia

Author

Szklarczyk, R.J., Wanschers, B.F.J., Nijtmans, L.G.J., Rodenburg, R.J.T., Zschocke, J., Dikow, N., Brand, M.A.M. van den, Hendriks-Franssen, M.G., Gilissen, C.F.H.A., Veltman, J.A., Nooteboom, M., Koopman, W.J.H., Willems, P.H.G.M., Smeitink, J.A.M., Huynen, M.A., Heuvel, L.P.W.J. van den, Szklarczyk, R.J., Wanschers, B.F.J., Nijtmans, L.G.J., Rodenburg, R.J.T., Zschocke, J., Dikow, N., Brand, M.A.M. van den, Hendriks-Franssen, M.G., Gilissen, C.F.H.A., Veltman, J.A., Nooteboom, M., Koopman, W.J.H., Willems, P.H.G.M., Smeitink, J.A.M., Huynen, M.A., and Heuvel, L.P.W.J. van den

Abstract

Item does not contain fulltext, The mitochondrial respiratory chain complex IV (cytochrome c oxidase) is a multi-subunit enzyme that transfers electrons from cytochrome c to molecular oxygen, yielding water. Its biogenesis requires concerted expression of mitochondria- and nuclear-encoded subunits and assembly factors. In this report, we describe a homozygous missense mutation in FAM36A from a patient who displays ataxia and muscle hypotonia. The FAM36A gene is a remote, putative ortholog of the fungal complex IV assembly factor COX20. Messenger RNA (mRNA) and protein co-expression analyses support the involvement of FAM36A in complex IV function in mammals. The c.154A>C mutation in the FAM36A gene, a mutation that is absent in sequenced exomes, leads to a reduced activity and lower levels of complex IV and its protein subunits. The FAM36A protein is nearly absent in patient's fibroblasts. Cells affected by the mutation accumulate subassemblies of complex IV that contain COX1 but are almost devoid of COX2 protein. We observe co-purification of FAM36A and COX2 proteins, supporting that the FAM36A defect hampers the early step of complex IV assembly at the incorporation of the COX2 subunit. Lentiviral complementation of patient's fibroblasts with wild-type FAM36A increases the complex IV activity as well as the amount of holocomplex IV and of individual subunits. These results establish the function of the human gene FAM36A/COX20 in complex IV assembly and support a causal role of the gene in complex IV deficiency.

Published
2013

14. A mutation in the FAM36A gene, the human ortholog of COX20, impairs cytochrome c oxidase assembly and is associated with ataxia and muscle hypotonia

Author

Szklarczyk, R.J., Wanschers, B.F.J., Nijtmans, L.G.J., Rodenburg, R.J.T., Zschocke, J., Dikow, N., Brand, M.A.M. van den, Hendriks-Franssen, M.G., Gilissen, C.F.H.A., Veltman, J.A., Nooteboom, M., Koopman, W.J.H., Willems, P.H.G.M., Smeitink, J.A.M., Huynen, M.A., Heuvel, L.P.W.J. van den, Szklarczyk, R.J., Wanschers, B.F.J., Nijtmans, L.G.J., Rodenburg, R.J.T., Zschocke, J., Dikow, N., Brand, M.A.M. van den, Hendriks-Franssen, M.G., Gilissen, C.F.H.A., Veltman, J.A., Nooteboom, M., Koopman, W.J.H., Willems, P.H.G.M., Smeitink, J.A.M., Huynen, M.A., and Heuvel, L.P.W.J. van den

Abstract

Item does not contain fulltext, The mitochondrial respiratory chain complex IV (cytochrome c oxidase) is a multi-subunit enzyme that transfers electrons from cytochrome c to molecular oxygen, yielding water. Its biogenesis requires concerted expression of mitochondria- and nuclear-encoded subunits and assembly factors. In this report, we describe a homozygous missense mutation in FAM36A from a patient who displays ataxia and muscle hypotonia. The FAM36A gene is a remote, putative ortholog of the fungal complex IV assembly factor COX20. Messenger RNA (mRNA) and protein co-expression analyses support the involvement of FAM36A in complex IV function in mammals. The c.154A>C mutation in the FAM36A gene, a mutation that is absent in sequenced exomes, leads to a reduced activity and lower levels of complex IV and its protein subunits. The FAM36A protein is nearly absent in patient's fibroblasts. Cells affected by the mutation accumulate subassemblies of complex IV that contain COX1 but are almost devoid of COX2 protein. We observe co-purification of FAM36A and COX2 proteins, supporting that the FAM36A defect hampers the early step of complex IV assembly at the incorporation of the COX2 subunit. Lentiviral complementation of patient's fibroblasts with wild-type FAM36A increases the complex IV activity as well as the amount of holocomplex IV and of individual subunits. These results establish the function of the human gene FAM36A/COX20 in complex IV assembly and support a causal role of the gene in complex IV deficiency.

Published
2013

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