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Your search keyword '"Ducker, Samantha"' showing total 15 results
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15 results on '"Ducker, Samantha"'

1. Pretreatment prediction of response to ursodeoxycholic acid in primary biliary cholangitis: development and validation of the UDCA Response Score

Author

Thomas, Caradog, Rahman, Meshbah, Yapp, Tom, Lye Ch'ng, Chin, Harrison, Melanie, Sturgess, Richard, Galaska, Roman, Healey, Chris, Whiteman, Jessica, Czaijkowski, Marek, Gray, Catherine, Gunasekera, Anton, Gyawli, Pranab, Premchand, Purushothaman, Mann, Steven, Elliott, Keith, Kapur, Kapil, Watson, Alan, Foster, Graham, Trembling, Paul, Subhani, Javaid, Harvey, Rory, McCorry, Roger, Adgey, Carolyn, Hobson, Lucie, Mulvaney-Jones, Caroline, Evans, Richard, Mathialahan, Thiriloganathan, Ramanaden, David, Gasem, Jaber, Van Duyvenvoorde, Greta, Shorrock, Christopher, Seward, Katie, Southern, Paul, Tibble, Jeremy, Penn, Ruth, Gorard, David, Maiden, Jane, Damant, Rose, Palegwala, Altaf, Jones, Susan, Alexander, Graeme, Mells, George, Sandford, Richard, Dolwani, Sunil, Prince, Martin, Silvestre, Valeria, Foxton, Matthew, Dungca, Eleanor, Mitchison, Harriet, Wheatley, Natalie, Gooding, Ian, Doyle, Helen, Karmo, Mazn, Kent, Melanie, Saksena, Sushma, Braim, Delyth, Patel, Minesh, Lord, Susan, Ede, Roland, Paton, Alison, Austin, Andrew, Lancaster, Nicola, Sayer, Joanna, Gibbins, Andrew, Hogben, Karen, Hovell, Chris, Fisher, Neil, Carter, Martyn, Koss, Konrad, Musselwhite, Janine, Muscariu, Florin, Piotreowicz, Andrzej, McKay, Alexandra, Grimley, Charles, Neal, David, Ting Tan, Lai, Lim, Guan, Brighton, Jacqueline, Foale, Carole, Ala, Aftab, Saeed, Athar, Flahive, Kerry, Wood, Gordon, Townshend, Paula, Ford, Chris, Brown, Jonathan, Kordula, Jean, Bowles, Jane, Wilkinson, Mark, Palmer, Caroline, Ramage, John, Gordon, Harriet, Featherstone, James, Ridpath, Jo, Ngatchu, Theodore, Levi, Sass, Shaukat, Syed, Sadeghian, Joy, Shidrawi, Ray, Williams, Bronwen, Abouda, George, Jones, Sarah, Duggan, Claire, Hynes, Abigail, Narain, Mark, Rees, Ian, Salam, Imroz, Crossey, Mary, Taylor-Robinson, Simon, Brown, Ashley, MacNicol, Carolyn, Williams, Simon, Wilhelmsen, Elva, Banim, Paul, Raymode, Parizade, Chilton, Andrew, Das, Debasish, Lee, Hye-Jeong, Curtis, Howard, Heneghan, Michael, Gess, Markus, Durant, Emma, Drake, IM, Bishop, Rebecca, Davies, Mervyn, Jones, Rebecca, Aldersley, Mark, Ncube, Noma, McNair, Alistair, Srirajaskanthan, Raj, Sen, Sambit, Casey, Rebecca, Bird, George, Mendall, Mike, Cowley, Caroline, Barnardo, Adrian, Kitchen, Paul, Yoong, Kevin, Amore, Kelly, Sirdefield, Dawn, Orpe, Jacky, Mathew, Ray, MacFaul, George, Wrigth, Aruna, Shah, Amir, Evans, Chris, Keggans, Janie, Bird, Bridget, Baxter, Gwen, Saha, Subrata, Pollock, Katharine, Hughes, Maggie, Bramley, Peter, Grieve, Emma, Young, Karin, Fraser, Andrew, Mukhopadhya, Ashis, Ocker, Kate, Mills, Peter, Hines, Francis, Shallcross, Chris, Wilkins, Joy, Grellier, Leonie, Campbell, Stewart, Martin, Kirsty, Bathgate, Andrew, Innes, Caron, Shepherd, Alan, Rushbrook, Simon, Valliani, Talal, Przemioslo, Robert, Fairlamb, Helen, Macdonald, Chris, Eastick, Anne, Metcalf, Jane, Tanqueray, Elizabeth, Shmueli, Udi, Holbrook, Becky, Davis, Andrew, Browning, Julie, Naqvi, Asifabbas, Walker, Kirsten, Lee, Tom, Verheyden, Juliette, Slininger, Susan, Ryder, Stephen D, Chapman, Roger, Collier, Jane, O'Donnell, Denise, Stafford, Lizzie, Williamson, Kate, Kent, Linda, Klass, Howard, Ninkovic, Mary, March, Linda, Cramp, Matthew, Simpson, Diane, Dickson, Christine, Sharer, Nicholas, Hayes, Maria, Goggin, Patrick, Quinne, Mary, Pearson, Sallyanne, Hoeroldt, Barbara, Jones, Linda, Wright, Alice, Booth, Jonathan, Loftus, Alison, Lipscomb, George, Dewhurst, Hannah, Gunter, Emma, Williams, Earl, Fouracres, Anna, Farrington, Liz, Graves, Lyn, Hussaini, Hyder, Stableforth, Bill, Marriott, Suzie, Ayres, Reuben, Leoni, Marina, Burroughs, Andrew, Marshall, Eileen, Thorburn, Douglas, Tyrer, David, Martin, Kate, Lombard, Martin, Patanwala, Imran, Dali-Kemmery, Lola, Lambourne, Victoria, Maltby, Julia, Vyas, Samir, Colley, Julie, Shinder, Bal, Singhal, Saket, Jones, Jayne, Mills, Marisa, Gleeson, Dermot, Carnahan, Mandy, Butterworth, Jeff, Boulton, Kerenza, Taylor, Natalie, George, Keith, Harding, Tim, Tregonning, Julie, Douglass, Andrew, Brown, Carly, Clifford, Gayle, Panter, Simon, Gocher, Denise, Shearman, Jeremy, Bray, Gary, Hamilton, Maria, Butcher, Graham, Forton, Daniel, Mclindon, John, Curtis, Janette, Das, Debashis, Shewan, Tracey, Cowan, Matthew, Whatley, Gregory, Nasseri, Mariam, Grover, Bob, Sivaramakrishnan, Nurani, Ducker, Samantha, Houghton, Kathryn, Jones, David, Griffiths, Laura, Tripoli, Sherill, Pitcher, Maxton, Shpuza, Ervin, White, Nikki, Ghosh, Deb, Douds, Andrew, Green, Marie, Brookes, Matthew, Cumlat, Lourdes, Wong, Voi Shim, Warner, Karen, Netherton, Kimberley, Mandal, Adtya, Jain, Snjiv, Gupta, Hemant, Sanghi, Pradeep, Pereira, Steve, Neuberger, James, Gunson, Bridget, Hirschfield, Gideon, Lim, Reina Teegan, Gallagher, Susan, Clement, Darren, Brind, Alison, Watts, Gill, Mupudzi, Mcdonald, Wright, Mark, Gitahi, Jane, Gordon, Fiona, Gocher, Denis, Unitt, Esther, Pateman, Hilary, Batham, Sally, Delahooke, Toby, Grant, Allister, Conder, Jill, Higham, Andrew, Cox, Mark, O'Donohoe, Lynn, Currie, Lynn, King, Alistair, Oblak, Metod, Collins, Carole, Whalley, Simon, Quinn, Marie, Baird, Yolanda, Amey, Isobel, Fraser, Jocelyn, Li, Andy, Cotterill, Donna, Bell, Andrew, Singhal, Amit, Gee, Ian, Greer, Sandra, Ang, Yeng, Ransford, Rupert, Allison, Joanna, Gotto, James, Dyer, Simon, Sweeting, Helen, Millson, Charles, Invernizzi, Pietro, Carbone, Marco, Cristoferi, Laura, Bonato, Giulia, Malinverno, Federica, Bernuzzi, Francesca, Alvaro, Domenico, Labbadia, Giancarlo, Bragazzi, Maria Consiglia, Andreone, Pietro, Muratori, Luigi, Azzaroli, Francesco, Floreani, Annarosa, Galli, Andrea, Tarocchi, Mirko, Giannini, Edoardo, Miele, Luca, Gasbarrini, Antonio, Grieco, Antonio, Marrone, Giuseppe, Donato, Maria Francesca, Valenti, Luca, Marra, Fabio, Marzioni, Marco, Maroni, Luca, Rigamonti, Cristina, Zuin, Massimo, Battezzati, Pier Maria, Picciotto, Antonino, Nardi, Alessandra, Flack, Steve, Carpino, Guido, Varvaropoulou, Nikoletta, Gavrila, Caius, Spicer, Ann, Badrock, Jonathan, Cardinale, Vincenzo, Ainsworth, Holly F, Heneghan, Michael A, Neuberger, James M, Donato, Maria F, Kirby, John, Mitchell-Thain, Robert, Sampaziotis, Fotios, Gaudio, Eugenio, Ronca, Vincenzo, Gerussi, Alessio, Stocken, Deborah D, Cordell, Heather J, Hirschfield, Gideon M, Alexander, Graeme J, Sandford, Richard N, Jones, David E, and Mells, George F

Published
2018
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8. Dense fine-mapping study identifies novel disease loci and implicates coding and non-coding variation in primary biliary cirrhosis risk: 2021

Author

Liu, Jimmy Z., Marri, Mohamed Al, Gaffney, Daniel, Mells, George F., Jostins, Luke, Cordell, Heather J., Ducker, Samantha J., Day, Darren, Heneghan, Michael A., Neuberger, James, Donaldson, Peter T., Bathgate, Andrew, Burroughs, Andrew K., Davies, Mervyn H., Jones, David E., Alexander, Graeme J., Barrett, Jeffrey C., Sandford, Richard N., and Anderson, Carl A.

Published
2012

12. Dense fine-mapping study identifies new susceptibility loci for primary biliary cirrhosis.

Author

Liu, Jimmy Z, Almarri, Mohamed A, Gaffney, Daniel J, Mells, George F, Jostins, Luke, Cordell, Heather J, Ducker, Samantha J, Day, Darren B, Heneghan, Michael A, Neuberger, James M, Donaldson, Peter T, Bathgate, Andrew J, Burroughs, Andrew, Davies, Mervyn H, Jones, David E, Alexander, Graeme J, Barrett, Jeffrey C, Sandford, Richard N, and Anderson, Carl A

Subjects
GENE mapping, LOCUS (Genetics), CIRRHOSIS of the liver, AUTOIMMUNE diseases, DISEASE susceptibility, CYTOKINES, DISEASE risk factors
Abstract

We genotyped 2,861 cases of primary biliary cirrhosis (PBC) from the UK PBC Consortium and 8,514 UK population controls across 196,524 variants within 186 known autoimmune risk loci. We identified 3 loci newly associated with PBC (at P < 5 × 10?8), increasing the number of known susceptibility loci to 25. The most associated variant at 19p12 is a low-frequency nonsynonymous SNP in TYK2, further implicating JAK-STAT and cytokine signaling in disease pathogenesis. An additional five loci contained nonsynonymous variants in high linkage disequilibrium (LD; r2 > 0.8) with the most associated variant at the locus. We found multiple independent common, low-frequency and rare variant association signals at five loci. Of the 26 independent non-human leukocyte antigen (HLA) signals tagged on the Immunochip, 15 have SNPs in B-lymphoblastoid open chromatin regions in high LD (r2 > 0.8) with the most associated variant. This study shows how data from dense fine-mapping arrays coupled with functional genomic data can be used to identify candidate causal variants for functional follow-up. [ABSTRACT FROM AUTHOR]

Published
2012
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13. Genome-wide association study identifies 12 new susceptibility loci for primary biliary cirrhosis.

Author

Mells, George F., Floyd, James A. B., Morley, Katherine I., Cordell, Heather J., Franklin, Christopher S., So-Youn Shin, Heneghan, Michael A., Neuberger, James M., Donaldson, Peter T., Day, Darren B., Ducker, Samantha J., Muriithi, Agnes W., Wheater, Elizabeth F., Hammond, Christopher J., Dawwas, Muhammad F., Jones, David E., Peltonen, Leena, Alexander, Graeme J., Sandford, Richard N., and Anderson, Carl A.

Subjects
CIRRHOSIS of the liver, LOCUS (Genetics), COHORT analysis, META-analysis, PATIENTS
Abstract

In addition to the HLA locus, six genetic risk factors for primary biliary cirrhosis (PBC) have been identified in recent genome-wide association studies (GWAS). To identify additional loci, we carried out a GWAS using 1,840 cases from the UK PBC Consortium and 5,163 UK population controls as part of the Wellcome Trust Case Control Consortium 3 (WTCCC3). We followed up 28 loci in an additional UK cohort of 620 PBC cases and 2,514 population controls. We identified 12 new susceptibility loci (at a genome-wide significance level of P < 5 × 10?8) and replicated all previously associated loci. We identified three further new loci in a meta-analysis of data from our study and previously published GWAS results. New candidate genes include STAT4, DENND1B, CD80, IL7R, CXCR5, TNFRSF1A, CLEC16A and NFKB1. This study has considerably expanded our knowledge of the genetic architecture of PBC. [ABSTRACT FROM AUTHOR]

Published
2011
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14. Sex and Age Are Determinants of the Clinical Phenotype of Primary Biliary Cirrhosis and Response to Ursodeoxycholic Acid.

Author

Carbone, Marco, Mells, George F., Pells, Greta, Dawwas, Muhammad F., Newton, Julia L., Heneghan, Michael A., Neuberger, James M., Day, Darren B., Ducker, Samantha J., Sandford, Richard N., Alexander, Graeme J., and Jones, David E.J.

Subjects
CIRRHOSIS of the liver, AGE factors in disease, SEX factors in disease, URSODEOXYCHOLIC acid, BILE duct diseases, PHENOTYPES, COHORT analysis, DYSAUTONOMIA
Abstract

Background, & Aims: Studies of primary biliary cirrhosis (PBC) phenotypes largely have been performed using small and selected populations. Study size has precluded investigation of important disease subgroups, such as men and young patients. We used a national patient cohort to obtain a better picture of PBC phenotypes. Methods: We performed a cross-sectional study using the United Kingdom-PBC, patient cohort. Comprehensive data were collected for 2353 patients on diagnosis reports, response to therapy with ursodeoxycholic acid (UDCA), laboratory results, and symptom impact (assessed using the PBC-40 and other related measures). Results: Seventy-nine percent of the patients reported current UDCA, therapy, with 80% meeting Paris response criteria. Men were significantly less likely to have responded to UDCA than women (72% vs 80% response rate; P < .05); male sex was an independent predictor of nonresponse on multivariate analysis. Age at diagnosis was associated strongly and independently with response to UDCA; response rates ranged from 90% among patients who presented with PBC when they were older than age 70, to less than 50% for those younger than age 30 (P < .0001). Patients who presented at younger ages also were significantly more likely not to respond to UDCA therapy, based on alanine aminotransferase and aspartate aminotransferase response criteria, and more likely to report fatigue and pruritus. Women had mean fatigue scores 32% higher than men''s (P < .0001). The increase in fatigue severity in women was related strongly (r = 0.58; P < .0001) to higher levels of autonomic symptoms (P < .0001). Conclusions: Among patients with PBC, response to UDCA, treatment and symptoms are related to sex and age at presentation, with the lowest response rates and highest levels of symptoms in women presenting at younger than age 50. Increased severity of fatigue in women is related to increased autonomic symptoms, making dysautonomia a plausible therapeutic target. [Copyright &y& Elsevier]

Published
2013
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15. The impact of liver transplantation on the phenotype of primary biliary cirrhosis patients in the UK-PBC cohort.

Author

Pells, Greta, Mells, George F., Carbone, Marco, Newton, Julia L., Bathgate, Andrew J., Burroughs, Andrew K., Heneghan, Michael A., Neuberger, James M., Day, Darren B., Ducker, Samantha J., Sandford, Richard N., Alexander, Graeme J., and Jones, David E.J.

Subjects
*LIVER transplantation, *PHENOTYPES, *CIRRHOSIS of the liver, *FATIGUE (Physiology), *SYMPTOMS, *CROSS-sectional method
Abstract

Background & Aims: Liver transplantation improves survival in end-stage primary biliary cirrhosis (PBC), but the benefit for systemic symptoms including fatigue is less clear. The aim of this study was to utilise the comprehensive UK-PBC Research Cohort, including 380 post-transplant patients and 2300 non-transplanted patients, to answer key questions regarding transplantation for PBC. Methods: Cross-sectional study of post-transplant PBC patients and case-matched non-transplanted patients. Detailed clinical information was collected, together with patient systemic symptom impact data using validated assessment tools. Results: Over 25% of patients in the transplant cohort were grafted within 2years of PBC diagnosis suggesting advanced disease at presentation. Transplanted patients were significantly younger at presentation than non-transplanted (mean 7years) and >35% of all patients in the UK-PBC cohort who presented under 50years had already undergone liver transplantation at the study censor point (>50% were treatment failures (post-transplant or unresponsive to UDCA)). Systemic symptom severity (fatigue and cognitive symptoms) was identical in female post-transplant patients and matched non-transplanted controls and unrelated to disease recurrence or immunosuppression type. In males, symptoms were worse in transplanted than in non-transplanted patients. Conclusions: Age at presentation is a major risk factor for progression to transplant (as well as UDCA non-response) in PBC. Although both confirmatory longitudinal studies, and studies utilising objective as well as subjective measures of function, are needed if we are to address the question definitively, we found no evidence of improved systemic symptoms after liver transplantation in PBC and patients should be advised accordingly. Consideration needs to be given to enhancing rehabilitation approaches to improve function and life quality after liver transplant for PBC. [Copyright &y& Elsevier]

Published
2013
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