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1. 89 Two Newly Developed Frontiers CTSI Applications to Support Recruitment and Trial Management: The Frontiers Trial Finder Mobile App and a Predictive Accrual Web-based App

Author

Hanluen Kuo, Vinay Murakonda, Hunter Hines, Dinesh Pal Mudaranthakam, Paula Monaghan-Nichols, Eric Rush, and Jeffrey Statland

Subjects
Medicine
Abstract

OBJECTIVES/GOALS: Frontiers CTSI developed applications to ensure its science teams have technological tools to advance their community engagement and trial management. The Trial Finder app is a mobile application that allows users to navigate available trials. The Accrual app will help study teams monitor their recruitment performances in real time. METHODS/STUDY POPULATION: The Data Science team at the University of Kansas Medical Center (KUMC) had previously developed similar applications for The University of Kansas Cancer Center. Both retrieve information from KUMC’s clinical trial management system and ClinicalTrials.gov. This was replicated to include KUMC Pulmonary Critical Care (PCC) and KUMC Neuromuscular (NM) trials. Frontiers CTSI is working with both groups for piloting and feedback. Recruiting and marketing strategies for investigators to add their trials to both apps will be done through existing communication channels and be highlighted on Frontiers trial resource website. Recruiting and marketing strategies of the Frontiers Trial Finder app to the external community will have a focus on, but not limited to, paid social media advertising. RESULTS/ANTICIPATED RESULTS: The Trial Finder app can help providers search for trials their patient may be eligible for during clinic visits and to engage with the community by allowing anyone to download and browse on their Android/iOS device. Built in REDCap forms are used to capture contact information. The Accrual app is a web-based application that helps study teams monitor their recruitment performances in real time and provide an opportunity to adjust strategies. It uses an in-house algorithm to predict if trials will meet timeline goals. This data is conveniently laid out on a single web page so that science teams can overview all their trials’ recruitment performances simultaneously. The next phase of developing these applications is to market their use within Frontiers CTSI and its community catchment area. DISCUSSION/SIGNIFICANCE: Through collaboration, Frontiers CTSI is developing resources to support community engagement and trial management. New innovative applications like these ensure all the main stakeholders involved with clinical trial execution are always engaged and have access to iterative contemporary technologies that support their research.

Published
2024
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2. P398: A rare report of a child with mosaic trisomy 4

Author

Lauren Bartik, Elena Repnikova, Eric Rush, Jennifer Roberts, Erin Baldwin, John Carey, Lorenzo Botto, John O'Shea, Ting Wen, Pinar Bayrak-Toydemir, Rong Mao, Undiagnosed Diseases Network, and Bonnie Sullivan

Subjects
Genetics, QH426-470, Medicine
Published
2024
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6. P571: Expanding the genetic and phenotypic spectrum of cohesinopathies in a single center

Author

Isabelle Thiffault, Joseph Alaimo, Vitoria Paolillo, Florencia Del Viso, Ana Cohen, Emily Farrow, Susan Starling, Maggie Humphrey, Caitlin Schwager, Lauren Bartik, Kendra Engleman, Laura Cross, Holly Welsh, Eric Rush, Shivarajan Amudhavalli, Bonnie Sullivan, Dihong Zhou, Elizabeth Shaffer, Waseem Baig, Lee Zellmer, Mary Rindler, Tricia Zion, Emelia Boillat, Tomi Pastinen, and Carol Saunders

Subjects
Genetics, QH426-470, Medicine
Published
2023
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9. OR13-3 Hypophosphatemia Gene Panel Sponsored Program: A High Yield of Molecular Diagnoses from Clinically Confirmed XLH and Suspected Genetic Hypophosphatemia

Author

Omid K Japalaghi, Heather McLaughlin, Nicole Miller, Prameela Ramesan, Eric Rush, Jillian Yong, and Kathryn Dahir

Subjects
Endocrinology, Diabetes and Metabolism
Abstract

Introduction X-linked hypophosphatemia (XLH), a dominant disorder caused by disease-associated variants in the PHEX gene, affects males and females of all ages. Rickets and osteomalacia may be present along with short stature, lower limb deformity, muscle pain and/or weakness/fatigue, bone pain, fractures and poor fracture healing, joint pain/stiffness, hearing difficulty, enthesopathy, osteoarthritis, and dental abscesses. Patients with XLH have below-normal serum phosphate and elevated serum FGF23. The Hypophosphatemia Gene Panel Sponsored Program provides a no-charge genetic test to patients to confirm a clinical XLH diagnosis or to aid in the diagnosis of suspected genetic hypophosphatemia. Methods Individuals aged ≥6 months with either a clinical XLH diagnosis or suspicion of genetic hypophosphatemia, as evidenced by 2 or more clinical signs/ symptoms, were eligible for testing. The next generation sequencing panel includes 17 genes: ALPL, CLCN5, CTNS, ​​​​CYP2R1, CYP27B1, DMP1, ENPP1, FAH, FAM20C, FGF23, FGFR1, GNAS, OCRL, PHEX, SLC34A1, SLC34A3, and VDR. Copy number variant (CNV) detection was also performed. Variants were interpreted according to the joint consensus from the American College of Medical Genetics and Genomics and the Association for Molecular Pathology using Invitae's proprietary point-based scoring system, Sherloc. In all analyses, data were summarized using descriptive statistics. Results One thousand six hundred sixty-eight unrelated individuals, ages 6 months to 87 years (mean = 27.4±21.2 years, median = 22.5 years), were tested between 27 February 2019 and 23 October 2021. The majority of individuals were female (66.6%) and of self-reported White ancestry (54.9%). Eight hundred seventy-nine (52.7.%) unrelated individuals had a PHEX variant: 825 (93.9%) were either pathogenic or likely pathogenic (P/LP) and 54 (6.1%) were variants of uncertain significance (VUS). Of the 789 (47.3%) cases where no PHEX P/LP or VUS was found, 116 (14.7%) had molecular diagnoses associated with other genes/disorders: ALPL (71 with 1 variant, 12 with 2 variants), FGF23 (8), CYP27B1 (14), SLC34A3 (5), and two or fewer molecular diagnoses for DMP, CTNS, ENPP1, and OCRL. Four hundred and twenty-eight unique P/LP PHEX variants were detected: 136 deletions, duplications or insertions ​(100 bp); 74 splice-site variants; 177 single nucleotide variants. Additional family member testing/clinical information/observation of variants resulted in 25 VUS being reclassified to P/LP (impacting 50 individuals), highlighting the value of cascade family testing/clinical information to resolve VUS. Notably, the frequency of PHEX VUS has decreased from 8.9% in 2019 (41 weeks) to 4.4% in 2021 (44 weeks). Conclusions The frequency of any PHEX variant classified as VUS has decreased more than two-fold since 2019. RNA analyses to resolve VUS may further improve molecular diagnostic yield. Program results provide a high molecular diagnostic yield for XLH and other genetic hypophosphatemia disorders and new insight into XLH-associated PHEX variants. Presentation: Sunday, June 12, 2022 11:30 a.m. - 11:45 a.m.

Published
2022

11. Phenotypic expansion of CACNA1C-associated disorders to include isolated neurological manifestations

Author

Lance H. Rodan, Rebecca C. Spillmann, Harley T. Kurata, Shawn M. Lamothe, Jasmine Maghera, Rami Abou Jamra, Anna Alkelai, Stylianos E. Antonarakis, Isis Atallah, Omer Bar-Yosef, Frédéric Bilan, Kathrine Bjorgo, Xavier Blanc, Patrick Van Bogaert, Yoav Bolkier, Lindsay C. Burrage, Björn U. Christ, Jorge L. Granadillo, Patricia Dickson, Kirsten A. Donald, Christèle Dubourg, Aviva Eliyahu, Lisa Emrick, Kendra Engleman, Michaela Veronika Gonfiantini, Jean-Marc Good, Judith Kalser, Chiara Kloeckner, Guus Lachmeijer, Marina Macchiaiolo, Francesco Nicita, Sylvie Odent, Emily O’Heir, Xilma Ortiz-Gonzalez, Marta Pacio-Miguez, María Palomares-Bralo, Loren Pena, Konrad Platzer, Mathieu Quinodoz, Emmanuelle Ranza, Jill A. Rosenfeld, Eliane Roulet-Perez, Avni Santani, Fernando Santos-Simarro, Ben Pode-Shakked, Cara Skraban, Rachel Slaugh, Andrea Superti-Furga, Isabelle Thiffault, Richard H. van Jaabrsveld, Marie Vincent, Hong-Gang Wang, Pia Zacher, Mercedes E. Alejandro, Mahshid S. Azamian, Carlos A. Bacino, Ashok Balasubramanyam, Hsiao-Tuan Chao, Gary D. Clark, William J. Craigen, Hongzheng Dai, Shweta U. Dhar, Lisa T. Emrick, Alica M. Goldman, Neil A. Hanchard, Fariha Jamal, Lefkothea Karaviti, Seema R. Lalani, Brendan H. Lee, Richard A. Lewis, Ronit Marom, Paolo M. Moretti, David R. Murdock, Sarah K. Nicholas, James P. Orengo, Jennifer E. Posey, Lorraine Potocki, Susan L. Samson, Daryl A. Scott, Alyssa A. Tran, Tiphanie P. Vogel, Michael F. Wangler, Shinya Yamamoto, Christine M. Eng, Pengfei Liu, Patricia A. Ward, Edward Behrens, Matthew Deardorff, Marni Falk, Kelly Hassey, Kathleen Sullivan, Adeline Vanderver, David B. Goldstein, Heidi Cope, Allyn McConkie-Rosell, Kelly Schoch, Vandana Shashi, Edward C. Smith, Jennifer A. Sullivan, Queenie K.-G. Tan, Nicole M. Walley, Pankaj B. Agrawal, Alan H. Beggs, Gerard T. Berry, Lauren C. Briere, Laurel A. Cobban, Matthew Coggins, Cynthia M. Cooper, Elizabeth L. Fieg, Frances High, Ingrid A. Holm, Susan Korrick, Joel B. Krier, Sharyn A. Lincoln, Joseph Loscalzo, Richard L. Maas, Calum A. MacRae, J. Carl Pallais, Deepak A. Rao, Edwin K. Silverman, Joan M. Stoler, David A. Sweetser, Melissa Walker, Chris A. Walsh, Cecilia Esteves, Emily G. Kelley, Isaac S. Kohane, Kimberly LeBlanc, Alexa T. McCray, Anna Nagy, Surendra Dasari, Brendan C. Lanpher, Ian R. Lanza, Eva Morava, Devin Oglesbee, Guney Bademci, Deborah Barbouth, Stephanie Bivona, Olveen Carrasquillo, Ta Chen Peter Chang, Irman Forghani, Alana Grajewski, Rosario Isasi, Byron Lam, Roy Levitt, Xue Zhong Liu, Jacob McCauley, Ralph Sacco, Mario Saporta, Judy Schaechter, Mustafa Tekin, Fred Telischi, Willa Thorson, Stephan Zuchner, Heather A. Colley, Jyoti G. Dayal, David J. Eckstein, Laurie C. Findley, Donna M. Krasnewich, Laura A. Mamounas, Teri A. Manolio, John J. Mulvihill, Grace L. LaMoure, Madison P. Goldrich, Tiina K. Urv, Argenia L. Doss, Maria T. Acosta, Carsten Bonnenmann, Precilla D’Souza, David D. Draper, Carlos Ferreira, Rena A. Godfrey, Catherine A. Groden, Ellen F. Macnamara, Valerie V. Maduro, Thomas C. Markello, Avi Nath, Donna Novacic, Barbara N. Pusey, Camilo Toro, Colleen E. Wahl, Eva Baker, Elizabeth A. Burke, David R. Adams, William A. Gahl, May Christine V. Malicdan, Cynthia J. Tifft, Lynne A. Wolfe, John Yang, Bradley Power, Bernadette Gochuico, Laryssa Huryn, Lea Latham, Joie Davis, Deborah Mosbrook-Davis, Francis Rossignol, null Ben Solomon, John MacDowall, Audrey Thurm, Wadih Zein, Muhammad Yousef, Margaret Adam, Laura Amendola, Michael Bamshad, Anita Beck, Jimmy Bennett, Beverly Berg-Rood, Elizabeth Blue, Brenna Boyd, Peter Byers, Sirisak Chanprasert, Michael Cunningham, Katrina Dipple, Daniel Doherty, Dawn Earl, Ian Glass, Katie Golden-Grant, Sihoun Hahn, Anne Hing, Fuki M. Hisama, Martha Horike-Pyne, Gail P. Jarvik, Jeffrey Jarvik, Suman Jayadev, Christina Lam, Kenneth Maravilla, Heather Mefford, J. Lawrence Merritt, Ghayda Mirzaa, Deborah Nickerson, Wendy Raskind, Natalie Rosenwasser, C. Ron Scott, Angela Sun, Virginia Sybert, Stephanie Wallace, Mark Wener, Tara Wenger, Euan A. Ashley, Gill Bejerano, Jonathan A. Bernstein, Devon Bonner, Terra R. Coakley, Liliana Fernandez, Paul G. Fisher, Laure Fresard, Jason Hom, Yong Huang, Jennefer N. Kohler, Elijah Kravets, Marta M. Majcherska, Beth A. Martin, Shruti Marwaha, Colleen E. McCormack, Archana N. Raja, Chloe M. Reuter, Maura Ruzhnikov, Jacinda B. Sampson, Kevin S. Smith, Shirley Sutton, Holly K. Tabor, Brianna M. Tucker, Matthew T. Wheeler, Diane B. Zastrow, Chunli Zhao, William E. Byrd, Andrew B. Crouse, Matthew Might, Mariko Nakano-Okuno, Jordan Whitlock, Gabrielle Brown, Manish J. Butte, Esteban C. Dell’Angelica, Naghmeh Dorrani, Emilie D. Douine, Brent L. Fogel, Irma Gutierrez, Alden Huang, Deborah Krakow, Hane Lee, Sandra K. Loo, Bryan C. Mak, Martin G. Martin, Julian A. Martínez-Agosto, Elisabeth McGee, Stanley F. Nelson, Shirley Nieves-Rodriguez, Christina G.S. Palmer, Jeanette C. Papp, Neil H. Parker, Genecee Renteria, Rebecca H. Signer, Janet S. Sinsheimer, Jijun Wan, Lee-kai Wang, Katherine Wesseling Perry, Jeremy D. Woods, Justin Alvey, Ashley Andrews, Jim Bale, John Bohnsack, Lorenzo Botto, John Carey, Laura Pace, Nicola Longo, Gabor Marth, Paolo Moretti, Aaron Quinlan, Matt Velinder, Dave Viskochil, Pinar Bayrak-Toydemir, Rong Mao, Monte Westerfield, Anna Bican, Elly Brokamp, Laura Duncan, Rizwan Hamid, Jennifer Kennedy, Mary Kozuira, John H. Newman, John A. PhillipsIII, Lynette Rives, Amy K. Robertson, Emily Solem, Joy D. Cogan, F. Sessions Cole, Nichole Hayes, Dana Kiley, Kathy Sisco, Jennifer Wambach, Daniel Wegner, Dustin Baldridge, Stephen Pak, Timothy Schedl, Jimann Shin, Lilianna Solnica-Krezel, Eric Rush, Geoffrey S. Pitt, Ping Yee Billie Au, Boston Children's Hospital, University of Alberta, Universität Leipzig [Leipzig], Geneva University Hospital (HUG), Tel Aviv University [Tel Aviv], Service Génétique Médicale [CHU Poitiers], Centre hospitalier universitaire de Poitiers (CHU Poitiers), Cibles moléculaires et thérapeutiques de la maladie d'Alzheimer (CIMoTHeMA), Université de Poitiers, Laboratoire Jacques-Louis Lions (LJLL (UMR_7598)), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Baylor College of Medicine (BCM), Baylor University, Washington University School of Medicine in St. Louis, Washington University in Saint Louis (WUSTL), CHU Pontchaillou [Rennes], Institut de Génétique et Développement de Rennes (IGDR), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Istituti di Ricovero e Cura a Carattere Scientifico (IRCCS), Lausanne University Hospital, Centre de référence Maladies Rares CLAD-Ouest [Rennes], Broad Institute of MIT and Harvard (BROAD INSTITUTE), Harvard Medical School [Boston] (HMS)-Massachusetts Institute of Technology (MIT)-Massachusetts General Hospital [Boston], Children’s Hospital of Philadelphia (CHOP ), Hospital Universitario La Paz, unité de recherche de l'institut du thorax UMR1087 UMR6291 (ITX), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN), Centre hospitalier universitaire de Nantes (CHU Nantes), Duke University [Durham], University of Kansas Medical Center [Lawrence], University of Missouri System, Children's Mercy Hospital [Kansas City], Weill Cornell Medicine [New York], University of Calgary, Research reported in this paper was supported by the NIH Common Fund, through the Office of Strategic Coordination/Office of the NIH Director under award number(s) (U01HG007709 [Baylor College of Medicine] and U01HG007672 [Duke University to V.S.]). Additional funding for this project was under award number 1RO1HD090132-01A1 (Cornell University to G.P.). The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. Additional funding was provided by a Canadian Institutes of Health Research Grant (MOP-97988 to H.T.K.), and a Rowland and Muriel Haryett Fellowship (University of Alberta, to S.M.L.) and a fellowship from the Ministry of Education and Research of the Community of Madrid to M.P.M. (B2017/BMD-3721), and microgrant from the Rare Disease Foundation (P.Y.B.A. and H.T.K.). Sequencing and analysis was supported by the National Human Genome Research Institute grants UM1 HG008900 and R01 HG009141. K.A.D., B.C., and E.O. were supported the National Institute of Mental Health U01 MH119689., Universität Leipzig, Columbia University Medical Center (CUMC), Columbia University [New York], Tel Aviv University (TAU), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Unité de recherche de l'institut du thorax (ITX-lab), University of Kansas Medical Center [Kansas City, KS, USA], Weill Cornell Medicine [Cornell University], and Cornell University [New York]

Subjects
Ataxia, Calcium Channels, L-Type, Long QT syndrome, Timothy syndrome, Bioinformatics, Article, 03 medical and health sciences, Epilepsy, 0302 clinical medicine, Intellectual disability, medicine, Missense mutation, Humans, Autistic Disorder, Genetics (clinical), 030304 developmental biology, 0303 health sciences, [SDV.GEN]Life Sciences [q-bio]/Genetics, business.industry, medicine.disease, Hypotonia, Long QT Syndrome, Phenotype, Autism, Syndactyly, medicine.symptom, business, 030217 neurology & neurosurgery
Abstract

International audience; Purpose:CACNA1C encodes the alpha-1-subunit of a voltage-dependent L-type calcium channel expressed in human heart and brain. Heterozygous variants in CACNA1C have previously been reported in association with Timothy syndrome and long QT syndrome. Several case reports have suggested that CACNA1C variation may also be associated with a primarily neurological phenotype.Methods:We describe 25 individuals from 22 families with heterozygous variants in CACNA1C, who present with predominantly neurological manifestations.Results:Fourteen individuals have de novo, nontruncating variants and present variably with developmental delays, intellectual disability, autism, hypotonia, ataxia, and epilepsy. Functional studies of a subgroup of missense variants via patch clamp experiments demonstrated differential effects on channel function in vitro, including loss of function (p.Leu1408Val), neutral effect (p.Leu614Arg), and gain of function (p.Leu657Phe, p.Leu614Pro). The remaining 11 individuals from eight families have truncating variants in CACNA1C. The majority of these individuals have expressive language deficits, and half have autism.Conclusion:We expand the phenotype associated with CACNA1C variants to include neurodevelopmental abnormalities and epilepsy, in the absence of classic features of Timothy syndrome or long QT syndrome.

Published
2020

12. Correction: Phenotypic expansion of CACNA1C-associated disorders to include isolated neurological manifestations

Author

Lance H. Rodan, Rebecca C. Spillmann, Harley T. Kurata, Shawn M. Lamothe, Jasmine Maghera, Rami Abou Jamra, Anna Alkelai, Stylianos E. Antonarakis, Isis Atallah, Omer Bar-Yosef, Frédéric Bilan, Kathrine Bjorgo, Xavier Blanc, Patrick Van Bogaert, Yoav Bolkier, Lindsay C. Burrage, Björn U. Christ, Jorge L. Granadillo, Patricia Dickson, Kirsten A. Donald, Christèle Dubourg, Aviva Eliyahu, Lisa Emrick, Kendra Engleman, Michaela Veronika Gonfiantini, Jean-Marc Good, Judith Kalser, Chiara Kloeckner, Guus Lachmeijer, Marina Macchiaiolo, Francesco Nicita, Sylvie Odent, Emily O’Heir, Xilma Ortiz-Gonzalez, Marta Pacio-Miguez, María Palomares-Bralo, Loren Pena, Konrad Platzer, Mathieu Quinodoz, Emmanuelle Ranza, Jill A. Rosenfeld, Eliane Roulet-Perez, Avni Santani, Fernando Santos-Simarro, Ben Pode-Shakked, Cara Skraban, Rachel Slaugh, Andrea Superti-Furga, Isabelle Thiffault, Richard H. van Jaabrsveld, Marie Vincent, Hong-Gang Wang, Pia Zacher, Mercedes E. Alejandro, Mahshid S. Azamian, Carlos A. Bacino, Ashok Balasubramanyam, Hsiao-Tuan Chao, Gary D. Clark, William J. Craigen, Hongzheng Dai, Shweta U. Dhar, Lisa T. Emrick, Alica M. Goldman, Neil A. Hanchard, Fariha Jamal, Lefkothea Karaviti, Seema R. Lalani, Brendan H. Lee, Richard A. Lewis, Ronit Marom, Paolo M. Moretti, David R. Murdock, Sarah K. Nicholas, James P. Orengo, Jennifer E. Posey, Lorraine Potocki, Susan L. Samson, Daryl A. Scott, Alyssa A. Tran, Tiphanie P. Vogel, Michael F. Wangler, Shinya Yamamoto, Christine M. Eng, Pengfei Liu, Patricia A. Ward, Edward Behrens, Matthew Deardorff, Marni Falk, Kelly Hassey, Kathleen Sullivan, Adeline Vanderver, David B. Goldstein, Heidi Cope, Allyn McConkie-Rosell, Kelly Schoch, Vandana Shashi, Edward C. Smith, Jennifer A. Sullivan, Queenie K.-G. Tan, Nicole M. Walley, Pankaj B. Agrawal, Alan H. Beggs, Gerard T. Berry, Lauren C. Briere, Laurel A. Cobban, Matthew Coggins, Cynthia M. Cooper, Elizabeth L. Fieg, Frances High, Ingrid A. Holm, Susan Korrick, Joel B. Krier, Sharyn A. Lincoln, Joseph Loscalzo, Richard L. Maas, Calum A. MacRae, J. Carl Pallais, Deepak A. Rao, Edwin K. Silverman, Joan M. Stoler, David A. Sweetser, Melissa Walker, Chris A. Walsh, Cecilia Esteves, Emily G. Kelley, Isaac S. Kohane, Kimberly LeBlanc, Alexa T. McCray, Anna Nagy, Surendra Dasari, Brendan C. Lanpher, Ian R. Lanza, Eva Morava, Devin Oglesbee, Guney Bademci, Deborah Barbouth, Stephanie Bivona, Olveen Carrasquillo, Ta Chen Peter Chang, Irman Forghani, Alana Grajewski, Rosario Isasi, Byron Lam, Roy Levitt, Xue Zhong Liu, Jacob McCauley, Ralph Sacco, Mario Saporta, Judy Schaechter, Mustafa Tekin, Fred Telischi, Willa Thorson, Stephan Zuchner, Heather A. Colley, Jyoti G. Dayal, David J. Eckstein, Laurie C. Findley, Donna M. Krasnewich, Laura A. Mamounas, Teri A. Manolio, John J. Mulvihill, Grace L. LaMoure, Madison P. Goldrich, Tiina K. Urv, Argenia L. Doss, Maria T. Acosta, Carsten Bonnenmann, Precilla D’Souza, David D. Draper, Carlos Ferreira, Rena A. Godfrey, Catherine A. Groden, Ellen F. Macnamara, Valerie V. Maduro, Thomas C. Markello, Avi Nath, Donna Novacic, Barbara N. Pusey, Camilo Toro, Colleen E. Wahl, Eva Baker, Elizabeth A. Burke, David R. Adams, William A. Gahl, May Christine V. Malicdan, Cynthia J. Tifft, Lynne A. Wolfe, John Yang, Bradley Power, Bernadette Gochuico, Laryssa Huryn, Lea Latham, Joie Davis, Deborah Mosbrook-Davis, Francis Rossignol, null Ben Solomon, John MacDowall, Audrey Thurm, Wadih Zein, Muhammad Yousef, Margaret Adam, Laura Amendola, Michael Bamshad, Anita Beck, Jimmy Bennett, Beverly Berg-Rood, Elizabeth Blue, Brenna Boyd, Peter Byers, Sirisak Chanprasert, Michael Cunningham, Katrina Dipple, Daniel Doherty, Dawn Earl, Ian Glass, Katie Golden-Grant, Sihoun Hahn, Anne Hing, Fuki M. Hisama, Martha Horike-Pyne, Gail P. Jarvik, Jeffrey Jarvik, Suman Jayadev, Christina Lam, Kenneth Maravilla, Heather Mefford, J. Lawrence Merritt, Ghayda Mirzaa, Deborah Nickerson, Wendy Raskind, Natalie Rosenwasser, C. Ron Scott, Angela Sun, Virginia Sybert, Stephanie Wallace, Mark Wener, Tara Wenger, Euan A. Ashley, Gill Bejerano, Jonathan A. Bernstein, Devon Bonner, Terra R. Coakley, Liliana Fernandez, Paul G. Fisher, Laure Fresard, Jason Hom, Yong Huang, Jennefer N. Kohler, Elijah Kravets, Marta M. Majcherska, Beth A. Martin, Shruti Marwaha, Colleen E. McCormack, Archana N. Raja, Chloe M. Reuter, Maura Ruzhnikov, Jacinda B. Sampson, Kevin S. Smith, Shirley Sutton, Holly K. Tabor, Brianna M. Tucker, Matthew T. Wheeler, Diane B. Zastrow, Chunli Zhao, William E. Byrd, Andrew B. Crouse, Matthew Might, Mariko Nakano-Okuno, Jordan Whitlock, Gabrielle Brown, Manish J. Butte, Esteban C. Dell’Angelica, Naghmeh Dorrani, Emilie D. Douine, Brent L. Fogel, Irma Gutierrez, Alden Huang, Deborah Krakow, Hane Lee, Sandra K. Loo, Bryan C. Mak, Martin G. Martin, Julian A. Martínez-Agosto, Elisabeth McGee, Stanley F. Nelson, Shirley Nieves-Rodriguez, Christina G.S. Palmer, Jeanette C. Papp, Neil H. Parker, Genecee Renteria, Rebecca H. Signer, Janet S. Sinsheimer, Jijun Wan, Lee-kai Wang, Katherine Wesseling Perry, Jeremy D. Woods, Justin Alvey, Ashley Andrews, Jim Bale, John Bohnsack, Lorenzo Botto, John Carey, Laura Pace, Nicola Longo, Gabor Marth, Paolo Moretti, Aaron Quinlan, Matt Velinder, Dave Viskochil, Pinar Bayrak-Toydemir, Rong Mao, Monte Westerfield, Anna Bican, Elly Brokamp, Laura Duncan, Rizwan Hamid, Jennifer Kennedy, Mary Kozuira, John H. Newman, John A. PhillipsIII, Lynette Rives, Amy K. Robertson, Emily Solem, Joy D. Cogan, F. Sessions Cole, Nichole Hayes, Dana Kiley, Kathy Sisco, Jennifer Wambach, Daniel Wegner, Dustin Baldridge, Stephen Pak, Timothy Schedl, Jimann Shin, Lilianna Solnica-Krezel, Eric Rush, Geoffrey S. Pitt, and Ping Yee Billie Au

Subjects
Genetics (clinical)
Published
2021

13. Hypophosphatemia Gene Panel Sponsored Program: A High Yield of Molecular Diagnoses from Clinically Confirmed XLH and Suspected Genetic Hypophosphatemia

Author

Kathryn Dahir, Eric Rush, Daniel Beltran, Scott Eisenbeis, Britt Johnson, Prameela Ramesan, Soodabeh Sarafrazi, Rebecca Truty, and Nicole Miller

Subjects
Endocrinology, Diabetes and Metabolism, Bone and Mineral Metabolism, Parathyroid and Rare Bone Disorders, AcademicSubjects/MED00250
Abstract

X-linked hypophosphatemia (XLH), a dominant disorder caused by a disease-associated variant in the PHEX gene, affects males and females of all ages. Rickets and osteomalacia may be present along with short stature, lower limb deformity, muscle pain and/or weakness/fatigue, bone pain, joint pain/stiffness, hearing difficulty, enthesopathy, osteoarthritis, and dental abscesses. Patients with XLH have below-normal serum phosphate and elevated serum FGF23. XLH is one of multiple etiologies of hypophosphatemia; depending on genetic cause, management may differ. Acquired hypophosphatemia (e.g. tumor induced osteomalacia) is non-hereditary in nature. This program provides a no-charge genetic test to confirm a clinical XLH diagnosis or to aid suspected genetic hypophosphatemia diagnosis. Patients aged >/= 6 months with either a clinical XLH diagnosis or suspicion of genetic hypophosphatemia, as evidenced by 2 or more clinical signs/ symptoms, were eligible for testing. The next generation sequencing panel includes 13 genes: ALPL, CLCN5, CYP2R1, CYP27B1, DMP1, ENPP1, FAH, FAM20C, FGF23, FGFR1, PHEX, SLC34A3 and VDR. Copy number variant detection was performed. 831 unrelated individuals were tested as of June 30, 2020. 569 (68.5%) of these subjects had a PHEX variant: 519 (91.2%) were either pathogenic or likely pathogenic (P/LP) and 50 (8.8%) were variants of uncertain significance (VUS). Of the 312 (37.5%) cases where no PHEX molecular diagnosis was found, 38 (12.2%) had molecular diagnoses associated with other genes/disorders: 4 had a variant (P/LP) in FGF23 (autosomal dominant [AD] hypophosphatemic rickets), 2 had two variants (P/LP) in CYP27B1 (autosomal recessive [AR] vitamin D dependent rickets), 1 had P/LP variants in ENPP1 (AR hypophosphatemic rickets Type 2). There were 27 cases with single P or LP variants in ALPL (AD hypophosphatasia, HPP); 4 cases carried two variants (P/LP) in ALPL (AR form). Of 237 unique P/LP PHEX variants detected: 59 were deletions, duplications or insertions; 37 were copy number variants; 52 were splice-site variants; 89 were single nucleotide variants. Additional family member testing/clinical information resulted in 48 cases having VUS reclassified to P/LP, highlighting the value of cascade family testing/clinical info to resolve VUS. RNA analyses to resolve VUS may further improve molecular diagnostic yield. Program results demonstrate a high diagnostic yield for XLH/ genetic hypophosphatemia and new insight into XLH-associated PHEX variants.

Published
2021

14. Intermediate-temperature ordering in a three-state antiferromagnetic Potts model

Author

Shafiqur Rahman, Robert H. Swendsen, and Eric Rush

Subjects
Physics, Condensed matter physics, Phase (matter), Intermediate temperature, Antiferromagnetism, State (functional analysis), Degeneracy (mathematics), Symmetry (physics), Monte Carlo algorithm, Potts model
Abstract

We investigate the ordering in a three-state antiferromagnetic Potts model on a simple cubic lattice by using an efficient cluster-flipping Monte Carlo algorithm. By considering the degeneracy due to the sublattices in two different ways, we arrive at two entirely different phases [rotationally symmetric (RS) and permutationally symmetric sublattice (PSS)] for the intermediate temperature region. Each of these phases has been claimed to be the correct phase by different authors in a recent controversy over ordering in this system. We show that the system moves from a broken sublattice symmetry phase at low temperature to the disordered phase by going through the RS phase at intermediate temperature, and that the PSS phase results from taking the sublattice degeneracy into account in an incorrect fashion.

Published
1998

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