학술논문
Progressive cerebellar atrophy in a patient with complex II and III deficiency and a novel deleterious variant in SDHA: A Counseling Conundrum
Document Type
Report
Author
Sturrock, Beattie R.H.; Macnamara, Ellen F.; Mcguire, Peter; Kruk, Shannon; Yang, Ivan; Murphy, Jennifer; Tifft, Cyndi J.; Gordon‐Lipkin, Eliza; Acosta, Maria T.; Adam, Margaret; Adams, David R.; Agrawal, Pankaj B.; Alejandro, Mercedes E.; Alvey, Justin; Amendola, Laura; Andrews, Ashley; Ashley, Euan A.; Azamian, Mahshid S.; Bacino, Carlos A.; Bademci, Guney; Baker, Eva; Balasubramanyam, Ashok; Baldridge, Dustin; Bale, Jim; Bamshad, Michael; Barbouth, Deborah; Bayrak‐Toydemir, Pinar; Beck, Anita; Beggs, Alan H.; Behrens, Edward; Bejerano, Gill; Bennet, Jimmy; Berg‐Rood, Beverly; Bernstein, Jonathan A.; Berry, Gerard T.; Bican, Anna; Bivona, Stephanie; Blue, Elizabeth; Bohnsack, John; Bonnenmann, Carsten; Bonner, Devon; Botto, Lorenzo; Boyd, Brenna; Briere, Lauren C.; Brokamp, Elly; Brown, Gabrielle; Burke, Elizabeth A.; Burrage, Lindsay C.; Butte, Manish J.; Byers, Peter; Byrd, William E.; Carey, John; Carrasquillo, Olveen; Chang, Ta Chen Peter; Chanprasert, Sirisak; Chao, Hsiao‐Tuan; Clark, Gary D.; Coakley, Terra R.; Cobban, Laurel A.; Cogan, Joy D.; Coggins, Matthew; Cole, F Sessions; Colley, Heather A.; Cooper, Cynthia M.; Cope, Heidi; Craigen, William J.; Crouse, Andrew B.; Cunningham, Michael; D' Souza, Precilla; Dai, Hongzheng; Dasari, Surendra; Davids, Mariska; Dayal, Jyoti G.; Deardorff, Matthew; Dell'Angelica, Esteban C.; Dhar, Shweta U.; Dipple, Katrina; Doherty, Daniel; Dorrani, Naghmeh; Douine, Emilie D.; Draper, David D.; Duncan, Laura; Earl, Dawn; Eckstein, David J.; Emrick, Lisa T.; Eng, Christine M.; Esteves, Cecilia; Estwick, Tyra; Falk, Marni; Fernandez, Liliana; Ferreira, Carlos; Fieg, Elizabeth L.; Findley, Laurie C.; Fisher, Paul G.; Fogel, Brent L.; Forghani, Irman; Fresard, Laure; Gahl, William A.; Glass, Ian; Godfrey, Rena A.; Golden‐Grant, Katie; Goldman, Alica M.; Goldstein, David B.; Grajewski, Alana; Groden, Catherine A.; Gropman, Andrea L.; Gutierrez, Irma; Hahn, Sihoun; Hamid, Rizwan; Hanchard, Neil A.; Hassey, Kelly; Hayes, Nichole; High, Frances; Hing, Anne; Hisama, Fuki M.; Holm, Ingrid A.; Hom, Jason; Horike‐Pyne, Martha; Huang, Alden; Huang, Yong; Isasi, Rosario; Jamal, Fariha; Jarvik, Gail P.; Jarvik, Jeffrey; Jayadev, Suman; Johnston, Jean M.; Karaviti, Lefkothea; Kelley, Emily G.; Kennedy, Jennifer; Kiley, Dana; Kohane, Isaac S.; Kohler, Jennefer N.; Krakow, Deborah; Krasnewich, Donna M.; Kravets, Elijah; Korrick, Susan; Koziura, Mary; Krier, Joel B.; Lalani, Seema R.; Lam, Byron; Lam, Christina; Lanpher, Brendan C.; Lanza, Ian R.; Lau, C. Christopher; Leblanc, Kimberly; Lee, Brendan H.; Lee, Hane; Levitt, Roy; Lewis, Richard A.; Lincoln, Sharyn A.; Liu, Pengfei; Liu, Xue Zhong; Longo, Nicola; Loo, Sandra K.; Loscalzo, Joseph; Maas, Richard L.; Macrae, Calum A.; Maduro, Valerie V.; Majcherska, Marta M.; Mak, Bryan; Malicdan, May Christine V.; Mamounas, Laura A.; Manolio, Teri A.; Mao, Rong; Maravilla, Kenneth; Markello, Thomas C.; Marom, Ronit; Marth, Gabor; Martin, Beth A.; Martin, Martin G.; Martínez‐Agosto, Julian A.; Marwaha, Shruti; Mccauley, Jacob; Mcconkie‐Rosell, Allyn; Mccormack, Colleen E.; Mccray, Alexa T.; Mcgee, Elisabeth; Mefford, Heather; Merritt, J. Lawrence; Might, Matthew; Mirzaa, Ghayda; Morava, Eva; Moretti, Paolo M.; Morimoto, Marie; Mulvihill, John J.; Murdock, David R.; Nakano‐Okuno, Mariko; Nath, Avi; Nelson, Stan F.; Newman, John H.; Nicholas, Sarah K.; Nickerson, Deborah; Nieves‐Rodriguez, Shirley; Novacic, Donna; Oglesbee, Devin; Orengo, James P.; Pace, Laura; Pak, Stephen; Pallais, J. Carl; Palmer, Christina G.S.; Papp, Jeanette C.; Parker, Neil H.; Phillips, John A.; Posey, Jennifer E.; Potocki, Lorraine; Pusey, Barbara N.; Quinlan, Aaron; Raskind, Wendy; Raja, Archana N.; Rao, Deepak A.; Renteria, Genecee; Reuter, Chloe M.; Rives, Lynette; Robertson, Amy K.; Rodan, Lance H.; Rosenfeld, Jill A.; Rosenwasser, Natalie; Ruzhnikov, Maura; Sacco, Ralph; Sampson, Jacinda B.; Samson, Susan L.; Saporta, Mario; Scott, C. Ron; Schaechter, Judy; Schedl, Timothy; Schoch, Kelly; Scott, Daryl A.; Sharma, Prashant; Shashi, Vandana; Shin, Jimann; Signer, Rebecca; Sillari, Catherine H.; Silverman, Edwin K.; Sinsheimer, Janet S.; Sisco, Kathy; Smith, Edward C.; Smith, Kevin S.; Solem, Emily; Solnica‐Krezel, Lilianna; Spillmann, Rebecca C.; Stoler, Joan M.; Stong, Nicholas; Sullivan, Jennifer A.; Sullivan, Kathleen; Sun, Angela; Sutton, Shirley; Sweetser, David A.; Sybert, Virginia; Tabor, Holly K.; Tamburro, Cecelia P.; Tan, Queenie K.‐G.; Tekin, Mustafa; Telischi, Fred; Thorson, Willa; Tifft, Cynthia J.; Toro, Camilo; Tran, Alyssa A.; Tucker, Brianna M.; Urv, Tiina K.; Vanderver, Adeline; Velinder, Matt; Viskochil, Dave; Vogel, Tiphanie P.; Wahl, Colleen E.; Wallace, Stephanie; Walley, Nicole M.; Walsh, Chris A.; Walker, Melissa; Wambach, Jennifer; Wan, Jijun; Wang, Lee‐Kai; Wangler, Michael F.; Ward, Patricia A.; Wegner, Daniel; Wener, Mark; Wenger, Tara; Perry, Katherine Wesseling; Westerfield, Monte; Wheeler, Matthew T.; Whitlock, Jordan; Wolfe, Lynne A.; Woods, Jeremy D.; Yamamoto, Shinya; Yang, John; Yu, Guoyun; Zastrow, Diane B.; Zhao, Chunli; Zuchner, Stephan
Source
Molecular Genetics & Genomic Medicine. June 2021, Vol. 9 Issue 6
Subject
Language
English
Abstract
INTRODUCTION Mitochondrial diseases comprise a heterogeneous group of inborn errors of metabolism resulting from deleterious variants in genes involved in oxidative phosphorylation and mitochondrial maintenance, which are encoded by either [...]
: Background: Complex II is an essential component of the electron transport chain, linking it with the tricarboxylic acid cycle. Its four subunits are encoded in the nuclear genome, and deleterious variants in these genes, including SDHA (OMIM 600857), are associated with a wide range of symptoms including neurological disease, cardiomyopathy, and neoplasia (paraganglioma‐pheochromocytomas (PGL/PCC), and gastrointestinal stromal tumors). Deleterious variants of SDHA are most frequently associated with Leigh and Leigh‐like syndromes. Methods and Results: Here, we describe a case of a 9‐year‐old boy with tremor, nystagmus, hypotonia, developmental delay, significant ataxia, and progressive cerebellar atrophy. He was found to have biallelic variants in SDHA, a known pathogenic variant (c.91C>T (p.R31*)), and a variant of unknown significance (c.454G>A (p.E152K)). Deficient activity of complexes II and III was detected in fibroblasts from the patient consistent with a diagnosis of a respiratory chain disorder. Conclusion: We, therefore, consider whether c.454G>A (p.E152K) is, indeed, a pathogenic variant, and what implications it has for family members who carry the same variant.
: Background: Complex II is an essential component of the electron transport chain, linking it with the tricarboxylic acid cycle. Its four subunits are encoded in the nuclear genome, and deleterious variants in these genes, including SDHA (OMIM 600857), are associated with a wide range of symptoms including neurological disease, cardiomyopathy, and neoplasia (paraganglioma‐pheochromocytomas (PGL/PCC), and gastrointestinal stromal tumors). Deleterious variants of SDHA are most frequently associated with Leigh and Leigh‐like syndromes. Methods and Results: Here, we describe a case of a 9‐year‐old boy with tremor, nystagmus, hypotonia, developmental delay, significant ataxia, and progressive cerebellar atrophy. He was found to have biallelic variants in SDHA, a known pathogenic variant (c.91C>T (p.R31*)), and a variant of unknown significance (c.454G>A (p.E152K)). Deficient activity of complexes II and III was detected in fibroblasts from the patient consistent with a diagnosis of a respiratory chain disorder. Conclusion: We, therefore, consider whether c.454G>A (p.E152K) is, indeed, a pathogenic variant, and what implications it has for family members who carry the same variant.