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1. Endocrine and Growth Abnormalities in 4H Leukodystrophy Caused by Variants in POLR3A, POLR3B, and POLR1C

Author

Pelletier, F. Perrier, S. Cayami, F.K. Mirchi, A. Saikali, S. Tran, L.T. Ulrick, N. Guerrero, K. Rampakakis, E. Van Spaendonk, R.M.L. Naidu, S. Pohl, D. Gibson, W.T. Demos, M. Goizet, C. Tejera-Martin, I. Potic, A. Fogel, B.L. Brais, B. Sylvain, M. Sébire, G. Lourenço, C.M. Bonkowsky, J.L. Catsman-Berrevoets, C. Pinto, P.S. Tirupathi, S. Strømme, P. De Grauw, T. Gieruszczak-Bialek, D. Krägeloh-Mann, I. Mierzewska, H. Philippi, H. Rankin, J. Atik, T. Banwell, B. Benko, W.S. Blaschek, A. Bley, A. Boltshauser, E. Bratkovic, D. Brozova, K. Cimas, I. Clough, C. Corenblum, B. Dinopoulos, A. Dolan, G. Faletra, F. Fernandez, R. Fletcher, J. Garcia Garcia, M.E. Gasparini, P. Gburek-Augustat, J. Gonzalez Moron, D. Hamati, A. Harting, I. Hertzberg, C. Hill, A. Hobson, G.M. Innes, A.M. Kauffman, M. Kirwin, S.M. Kluger, G. Kolditz, P. Kotzaeridou, U. La Piana, R. Liston, E. McClintock, W. McEntagart, M. McKenzie, F. Melançon, S. Misbahuddin, A. Suri, M. Monton, F.I. Moutton, S. Murphy, R.P.J. Nickel, M. Onay, H. Orcesi, S. Özklnay, F. Patzer, S. Pedro, H. Pekic, S. Pineda Marfa, M. Pizzino, A. Plecko, B. Poll-The, B.T. Popovic, V. Rating, D. Rioux, M.-F. Rodriguez Espinosa, N. Ronan, A. Ostergaard, J.R. Rossignol, E. Sanchez-Carpintero, R. Schossig, A. Senbil, N. Sønderberg Roos, L.K. Stevens, C.A. Synofzik, M. Sztriha, L. Tibussek, D. Timmann, D. Tonduti, D. Van De Warrenburg, B.P. Vázquez-López, M. Venkateswaran, S. Wasling, P. Wassmer, E. Webster, R.I. Wiegand, G. Yoon, G. Rotteveel, J. Schiffmann, R. Van Der Knaap, M.S. Vanderver, A. Martos-Moreno, G.Á. Polychronakos, C. Wolf, N.I. Bernard, G.

Abstract

Context: 4H or POLR3-related leukodystrophy is an autosomal recessive disorder typically characterized by hypomyelination, hypodontia, and hypogonadotropic hypogonadism, caused by biallelic pathogenic variants in POLR3A, POLR3B, POLR1C, and POLR3K. The endocrine and growth abnormalities associated with this disorder have not been thoroughly investigated to date. Objective: To systematically characterize endocrine abnormalities of patients with 4H leukodystrophy. Design: An international cross-sectional study was performed on 150 patients with genetically confirmed 4H leukodystrophy between 2015 and 2016. Endocrine and growth abnormalities were evaluated, and neurological and other non-neurological features were reviewed. Potential genotype/phenotype associations were also investigated. Setting: This was a multicenter retrospective study using information collected from 3 predominant centers. Patients: A total of 150 patients with 4H leukodystrophy and pathogenic variants in POLR3A, POLR3B, or POLR1C were included. Main Outcome Measures: Variables used to evaluate endocrine and growth abnormalities included pubertal history, hormone levels (estradiol, testosterone, stimulated LH and FSH, stimulated GH, IGF-I, prolactin, ACTH, cortisol, TSH, and T4), and height and head circumference charts. Results: The most common endocrine abnormalities were delayed puberty (57/74; 77% overall, 64% in males, 89% in females) and short stature (57/93; 61%), when evaluated according to physician assessment. Abnormal thyroid function was reported in 22% (13/59) of patients. Conclusions: Our results confirm pubertal abnormalities and short stature are the most common endocrine features seen in 4H leukodystrophy. However, we noted that endocrine abnormalities are typically underinvestigated in this patient population. A prospective study is required to formulate evidence-based recommendations for management of the endocrine manifestations of this disorder. © 2020 The Author(s) 2020. Published by Oxford University Press on behalf of the Endocrine Society.

Published
2021

2. S02. Delineation of a recognisable phenotype of interstitial deletion 3 (q22.3q25.1) in a case with previously unreported truncus arteriosus

Author

Stewart, Fiona J, Wraith, J Edmond, Tylee, Karen, Cooper, Alan, Rea, Gillian, McCullough, Simon, McNerlan, Susan S, Craig, Brian, Morrison, Patrick J, Meaney, Karen, O'hIci, Bronagh, Lynch, Sally Ann, Barton, David E, Jeffers, Lisa, Fitzsimons, Donna, McCaughan, Eilis, Morrison, Patrick, Heggarty, SV, Wright, W, Stewart, FJ, Hart, PJ, McKeown, P, Graham, CA, Dagdan, Elif, Morris, Derek W, Hill, Matthew, Rothermundt, Matthias, Kästner, Florian, Hohoff, Christa, Deckert, Jürgen, von Eiff, Christof, Krakowitzky, Petra, Hargreaves, April, Rose, Emma, Corvin, Aiden P, Donohoe, Gary, Gill, Michael, McKeon, Patrick, Roche, Siobhan, Quinn, Emma M, Kenny, Elaine M, Cormican, Paul, Gates, Amy S, McCarthy, Nina, Vangjeli, Ciara, Cavalleri, Gianpiero, Shianna, Kevin, Delanty, Norman, O'Brien, Eoin, Harvey, Brian, Stanton, Alice, Heron, Elizabeth A, Gilks, William P, Surendran, Praveen, Shields, Denis, Minguzzi, S, Molloy, A, Kirke, P, Mills, J, Scott, J, Troendle, J, Pangilinan, F, Brody, L, Parle-McDermott, A, Carey, A, Lynch, S A, Hegarty, A-M, Betts, D R, Beckett, A, Smith, G, McCullough, S, Humphreys, M, Dabir, T, McKee, S, Magee, A, Stewatr, F, McConnell, V, Simpson, DA, Harwood, L, Clark, GR, Alexander, S, Silvestri, G, Willoughby, C, Donnelly, Deirdre E, McConnell, Vivienne, Paterson, Anne, Patrick, J Morrison, Turnpenny, Peter, McConnell, Vivienne PM, Beattie, ED, Møller, Lisbeth Birk, Hughes, Joanne, Rea, G, Tirupathi, S, Herron, B, Healy, E, Woods, P, Beattie, D, Stewart, F, Crawford, H, McDaid, J, Hegarty, AM, Turner, J, Clarke, G, Morris, T, O'hIci, B, Meaney, K, Green, A, Betts, DR, Jones, J, McCullough, SJ, Stewart, F J, Bradley, Lisa, Willoughby, Colin, Murtagh, Katherine, Ekstrom, L, Mullarkey, M, Logan, Amy, McGrattan, Peter, Marron, G, Harding-Lester, Siobhan, Bradley, Aoife, Wright, WT, Nicholls, DP, McNerlan, SE, McGrattan, P, Heggarty, S, Erwin, P, Dabir, Tabib, Stewart, Fiona, Grier, David G, Smith, Geoff, Magee, Alex, Hardy, Rachel, Bhupeshkumar, V, Kumar, Vijaya, Naik, Sudhir, Sadhnani, Subash, Stanton, Alice V, Muszynska, D, Dash, DP, Lechner, J, O'Prey, D, Frazer, D, Moore, J, Jackson, J, Hughes, AE, Willoughby, CE, Vanc, DR, Maxwel, AP, McKnigh, AJ, Skehan, EB, Abdulrahim, MMA, Parfrey, NA, Hand, CK, Habibi, R, Shiva, M, Mokhtari, P, Gourabi, H, Casey, J, Conroy, J, Regan, R, Shah, N, Lynch, SA, Ennis, S, Frazer, DG, Simpson, DAC, Paro, Simona, McGurk, Leeanne, Raja, Aruna, Sun, Hui, Noble, Brendon, Heath, Paul, Ince, Paul, Shaw, Pamela, Brindle, James, O'Connell, Mary, Keegan, Liam, Carroll, N, MacCooey, A, Sweeney, MR, Boilson, A, Scott, JM, Staines, A, Kelleher, C, Daly, L, Bailey, SW, Alverson, PB, and Ayling, JE

Subjects
Poster Presentations, Abstracts, Spoken Paper, Spoken Papers, Abstract
Published
2010

3. Endocrine and Growth Abnormalities in 4H Leukodystrophy Caused by Variants in POLR3A, POLR3B, and POLR1C

Author

Petter Strømme, Ferda Ozkinay, Heike Philippi, Pontus Wasling, Sebastien Moutton, Dagmar Timmann, Maria Vázquez-López, Pedro S Pinto, Annette Bley, A. Blaschek, Gabriel Á. Martos-Moreno, A. Micheil Innes, Alan Hill, Argirios Dinopoulos, Fiona Haslam McKenzie, Janice M. Fletcher, Barbara Plecko, Hanna Mierzewska, Matthis Synofzik, Cathy A. Stevens, Raphael Schiffmann, Janina Gburek-Augustat, Miriam Nickel, Constantin Polychronakos, Kether Guerrero, Susan M. Kirwin, Icíar Cimas, Inga Harting, Bwee Tien Poll-The, Vera Popovic, Coriene E. Catsman-Berrevoets, Simona Orcesi, Nicole I. Wolf, Laura Roos, Grace M. Hobson, Norberto Rodriguez Espinosa, Gert Wiegand, Bernard Brais, Julia Rankin, Marjo S. van der Knaap, Cyril Goizet, Michelle Demos, Sandra Pekic, Ingrid Tejera-Martin, Adeline Vanderver, Stefanie Perrier, Brent L. Fogel, Eriskay Liston, Meriel McEntagart, Ferdy K. Cayami, Bart P.C. van de Warrenburg, Anne Ronan, Paolo Gasparini, Bernard Corenblum, Joost Rotteveel, Mercedes Pineda Marfa, Roberta La Piana, Richard Webster, Eugen Boltshauser, Amytice Mirchi, Dietz Rating, Klara Brozova, Ingeborg Krägeloh-Mann, Marcelo Andrés Kauffman, Nesrin Senbil, Gerhard Kluger, Brenda Banwell, Flavio Faletra, Michel Sylvain, Urania Kotzaeridou, Tahir Atik, Raymond Fernandez, Stephan Saikali, William S. Benko, Fernando I Monton, Dorota Gieruszczak-Białek, Dolores Gonzalez Moron, Charles Marques Lourenço, Amy Pizzino, Ana Potic, Elsa Rossignol, Ton J. de Grauw, William T. Gibson, Luan T. Tran, Davide Tonduti, Rosalina M. L. van Spaendonk, Rocío Sánchez-Carpintero, Raymond P J Murphy, Guillaume Sébire, Daniela Pohl, Joshua L. Bonkowsky, Christopher Clough, Sandya Tirupathi, Maria Eugenia Garcia Garcia, Christoph Hertzberg, Serge Melançon, Anjum Misbahuddin, Félixe Pelletier, Evangeline Wassmer, Gail Dolan, Marie-France Rioux, Geneviève Bernard, Sunita Venkateswaran, Steffi Patzer, Aline Hamati, Helio Pedro, Hüseyin Onay, Drago Bratkovic, Petra Kolditz, Daniel Tibussek, Sakkubai Naidu, Nicole Ulrick, Emmanouil Rampakakis, William McClintock, Anna Schossig, Mohnish Suri, Grace Yoon, László Sztriha, John R. Østergaard, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Canadian Institutes of Health Research, Fonds de recherche du Québec, Fonds de Recherche du Québec - Santé, Neurology, Functional Genomics, Pelletier, F., Perrier, S., Cayami, F. K., Mirchi, A., Saikali, S., Tran, L. T., Ulrick, N., Guerrero, K., Rampakakis, E., van Spaendonk, R. M. L., Naidu, S., Pohl, D., Gibson, W. T., Demos, M., Goizet, C., Tejera-Martin, I., Potic, A., Fogel, B. L., Brais, B., Sylvain, M., Sebire, G., Lourenco, C. M., Bonkowsky, J. L., Catsman-Berrevoets, C., Pinto, P. S., Tirupathi, S., Stromme, P., de Grauw, T., Gieruszczak-Bialek, D., Krageloh-Mann, I., Mierzewska, H., Philippi, H., Rankin, J., Atik, T., Banwell, B., Benko, W. S., Blaschek, A., Bley, A., Boltshauser, E., Bratkovic, D., Brozova, K., Cimas, I., Clough, C., Corenblum, B., Dinopoulos, A., Dolan, G., Faletra, F., Fernandez, R., Fletcher, J., Garcia Garcia, M. E., Gasparini, P., Gburek-Augustat, J., Gonzalez Moron, D., Hamati, A., Harting, I., Hertzberg, C., Hill, A., Hobson, G. M., Innes, A. M., Kauffman, M., Kirwin, S. M., Kluger, G., Kolditz, P., Kotzaeridou, U., La Piana, R., Liston, E., Mcclintock, W., Mcentagart, M., Mckenzie, F., Melancon, S., Misbahuddin, A., Suri, M., Monton, F. I., Moutton, S., Murphy, R. P. J., Nickel, M., Onay, H., Orcesi, S., Ozkinay, F., Patzer, S., Pedro, H., Pekic, S., Pineda Marfa, M., Pizzino, A., Plecko, B., Poll-The, B. T., Popovic, V., Rating, D., Rioux, M. -F., Rodriguez Espinosa, N., Ronan, A., Ostergaard, J. R., Rossignol, E., Sanchez-Carpintero, R., Schossig, A., Senbil, N., Sonderberg Roos, L. K., Stevens, C. A., Synofzik, M., Sztriha, L., Tibussek, D., Timmann, D., Tonduti, D., van de Warrenburg, B. P., Vazquez-Lopez, M., Venkateswaran, S., Wasling, P., Wassmer, E., Webster, R. I., Wiegand, G., Yoon, G., Rotteveel, J., Schiffmann, R., van der Knaap, M. S., Vanderver, A., Martos-Moreno, G. A., Polychronakos, C., Wolf, N. I., Bernard, G., Human genetics, Pediatric surgery, Amsterdam Reproduction & Development (AR&D), and Amsterdam Neuroscience - Cellular & Molecular Mechanisms

Subjects
Male, Recessive Mutations, Mitochondrial Diseases, genetics [Mitochondrial Diseases], hypomyelination, etiology [Endocrine System Diseases], Endocrinology, Diabetes and Metabolism, Clinical Biochemistry, Medizin, POLR3A protein, human, genetics [Endocrine System Diseases], Biochemistry, Cohort Studies, 0302 clinical medicine, Endocrinology, etiology [Growth Disorders], Diagnosis, epidemiology [Growth Disorders], 4H leukodystrophy, Online Only articles, Child, Prospective cohort study, Growth Disorders, genetics [Growth Disorders], POLR3-related leukodystrophy, 0303 health sciences, DNA-Directed RNA Polymerases, Pattern-Recognition, Diffuse Hypomyelination, Classification, Disorders of movement Donders Center for Medical Neuroscience [Radboudumc 3], 3. Good health, epidemiology [Hereditary Central Nervous System Demyelinating Diseases], Hormone Deficiency, POLR1C protein, human, Child, Preschool, Female, medicine.symptom, AcademicSubjects/MED00250, Adult, Delayed puberty, Subunit, medicine.medical_specialty, Adolescent, Context (language use), Endocrine System Diseases, Short stature, genetics [Hereditary Central Nervous System Demyelinating Diseases], Genetic Heterogeneity, Young Adult, 03 medical and health sciences, SDG 3 - Good Health and Well-being, hypogonadotropic hypogonadism, Hypogonadotropic hypogonadism, etiology [Hypogonadism], Internal medicine, medicine, genetics [RNA Polymerase III], Humans, Endocrine system, ddc:610, POLR3B protein, human, genetics [DNA-Directed RNA Polymerases], Clinical Research Articles, Retrospective Studies, 030304 developmental biology, complications [Hereditary Central Nervous System Demyelinating Diseases], business.industry, Hypogonadism, Biochemistry (medical), Leukodystrophy, Infant, Newborn, Infant, RNA Polymerase III, medicine.disease, complications [Mitochondrial Diseases], epidemiology [Mitochondrial Diseases], epidemiology [Endocrine System Diseases], Hereditary Central Nervous System Demyelinating Diseases, Cross-Sectional Studies, Biological Variation, Population, Mutation, epidemiology [Hypogonadism], business, 030217 neurology & neurosurgery, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Hormone
Abstract

Context 4H or POLR3-related leukodystrophy is an autosomal recessive disorder typically characterized by hypomyelination, hypodontia, and hypogonadotropic hypogonadism, caused by biallelic pathogenic variants in POLR3A, POLR3B, POLR1C, and POLR3K. The endocrine and growth abnormalities associated with this disorder have not been thoroughly investigated to date. Objective To systematically characterize endocrine abnormalities of patients with 4H leukodystrophy. Design An international cross-sectional study was performed on 150 patients with genetically confirmed 4H leukodystrophy between 2015 and 2016. Endocrine and growth abnormalities were evaluated, and neurological and other non-neurological features were reviewed. Potential genotype/phenotype associations were also investigated. Setting This was a multicenter retrospective study using information collected from 3 predominant centers. Patients A total of 150 patients with 4H leukodystrophy and pathogenic variants in POLR3A, POLR3B, or POLR1C were included. Main Outcome Measures Variables used to evaluate endocrine and growth abnormalities included pubertal history, hormone levels (estradiol, testosterone, stimulated LH and FSH, stimulated GH, IGF-I, prolactin, ACTH, cortisol, TSH, and T4), and height and head circumference charts. Results The most common endocrine abnormalities were delayed puberty (57/74; 77% overall, 64% in males, 89% in females) and short stature (57/93; 61%), when evaluated according to physician assessment. Abnormal thyroid function was reported in 22% (13/59) of patients. Conclusions Our results confirm pubertal abnormalities and short stature are the most common endocrine features seen in 4H leukodystrophy. However, we noted that endocrine abnormalities are typically underinvestigated in this patient population. A prospective study is required to formulate evidence-based recommendations for management of the endocrine manifestations of this disorder., Canadian Institutes of Health Research [201610PJT-377869, MOP-G2-341146-159133-BRIDG]; Fondation Les Amis d'Elliot; Leuco-Action; Fondation Lueur d'Espoir pour Ayden; Fondation le Tout pour Loo; Reseau de Medecine Genetique Appliquee of the Fonds de Recherche du Quebec-Sante; Compute Canada; Fonds de Recherche du Quebec en Sante (FRQS) Doctoral Scholarship; Fondation du Grand defi Pierre Lavoie Doctoral Scholarship; McGill Faculty of Medicine F. S.B. Miller Fellowship; Research Institute of the McGill University Health Centre Desjardins Studentship in Child Health Research; Directorate of Higher Education Overseas Scholarship-Dikti Scholarship, Ministry of National Education, Republic of Indonesia; CIHR [201603PJT-148695]; BC Children's Hospital Foundation through its intramural Investigator Grant Award Program (IGAP); National Institute for Neurological Disorders and Stroke [R01NS082094]; Jakob Kamens Chair in Translational Neurotherapeutics; Fonds de Recherche du Quebec-Sante (FRQS); Canadian Institutes of Health Research; European Reference Network for Rare Neurological Disorders (ERN-RND) [739510], This study was supported by grants from the Canadian Institutes of Health Research (201610PJT-377869, MOP-G2-341146-159133-BRIDG), Fondation Les Amis d'Elliot, Leuco-Action, Fondation Lueur d'Espoir pour Ayden, Fondation le Tout pour Loo, and Reseau de Medecine Genetique Appliquee of the Fonds de Recherche du Quebec-Sante to G. Bernard. This research was enabled in part by support provided by Compute Canada (www.computecanada.ca).S.Perrier is supported by the Fonds de Recherche du Quebec en Sante (FRQS) Doctoral Scholarship, the Fondation du Grand defi Pierre Lavoie Doctoral Scholarship, the McGill Faculty of Medicine F. S.B. Miller Fellowship, and the Research Institute of the McGill University Health Centre Desjardins Studentship in Child Health Research. F. K.C. is a recipient of the Directorate of Higher Education Overseas Scholarship-Dikti Scholarship, Ministry of National Education, Republic of Indonesia. W.T. G. received funding from the CIHR (201603PJT-148695) and is supported by the BC Children's Hospital Foundation through its intramural Investigator Grant Award Program (IGAP). B.L. F. was supported by the National Institute for Neurological Disorders and Stroke (R01NS082094). A.V. receives funding from the Jakob Kamens Chair in Translational Neurotherapeutics. G. Bernard has received a Research Scholar Junior 1 award from the Fonds de Recherche du Quebec-Sante (FRQS) (2012-2016) and the New Investigator Salary Award from the Canadian Institutes of Health Research (2017-2022). I.K.M., M. Synofzik, D. Tonduti, B.P.v.d.W., M.S. V.d.K., and N.I.W. are members of the European Reference Network for Rare Neurological Disorders (ERN-RND), project ID 739510.

Published
2021

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