9 results on '"Mcneill, Alisdair"'
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2. PLA2G6 mutations and other rare causes of neurodegeneration with brain iron accumulation.
- Author
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McNeill A
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- Humans, Brain metabolism, Group VI Phospholipases A2 genetics, Iron metabolism, Mutation, Neurodegenerative Diseases genetics
- Abstract
There is a wide variety of genetic and sporadic causes for neurodegenerative disorders with apparent brain iron accumulation on magnetic resonance imaging. Rare recessive causes include PLA2G6 mutations (infantile neuroaxonal dystrophy), and mutations of ATP13A2 (Kufor Rakeb syndrome) and FA2H. A variety of sporadic neurological disorders can present brain iron accumulation on imaging, including multiple sclerosis and neurological manifestations of HIV infection. The relevant clinical and imaging features will be discussed.
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- 2012
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3. Neurodegeneration with brain iron accumulation.
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McNeill A and Chinnery PF
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- Brain pathology, Ceruloplasmin deficiency, Ceruloplasmin genetics, Ceruloplasmin metabolism, Humans, Iron Metabolism Disorders diagnosis, Iron Metabolism Disorders genetics, Iron Metabolism Disorders metabolism, Magnetic Resonance Imaging methods, Neuroaxonal Dystrophies diagnosis, Neuroaxonal Dystrophies genetics, Neuroaxonal Dystrophies metabolism, Neurodegenerative Diseases diagnosis, Neurodegenerative Diseases genetics, Neurodegenerative Diseases metabolism, Pantothenate Kinase-Associated Neurodegeneration diagnosis, Pantothenate Kinase-Associated Neurodegeneration genetics, Pantothenate Kinase-Associated Neurodegeneration metabolism, Brain metabolism, Iron metabolism, Neurodegenerative Diseases pathology
- Abstract
Neurodegenerative disorders with brain iron accumulation (NBIA) are a clinically and genetically heterogeneous group of conditions in which there is neurodegeneration accompanied by elevated levels of brain iron. NBIA is frequently of genetic etiology, but may be secondary to an acquired systemic or neurological disease. Mutations in the ferritin light chain cause an adult-onset autosomal-dominant choreiform movement disorder termed neuroferritinopathy. Homozygous mutations in the ceruloplasmin gene cause aceruloplasminemia, which is characterized by the triad of diabetes, retinopathy, and a neurological disorder in mid adulthood. Mutations in pantothenate kinase 2 (PANK2) and phospholipase A2 (PLA2G6) cause recessive, childhood-onset extrapyramidal disorders termed pantothenate kinase-associated neurodegeneration (PKAN) and infantile neuroaxonal dystrophy (INAD), respectively. There is considerable phenotypic overlap between these conditions. The most useful investigation in suspected NBIA is brain magnetic resonance imaging, which can identify pathological iron deposition and distinguish between genotypes. Iron depletion therapy has been demonstrated to be successful in aceruloplasminemia, but not neuroferritinopathy, PKAN, or INAD. The presentation of NBIA overlaps with the more common adult movement disorders and pediatric neurometabolic conditions, and a high index of suspicion is required to make a correct diagnosis., (Copyright © 2011 Elsevier B.V. All rights reserved.)
- Published
- 2011
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4. Response to: ATP13A2 mutations (PARK9) cause neurodegeneration with brain iron accumulation.
- Author
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McNeill A
- Subjects
- Humans, Brain metabolism, Iron metabolism, Mutation genetics, Nerve Degeneration etiology, Nerve Degeneration genetics, Nerve Degeneration pathology, Proton-Translocating ATPases genetics
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- 2010
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5. Comment on "The codon 129 polymorphism of the prion protein gene influences earlier cognitive performance in Down syndrome subjects"--by Del Bo et al. in J Neurol (2003) 250:688-692.
- Author
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McNeill A
- Subjects
- Amyloid beta-Peptides metabolism, Brain pathology, Brain physiopathology, Codon genetics, Coenzymes genetics, Coenzymes metabolism, Cognition Disorders metabolism, Cognition Disorders pathology, Down Syndrome pathology, Down Syndrome physiopathology, Humans, Immunohistochemistry, Middle Aged, Oxidative Stress genetics, Plaque, Amyloid metabolism, Plaque, Amyloid pathology, PrPC Proteins metabolism, Superoxide Dismutase metabolism, Superoxide Dismutase-1, Brain metabolism, Cognition Disorders genetics, Down Syndrome genetics, Polymorphism, Genetic genetics, PrPC Proteins genetics
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- 2004
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6. Genome-wide meta-analysis identifies six novel loci associated with habitual coffee consumption
- Author
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Consortium, Coffee and Caffeine Genetics, Cornelis, Marilyn C, Renstrom, Frida, Rasheed, Asif, Mason, Marc A, Zonderman, Alan B, Franke, Lude, Kristal, Bruce S, Consortium, International Parkinson’s Disease Genomics, Consortium, North American Brain Expression, Consortium, UK Brain Expression, Karjalainen, Juha, Reed, Danielle R, Ngwa, Julius S, Westra, Harm-Jan, Evans, Michele K, Saleheen, Danish, Harris, Tamara B, Dedoussis, George, Curhan, Gary, Stumvoll, Michael, Beilby, John, Pasquale, Louis R, Feenstra, Bjarke, Huikari, Ville, Bandinelli, Stefania, Ordovas, Jose M, Chan, Andrew T, Peters, Ulrike, Ohlsson, Claes, Gieger, Christian, Martin, Nicholas G, Waldenberger, Melanie, Siscovick, David S, Raitakari, Olli, Cavadino, Alana, Eriksson, Johan G, Mitchell, Paul, Hunter, David J, Kraft, Peter, Rimm, Eric B, Boomsma, Dorret I, Borecki, Ingrid B, Loos, Ruth Jf, Wareham, Nicholas J, Vollenweider, Peter, Nolte, Ilja M, Caporaso, Neil, Grabe, Hans Jörgen, Neuhouser, Marian L, Wolffenbuttel, Bruce Hr, Hu, Frank B, Hyppönen, Elina, Järvelin, Marjo-Riitta, Cupples, L Adrienne, Franks, Paul W, Ridker, Paul M, Teumer, Alexander, van Duijn, Cornelia M, Heiss, Gerardo, Metspalu, Andres, North, Kari E, Ingelsson, Erik, Nettleton, Jennifer A, van Dam, Rob M, Chasman, Daniel I, Nalls, Michael A, Plagnol, Vincent, Yu, Kai, Hernandez, Dena G, Sharma, Manu, Sheerin, Una-Marie, Saad, Mohamad, Simón-Sánchez, Javier, Schulte, Claudia, Lesage, Suzanne, Sveinbjörnsdóttir, Sigurlaug, Arepalli, Sampath, Barker, Roger, Marques-Vidal, Pedro, Ben-Shlomo, Yoav, Berendse, Henk W, Berg, Daniela, Bhatia, Kailash, de Bie, Rob M A, Biffi, Alessandro, Bloem, Bas, Bochdanovits, Zoltan, Bonin, Michael, Bras, M., Rawal, Rajesh, Brockmann, Kathrin, Brooks, Janet, Burn, David J, Charlesworth, Gavin, Chen, Honglei, Chinnery, Patrick F, Chong, Sean, Clarke, Carl E, Cookson, Mark R, Cooper, J Mark, Manichaikul, Ani, Corvol, Jean Christophe, Counsell, Carl, Damier, Philippe, Dartigues, Jean-François, Deloukas, Panos, Deuschl, Günther, Dexter, David T, van Dijk, Karin D, Dillman, Allissa, Durif, Frank, Byrne, Enda M, Wojczynski, Mary K, Dürr, Alexandra, Edkins, Sarah, Evans, Jonathan R, Foltynie, Thomas, Dong, Jing, Gardner, Michelle, Gibbs, J Raphael, Goate, Alison, Gray, Emma, Guerreiro, Rita, Vink, Jacqueline M, Harris, Clare, van Hilten, Jacobus J, Hofman, Albert, Hollenbeck, Albert, Holton, Janice, Hu, Michele, Huang, Xuemei, Hershey, Milton S, Wurster, Isabel, Mätzler, Walter, Zhao, Jing Hua, Hudson, Gavin, Hunt, Sarah E, Huttenlocher, Johanna, Illig, Thomas, München, Helmholtz Zentrum, Jónsson, Pálmi V, Lambert, Jean-Charles, Langford, Cordelia, Lees, Andrew, Lichtner, Peter, Burlutsky, George, Limousin, Patricia, Lopez, Grisel, Lorenz, Delia, McNeill, Alisdair, Moorby, Catriona, Moore, Matthew, Morris, Huw R, Morrison, Karen E, O' Sullivan, Sean S, Lahti, Jari, Pearson, Justin, Perlmutter, Joel S, Pétursson, Hjörvar, Pollak, Pierre, Potter, Simon, Ravina, Bernard, Revesz, Tamas, Riess, Olaf, Rivadeneira, Fernando, Rizzu, Patrizia, Mikkilä, Vera, Ryten, Mina, Sawcer, Stephen, Schapira, Anthony, Scheffer, Hans, Shaw, Karen, Sidransky, Ellen, Smith, Colin, Spencer, Chris C A, Stefánsson, Hreinn, Bettella, Francesco, Lemaitre, Rozenn N, Stockton, Joanna D, Strange, Amy, Talbot, Kevin, Tanner, M., Tashakkori-Ghanbaria, Avazeh, Tison, François, Trabzuni, Daniah, Traynor, Bryan J, Uitterlinden, André G, Velseboer, Daan, Eriksson, Joel, Vidailhet, Marie, Walker, Robert, van de Warrenburg, Bart, Wickremaratchi, Mirdhu, Williams, Nigel, Williams-Gray, Caroline H, Winder-Rhodes, Sophie, Stefánsson, Kári, Martinez, Maria, Sabatier, Paul, Musani, Solomon K, Wood, Nicholas W, Hardy, John, Heutink, Peter, Brice, Alexis, Gasser, Thomas, Singleton, Andrew B, Singleton, Andrew, Cookson, Mark, Hernandez, Dena, Tanaka, Toshiko, Nalls, Michael, Zonderman, Alan, Ferrucci, Luigi, Johnson, Robert, Longo, Dan, O'Brien, Richard, Traynor, Bryan, Troncoso, Juan, Esko, Tõnu, Geller, Frank, van der Brug, Marcel, Zielke, Ronald, Weale, Michael, Ramasamy, Adaikalavan, Box, P. O., Luan, Jian'an, Hui, Jennie, Mägi, Reedik, Dimitriou, Maria, Garcia, Melissa E, Ho, Weang-Kee, Wright, Margaret J, Rose, Lynda M, Magnusson, Patrik Ke, Pedersen, Nancy L, Couper, David, Oostra, Ben A, Ikram, Mohammad Arfan, Tiemeier, Henning W, Uitterlinden, Andre G, van Rooij, Frank Ja, Barroso, Inês, Johansson, Ingegerd, Ganna, Andrea, Xue, Luting, Kaakinen, Marika, Milani, Lili, Power, Chris, Snieder, Harold, Stolk, Ronald P, Baumeister, Sebastian E, Biffar, Reiner, Gu, Fangyi, Bastardot, François, Paynter, Nina, Kutalik, Zoltán, Jacobs, David R, Forouhi, Nita G, Mihailov, Evelin, Lind, Lars, Lindgren, Cecilia, Michaëlsson, Karl, Morris, Andrew, Jensen, Majken, Khaw, Kay-Tee, Monda, Keri L, Luben, Robert N, Wang, Jie Jin, Männistö, Satu, Perälä, Mia-Maria, Kähönen, Mika, Lehtimäki, Terho, Viikari, Jorma, Mozaffarian, Dariush, Mukamal, Kenneth, Psaty, Bruce M, Amin, Najaf, Döring, Angela, Heath, Andrew C, Montgomery, Grant W, Dahmen, Norbert, Carithers, Teresa, Tucker, Katherine L, Boyd, Heather A, Melbye, Mads, Treur, Jorien L, Fischer, Krista, Mellström, Dan, Hottenga, Jouke Jan, Prokopenko, Inga, Tönjes, Anke, Kanoni, Stavroula, Lorentzon, Mattias, Houston, Denise K, Liu, Yongmei, Danesh, John, Biological Psychology, Nutrition and Health, Neuroscience Campus Amsterdam - Neurobiology of Mental Health, The, Coffee, Cornelis, MC, Byrne, Enda, Esko, Tonu, Nalls, MA, Hyppönen, Elina, Chasman, DI, The Coffee and Caffeine Genetics Consortium, International Parkinson's Disease Genomics Consortium (IPDGC), UK Brain Expression Consortium (UKBEC), North American Brain Expression Consortium (NABEC), Epidemiology, Surgery, Public Health, Cell biology, Hematology, Clinical Genetics, Internal Medicine, Life Course Epidemiology (LCE), Lifestyle Medicine (LM), Groningen Institute for Gastro Intestinal Genetics and Immunology (3GI), Center for Liver, Digestive and Metabolic Diseases (CLDM), Stem Cell Aging Leukemia and Lymphoma (SALL), ANS - Amsterdam Neuroscience, Neurology, Graduate School, Pediatric surgery, VU University medical center, NCA - neurodegeneration, Human genetics, NCA - Brain mechanisms in health and disease, and NCA - Neurobiology of mental health
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INVOLVEMENT ,Netherlands Twin Register (NTR) ,GCKR protein, human ,PROTEIN ,Genome-wide association study ,VARIANTS ,genetics [Brain-Derived Neurotrophic Factor] ,chemistry.chemical_compound ,0302 clinical medicine ,Polymorphism (computer science) ,genetics [Adaptor Proteins, Signal Transducing] ,BINDING ,BRAIN ,Genetics ,0303 health sciences ,Basic Helix-Loop-Helix Leucine Zipper Transcription Factors ,Disorders of movement Donders Center for Medical Neuroscience [Radboudumc 3] ,3. Good health ,Psychiatry and Mental health ,Phenotype ,genetics [Polymorphism, Single Nucleotide] ,genetics [Cytochrome P-450 CYP1A2] ,Caffeine ,CAFFEINE ,Single-nucleotide polymorphism ,Biology ,Article ,03 medical and health sciences ,Cellular and Molecular Neuroscience ,SDG 3 - Good Health and Well-being ,Cytochrome P-450 CYP1A2 ,SNP ,Humans ,ddc:610 ,Allele ,genetics [Basic Helix-Loop-Helix Leucine Zipper Transcription Factors] ,Molecular Biology ,030304 developmental biology ,Adaptor Proteins, Signal Transducing ,MLXIPL protein, human ,RECEPTOR ,Brain-Derived Neurotrophic Factor ,Coffea ,ta1182 ,Feeding Behavior ,biology.organism_classification ,ta3124 ,BDNF ,chemistry ,Behavioral medicine ,Developmental Psychopathology ,030217 neurology & neurosurgery ,GLUCOKINASE ,metabolism [Coffea] ,Genome-Wide Association Study - Abstract
Contains fulltext : 155360.pdf (Publisher’s version ) (Closed access) Coffee, a major dietary source of caffeine, is among the most widely consumed beverages in the world and has received considerable attention regarding health risks and benefits. We conducted a genome-wide (GW) meta-analysis of predominately regular-type coffee consumption (cups per day) among up to 91,462 coffee consumers of European ancestry with top single-nucleotide polymorphisms (SNPs) followed-up in ~30 062 and 7964 coffee consumers of European and African-American ancestry, respectively. Studies from both stages were combined in a trans-ethnic meta-analysis. Confirmed loci were examined for putative functional and biological relevance. Eight loci, including six novel loci, met GW significance (log10Bayes factor (BF)>5.64) with per-allele effect sizes of 0.03-0.14 cups per day. Six are located in or near genes potentially involved in pharmacokinetics (ABCG2, AHR, POR and CYP1A2) and pharmacodynamics (BDNF and SLC6A4) of caffeine. Two map to GCKR and MLXIPL genes related to metabolic traits but lacking known roles in coffee consumption. Enhancer and promoter histone marks populate the regions of many confirmed loci and several potential regulatory SNPs are highly correlated with the lead SNP of each. SNP alleles near GCKR, MLXIPL, BDNF and CYP1A2 that were associated with higher coffee consumption have previously been associated with smoking initiation, higher adiposity and fasting insulin and glucose but lower blood pressure and favorable lipid, inflammatory and liver enzyme profiles (P
- Published
- 2015
7. SLC12A2 variants cause a neurodevelopmental disorder or cochleovestibular defect.
- Author
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McNeill, Alisdair, Iovino, Emanuela, Mansard, Luke, Vache, Christel, Baux, David, Bedoukian, Emma, Cox, Helen, Dean, John, Goudie, David, Kumar, Ajith, Newbury-Ecob, Ruth, Fallerini, Chiara, Renieri, Alessandra, Lopergolo, Diego, Mari, Francesca, Blanchet, Catherine, Willems, Marjolaine, Roux, Anne-Francoise, Pippucci, Tommaso, and Delpire, Eric
- Subjects
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HEARING disorders , *XENOPUS laevis , *NEUROGLIA , *CELL analysis , *DEVELOPMENTAL delay , *VESTIBULAR apparatus diseases - Abstract
The SLC12 gene family consists of SLC12A1-SLC12A9, encoding electroneutral cation-coupled chloride co-transporters. SCL12A2 has been shown to play a role in corticogenesis and therefore represents a strong candidate neurodevelopmental disorder gene. Through trio exome sequencing we identified de novo mutations in SLC12A2 in six children with neurodevelopmental disorders. All had developmental delay or intellectual disability ranging from mild to severe. Two had sensorineural deafness. We also identified SLC12A2 variants in three individuals with non-syndromic bilateral sensorineural hearing loss and vestibular areflexia. The SLC12A2 de novo mutation rate was demonstrated to be significantly elevated in the deciphering developmental disorders cohort. All tested variants were shown to reduce co-transporter function in Xenopus laevis oocytes. Analysis of SLC12A2 expression in foetal brain at 16-18 weeks post-conception revealed high expression in radial glial cells, compatible with a role in neurogenesis. Gene co-expression analysis in cells robustly expressing SLC12A2 at 16-18 weeks post-conception identified a transcriptomic programme associated with active neurogenesis. We identify SLC12A2 de novo mutations as the cause of a novel neurodevelopmental disorder and bilateral non-syndromic sensorineural hearing loss and provide further data supporting a role for this gene in human neurodevelopment. [ABSTRACT FROM AUTHOR]
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- 2020
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8. Web-Based Genome-Wide Association Study Identifies Two Novel Loci and a Substantial Genetic Component for Parkinson's Disease
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Consortium, International Parkinson's Disease Genomics, 2, Wellcome Trust Case Control Consortium, Schulte, Claudia, Sawcer, Stephen, Schapira, Anthony, Scheffer, Hans, Shaw, Karen, Shoulson, Ira, Sidransky, Ellen, de Silva, Rohan, Smith, Colin, Spencer, Chris C A, Stefánsson, Hreinn, Lesage, Suzanne, Steinberg, Stacy, Stockton, Joanna D, Strange, Amy, Su, Zhan, Talbot, Kevin, Tanner, Carlie M, Tashakkori-Ghanbaria, Avazeh, Tison, François, Trabzuni, Daniah, Traynor, Bryan J, Sveinbjörnsdóttir, Sigurlaug, Uitterlinden, André G, Vandrovcova, Jana, Velseboer, Daan, Vidailhet, Marie, Vukcevic, Damjan, Walker, Robert, van de Warrenburg, Bart, Weale, Michael E, Williams, Nigel, Williams-Gray, Caroline H, Amouyel, Philippe, Wickremaratchi, Mirdhu, Winder-Rhodes, Sophie, Stefánsson, Kári, Martinez, Maria, Donnelly, Peter, Singleton, Andrew B, Hardy, John, Heutink, Peter, Brice, Alexis, Gasser, Thomas, Arepalli, Sampath, Wood, Nicholas W, Band, Gavin, Barker, Roger A, Bellinguez, Céline, Ben-Shlomo, Yoav, Berendse, Henk W, Plagnol, Vincent, Berg, Daniela, Bhatia, Kailash, de Bie, Rob M A, Biffi, Alessandro, Bloem, Bas, Bochdanovits, Zoltan, Bonin, Michael, Brockmann, Kathrin, Brooks, Janet, Burn, David J, Nalls, Michael A, Charlesworth, Gavin, Chen, Honglei, Chinnery, Patrick F, Chong, Sean, Clarke, Carl E, Cookson, Mark R, Cooper, J Mark, Corvol, Jean Christophe, Counsell, Carl, Damier, Philippe, Bras, Jose M, Dartigues, Jean-François, Deloukas, Panos, Deuschl, Günther, Dexter, David T, van Dijk, Karin D, Dillman, Allissa, Durif, Frank, Dürr, Alexandra, Edkins, Sarah, Evans, Jonathan R, Hernandez, Dena G, Foltynie, Thomas, Freeman, Colin, Gao, Jianjun, Gardner, Michelle, Gibbs, J Raphael, Goate, Alison, Gray, Emma, Guerreiro, Rita, Gústafsson, Ómar, Harris, Clare, Sharma, Manu, Hellenthal, Garrett, van Hilten, Jacobus J, Hofman, Albert, Hollenbeck, Albert, Holton, Janice, Hu, Michele, Huang, Xuemei, Huber, Heiko, Hudson, Gavin, Hunt, Sarah E, Sheerin, Una-Marie, Huttenlocher, Johanna, Illig, Thomas, Jónsson, Pálmi V, Langford, Cordelia, Lees, Andrew, Lichtner, Peter, Limousin, Patricia, Lopez, Grisel, Lorenz, Delia, McNeill, Alisdair, Saad, Mohamad, Moorby, Catriona, Moore, Matthew, Morris, Huw, Morrison, Karen E, Mudanohwo, Ese, O'Sullivan, Sean S, Pearson, Justin, Pearson, Richard, Perlmutter, Joel S, Pétursson, Hjörvar, Simón-Sánchez, Javier, Pirinen, Matti, Pollak, Pierre, Post, Bart, Potter, Simon, Ravina, Bernard, Revesz, Tamas, Riess, Olaf, Rivadeneira, Fernando, Rizzu, Patrizia, Ryten, Mina, Neuroscience Campus Amsterdam - Neurodegeneration, Pollak, Pierre, Human genetics, Neurology, Anatomy and neurosciences, NCA - Neurodegeneration, ANS - Amsterdam Neuroscience, ACS - Amsterdam Cardiovascular Sciences, and Graduate School
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Cancer Research ,Candidate gene ,Genome-wide association study ,QH426-470 ,0302 clinical medicine ,genetics [Parkinson Disease] ,Parkinson Disease/genetics ,Genetics (clinical) ,Genetics ,0303 health sciences ,education.field_of_study ,Brain ,Parkinson Disease ,Polymorphism, Single Nucleotide/genetics ,Genetic Loci/genetics ,genetics [Polymorphism, Single Nucleotide] ,Research Article ,Population ,Single-nucleotide polymorphism ,genetics [Genetic Loci] ,Biology ,Polymorphism, Single Nucleotide ,Risk Assessment ,03 medical and health sciences ,Genome-Wide Association Studies ,Brain/metabolism ,Humans ,Genetic Predisposition to Disease ,ddc:610 ,education ,Molecular Biology ,Genotyping ,QH426 ,Ecology, Evolution, Behavior and Systematics ,030304 developmental biology ,Genetic association ,GPNMB ,Gene Expression Profiling ,Haplotype ,DNA Methylation ,ddc:616.8 ,Gene Expression Regulation ,metabolism [Brain] ,Genetic Loci ,Genetics of Disease ,RC0321 ,030217 neurology & neurosurgery ,Neuroscience ,Genome-Wide Association Study - Abstract
A previous genome-wide association (GWA) meta-analysis of 12,386 PD cases and 21,026 controls conducted by the International Parkinson's Disease Genomics Consortium (IPDGC) discovered or confirmed 11 Parkinson's disease (PD) loci. This first analysis of the two-stage IPDGC study focused on the set of loci that passed genome-wide significance in the first stage GWA scan. However, the second stage genotyping array, the ImmunoChip, included a larger set of 1,920 SNPs selected on the basis of the GWA analysis. Here, we analyzed this set of 1,920 SNPs, and we identified five additional PD risk loci (combined p, Author Summary This paper describes the largest case-control analysis of Parkinson's disease to date, with a combined sample set of over 12,000 cases and 21,000 controls. After combining our findings with an independent replication dataset of more than 3,000 cases and 29,000 controls, we found five additional PD risk loci in addition to the 11 loci previously identified in earlier consortium efforts. This successful study further demonstrates the power of the GWA scan experimental design to find new loci contributing to disease risk, even in the context of complex disorders like Parkinson's disease. These new findings provide insights into the etiology of PD and will promote a better understanding of its pathogenesis.
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- 2011
9. MYT1L mutations cause intellectual disability and variable obesity by dysregulating gene expression and development of the neuroendocrine hypothalamus.
- Author
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Blanchet, Patricia, Bebin, Martina, Bruet, Shaam, Cooper, Gregory M., Thompson, Michelle L., Duban-Bedu, Benedicte, Gerard, Benedicte, Piton, Amelie, Suckno, Sylvie, Deshpande, Charu, Clowes, Virginia, Vogt, Julie, Turnpenny, Peter, Williamson, Michael P., Alembik, Yves, null, null, Glasgow, Eric, and McNeill, Alisdair
- Subjects
CHROMOSOME abnormalities ,HUMAN chromosome abnormalities ,SINGLE nucleotide polymorphisms ,PHENOTYPES ,EXOMES ,GENE expression - Abstract
Deletions at chromosome 2p25.3 are associated with a syndrome consisting of intellectual disability and obesity. The smallest region of overlap for deletions at 2p25.3 contains PXDN and MYT1L. MYT1L is expressed only within the brain in humans. We hypothesized that single nucleotide variants (SNVs) in MYT1L would cause a phenotype resembling deletion at 2p25.3. To examine this we sought MYT1L SNVs in exome sequencing data from 4, 296 parent-child trios. Further variants were identified through a genematcher-facilitated collaboration. We report 9 patients with MYT1L SNVs (4 loss of function and 5 missense). The phenotype of SNV carriers overlapped with that of 2p25.3 deletion carriers. To identify the transcriptomic consequences of MYT1L loss of function we used CRISPR-Cas9 to create a knockout cell line. Gene Ontology analysis in knockout cells demonstrated altered expression of genes that regulate gene expression and that are localized to the nucleus. These differentially expressed genes were enriched for OMIM disease ontology terms “mental retardation”. To study the developmental effects of MYT1L loss of function we created a zebrafish knockdown using morpholinos. Knockdown zebrafish manifested loss of oxytocin expression in the preoptic neuroendocrine area. This study demonstrates that MYT1L variants are associated with syndromic obesity in humans. The mechanism is related to dysregulated expression of neurodevelopmental genes and altered development of the neuroendocrine hypothalamus. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
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