PMID- 33048237 OWN - NLM STAT- MEDLINE DCOM- 20210330 LR - 20240226 IS - 1432-1203 (Electronic) IS - 0340-6717 (Linking) VI - 140 IP - 4 DP - 2021 Apr TI - Biallelic loss-of-function variants in NEMF cause central nervous system impairment and axonal polyneuropathy. PG - 579-592 LID - 10.1007/s00439-020-02226-3 [doi] AB - We aimed to detect the causative gene in five unrelated families with recessive inheritance pattern neurological disorders involving the central nervous system, and the potential function of the NEMF gene in the central nervous system. Exome sequencing (ES) was applied to all families and linkage analysis was performed on family 1. A minigene assay was used to validate the splicing effect of the relevant discovered variants. Immunofluorescence (IF) experiment was performed to investigate the role of the causative gene in neuron development. The large consanguineous family confirms the phenotype-causative relationship with homozygous frameshift variant (NM_004713.6:c.2618del) as revealed by ES. Linkage analysis of the family showed a significant single-point LOD of 4.5 locus. Through collaboration in GeneMatcher, four additional unrelated families' likely pathogenic NEMF variants for a spectrum of central neurological disorders, two homozygous splice-site variants (NM_004713.6:c.574+1G>T and NM_004713.6:c.807-2A>C) and a homozygous frameshift variant (NM_004713.6: c.1234_1235insC) were subsequently identified and segregated with all affected individuals. We further revealed that knockdown (KD) of Nemf leads to impairment of axonal outgrowth and synapse development in cultured mouse primary cortical neurons. Our study demonstrates that disease-causing biallelic NEMF variants result in central nervous system impairment and other variable features. NEMF is an important player in mammalian neuron development. FAU - Ahmed, Ashfaque AU - Ahmed A AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Wang, Meng AU - Wang M AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Bergant, Gaber AU - Bergant G AD - Clinical Institute of Medical Genetics, University Medical Centre Ljubljana, Ljubljana, Slovenia. kc39369@kclj.si. FAU - Maroofian, Reza AU - Maroofian R AD - Department of Neuromuscular Disorders, UCL Queen Square Institute of Neurology, London, WC1N 3BG, UK. FAU - Zhao, Rongjuan AU - Zhao R AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Alfadhel, Majid AU - Alfadhel M AD - Division of Genetics, Department of Pediatrics, King Abdulaziz Medical City, Ministry of National Guard-Health Affairs (MNGHA), Riyadh, Saudi Arabia. AD - College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard-Health Affairs (MNGHA), Riyadh, Saudi Arabia. AD - Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard-Health Affairs (MNGHA), Riyadh, Saudi Arabia. FAU - Nashabat, Marwan AU - Nashabat M AD - Division of Genetics, Department of Pediatrics, King Abdulaziz Medical City, Ministry of National Guard-Health Affairs (MNGHA), Riyadh, Saudi Arabia. AD - Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard-Health Affairs (MNGHA), Riyadh, Saudi Arabia. FAU - AlRifai, Muhammad Talal AU - AlRifai MT AD - Division of Genetics, Department of Pediatrics, King Abdulaziz Medical City, Ministry of National Guard-Health Affairs (MNGHA), Riyadh, Saudi Arabia. AD - College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard-Health Affairs (MNGHA), Riyadh, Saudi Arabia. FAU - Eyaid, Wafaa AU - Eyaid W AD - Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), Ministry of National Guard-Health Affairs (MNGHA), Riyadh, Saudi Arabia. AD - King Abdullah International Medical Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard Health Affairs (MNGHA), Riyadh, Saudi Arabia. AD - Genetics Division, Department of Pediatrics, King Abdullah International Medical Research Centre (KAIMRC), King Saud Bin Abdulaziz University for Health Science, King Abdulaziz Medical City, Ministry of National Guard-Health Affairs (MNGHA), Riyadh, Saudi Arabia. FAU - Alswaid, Abdulrahman AU - Alswaid A AD - Department of Pediatrics, King Abdulaziz Medical City, Riyadh, Saudi Arabia. FAU - Beetz, Christian AU - Beetz C AD - Centogene AG, Am Strande 7, 18057, Rostock, Germany. FAU - Qin, Yan AU - Qin Y AD - Department of Neurology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China. FAU - Zhu, Tengfei AU - Zhu T AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Tian, Qi AU - Tian Q AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Xia, Lu AU - Xia L AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Wu, Huidan AU - Wu H AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Shen, Lu AU - Shen L AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Dong, Shanshan AU - Dong S AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Yang, Xinyi AU - Yang X AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Liu, Cenying AU - Liu C AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Ma, Linya AU - Ma L AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Zhang, Qiumeng AU - Zhang Q AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Khan, Rizwan AU - Khan R AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Shah, Abid Ali AU - Shah AA AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Guo, Jifeng AU - Guo J AD - Department of Neurology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China. AD - National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, 410008, Hunan, China. FAU - Tang, Beisha AU - Tang B AD - Department of Neurology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China. AD - National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, 410008, Hunan, China. FAU - Leonardis, Lea AU - Leonardis L AD - Institute of Clinical Neurophysiology, University Medical Centre Ljubljana, Ljubljana, Slovenia. AD - Department of Neurology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia. FAU - Writzl, Karin AU - Writzl K AD - Department of Neuromuscular Disorders, UCL Queen Square Institute of Neurology, London, WC1N 3BG, UK. FAU - Peterlin, Borut AU - Peterlin B AD - Department of Neuromuscular Disorders, UCL Queen Square Institute of Neurology, London, WC1N 3BG, UK. FAU - Guo, Hui AU - Guo H AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. AD - Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, Hunan, China. FAU - Malik, Sajid AU - Malik S AD - Human Genetics Program, Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan. malik@qau.edu.pk. FAU - Xia, Kun AU - Xia K AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. xiakun@sklmg.edu.cn. AD - CAS Center for Excellence in Brain Science and Intelligences Technology (CEBSIT), Chinese Academy of Sciences, Shanghai, China. xiakun@sklmg.edu.cn. AD - Hunan Key Laboratory of Molecular Precisional Medicine, Central South University, Changsha, China. xiakun@sklmg.edu.cn. FAU - Hu, Zhengmao AU - Hu Z AUID- ORCID: 0000-0002-3921-8205 AD - Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. huzhengmao@sklmg.edu.cn. AD - Hunan Key Laboratory of Animal Models for Human Diseases, Changsha, Hunan, China. huzhengmao@sklmg.edu.cn. LA - eng GR - 81730036/National Natural Science Foundation of China/ PT - Journal Article DEP - 20201013 PL - Germany TA - Hum Genet JT - Human genetics JID - 7613873 RN - 0 (Antigens, Neoplasm) RN - 0 (NEMF protein, human) RN - 0 (Nucleocytoplasmic Transport Proteins) SB - IM MH - Adolescent MH - Adult MH - Alleles MH - Animals MH - Antigens, Neoplasm/*genetics MH - *Axons MH - Brain/metabolism MH - Cells, Cultured MH - Central Nervous System Diseases/*genetics MH - Consanguinity MH - Female MH - Gene Expression Profiling MH - Genes, Recessive MH - Homozygote MH - Humans MH - *Loss of Function Mutation MH - Male MH - Mice, Inbred C57BL MH - Nucleocytoplasmic Transport Proteins/*genetics MH - Pedigree MH - Polyneuropathies/*genetics MH - RNA-Seq MH - Exome Sequencing MH - Young Adult MH - Mice EDAT- 2020/10/14 06:00 MHDA- 2021/03/31 06:00 CRDT- 2020/10/13 12:13 PHST- 2020/07/15 00:00 [received] PHST- 2020/09/28 00:00 [accepted] PHST- 2020/10/14 06:00 [pubmed] PHST- 2021/03/31 06:00 [medline] PHST- 2020/10/13 12:13 [entrez] AID - 10.1007/s00439-020-02226-3 [pii] AID - 10.1007/s00439-020-02226-3 [doi] PST - ppublish SO - Hum Genet. 2021 Apr;140(4):579-592. doi: 10.1007/s00439-020-02226-3. Epub 2020 Oct 13.