PMID- 34388596 OWN - NLM STAT- MEDLINE DCOM- 20220127 LR - 20221207 IS - 1872-6968 (Electronic) IS - 0303-8467 (Linking) VI - 208 DP - 2021 Sep TI - Whole-exome sequencing and human leukocyte antigen analysis in familial myasthenia gravis with thymoma: Case report and literature review. PG - 106864 LID - S0303-8467(21)00393-0 [pii] LID - 10.1016/j.clineuro.2021.106864 [doi] AB - Myasthenia gravis (MG) is an autoimmune disease characterized by impaired neurotransmission at the neuromuscular junction. MG is generally non-inherited but is rarely inherited. Here, we report two patients with MG in the same pedigree: a 62-year-old Japanese man and his 46-year-old daughter who were positive for anti-acetylcholine receptor antibodies and had thymoma. We performed whole-exome sequencing (WES) and human leukocyte antigen (HLA) analyses to investigate the genetic contribution to familial onset. WES analysis of both patients showed no known variations in candidate genes for familial MG, and HLA analysis failed to detect HLA haplotypes seen in early-onset and late-onset MG. These findings suggest the presence of an unknown genetic background. Previous genetic studies on familial MG have identified ENOX1 and IFNGR1 as candidate genes in patients without thymoma, whereas no studies have identified candidate genes in patients with thymoma. To explore causative genes, it may be necessary to consider whether the genetic background differs between patients with and without thymoma in familial autoimmune MG. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - Nakamura, Yoshitsugu AU - Nakamura Y AD - Department of Internal Medicine IV, Division of Neurology, Osaka Medical and Pharmaceutical University Faculty of Medicine, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan. Electronic address: yoshitsugu.nakamura@ompu.ac.jp. FAU - Sato, Hidenori AU - Sato H AD - Genome Informatics Unit, Institution for Promotion of Medical Science Research, Yamagata University Faculty of Medicine, 2-2 Iida-Nishi, Yamagata 990-9585, Japan. Electronic address: h-satoh@med.id.yamagata-u.ac.jp. FAU - Miyano, Yuki AU - Miyano Y AD - Genome Informatics Unit, Institution for Promotion of Medical Science Research, Yamagata University Faculty of Medicine, 2-2 Iida-Nishi, Yamagata 990-9585, Japan. Electronic address: zeku380@med.id.yamagata-u.ac.jp. FAU - Murakami, Ryoko AU - Murakami R AD - Genome Informatics Unit, Institution for Promotion of Medical Science Research, Yamagata University Faculty of Medicine, 2-2 Iida-Nishi, Yamagata 990-9585, Japan. Electronic address: ryoko_murakami@med.id.yamagata-u.ac.jp. FAU - Motoki, Mikiko AU - Motoki M AD - Department of Internal Medicine IV, Division of Neurology, Osaka Medical and Pharmaceutical University Faculty of Medicine, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan. Electronic address: mikiko.motoki@ompu.ac.jp. FAU - Shigekiyo, Taro AU - Shigekiyo T AD - Department of Internal Medicine IV, Division of Neurology, Osaka Medical and Pharmaceutical University Faculty of Medicine, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan. Electronic address: taro.shigekiyo@ompu.ac.jp. FAU - Sugino, Masakazu AU - Sugino M AD - Division of Neurology, Aino Hospital, 11-18 Takadacho, Ibaraki, Osaka 567-0011, Japan. Electronic address: m-sugino@aino-hp.koshokai.or.jp. FAU - Arawaka, Shigeki AU - Arawaka S AD - Department of Internal Medicine IV, Division of Neurology, Osaka Medical and Pharmaceutical University Faculty of Medicine, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan. Electronic address: shigeki.arawaka@ompu.ac.jp. LA - eng PT - Case Reports PT - Journal Article PT - Review DEP - 20210803 PL - Netherlands TA - Clin Neurol Neurosurg JT - Clinical neurology and neurosurgery JID - 7502039 RN - 0 (Autoantibodies) RN - 0 (HLA Antigens) RN - 0 (Receptors, Cholinergic) SB - IM MH - Autoantibodies MH - Female MH - HLA Antigens/*genetics MH - Humans MH - Male MH - Middle Aged MH - Myasthenia Gravis/*genetics/immunology/pathology MH - Pedigree MH - Receptors, Cholinergic/immunology MH - Thymoma/*genetics/immunology/pathology MH - Thymus Neoplasms/*genetics/immunology/pathology MH - Exome Sequencing OTO - NOTNLM OT - Familial myasthenia gravis OT - Human leukocyte antigen OT - Thymoma OT - Whole-exome sequencing EDAT- 2021/08/14 06:00 MHDA- 2022/01/28 06:00 CRDT- 2021/08/13 20:18 PHST- 2021/02/20 00:00 [received] PHST- 2021/07/17 00:00 [revised] PHST- 2021/07/30 00:00 [accepted] PHST- 2021/08/14 06:00 [pubmed] PHST- 2022/01/28 06:00 [medline] PHST- 2021/08/13 20:18 [entrez] AID - S0303-8467(21)00393-0 [pii] AID - 10.1016/j.clineuro.2021.106864 [doi] PST - ppublish SO - Clin Neurol Neurosurg. 2021 Sep;208:106864. doi: 10.1016/j.clineuro.2021.106864. Epub 2021 Aug 3.