ClinGen 遗传性心血管疾病基因编辑专家小组:重新评估肥厚型心肌病相关基因

Sophie Hespe, Amber Waddell, Babken Asatryan, Emma Owens, Courtney Thaxton, Mhy-lanie Adduru, Kailyn Anderson, Emily Brown, Lily Hoffman-Andrews, Elizabeth Jordan, Katherine Josephs, Megan Mayers, Stacey Peters, Fergus Stafford, Richard Douglas Bagnall, Lucas Bronicki, Bert Callewaert, C. Anwar Chahal, Cynthia A. James, Olga Jarinova, Andrew P Landstrom, Elizabeth M. McNally, Brittney Murray, Laura Muiño-Mosquera, Victoria N. Parikh, Chloe Reuter, Roddy Walsh, Bess Wayburn, James Ware, Jodie Ingles
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引用次数: 0

摘要

背景:肥厚型心肌病(HCM)是一种遗传性心脏病,每 500 人中约有 1 人患病,并表现出明显的遗传异质性。之前在 2019 年发表的论文中,对 57 个 HCM 相关基因进行了策划,首次对基因-疾病的有效性进行了系统评估。在此,我们报告了 ClinGen 遗传性心血管疾病基因编辑专家小组(HCVD-GCEP)重新评估之前编辑的和新推测的 HCM 基因临床有效性的工作。方法:利用 ClinGen 系统化基因编辑框架,对涉及左心室肥厚的 HCM 和相关综合征实体的基因-疾病关系进行重新分类。如果以前策划的基因分类不确定,且策划时间为 2-3 年,则将其纳入。对有文献断言为 HCM 的新基因进行初步评估。在有证据的情况下,对现有基因进行新遗传模式的策划。HCVD-GCEP由来自6个国家21个机构的29名成员组成,每月两次电话会议对基因进行整理:结果:31 个基因被重新整合,另有 5 个新的潜在 HCM 相关基因被整合。在重新整合的基因中,17 个(55%)基因改变了分类:1 个有限基因和 4 个有争议基因(从无已知疾病关系)、9 个有争议基因(从有限基因)和 3 个确定基因(从中度基因)。其中,3 个基因(10%)的分类与临床相关,包括 TNNC1,这是确定与 HCM 相关的第 9 个肌节基因。有了新的证据,两个基因的多重遗传模式也得到了验证(TRIM63,常染色体显性遗传有争议,但常染色体隐性遗传为中度遗传;ALPK3,常染色体显性遗传为强性遗传,隐性遗传为确定性遗传)。CSRP3 的遗传模式为半显性(确定性)。九个基因(29%)被降级为有争议的基因,进一步阻碍了这些基因变异的临床报告。最近报道可导致 HCM 的 5 个基因已被归类:RPS6KB1和RBM20(有限)、KLHL24和MT-TI(中度)以及FHOD3(明确):我们报告了 29 个与 HCM 或孤立 LVH 有明确、有力或中度因果关系的基因,包括肌节、肌节相关和综合症。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
ClinGen Hereditary Cardiovascular Disease Gene Curation Expert Panel: Reappraisal of Genes associated with Hypertrophic Cardiomyopathy
Background: Hypertrophic cardiomyopathy (HCM) is an inherited cardiac condition affecting ~1 in 500 and exhibits marked genetic heterogeneity. Previously published in 2019, 57 HCM-associated genes were curated providing the first systematic evaluation of gene-disease validity. Here we report work by the ClinGen Hereditary Cardiovascular Disorders Gene Curation Expert Panel (HCVD-GCEP) to reappraise the clinical validity of previously curated and new putative HCM genes. Methods: The ClinGen systematic gene curation framework was used to re-classify the gene-disease relationships for HCM and related syndromic entities involving left ventricular hypertrophy. Genes previously curated were included if their classification was not definitive, and if the time since curation was >2-3 years. New genes with literature assertions for HCM were included for initial evaluation. Existing genes were curated for new inheritance patterns where evidence existed. Curations were presented on twice monthly calls, with the HCVD-GCEP composed of 29 individuals from 21 institutions across 6 countries. Results: Thirty-one genes were re-curated and an additional 5 new potential HCM-associated genes were curated. Among the re-curated genes, 17 (55%) genes changed classification: 1 limited and 4 disputed (from no known disease relationship), 9 disputed (from limited), and 3 definitive (from moderate). Among these, 3 (10%) genes had a clinically relevant upgrade, including TNNC1, a 9th sarcomere gene with definitive HCM association. With new evidence, two genes were curated for multiple inheritance patterns (TRIM63, disputed for autosomal dominant but moderate for autosomal recessive; ALPK3, strong for autosomal dominant and definitive for recessive). CSRP3 was curated for a semi-dominant mode of inheritance (definitive). Nine (29%) genes were downgraded to disputed, further discouraging clinical reporting of variants in these genes. Five genes recently reported to cause HCM were curated: RPS6KB1 and RBM20 (limited), KLHL24 and MT-TI (moderate), and FHOD3 (definitive). Conclusions: We report 29 genes with definitive, strong or moderate evidence of causation for HCM or isolated LVH, including sarcomere, sarcomere-associated and syndromic conditions.
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