摘要报道2020年3月河南中医药大学第一附属医院收治的4号染色体母源单亲二倍体引起肢带型肌营养不良2S型(LGMD2S)1例。患儿，女，9个月4 d，以婴儿早期患细菌性脑膜炎后发育落后，婴儿期肌力下降伴肌酶、肝酶增高为主要临床表现。家系遗传学分析显示，患儿4号染色体为母源单亲二倍体，且 TRAPPC11基因存在c.1066T>G(p.Y356D)纯合可能致病性变异，变异来自患儿母亲。根据患儿临床表现及基因检测结果，最终诊断为LGMD2S。LGMD2S是由 TRAPPC11基因致病性变异所致的一种罕见的常染色体隐性遗传病，以儿童期起病的近端肢体无力、运动、智力发育落后、癫痫发作、运动障碍、血清肌酸激酶轻至中度升高及肌肉组织活检显示肌营养不良样病理改变为特征。

abstractsA case of limb girdle muscular dystrophy type 2S (LGMD2S) caused by maternal uniparental disomy on chromosome 4 at the First Affiliated Hospital of Henan University of Chinese Medicine in March 2020 was reported.The female child, aged 9 months and 4 days, presented with developmental delay after bacterial meningitis in early infancy, decreased muscle strength in infancy and increased muscle and liver enzymes.Family genetic analysis showed that the child′s monodiploid in chromosome 4 was maternal origin, and the homozygous c. 1066T > G (p.Y356D) of TRAPPC11 gene may had pathogenic variation, which came from the child′s mother.The final diagnosis of LGMD2S was made according to the clinical manifestations and gene test results.LGMD2S is a rare autosomal recessive disease caused by the pathogenic variation of TRAPPC11 gene.Its clinical characteristics include proximal limb weakness, motor and intellectual retardation, seizures, motor disorders, elevated serum creatine kinase and muscular dystrophy like pathological changes in children.