摘要本文报告了1例超声提示胎儿四肢异常及超声软指标异常、诊断为杆状体肌病的病例。孕妇孕1产0，因孕13周 +5超声提示胎儿颈项透明层增厚进行产前诊断。孕18周 +2行羊水细胞染色体核型分析、单核苷酸多态性微阵列检测等未见明显异常。孕23、28周超声复查仍可见颈背皮肤皱褶增厚和四肢异常。该孕妇选择于孕29周 +2引产。对引产胎儿及家系全外显子组测序（whole exon sequencing，WES），结果WES检出 KLHL40基因c.602G>A（p.W201*）和c.1516A>C（p.T506P）复合杂合变异，导致杆状体肌病8型，分别遗传自母亲和父亲。

abstractsWe reported a fetus with limb abnormalities and abnormal ultrasound soft markers diagnosed with nemaline myopathy. A pregnant woman (G1P0) underwent amniocentesis at 18 +2 gestational weeks due to thickened nuchal translucency suggested by ultrasound at 13 +5 gestational weeks. Karyotyping and single nucleotide polymorphism array of the amniotic fluid cells showed no fetal abnormalities. However, ultrasonographic reexaminations at 23, 28, and 28 +1 weeks indicated limb abnormalities and thickened nuchal fold, and the pregnant woman chose to terminate the pregnancy at 29 +2 gestational weeks. Whole exome sequencing showed compound heterozygous mutations of c.602G>A (p.W201*) and c.1516A>C (p.T506P) in the KLHL40 gene inherited from the mother and the father, respectively, resulting in nemaline myopathy type 8.