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利用人心室肌球蛋白轻链ｌｃＤＮＡ探针对先天性心脏病患者家系心室肌球蛋白轻链ｌ基因进行了限制酶切片段长度多态性分析。从患有４种不同先天性心脏病的９个家系４０名成员和１３例无血缘关系患者的分析结果，发现行２个家系呈现限制性酶切片段多态性，但这种限制性酶切片段多态性似与先天性心脏病的发生没有联系。
Using human ventricular myoglobin light chain lcDNA probe of congenital heart disease patients with family ventricular myosin light chain l gene restriction fragment length polymorphism analysis. Analysis of 40 families of 9 pedigrees and 13 unrelated patients with 4 different types of congenital heart disease found that the two families showed restriction fragment polymorphisms, but this restriction enzyme digestion Fragment polymorphism seems to be associated with the occurrence of congenital heart disease.