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  • Title: [Efficiency of multiplex ligation-dependent probe amplification combined with short tandem repeat linkage analysis for the prenatal diagnosis for Duchenne muscular dystrophy].
    Author: Li T, Wu D, Hou QF, Wang L, Guo QN, Kang B, Liu HY, Yang K, Ding XB, Liao SX.
    Journal: Zhonghua Yi Xue Yi Chuan Xue Za Zhi; 2013 Feb; 30(1):40-4. PubMed ID: 23450477.
    Abstract:
    OBJECTIVE: To investigate the efficiency of multiplex ligation-dependent probe amplification (MLPA) combined with short tandem repeat (STR) linkage analysis for the prenatal diagnosis for Duchenne muscular dystrophy (DMD). METHODS: Gender of the fetus was first determined by the presence of Y chromosome sex-determining gene (SRY). Subsequently, combined MLPA and STR linkage analysis were applied for the probands, pregnant women and fetuses in 45 affected families. RESULTS: Among the 45 families, 31 SRY-positive fetuses were identified, among whom six were diagnosed with DMD. For 14 SRY-negative fetuses, four were diagnosed as carriers. The remainders were normal. CONCLUSION: MLPA can detect mutations in the exons of dystrophin gene, whilst STR linkage analysis can determine whether the fetus has inherited the maternal X chromosome bearing the mutant gene. As the result, the method can detect affected fetuses in which no exonic mutations are detected with MLPA. By combining the two methods, the diagnostic rate for DMD can be greatly improved.
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