目前,我国试管婴儿技术的成功率平均仅为50%多,最大瓶颈就在于产前染色体异常的筛查。记者昨日获悉,今年3月成立的染色体芯片产前诊断联合实验室(CMA),利用针对中国人群定制的染色体芯片,能够检测出在常规染色体检测中显微镜下无法识别的基因缺陷,可筛查出200多种已知的染色体微缺失或微重复引起的疾病。这一技术不仅可通过产前诊 At present, the success rate of IVF in our country is only about 50% on average. The biggest bottleneck lies in the screening of prenatal chromosome abnormalities. The reporter learned yesterday that the CMA, which was established in March this year, can detect gene defects that can not be identified under the microscope by conventional chromosome tests by using a custom-made chromosome chip targeting at the Chinese population. Over 200 known diseases caused by chromosomal microdeletion or microdissection. This technique is not only available through prenatal diagnosis