fxs
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fxs-
However , since it is unlikely that all of the fragile X patients have been completely accounted for in Japan , it is important that a wide screening for FXS in the MR population be undertaken .
但是要在日本人群中筛查出所有的脆性X综合征病人是不现实的，而在智障人群中展开更大规模的筛查以找出更多病人则显得更加重要。
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Fragile X syndrome ( FXS ) is the most common form of inherited mental retardation after Down syndrome . It affects approximately 1 in 4000 males and 1 in 8000 females in the general population .
脆性X综合征（fragilexsyndrome，FXS）是导致遗传性智力低下的主要原因之一，发病率仅次于先天愚型，在男性中的发病率约为1/4000，在女性中发病率约为1/8000。