Risk of Recurrence of Fetal Chromosomal Aberrations: Analysis of Trisomy 21, Trisomy 18, Trisomy 13, and 45,X in 1,076 Japanese Mothers

Abstract

The risk of recurrence of trisomy-21 is affected by maternal age and parental germline mosaicism. The risk of recurrence of trisomy-18 or -13 appears to be much lower than that of trisomy-21. Women who give birth to more than 1 offspring with 45,X should be examined for mos 45,X/46,XX.