A 42-year-old member asked:
what is patau syndrome, a trisomy?
1 doctor answer
Dr. Danae Steele answered
30 years experience Maternal-Fetal Medicine
Trisomy 13: Patau syndrome is also called trisomy 13. It occurs when a baby has 3 copies of the number 13 chromosome instead of the usual 2 copies. It causes severe physical problems and most babies with trisomy 13 die before birth or within the first year after birth. It usually happens because of an accident which occurs when the egg is fertilized, and occurs more commonly as mothers get older.
Answered on Mar 18, 2015
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