All Disorders
Common trisomies
COMMON TRISOMIES
Trisomy 21 (Down syndrome)
Down syndrome, also called trisomy 21, is associated with the presence of an extra copy of chromosome 21. It is the most common chromosomal disorder in liveborn children and, although typically random, does occurs more commonly in the offspring of women as they get older.
COMMON TRISOMIES
Trisomy 18 (Edwards syndrome)
Edwards syndrome, also called trisomy 18, is a chromosomal disorder associated with the presence of an extra chromosome 18. It is the second most common autosomal trisomy among liveborn children.
COMMON TRISOMIES
Trisomy 13 (Patau syndrome)
Patau syndrome, also called trisomy 13, is a chromosomal disorder caused by the presence of an extra chromosome 13 in all or some of the cells.