monosomy 21
Monosomy 21 is a chromosomal anomaly characterized by the loss of variable portions of a segment of the long arm of chromosome 21 that leads to an increased risk of birth defects, developmental delay and intellectual deficit.
MONDO:0020226
obsolete chromosomal anomaly with cataract (obsolete MONDO:0020226)
excluded_subClassOf
MONDO:0700124
chromosome 21 disorder
is_a
21q deletion
related
21q deletion syndrome
exact
21q monosomy
related
21q- syndrome
exact
chromosome 21q deletion
related
deletion 21q
related
monosomy 21q
related
monosomy type 21
exact
partial 21q monosomy
exact
partial monosomy 21q
related