WDiGeorge syndrome
W22q11.2 distal deletion syndrome
WAneuploidy
WBeckwith–Wiedemann syndrome
WBreakage-fusion-bridge cycle
WChromosomal translocation
WChromosome abnormality
WDiploid triploid mosaic
WDown syndrome
WIschiopatellar dysplasia
WMicrocephaly albinism digital anomalies syndrome
WPhiladelphia chromosome
WPolysomy
WTrisomy
WVaginal anomalies
WXX male syndrome