Subject(s)

Down Syndrome/diagnosis , GATA1 Transcription Factor/genetics , Leukemia, Megakaryoblastic, Acute/genetics , Down Syndrome/complications , Down Syndrome/genetics , Humans , In Situ Hybridization, Fluorescence , Infant , Leukemia/etiology , Leukemia/genetics , Leukemia, Megakaryoblastic, Acute/etiology , Mutation , Prognosis , Risk Assessment