title: Y chromosome loss in childhood leukaemias.
abstract: During the past 3 1/2 years cytogenetic studies have been performed on all children with leukaemia prior to treatment. Loss of the Y chromosome documented by chromosome banding techniques, was observed in bone marrow blast cells from two of II consecutive male children. On patient had acute myeloblastic leukaemia of t(8;21) type. The other patient was diagnosed as acute lymphoblastic leukemia. Our studies provide evidence that Y loss occurs in childhood leukemias and is not necessarily related to an ageing process as suggested by others. Futhermore, this study demonstrates that Y loss can occur as a sole abnormality in non-myeloid leukaemia.
mesh_terms: D000293:Adolescent; D001856:Bone Marrow Examination; D002648:Child; D002871:Chromosome Banding; D006801:Humans; D007621:Karyotyping; D007945:Leukemia, Lymphoid / Q000235:genetics*; D015470:Leukemia, Myeloid, Acute / Q000235:genetics*; D008297:Male; D012729:Sex Chromosome Aberrations; D014998:Y Chromosome