"Leukemic" pattern of in vitro growth in a patient with Down syndrome and transient myeloproliferative disorder.
Peripheral blood cells from a female infant with Down syndrome and over 60% circulating myeloblasts were cultured in soft agar. Growth was virtually restricted to cluster formation, and cluster-forming cells resided almost exclusively in the very light density fraction (SG less than 1.062). Morphological assessment of clusters revealed no evidence of cellular differentiation beyond the blast cell stage. Despite receiving no specific chemotherapy, the peripheral blood normalized within 2 months, and there was no evidence of leukemia when the patient died aged 1 year from cardiac pathology. The findings indicate that caution should be exercised when assessing prognosis on the basis of in vitro growth characteristics in such patients.
D000362:Agar; D001773:Blood Cells / Q000254:growth & development*; D002454:Cell Differentiation; D002478:Cells, Cultured; D004314:Down Syndrome / Q000097:blood* / Q000150:complications; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007938:Leukemia / Q000097:blood*; D009196:Myeloproliferative Disorders / Q000097:blood* / Q000150:complications
D000362:Agar