Acute nonlymphoblastic leukemia in childhood. High incidence of clonal abnormalities and nonrandom changes

Cytogenetic studies have been done on a group of childhood patients over a period of 3 1/2 years in which time Giemsa trypsin banding was applied to all specimens. Fifteen of the 107 patients (14%) were diagnosed as having acute nonlymphoblastic leukemia (ANLL). Twelve of the 15 had chromosomal abnormalities. The most common was an involvement of the #7 chromosome which occurred in five patients. Three patients had trisomy 19. No correlation could be found between the disease subgroup and the karyotypic aberration in patients with anomalies involving a common chromosome.

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