Near haploid acute lymphoblastic leukemia: seven new cases and a review of the literature.

Seven new cases are described of near haploid acute lymphoblastic leukemia (ALL) and the findings reviewed together with updated complete remission duration and survival data for the 21 cases already published. The patients were four males and three females, with an age range 2-19 years; all had an immunophenotype consistent with common ALL. The poor prognostic outlook for patients with near haploid ALL is confirmed by the median remission duration of 14 months for these patients, which is comparable to that for the previously published cases