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Leukaemia phenotype and ethnicity in children living in the United Arab Emirates.

Immunophenotyping was carried out in the presentation bone marrow samples of 32 children with acute lymphoblastic leukaemia (ALL), living in the UAE. Twenty two had B-cell precursor ALL, 10 had T-cell precursor leukaemia. Clinical features were in accordance with internationally reported series. Analysis of ethnic origin showed that children of subcontinental origin (Indian and Pakistani) had a significantly higher proportion of T-cell ALL than their Arabic counterparts. This may reflect an interim phase in the pattern of ALL, between those of the developing and industrialized countries.