RT Journal Article SR Electronic T1 Congenital leukaemia after heavy abuse of permethrin during pregnancy JF Archives of Disease in Childhood - Fetal and Neonatal Edition JO Arch Dis Child Fetal Neonatal Ed FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP F436 OP F437 DO 10.1136/fn.88.5.F436 VO 88 IS 5 A1 A Borkhardt A1 M Wilda A1 U Fuchs A1 L Gortner A1 I Reiss YR 2003 UL http://fn.bmj.com/content/88/5/F436.abstract AB A single case is described of congenital leukaemia with 11q23/MLL rearrangement in a preterm female newborn. Because of arachnophobia, the mother had heavily abused aerosolised permethrin, a widely used household insecticide. Permethrin is considered comparatively safe, but, in view of the mother’s history, its potential to induce cleavage of the MLL gene in cell culture was tested. Incubation of the BV173 cell line with 50 μM permethrin readily induced MLL cleavage.