LMO1 and acute lymphoblastic leukemia: Together with our demonstration that this region has haematopoietic activity when assayed in transgenic mice, this observation suggests that the LMO1 +57 region may be involved in the low level LMO1 expression observed in normal blood cells, and also become responsive to the altered transcriptional environment in a subset of T-ALL patients with the consequence of enhancing LMO1 expression.