BCR and chronic myelogenous leukemia, BCR-ABL1 positive: Marrow histology at one month showed restoration of trilineage hematopoiesis and BCR-ABL RT-PCR at three months showed a 1.4 log reduction in transcript levels.<h4>Conclusions</h4>The karyotypic abnormality of inv(3)(q21q26.2) in CML is not restricted to adult patients.