So far, no distinctive differences have been observed in the frequency and the sites of point mutations in N- and K-ras genes or in the rearrangement of the bcr gene, for a final conclusion of the specificity of radiation induced leukemia.
The ratio of a single leukemia type to all leukemias was highest for CML in Hiroshima, and the occurrence of CML was thought to be most characteristic to atomic bomb radiation induced leukemia.