FGFR1 and hematopoietic and lymphoid cell neoplasm: These observations suggest that the BCR-FGFR1 fusion kinase induces murine leukemia which is consistent with the human disease and, in agreement with Murati and colleagues [9], suggests that BCR-FGFR1 represents a distinct FGFR1 fusion-induced hematopoietic neoplasm.