VAV1 and hematopoietic and lymphoid cell neoplasm: Interestingly Myo1f has been detected as a fusion with VAV1 (a Guanine Nucleotide Exchange Factor, GEF) in Peripheral T Cell Lymphomas (PTCL), a highly aggressive hematopoietic cancer of poor prognosis [112,113], in PTCL probably is VAV1 who promotes most of the transformation events, however, further studies are necessary to explore those possibilities.