Several genetic abnormalities such as PDGFRα, PDGFRβ or FGFR1 have been observed in PDGFR-rearranged myeloid neoplasm [3], and the FIP1L1-PDGFRα fusion gene generated by the interstitial deletion on chromosome 4q12 has been reported to account for 5% to 15% [4]. The gene discussed is PDGFRB; the disease is myeloid neoplasm.