Pathogenic variants in FGFR2 have been related to the Apert (AS) (OMIM 101,200), Pfeiffer (PS) (OMIM 101,600), Crouzon (OMIM 123,500), and Antley‐Bixler (OMIM 201,750) syndromes, and FGFR3 have been related to the Muenke syndrome (MS) (OMIM 602,849), however, pathogenic variants in other FGFR genes may overlap between different syndromes. The gene discussed is FGFR3; the disease is myeloid sarcoma.