Of the two tumors with dual FGFR1 + PIK3R1 mutations, one contained an accompanying PTPN11 mutation (p.A72T), which is a known mutational hotspot in myeloid neoplasms thus providing support for pathogenicity [Catalog of Somatic Mutations in Cancer database v91 release]. Here, PTPN11 is linked to myeloid neoplasm.