To date, less than 20 cases of uterine sarcoma with COL1A1::PDGFB fusion have been reported [113,114,115], including one high-grade case harboring both the COL1A1::PDGFB fusion and a pathogenic TP53 (p.P278A) mutation [114]. Here, COL1A1 is linked to uterine corpus sarcoma.