Belzutifan, sold under the brand name Welireg, is an anti-cancer medication used for the treatment of von Hippel–Lindau disease-associated renal cell carcinoma. It is taken by mouth. Belzutifan is an hypoxia-inducible factor-2 alpha (HIF-2α) inhibitor.
{{Infobox drug | image = Belzutifan.svg | image_class = skin-invert-image | width = | alt = | caption =
| pronounce = | tradename = Welireg | Drugs.com = | MedlinePlus = a621047 | DailyMedID = Belzutifan | pregnancy_AU = D | pregnancy_AU_comment = | pregnancy_category= | routes_of_administration = By mouth | class = Antineoplastic | ATC_prefix = L01 | ATC_suffix = XX74 | ATC_supplemental =
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