Cited by 716Renal cell carcinoma treatmentCancer, Hypoxia, and MetabolismEar and Head Tumors

Belzutifan for Renal Cell Carcinoma in von Hippel–Lindau Disease

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Jonasch, Eric, Donskov, Frede, Iliopoulos, Othon, Rathmell, W. Kimryn, Narayan, Vivek K., Maughan, Benjamin L., Oudard, Stephane, Else, Tobias +7 more·2021·New England Journal of Medicine

Abstract

BACKGROUND: gene inactivation and constitutive activation of the transcription factor hypoxia-inducible factor 2α (HIF-2α). METHODS: In this phase 2, open-label, single-group trial, we investigated the efficacy and safety of the HIF-2α inhibitor belzutifan (MK-6482, previously called PT2977), administered orally at a dose of 120 mg daily, in patients with renal cell carcinoma associated with VHL disease. The primary end point was objective response (complete or partial response) as measured according to the Response Evaluation Criteria in Solid Tumors, version 1.1, by an independent central radiology review committee. We also assessed responses to belzutifan in patients with non-renal cell carcinoma neoplasms and the safety of belzutifan. RESULTS: After a median follow-up of 21.8 months (range, 20.2 to 30.1), the percentage of patients with renal cell carcinoma who had an objective response was 49% (95% confidence interval, 36 to 62). Responses were also observed in patients with pancreatic lesions (47 of 61 patients [77%]) and central nervous system hemangioblastomas (15 of 50 patients [30%]). Among the 16 eyes that could be evaluated in 12 patients with retinal hemangioblastomas at baseline, all (100%) were graded as showing improvement. The most common adverse events were anemia (in 90% of the patients) and fatigue (in 66%). Seven patients discontinued treatment: four patients voluntarily discontinued, one discontinued owing to a treatment-related adverse event (grade 1 dizziness), one discontinued because of disease progression as assessed by the investigator, and one patient died (of acute toxic effects of fentanyl). CONCLUSIONS: Belzutifan was associated with predominantly grade 1 and 2 adverse events and showed activity in patients with renal cell carcinomas and non-renal cell carcinoma neoplasms associated with VHL disease. (Funded by Merck Sharp and Dohme and others; MK-6482-004 ClinicalTrials.gov number, NCT03401788.).

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Crossref · 10.1056/nejmoa2103425

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  • PT2977/belzutifan was approved by the FDA for treatment of RCC in patients with von Hippel-Lindau syndrome.

    “PT2977/belzutifan was recently approved by the FDA for the treatment of RCC in patients with von Hippel-Lindau syndrome (47, 48).”

    From HIF inhibitor 32-134D eradicates murine hepatocellular carcinoma in combination with anti-PD1 therapy (2022) · cites this paper as [48]

    The Abstract Methods identifies PT2977 as the former name of belzutifan and reports its study in patients with VHL-associated renal cell carcinoma. The Discussion reports treatment activity, but our copy does not state that the FDA approved belzutifan for this indication; the approval part of the claim is unsupported. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • The most frequent on-target toxicity with HIF-2 inhibitors (PT2385; belzutifan) is anemia from suppression of renal/hepatic erythropoietin.

    “The most frequent on-target toxicity with HIF-2 inhibitors (PT2385; belzutifan) is anemia from suppression of renal/hepatic erythropoietin.”

    From HIF inhibition: Current strategies and clinical challenges (2026) · cites this paper as [421]

    The Discussion (page unavailable) calls anemia the most common adverse event with belzutifan and an on-target effect of HIF-2α inhibition. Results > Safety (page unavailable) links the hemoglobin decrease to inhibition of the EPO gene and reduced erythropoietin production. The paper does not establish that anemia is the most frequent toxicity with PT2385, nor does it specify renal and hepatic erythropoietin suppression as the mechanism in these patients. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Anemia occurred commonly in early trials and, during prolonged belzutifan therapy, occasionally required transfusion or erythropoiesis-stimulating agents.

    “Anemia occurred commonly in early trials and, during prolonged belzutifan therapy, occasionally required transfusion or erythropoiesis-stimulating agents, hence the need for routine hematological monitoring [37,412,421].”

    From HIF inhibition: Current strategies and clinical challenges (2026) · cites this paper as [421]

  • VHL gene mutations lead to stability of HIF subunits and constitutive activation of HIF-mediated transcriptional pathways in patients with VHL, causing progression of renal cell carcinoma.

    “VHL gene mutations lead to the stability of HIF subunits and the constitutive activation of HIF‐mediated transcriptional pathways in patients with VHL, causing the progression of renal cell carcinoma.”

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Authors
Jonasch, E., Donskov, F., Iliopoulos, O., Rathmell, W. K., Narayan, V. K., Maughan, B. L., Oudard, S., Else, T., Maranchie, J. K., Welsh, S. J., Thamake, S., Park, E. K., Perini, R. F., Linehan, W. M., & Srinivasan, R.
Affiliations
  • The University of Texas MD Anderson Cancer Center (US)
  • From the University of Texas M.D. Anderson Cancer Center, Houston (E.J.); Aarhus University Hospital, Aarhus, Denmark (F.D.); Massachusetts General Hospital Cancer Center and Harvard Medical School, Boston (O.I.); Vanderbilt University Medical Center, Nashville (W.K.R.); University of Pennsylvania, Philadelphia (V.K.N.); the University of Utah, Salt Lake City (B.L.M.); Hôpital Européen Georges-Pompidou, University of Paris, Paris (S.O.); the University of Michigan, Ann Arbor (T.E.); the University of Pittsburgh, Pittsburgh (J.K.M.); Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom (S.J.W.); Merck, Kenilworth, NJ (S.T., E.K.P., R.F.P.); and the Center for Cancer Research, National Cancer Institute, Bethesda, MD (W.M.L., R.S.).
Venue
New England Journal of Medicine
Published
2021-11-25
Volume
385
Issue
22
Pages
2036-2046
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W3215189579
Cited by
714
References
22
Citations by year
2026: 140 · 2025: 167 · 2024: 135 · 2023: 140 · 2022: 128 · 2021: 4
FWCI
66.14
Type
journal article
Language
en
Open access
Locations
  • New England Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Renal cell carcinoma treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Health Sciences › Medicine › Oncology › Ear and Head Tumors
Keywords
belzutifan, HIF-2α inhibition, von Hippel-Lindau disease, renal cell carcinoma, hemangioblastoma, retinal hemangioblastoma, pancreatic lesions, anemia, drug safety, objective response
MeSH terms
Adult, Aged, Anemia, Antineoplastic Agents, Carcinoma, Renal Cell, Fatigue, Female, Follow-Up Studies, von Hippel-Lindau Disease, Humans, Indenes, Kidney Neoplasms, Male, Middle Aged, Neoplasms, Multiple Primary, Pancreatic Neoplasms, Age of Onset, Hemangioblastoma, Neuroendocrine Tumors, Disease Progression, Basic Helix-Loop-Helix Proteins

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