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Supplementary Table 2 from Belzutifan for von Hippel–Lindau Disease: Pancreatic Lesion Population of the Phase 2 LITESPARK-004 Study

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posted on 2024-05-01, 07:20 authored by Tobias Else, Eric Jonasch, Othon Iliopoulos, Kathryn E. Beckermann, Vivek Narayan, Benjamin L. Maughan, Stephane Oudard, Jodi K. Maranchie, Ane B. Iversen, Cynthia M. Goldberg, Wei Fu, Rodolfo F. Perini, Yanfang Liu, W. Marston Linehan, Ramaprasad Srinivasan

Supplementary Table 2. Patient-level summary of LGR by best overall response.

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Intramural Research Program (IRP)

National Cancer Institute (NCI)

United States Department of Health and Human Services

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ARTICLE ABSTRACT

Primary analysis of the ongoing, single-arm, phase 2 LITESPARK-004 study (NCT03401788) showed clinically meaningful antitumor activity in von Hippel–Lindau (VHL) disease–associated renal cell carcinoma (RCC) and other neoplasms with belzutifan treatment. We describe results of belzutifan treatment for VHL disease–associated pancreatic lesions [pancreatic neuroendocrine tumors (pNET) and serous cystadenomas]. Adults with VHL diagnosis based on germline VHL alteration, ≥1 measurable RCC tumor, no renal tumor >3 cm or other VHL neoplasm requiring immediate surgery, Eastern Cooperative Oncology Group performance status of 0 or 1, and no prior systemic anticancer treatment received belzutifan 120 mg once daily. End points included objective response rate (ORR), duration of response (DOR), progression-free survival (PFS), and linear growth rate (LGR) in all pancreatic lesions and pNETs per RECIST version 1.1 by independent review committee, and safety. All 61 enrolled patients (100%) had ≥1 pancreatic lesion and 22 (36%) had ≥1 pNET measurable at baseline. Median follow-up was 37.8 months (range, 36.1–46.1). ORR was 84% [51/61; 17 complete responses (CR)] in pancreatic lesions and 91% (20/22; 7 CRs) in pNETs. Median DOR and median PFS were not reached in pancreatic lesions or pNETs. After starting treatment, median LGR for pNETs was –4.2 mm per year (range, –7.9 to –0.8). Eleven patients (18%) had ≥1 grade 3 treatment-related adverse event (AE). No grade 4 or 5 treatment-related AEs occurred. Belzutifan continued to show robust activity and manageable safety in VHL disease–associated pNETs.

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