Belzutifan for von Hippel–Lindau Disease–Associated Pancreatic Lesions
abstract
This abstract is available on the publisher's site.
Access this abstract nowPURPOSE
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 [pNETs] and serous cystadenomas).
PATIENTS AND METHODS
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 Response Evaluation Criteria in Solid Tumors version 1.1 by independent review committee, and safety.
RESULTS
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) in pancreatic lesions and 91% (20/22; 7 complete responses) 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.
CONCLUSIONS
Belzutifan continued to show robust activity and manageable safety in VHL disease-associated pNETs.
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Additional Info
Belzutifan for von Hippel-Lindau Disease: Pancreatic Lesion Population of the Phase 2 LITESPARK-004 Study
Clin. Cancer Res 2024 Feb 23;[EPub Ahead of Print], T Else, E Jonasch, O Lliopoulos, KE Beckermann, V Narayan, BL Maughan, S Oudard, JK Maranchie, AB Iversen, CM Goldberg, W Fu, RF Perini, Y Liu, WM Linehan, R SrinivasanFrom MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.