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A Study of Belzutifan in Adolescent Participants With Solid Tumors (MK-9999-01E/LIGHTBEAM-U01)
Sponsor: Merck Sharp & Dohme LLC
Summary
Researchers are looking for new ways to treat adolescents with locally advanced, unresectable, or metastatic solid tumors. Participants were enrolled into pheochromocytoma/paraganglioma (PPGL), wild type gastrointestinal stromal tumor (wtGIST), and Von Hippel-Lindau (VHL) disease-associated localized tumors cohorts: * PPGL are rare cancers that start in cells that make hormones in the adrenal glands * wtGIST is a less common type of cancer that starts in the digestive tract. Wild type means it does not have certain gene mutations (changes) * VHL disease-associated localized tumors are rare tumors caused by a certain gene mutation that may be passed down from parents to children * Locally advanced means the cancer has spread into nearby tissue * Unresectable means the cancer cannot be removed by surgery * Metastatic means the cancer has spread to other parts of the body The goal of the study is to learn about the safety of belzutifan and if people tolerate it.
Official title: LIGHTBEAM-U01 Substudy 01E: A Phase 2 Substudy to Evaluate the Safety and Efficacy of Belzutifan in Participants With Solid Tumors
Key Details
Gender
All
Age Range
12 Years - 17 Years
Study Type
INTERVENTIONAL
Enrollment
15
Start Date
2026-11-23
Completion Date
2034-01-02
Last Updated
2026-08-10
Healthy Volunteers
No
Conditions
Interventions
Belzutifan
Administered once daily via oral tablet