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Study identifier: NCT07003542 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

A Phase 2 and Pharmacodynamic Study of Sitagliptin in Patients With Progressive Grade 4 Gliomas

Condition: Glioblastoma · Brain Tumor  ·  Sponsor: Case Comprehensive Cancer Center

PhasePhase 2
Planned participants48
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

The purpose of this study is to evaluate whether treating glioblastoma patients with sitagliptin can improve immune response against the tumor by targeting specific immune cells called myeloid-derived suppressor cells (MDSCs) that suppress your body's natural immune response against cancer. Sitagliptin is an investigational drug for this condition that works by inhibiting an enzyme called dipeptidyl peptidase 4 (DPP-4), which MDSCs rely on to enter the brain and function. While sitagliptin is FDA-approved for diabetes treatment, its use in glioblastoma is investigational (experimental).

This description comes directly from the study's public registry record.

Talk to the study team

David Peereboom, MD  ·  1-866-223-8100  ·  TaussigResearch@ccf.org

Always discuss trial participation with your own doctor first.

Locations (1)

Case Comprehensive Cancer Center, Cleveland Clinic Foundation Taussig Cancer InstituteCleveland, Ohio, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT07003542