XCancer

Abemaciclib Before 177Lu-PSMA-617 for the Treatment of Metastatic Castrate Resistant Prostate Cancer

Description:

This phase I/II trial tests the safety, side effects, and best dose of abemaciclib and whether it works before 177Lu-PSMA-617 in treating patients with castration resistant prostate cancer that has spread to other places in the body (metastatic). Abemaciclib is in a class of medications called kinase inhibitors. It is highly selective inhibitors of cyclin-dependent kinase 4 and 6, which are proteins involved in cell differentiation and growth. It works by blocking the action of an abnormal protein that signals cancer cells to multiply. Radioligand therapy uses a small molecule (in this case 177Lu-PSMA-617), which carries a radioactive component to destroys tumor cells. When 177Lu-PSMA-617 is injected into the body, it attaches to the prostate-specific membrane antigen (PSMA) receptor found on tumor cells. After 177Lu-PSMA-617 attaches to the PSMA receptor, its radiation component destroys the tumor cell. Giving abemaciclib before 177Lu-PSMA-617 may help 177Lu-PSMA-617 kill more tumor cells.

Sponsor:

University of California, San Francisco

Phase:

Phase 1/2

Contacts:

Vadim S Koshkin, MD (PRINCIPAL_INVESTIGATOR)

UCSF Genitourinary Medical Oncology Recruitment (CONTACT)

gutrials@ucsf.edu

877-827-3222

Government Study Link:

NCT05113537 - Click here to see study on

ClinicalTrials.gov

PSMA-11

Isotope(s):
Target(s):
  • PSMA
Ligand Class: Small Molecules
Chelator: HBED-CC

PSMA-617

Isotope(s):
Target(s):
  • PSMA
Ligand Class: Small Molecules
Chelator: DOTA
Inclusion
  • Patients must have metastatic castration resistant prostate cancer (mCRPC) with progression based on Prostate Cancer Working Group 3 (PCWG3) criteria.
  • Patients must have adenocarcinoma histology.
  • Prior treatment with at least one novel hormonal agents (NHA) such as abiraterone acetate, enzalutamide, apalutamide, darolutamide etc.
  • Participants must have histologically or cytologically confirmed prostate cancer. Either fresh biopsy or archival tissue can be used for confirmation.
Exclusion
  • Patients with a history of central nervous system (CNS) metastases are ineligible unless they have received prior therapy (surgery, radiation therapy (RT), gamma knife) are asymptomatic, and not receiving corticosteroids for this indication. Head imaging is not required