About this trial
This is a single arm, open-label, non-randomized multi-institution phase II trial of a Fc enhanced CTLA4 antibody, vilastobart, in combination with PD-1 antibody, retifanlimab, in patients with BRCA1, BRCA2 or PALB2 deficient pancreatic cancer (PC).
Eligibility criteria
Qualifiers
Participant must have histologically proven metastatic pancreatic cancer. Histologies including acinar cell carcinoma, carcinoma, ductal carcinoma, ductal adenocarcinoma, poorly differentiated or adenosquamous carcinoma are allowed.
Participant must have a germline or somatic pathogenic alteration in BRCA1, BRCA2, or PALB2 on tumor next generation sequencing (NGS) performed using a CLIA certified assay. Somatic pathogenic alterations detected on circulating tumor DNA need confirmation on tumor tissue NGS. Germline pathogenic alterations in BRCA1, BRCA2 or PALB2 do not require further confirmation on tumor NGS. All genomic reports be verified in writing (via email) by site and/or overall PI.
Participants must have measurable disease per RECIST version 1.1.
Participant must have at least one disease site which is amenable to safe biopsy and must agree to pre- and on-treatment biopsies (core, incisional, or excisional biopsy) of tumor site. In select cases biopsies can be waived after discussion with the Sponsor Investigator.
Disqualifiers
Participants with neuroendocrine tumors of the pancreas are excluded.
Received prior treatment with anti-CTLA-4 therapy
Received prior immune-checkpoint anti-PD-1/PD-L1 therapy
Received prior approved systemic anticancer therapy within 2 weeks or within its 5 half-lives prior to study treatment, whichever is shorter. Note: Long-standing hormonal therapy for prostate, breast, uterine, and adrenal cancer may be permitted to continue if it is deemed to be in the best interest of the patient, after discussion with the Sponsor Investigator.
Trial design
Treatments tested in this trial
- vilastobart (XTX101)
- Retifanlimab
Treatment groups
Sponsors and collaborators
Massachusetts General Hospital
Lead sponsor
Xilio Development, Inc.
Collaborator
Incyte Corporation
Collaborator
Lustgarten Foundation
Collaborator