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OncoMatch/Clinical Trials/NCT05269381

Personalized Neoantigen Peptide-Based Vaccine in Combination With Pembrolizumab for Treatment of Advanced Solid Tumors

Is NCT05269381 recruiting? Yes, currently enrolling (May 2026). This Phase 1/2 trial studies multiple treatments including Neoantigen Peptide Vaccine and Pembrolizumab for anatomic stage iii breast cancer ajcc v8.

Phase 1/2RecruitingMayo ClinicNCT05269381Data as of May 2026

Treatment: Cyclophosphamide · Neoantigen Peptide Vaccine · Pembrolizumab · SargramostimThis phase I/II trial tests the safety and tolerability of an experimental personalized vaccine when given by itself and with pembrolizumab in treating patients with solid tumor cancers that have spread to other places in the body (advanced). The experimental vaccine is designed target certain proteins (neoantigens) on individuals' tumor cells. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving the personalized neoantigen peptide-based vaccine with pembrolizumab may be safe and effective in treating patients with advanced solid tumors.

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Extracted eligibility criteria

Cancer type

Breast Carcinoma

Melanoma

Gastric Cancer

Esophageal Carcinoma

Tumor Agnostic

Cervical Cancer

Endometrial Cancer

Head and Neck Squamous Cell Carcinoma

Hepatocellular Carcinoma

Non-Small Cell Lung Carcinoma

Renal Cell Carcinoma

Triple-Negative Breast Cancer

Urothelial Carcinoma

Biomarker criteria

Required: EGFR wild-type

No actionable EGFR mutations and ALK fusions [Cohort 4 NSCLC]

Required: ALK wild-type

No actionable EGFR mutations and ALK fusions [Cohort 4 NSCLC]

Allowed: EGFR actionable mutation

Patients with actionable genomic abnormality including, but not limited to EGFR... must have received and progressed on at least one line of prior FDA-approved targeted therapy

Allowed: ALK fusion

Patients with actionable genomic abnormality including, but not limited to... ALK... must have received and progressed on at least one line of prior FDA-approved targeted therapy

Allowed: MET actionable abnormality

Patients with actionable genomic abnormality including, but not limited to... MET... must have received and progressed on at least one line of prior FDA-approved targeted therapy

Allowed: ROS1 fusion

Patients with actionable genomic abnormality including, but not limited to... ROS-1... must have received and progressed on at least one line of prior FDA-approved targeted therapy

Allowed: RET fusion

Patients with actionable genomic abnormality including, but not limited to... RET... must have received and progressed on at least one line of prior FDA-approved targeted therapy

Allowed: NTRK1 fusion

Patients with actionable genomic abnormality including, but not limited to... NTRK... must have received and progressed on at least one line of prior FDA-approved targeted therapy

Allowed: NTRK2 fusion

Patients with actionable genomic abnormality including, but not limited to... NTRK... must have received and progressed on at least one line of prior FDA-approved targeted therapy

Allowed: NTRK3 fusion

Patients with actionable genomic abnormality including, but not limited to... NTRK... must have received and progressed on at least one line of prior FDA-approved targeted therapy

Allowed: KRAS actionable mutation

Patients with actionable genomic abnormality including, but not limited to... KRAS... must have received and progressed on at least one line of prior FDA-approved targeted therapy

Allowed: BRAF actionable mutation

Patients with actionable genomic abnormality including, but not limited to... BRAF... must have received and progressed on at least one line of prior FDA-approved targeted therapy

Disease stage

Required: Stage I, II, III, IV (AJCC 7th (TNBC), AJCC 8th (NSCLC))

Stage I-III based on 7th edition of TNM staging system from American Joint Committee on Cancer (AJCC) [TNBC]; Stage II or stage III based on AJCC 8th [NSCLC]; Measurable disease as defined by RECIST (version 1.1) criteria or non-measurable disease [Phase I/II]

Performance status

ECOG 0–1(Restricted strenuous activity)

Prior therapy

Cannot have received: GM-CSF

Any prior hypersensitivity or adverse reaction to GM-CSF

Lab requirements

Blood counts

Hemoglobin ≥ 9.0 g/dL; Absolute neutrophil count (ANC) ≥ 1500/mm³; Platelet count ≥ 100,000/mm³

Kidney function

Creatinine ≤ 1.5 x ULN OR calculated creatinine clearance ≥ 50 ml/min using Cockcroft-Gault formula

Liver function

Total bilirubin ≤ 1.5 x ULN; AST and ALT ≤ 3 x ULN or ≤ 5 x ULN with liver metastases

Hemoglobin >= 9.0 g/dL; Absolute neutrophil count (ANC) >= 1500/mm^3; Platelet count >= 100,000/mm^3; Total bilirubin =< 1.5 x upper limit of normal (ULN); Aspartate transaminase (AST) and alanine transaminase (ALT) =< 3 x ULN or =< 5 x ULN with liver metastases; Creatinine =< 1.5 x ULN OR calculated creatinine clearance must be >= 50 ml/min using Cockcroft-Gault formula

Structured fields extracted by AI. May contain errors — verify against the official protocol.

US trial sites

  • Mayo Clinic in Florida · Jacksonville, Florida

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