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Clinical trialNCT05269381RecruitingPhase 1/PHASE2Interventional

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

SponsorMayo ClinicEnrollment138Anatomic Stage III Breast Cancer AJCC v8Anatomic Stage IIIA Breast Cancer AJCC v8Anatomic Stage IIIB Breast Cancer AJCC v8Anatomic Stage IIIC Breast Cancer AJCC v8Anatomic Stage IV Breast Cancer AJCC v8Breast Adenocarcinoma+95 more conditions
View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

This 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.
clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

1 registered facility, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States
  • Mayo Clinic in Florida

    Jacksonville, Florida, United States

    Yanyan Lou, MD, PhD
    Recruiting

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

Cyclophosphamide →Neoantigen Peptide VaccinePembrolizumab →Sargramostim →
Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
31 Mar 2022
Primary completion
31 Mar 2028
Completion
31 Mar 2028
Last update posted
20 Aug 2026
Registered enrollment
138
Registry id
NCT05269381
clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.