Custom-Made cancer vaccine shows promise in advanced tumors

NCT ID NCT05269381

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests a personalized vaccine made from a patient's own tumor proteins, given alone or with the immunotherapy drug pembrolizumab. The goal is to see if the combination is safe and helps the immune system attack advanced solid tumors. About 132 people with various advanced cancers will take part.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
personalized neoantigen peptide-based vaccine and pembrolizumab
What this could lead to
If it works, this could point toward a new treatment option that helps the immune system fight advanced solid tumors more effectively.
What could go wrong
This is an early-phase trial with a small number of participants, so the vaccine may not work for everyone. Side effects from the vaccine or pembrolizumab are possible.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ANATOMIC STAGE III BREAST CANCER AJCC V8 ANATOMIC STAGE IIIA BREAST CANCER AJCC V8 ANATOMIC STAGE IIIB BREAST CANCER AJCC V8 ANATOMIC STAGE IIIC BREAST CANCER AJCC V8 ANATOMIC STAGE IV BREAST CANCER AJCC V8 BREAST ADENOCARCINOMA CLINICAL STAGE III CUTANEOUS MELANOMA AJCC V8 CLINICAL STAGE III GASTRIC CANCER AJCC V8 CLINICAL STAGE III GASTROESOPHAGEAL JUNCTION ADENOCARCINOMA AJCC V8 CLINICAL STAGE III MERKEL CELL CARCINOMA AJCC V8 CLINICAL STAGE IV CUTANEOUS MELANOMA AJCC V8 CLINICAL STAGE IV GASTRIC CANCER AJCC V8 CLINICAL STAGE IV GASTROESOPHAGEAL JUNCTION ADENOCARCINOMA AJCC V8 CLINICAL STAGE IV MERKEL CELL CARCINOMA AJCC V8 CLINICAL STAGE IVA GASTRIC CANCER AJCC V8 CLINICAL STAGE IVA GASTROESOPHAGEAL JUNCTION ADENOCARCINOMA AJCC V8 CLINICAL STAGE IVB GASTRIC CANCER AJCC V8 CLINICAL STAGE IVB GASTROESOPHAGEAL JUNCTION ADENOCARCINOMA AJCC V8 LOCALLY ADVANCED CERVICAL CARCINOMA LOCALLY ADVANCED ENDOMETRIAL CARCINOMA LOCALLY ADVANCED GASTRIC ADENOCARCINOMA LOCALLY ADVANCED GASTROESOPHAGEAL JUNCTION ADENOCARCINOMA LOCALLY ADVANCED HEAD AND NECK SQUAMOUS CELL CARCINOMA LOCALLY ADVANCED HEPATOCELLULAR CARCINOMA LOCALLY ADVANCED LUNG NON-SMALL CELL CARCINOMA LOCALLY ADVANCED MALIGNANT SOLID NEOPLASM LOCALLY ADVANCED MELANOMA LOCALLY ADVANCED MERKEL CELL CARCINOMA LOCALLY ADVANCED RENAL CELL CARCINOMA LOCALLY ADVANCED SKIN SQUAMOUS CELL CARCINOMA LOCALLY ADVANCED TRIPLE-NEGATIVE BREAST CARCINOMA LOCALLY ADVANCED UNRESECTABLE BREAST CARCINOMA LOCALLY ADVANCED UNRESECTABLE CERVICAL CARCINOMA LOCALLY ADVANCED UNRESECTABLE GASTRIC ADENOCARCINOMA LOCALLY ADVANCED UNRESECTABLE GASTROESOPHAGEAL JUNCTION ADENOCARCINOMA LOCALLY ADVANCED UNRESECTABLE RENAL CELL CARCINOMA LOCALLY ADVANCED UROTHELIAL CARCINOMA METASTATIC CERVICAL CARCINOMA METASTATIC ENDOMETRIAL CARCINOMA METASTATIC GASTRIC ADENOCARCINOMA METASTATIC GASTROESOPHAGEAL JUNCTION ADENOCARCINOMA METASTATIC HEAD AND NECK SQUAMOUS CELL CARCINOMA METASTATIC HEPATOCELLULAR CARCINOMA METASTATIC LUNG NON-SMALL CELL CARCINOMA METASTATIC MALIGNANT SOLID NEOPLASM METASTATIC MELANOMA METASTATIC MERKEL CELL CARCINOMA METASTATIC RENAL CELL CARCINOMA METASTATIC SKIN SQUAMOUS CELL CARCINOMA METASTATIC TRIPLE-NEGATIVE BREAST CARCINOMA METASTATIC UROTHELIAL CARCINOMA SKIN SQUAMOUS CELL CARCINOMA STAGE III CERVICAL CANCER AJCC V8 STAGE III HEAD AND NECK CUTANEOUS SQUAMOUS CELL CARCINOMA AJCC V8 STAGE III HEPATOCELLULAR CARCINOMA AJCC V8 STAGE III LUNG CANCER AJCC V8 STAGE III RENAL CELL CANCER AJCC V8 STAGE III UTERINE CORPUS CARCINOMA OR CARCINOSARCOMA AJCC V8 STAGE IIIA CERVICAL CANCER AJCC V8 STAGE IIIA HEPATOCELLULAR CARCINOMA AJCC V8 STAGE IIIA LUNG CANCER AJCC V8 STAGE IIIA UTERINE CORPUS CANCER AJCC V8 STAGE IIIB CERVICAL CANCER AJCC V8 STAGE IIIB HEPATOCELLULAR CARCINOMA AJCC V8 STAGE IIIB LUNG CANCER AJCC V8 STAGE IIIB UTERINE CORPUS CANCER AJCC V8 STAGE IIIC LUNG CANCER AJCC V8 STAGE IIIC UTERINE CORPUS CANCER AJCC V8 STAGE IIIC1 UTERINE CORPUS CANCER AJCC V8 STAGE IIIC2 UTERINE CORPUS CANCER AJCC V8 STAGE IV CERVICAL CANCER AJCC V8 STAGE IV CUTANEOUS SQUAMOUS CELL CARCINOMA OF THE HEAD AND NECK AJCC V8 STAGE IV HEAD AND NECK CUTANEOUS SQUAMOUS CELL CARCINOMA AJCC V8 STAGE IV HEPATOCELLULAR CARCINOMA AJCC V8 STAGE IV LUNG CANCER AJCC V8 STAGE IV RENAL CELL CANCER AJCC V8 STAGE IV UTERINE CORPUS CARCINOMA OR CARCINOSARCOMA AJCC V8 STAGE IVA CERVICAL CANCER AJCC V8 STAGE IVA HEPATOCELLULAR CARCINOMA AJCC V8 STAGE IVA LUNG CANCER AJCC V8 STAGE IVA UTERINE CORPUS CANCER AJCC V8 STAGE IVB CERVICAL CANCER AJCC V8 STAGE IVB HEPATOCELLULAR CARCINOMA AJCC V8 STAGE IVB LUNG CANCER AJCC V8 STAGE IVB UTERINE CORPUS CANCER AJCC V8 TRIPLE-NEGATIVE BREAST CARCINOMA UNRESECTABLE CERVICAL CARCINOMA UNRESECTABLE ENDOMETRIAL CARCINOMA UNRESECTABLE GASTRIC ADENOCARCINOMA UNRESECTABLE GASTROESOPHAGEAL JUNCTION ADENOCARCINOMA UNRESECTABLE HEAD AND NECK SQUAMOUS CELL CARCINOMA UNRESECTABLE HEPATOCELLULAR CARCINOMA UNRESECTABLE LUNG NON-SMALL CELL CARCINOMA UNRESECTABLE MALIGNANT SOLID NEOPLASM UNRESECTABLE MELANOMA UNRESECTABLE MERKEL CELL CARCINOMA UNRESECTABLE RENAL CELL CARCINOMA UNRESECTABLE SKIN SQUAMOUS CELL CARCINOMA UNRESECTABLE TRIPLE-NEGATIVE BREAST CARCINOMA UNRESECTABLE UROTHELIAL CARCINOMA

Contacts and locations

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • Mayo Clinic in Florida

    RECRUITING

    Jacksonville, Florida, 32224-9980, United States

    Contact Email: •••••@•••••

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