A Study of a Personalized Cancer Vaccine Targeting Shared Neoantigens
Completed · Phase 1/Phase 2
Conditions studied: Non-Small Cell Lung Cancer, Colorectal Cancer, Pancreatic Cancer, Solid Tumor, Shared Neoantigen-Positive Solid Tumors
In brief
The purpose of this study is to evaluate the dose, safety, immunogenicity and early clinical activity of GRT-C903 and GRT-R904, a neoantigen-based therapeutic cancer vaccine, in combination with immune checkpoint blockade, in patients with advanced or metastatic non-small cell lung cancer, microsatellite stable colorectal cancer, pancreatic cancer, and shared neoantigen-positive tumors. Based on the Phase 1 data, an updated vaccine candidate (SLATE-KRAS or version 2) was developed that removed 16 of the 20 mutations included in the original vaccine (version 1) and solely targets KRAS mutations.
Key facts
- Study ID
- NCT03953235
- Run by
- Gritstone bio, Inc.
- People needed
- 39
- Starts
- 2019-07-18
- Expected to finish
- 2023-03-10
- Last updated by the study team
- 2023-09-13
Who can join
Age: 18 and older. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- Provide a signed and dated informed consent form prior to initiation of study-specific procedures.
- Patients with the indicated advanced or metastatic solid tumor as follows:
- Microsatellite-stable colorectal cancer (MSS-CRC) who are currently receiving systemic treatment with a fluoropyrimidine and oxaliplatin and/or irinotecan that may include a VEGF or EGFR targeting therapy as their 1L therapy for metastatic disease OR who have experienced disease progression following treatment with a fluoropyrimidine, oxaliplatin, and irinotecan that may include a VEGF or EGFR targeting therapy and have not received additional lines of systemic therapy in the metastatic setting.
- Non-small cell lung cancer (NSCLC) who are currently receiving systemic treatment with an anti-PD-(L)1 antibody in combination with cytotoxic, platinum-based chemotherapy OR who have experienced disease progression following treatment with an anti-PD-(L)1 antibody in combination with cytotoxic, platinum-based chemotherapy (or anti-PD-(L)1 alone if patient refuses platinum-based chemotherapy), and have not received additional lines of systemic therapy in the metastatic setting.
- Pancreatic ductal adenocarcinoma (PDA) who are currently receiving systemic cytotoxic chemotherapy as their 1L therapy for metastatic disease OR who have experienced disease progression on 1L systemic cytotoxic chemotherapy and have received no more than 1 prior line of therapy in the metastatic setting.
- Any solid tumor histology where the patient has experienced disease progression with all available therapies known to confer clinical benefit
- Patient's tumor possesses one of the mutations listed below, and is determined to express a HLA allele for antigen presentation of the identified tumor mutation:
- VERSION 1.0 of the expression cassette:
- BRAF_G466V // CTNNB1_S37F // CTNNB1_S45F // CTNNB1_S45P // CTNNB1_T41A // ERBB2_Y772_A775dup // KRAS_G12C or NRAS_G12C // KRAS_G12D or NRAS_G12D // KRAS_G12V // KRAS_G13D // KRAS_Q61H or NRAS_Q61H // KRAS_Q61K or NRAS_Q61K // KRAS_Q61L or NRAS_Q61L // KRAS_Q61R or NRAS_Q61R // TP53_K132E // TP53_K132N // TP53_R213L // TP53_R249M // TP53_S127Y
- VERSION 2.0 of the expression cassette:
- KRAS_G12C or NRAS_G12C // KRAS_G12D or NRAS_G12D // KRAS_G12V or NRAS_G12V // KRAS_Q61H or NRAS_Q61H
- ECOG Performance Status 0 or 1
- Measurable disease according to RECIST v1.1
- Adequate organ function, as measured by laboratory values (criteria listed in protocol)
You may not qualify if…
- Tumors with genetic characteristics as follows:
- For NSCLC, patients with a known genetic driver alteration in EGFR, ALK, ROS1, RET, or TRK
- Patients with known MSI-high disease based on institutional standard
- Known exposure to chimpanzee adenovirus or any history of anaphylaxis in reaction to a vaccination
- Bleeding disorder (eg., factor deficiency, coagulopathy) or history of significant bruising or bleeding following IM injections or blood draws
- History of allogenic/solid organ transplant
- Active, known, or suspected autoimmune disease
- Active tuberculosis or recent (<2 week) clinically significant infection, or evidence of active hepatitis B or hepatitis C
- Known history of positive test for human immunodeficiency (HIV) or known acquired immunodeficiency syndrome (AIDS)
- Complete inclusion and exclusion criteria are listed in the clinical study protocol.
Where it is running
- Mayo Clinic Arizona — Phoenix, Arizona, United States
- UCLA Medical Center — Santa Monica, California, United States
- Mayo Clinic Florida — Jacksonville, Florida, United States
- University of Chicago Medicine, Comprehensive Cancer Center — Chicago, Illinois, United States
- Mayo Clinic Rochester — Rochester, Minnesota, United States
- Columbia University Medical Center, Herbert Irving Comprehensive Cancer Center — New York, New York, United States
- Memorial Sloan Kettering Cancer Center — New York, New York, United States
- The Ohio State University Comprehensive Cancer Center — Columbus, Ohio, United States
- Fox Chase Cancer Center — Philadelphia, Pennsylvania, United States
- Tennessee Oncology — Nashville, Tennessee, United States
- MD Anderson Cancer Center — Houston, Texas, United States
- Virginia Cancer Specialists — Fairfax, Virginia, United States
Full record on ClinicalTrials.gov
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