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Clinical Trial Summary

Background: A new cancer therapy takes white blood cells from a person, grows them in a lab, genetically changes them, then gives them back to the person. Researchers think this may help attack tumors in people with certain cancers. It is called gene transfer using anti-KRAS G12D mTCR cells. Objective: To see if anti-KRAS G12D mTCR cells are safe and cause tumors to shrink. Eligibility: Adults ages 18-72 who have cancer with a molecule on the tumors that can be recognized by the study cells Design: Participants will be screened with medical history, physical exam, scans, photography, and heart, lung, and lab tests. An intravenous (IV) catheter will be placed in a large vein in the chest. Participants will have leukapheresis. Blood will be removed through a needle in an arm. A machine will divide the blood and collect white blood cells. The rest of the blood will be returned to the participant through a needle in the other arm. A few weeks later, participants will have a hospital stay. They will: - Get 2 chemotherapy medicines by IV over 5 days. - Get the changed cells through the catheter. Get up to 9 doses of a medicine to help the cells. They may get a shot to stimulate blood cells. - Recover in the hospital for up to 3 weeks. They will provide blood samples. Participants will take an antibiotic for at least 6 months. Participants will have several follow-up visits over 2 years. They will repeat most of the screening tests and may have leukapheresis. Participants blood will be collected for several years.


Clinical Trial Description

Background: - We generated an HLA-A11:01-restricted murine T-cell receptor (mTCR) that specifically recognizes the G12D-mutated variant of KRAS (and other RAS family genes), expressed by many human cancers and constructed a single retroviral vector that contains alpha and beta chains that confer recognition of this antigen when transduced into PBL. - In co-cultures with HLA-A11:01+ target cells expressing this mutated oncogene, mTCR transduced T-cells lyse target cells and secrete IFN-gamma with high specificity. Objectives: -Primary objectives: - Phase I: Determine the safety of administering PBL transduced with anti-KRAS G12D mTCR in concert with preparative lymphodepletion and high-dose interleukin-2 (IL-2; aldesleukin). - Phase II: Determine if anti-KRAS G12D mTCR-transduced PBL can mediate the regression of tumors harboring the RAS G12D mutation. Eligibility: - Patients must be/have: - Age greater than or equal to 18 years and less than or eqaul to 72 years - HLA-A*11:01 positive - Metastatic or unresectable RAS G12D-expressing cancer which has progressed after standard therapy (if available). - Patients may not have: - Allergies or hypersensitivities to high-dose aldesleukin, cyclophosphamide, or fludarabine. Design: - This is a phase I/II, single center study of PBL transduced with anti-KRAS G12D mTCR in HLA-A*11:01 positive patients with advanced solid tumors expressing G12D mutated RAS. - PBMC obtained by leukapheresis will be cultured in the presence of anti-CD3 (OKT3) and aldesleukin in order to stimulate T-cell growth. - Transduction is initiated by exposure of these cells to retroviral vector supernatant containing replication-incompetent virus encoding the anti-KRAS G12D mTCR. - All patients will receive a non-myeloablative, lymphodepleting preparative regimen of cyclophosphamide and fludarabine. - On Day 0, patients will receive their PBL transduced with the anti-KRAS G12D mTCR and will then begin high-dose aldesleukin. - A complete evaluation of lesions will be conducted approximately 6 weeks (plus-minus 2 weeks) after treatment. - The study will be conducted using a phase I/II Simon minimax design, with two separate cohorts for the Phase II component: Cohort 2a, patients with RAS G12D pancreatic cancer, and Cohort 2b, patients with RAS G12D non-pancreatic cancer. - A total of up to 70 patients may be required; approximately 24 patients in the Phase I portion of the study and 46 (21, plus an allowance of up to 2 non-evaluable per Phase II cohort) patients in the Phase II portion of the study. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03745326
Study type Interventional
Source National Institutes of Health Clinical Center (CC)
Contact NCI SB Immunotherapy Recruitment Center
Phone (866) 820-4505
Email irc@nih.gov
Status Recruiting
Phase Phase 1/Phase 2
Start date May 16, 2019
Completion date December 1, 2028

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