Breast Cancer Clinical Trial
Official title:
Phase I/II Trial of Autologous Rapamycin-Resistant Th1/Tc1 (RAPA-201) Cell Therapy of PD-(L)1 Resistant Solid Tumors
The therapy of solid tumors has been revolutionized by immune therapy, in particular, approaches that activate immune T cells in a polyclonal manner through blockade of checkpoint pathways such as PD-1 by administration of monoclonal antibodies. In this study, the investigators will evaluate the adoptive transfer of RAPA-201 cells, which are checkpoint-deficient polyclonal T cells that represent an analogous yet distinct immune therapy treatment platform for solid tumors. RAPA-201 is a second-generation immunotherapy product consisting of reprogrammed autologous CD4+ and CD8+ T cells of Th1/Tc1 cytokine phenotype. First-generation RAPA-101, which was bred for resistance to the mTOR inhibitor rapamycin, demonstrated clear anti-tumor effects in multiple myeloma patients without any product-related adverse events. Second-generation RAPA-201, which have acquired resistance to the mTOR inhibitor temsirolimus, are manufactured ex vivo from peripheral blood mononuclear cells collected from solid tumor patients using a steady-state apheresis. RAPA-201 is also being evaluated for the therapy of relapsed, refractory multiple myeloma and was granted Fast Track Status by the FDA for this indication. The novel RAPA-201 manufacturing platform, which incorporates both an mTOR inhibitor (temsirolimus) and an anti-cancer Th1/Tc1 polarizing agent (IFN-alpha) generates polyclonal T cells with five key characteristics: 1. Th1/Tc1: polarization to anti-cancer Th1 and Tc1 subsets, with commensurate down-regulation of immune suppressive Th2 and regulatory T (TREG) subsets; 2. T Central Memory: expression of a T central memory (TCM) phenotype, which promotes T cell engraftment and persistence for prolonged anti-tumor effects; 3. Temsirolimus-Resistance: acquisition of temsirolimus-resistance, which translates into a multi-faceted anti-apoptotic phenotype that improves T cell fitness in the stringent conditions of the tumor microenvironment; 4. T Cell Quiescence: reduced T cell activation, as evidence by reduced expression of the IL-2 receptor CD25, which reduces T cell-mediated cytokine toxicities such as cytokine-release syndrome (CRS) that limit other forms of T cell therapy; and 5. Reduced Checkpoints: multiple checkpoint inhibitory receptors are markedly reduced on RAPA-201 cells (including but not limited to PD-1, CTLA4, TIM-3, LAG3, and LAIR1), which increases T cell immunity in the checkpoint-replete, immune suppressive tumor microenvironment. This is a Simon 2-stage, non-randomized, open label, multi-site, phase I/II trial of RAPA-201 T immune cell therapy in patients with advanced metastatic, recurrent, and unresectable solid tumors that have recurred or relapsed after prior immune therapy. Patients must have tumor relapse after at least one prior line of therapy and must have refractory status to the most recent regimen, which must include an anti-PD-(L)1 monoclonal antibody. Furthermore, accrual is limited to solid tumor disease types potentially amenable to standard-of-care salvage chemotherapy consisting of the carboplatin + paclitaxel (CP) regimen that will be utilized for host conditioning prior to RAPA-201 therapy. Importantly, carboplatin and paclitaxel are "immunogenic" chemotherapy agents whereby the resultant cancer cell death mechanism is favorable for generation of anti-tumor immune T cell responses. Thus, the CP regimen that this protocol incorporates is intended to directly control tumor progression and indirectly promote anti-tumor T cell immunity. The CP regimen is considered standard-of-care therapy for the following tumor types, which will be focused upon on this RAPA-201 protocol: small cell and non-small cell lung cancer; breast cancer (triple-negative sub-type or relapse after ovarian ablation/suppression); gastric cancer (esophageal and esophageal-gastric-junction adenocarcinoma; gastric adenocarcinoma; esophageal squamous cell carcinoma); head and neck cancer (squamous cell carcinoma of oral cavity, larynx, nasopharynx, and other sites); carcinoma of unknown primary; bladder cancer; and malignant melanoma. Protocol therapy consists of six cycles of standard-of-care chemotherapy (carboplatin + paclitaxel (CP) regimen) administered every 28 days (chemotherapy administered on cycles day 1, 8, and 15). RAPA-201 cells will be administered at a target flat dose of 400 X 10^6 cells per infusion on day 3 of cycles 2 through 6. A sample size of up to 22 patients was selected to determine whether RAPA-201 therapy, when used in combination with the CP regimen, represents an active regimen in solid tumors that are resistant to anti-PD(L)-1 checkpoint inhibitor therapy, as defined by a response rate (≥ PR) consistent with a rate of 35%. The first stage of protocol accrual will consist of n=10 patients; to advance to the second protocol accrual stage, RAPA-201 therapy must result in a tumor response (≥ PR) in at least 2 out of the 10 initial patients.
Status | Recruiting |
Enrollment | 22 |
Est. completion date | December 31, 2024 |
Est. primary completion date | January 1, 2024 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: 1. Male or female patients = 18 years of age. 2. Eastern Cooperative Oncology Group (ECOG) performance status of = 2. 3. Advanced metastatic, recurrent, and unresectable solid tumor that has relapsed after = one prior line of therapy. 4. Subject must have received prior therapy with disease-specific regimens that have been established to convey a clinical benefit. Alternatively, subject must have been offered such regimens and provided written documentation of refusal to receive such regimens. 5. Subject with solid tumors with genetic alterations and mutations (including but not limited to BRAF, BRCA, EGFR mutations, and ALK translocations) must have either received targeted therapy for such conditions or provided written documentation of refusal to receive such regimens. 6. Exposure to an anti-PD-(L)1 monoclonal antibody therapeutic in the most recent line of prior therapy. 7. Documented refractory status to the most recent regimen, which must include an anti-PD-(L)1 monoclonal antibody, as defined by lack of response after at least two cycles of therapy or relapse within 12-months of initiation of anti-PD-(L)1-containing therapy. 8. Subject must have a solid tumor type that is considered suitable for standard-of-care salvage chemotherapy consisting of the carboplatin + paclitaxel regimen that will be utilized for host conditioning prior to adoptive T cell therapy, specifically: small cell and non-small cell lung cancer; breast cancer (triple-negative sub-type or relapse after ovarian ablation/suppression); gastric cancer (esophageal and esophageal-gastric-junction adenocarcinoma; gastric adenocarcinoma; esophageal squamous cell carcinoma); head and neck cancer (squamous cell carcinoma of oral cavity, larynx, nasopharynx, and other sites); carcinoma of unknown primary; bladder cancer; and malignant melanoma. 9. Presence of measurable disease to permit monitoring by RECISTv1.1 Criteria. 10. Must have a potential source of autologous T cells potentially sufficient to manufacture RAPA-201 cells, as defined by a circulating absolute lymphocyte count (ALC) of = 300 cells/µL. 11. Patients must be = two weeks from last solid tumor cancer chemotherapy, major surgery, radiation therapy and/or participation in investigational trials. 12. Patients must have recovered from clinical toxicities (resolution of CTCAE (v5) toxicity to a value of = 2). 13. Ejection fraction (EF) by MUGA or 2-D echocardiogram within institution normal limits, with an EF level of = 40%. 14. Calculated creatinine clearance of = 60 mL/min/1.73 m^2. 15. Aspartate aminotransferase (AST) and Alanine aminotransferase (ALT) = 3 x upper limit of normal. 16. ANC (Absolute neutrophil count) of = 1500 cells/µL. 17. Platelet count = 100,000 cells/µL. 18. Hemoglobin count = 8 grams/µL. 19. Bilirubin = 1.5 mg/dL (except if due to Gilbert's disease). 20. Corrected DLCO = 50% (Pulmonary Function Test) 21. No history of abnormal bleeding tendency (as defined by any inherited coagulation defect, or history of internal bleeding). 22. Voluntary written consent must be given before performance of any study related procedure not part of standard medical care, with the understanding that consent may be withdrawn by the patient at any time without prejudice to future medical care. Exclusion Criteria: 1. Other active malignancy (except non-melanoma skin cancer). 2. Life expectancy < 4 months. 3. Seropositivity for HIV, hepatitis B, or hepatitis C, unless such conditions are in stable condition using adequate treatment. 4. Uncontrolled hypertension. 5. History of cerebrovascular accident within 6 months of enrollment. 6. Myocardial infarction within 6 months prior to enrollment. 7. NYHA class III/IV congestive heart failure. 8. Uncontrolled angina/ischemic heart disease. 9. Cancer metastasis to the central nervous system, unless such metastasis has been adequately treated. 10. Pregnant or breastfeeding patients. 11. Patients of childbearing age, or males who have a partner of childbearing potential, who are unwilling to practice contraception. 12. Patients may be excluded at the discretion of the PI or if it is deemed that allowing participation would represent an unacceptable medical or psychiatric risk. |
Country | Name | City | State |
---|---|---|---|
United States | Hackensack University Medical Center | Hackensack | New Jersey |
Lead Sponsor | Collaborator |
---|---|
Rapa Therapeutics LLC |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Other | T Cell Immune Reconstitution | To characterize the phenotype of immune T cell reconstitution, as defined by peripheral blood T cell count, which will be determined by flow cytometry using the CD3+ marker. CD3+ T cell count will be compared pre-treatment (at study entry) and at one-year after study start. | One (1) year after study start. | |
Primary | Safety of RAPA-201 Cell Therapy | To determine the safety of RAPA-201 cell therapy when used in combination with a carboplatin plus paclitaxel (CP) standard-of-care chemotherapy regimen. Specifically, the treatment will be determined to be safe if the following parameters are met: (Metric #1) using the metric of "unresolved grade 3 toxicity attributable to the RAPA-201 cell therapy": for positive determination of safety, this metric must occur in 3 or fewer patients out of the initial 10 patients; (Metric #2) using the metric of "grade 4 non-hematologic toxicity that is probably attributable to RAPA-201 cell therapy": for positive determination of safety, this metric must occur in 1 or fewer patients out of the initial 10 patients; and (Metric #3) using the metric of "grade 5 toxicity that is probably attributable to RAPA-201 cell therapy": for positive determination of safety, this metric must occur in 1 or few patients out of the initial 10 patients. | Completion of RAPA-201 Therapy as Defined by the End-of-Treatment Visit, which occurs on average at 6-months after treatment initiation | |
Secondary | Overall Response Rate | To determine the overall RECISTv1.1 criteria response rate (partial response or better) of autologous RAPA-201 cells and standard-of-care chemotherapy (carboplatin + paclitaxel) in patients with solid tumors resistant to PD-(L)1. | One (1) year after the last dose of RAPA-201 cells. | |
Secondary | Progression Free Survival (PFS) and Overall Survival (OS) | To characterize the effect of therapy on solid tumor disease control, as measured by progression free survival (PFS) and overall survival (OS). | One (1) year after the last dose of RAPA-201 cells. | |
Secondary | Quality of Life (QOL) | To evaluate effect of therapy on quality of life (QOL) using the Short Form-36 Survey. | One (1) year after the last dose of RAPA-201 cells. |
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