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RAPA-201 cells will be administered at a target flat dose of 400 x 10\^6 cells per infusion.

Autologous Rapamycin-Resistant Th1/Tc1 Cells

RAPA-201 Rapamycin Resistant T Cells

Carboplatin + Paclitaxel Regimen (CP Regimen)

Chemotherapy Prior to RAPA-201 Therapy

Daniel Fowler, M.D.

Jennifer Sunga - Regulatory Affairs Associate

Chelsea McCabe, CCRP

Martin Gutierrez, M.D.

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.

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 a reprogrammed T cell population termed RAPA-201 cells, which are checkpoint-deficient polyclonal T cells that represent an analogous yet distinct treatment platform for solid tumor immune therapy.

RAPA-201 is a second-generation T cell immunotherapy product that is comprised of autologous CD4+ and CD8+ T cells of Th1/Tc1 cytokine phenotype. The first-generation RAPA-101 product, which was bred for resistance to the mTOR inhibitor rapamycin and developed for therapy of multiple myeloma, demonstrated clear anti-tumor effects without any product-related adverse events. The second-generation RAPA-201 cells, 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 cells are 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 method of RAPA-201 manufacturing, which incorporates both an mTOR inhibitor (temsirolimus) and an anti-cancer Th1/Tc1 polarizing agent (IFN-alpha) generates a polyclonal T cell population with the following five key characteristics:

1. Th1/Tc1: polarization to the 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 necessary 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 the chance of 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 multi-site phase I/II study evaluating RAPA-201 cells in up to 22 patients with relapsed solid tumors who have disease progression after anti-PD1 pathway monoclonal antibody therapy. The study will evaluate adoptive T cell therapy using autologous rapamycin-resistant Th1/Tc1 cells (RAPA-201) in the context of a standard-of-care chemotherapy regimen comprised of carboplatin plus paclitaxel (CP Regimen). The study will only accrue patients with solid tumor types that support use of the CP Regimen as a salvage therapy. Importantly, carboplatin and paclitaxel are considered "immunogenic" chemotherapy whereby the resultant cancer cell death mechanism is favorable for the generation of anti-tumor immune T cell responses. Therefore, the CP regimen that this protocol incorporates is intended to both 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 therefore 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.

To be eligible for the protocol, a subject will be required to have a circulating absolute lymphocyte count (ALC) of ≥ 300 cells per microliter. This parameter will help ensure that a sufficient number of autologous RAPA-201 cells can be manufactured from a steady-state apheresis product. Once the apheresis product has been received at the manufacturing site, the subject can initiate the first cycle of the CP Regimen, which will be administered over a 28-day interval.

Within 10 days after positive determination of study eligibility (and subject enrollment), two key actions will occur: (1) T cells will be collected by steady-state apheresis and sent to the manufacturing site at Rapa Therapeutics; (2) and the patient will start Cycle 1 of the CP Regimen (with a window of up to 7 calendar days to begin).

The Carboplatin-Paclitaxel (CP) regimen will be given alone for Cycle 1 and in combination with RAPA-201 cells for Cycles 2-6. After the completion of the treatment portion of the study, the subject will enter the follow-up component that will last for 6 months.

Cycle 1 of the CP Regimen will be a 28-day cycle, which will allow for time to manufacture the RAPA-201 cell product. According to standard-of-care practice, the carboplatin and paclitaxel will be administered on days 1, 8, and 15 of each cycle. Each cycle, beginning with Cycle 1, may be delayed or extended for up to four weeks, if needed for various reasons, including: logistical considerations, resolution of adverse events, or if there is a delay in RAPA-201 manufacturing. Requests for using additional time between cycles, other than the visit windows specified in the Schedule of Events, should be approved by the Medical Monitor.

Cycles 2-6 will also be 28-day cycles but will include both the CP Regimen plus the infusion of RAPA-201 cells at a target flat dose of 400 X 10\^6 cells per infusion.

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 achieving 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 stage of protocol accrual, RAPA-201 therapy must result in a tumor response (≥ PR) in at least 2 out of the 10 initial patients.

Simon 2-stage, non-randomized, open label, multi-site, phase I/II trial

RAPA-201 Therapy of Solid Tumors

Phase I/II Trial of Autologous Rapamycin-Resistant Th1/Tc1 (RAPA-201) Cell Therapy of PD-(L)1 Resistant Solid Tumors

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.

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.

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.

To characterize the effect of therapy on solid tumor disease control, as measured by progression free survival (PFS) and overall survival (OS).

To evaluate effect of therapy on quality of life (QOL) using the Short Form-36 Survey.

Rapa Therapeutics LLC

Docetaxel

Fluorouracil

Cisplatin

Tubulin Modulators

Antimitotic Agents

Taxotere/Cisplatin/5-FU x 3 cycles (3 weeks per cycle or 9 weeks total), 1 - 2 weeks, Taxotere/Cisplatin/5-FU x 3 cycles (3 weeks per cycle or 9 weeks total)

Taxotere, Cisplatin, and 5-FU

Lorenzo Ferri

Steven Ades

Penny Chipman

Crystal Lameira

The primary purpose of the study is to determine the impact of chemotherapy on the ability of your surgeon to completely remove the cancer as well as the impact on your survival. Furthermore the investigators will be assessing the side effects of this chemotherapy strategy. Finally the investigators will determine the ability of specialized imaging technology (PET scan) to document and predict the response of the tumor to this chemotherapy.

Standard therapy for patients with your condition usually consists of surgery (removal of the tumor) followed by combination chemotherapy and radiotherapy. More recently, standard options available to patients with cancer of the stomach or lower esophagus have been expanded to include chemotherapy without radiotherapy prior to and following surgery. While it is believed that chemotherapy prior to surgery is a good option for patients with stomach, it is not known what is the optimal chemotherapy regimen to offer patients prior to surgery to improve the likelihood of cure while limiting side-effects to patients.

Phase II Study of Neoadjuvant Taxotere, Cisplatin, and 5-Fluorouracil in Patients With Gastric or Gastroesophageal Junction Adenocarcinoma

McGill University

Dr. Lorenzo Ferri

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
RAPA-201 Therapy of Solid Tumors	NCT05144698	Solid Tumor Breast Cancer Small Cell and ... Triple Negative... Gastric Cancer Esophageal Aden... Gastric Junctio... Esophageal Squa... Head and Neck C... Squamous Cell C... Squamous Cell C... Squamous Cell C... Squamous Cell C... Carcinoma of Un... Bladder Cancer Malignant Melan...	RAPA-201 Rapamy... Chemotherapy Pr...	18 Years -	Rapa Therapeutics LLC
Phase II Study of Neoadjuvant Taxotere, Cisplatin, and 5-Fluorouracil in Patients With Gastric or Gastroesophageal Junction Adenocarcinoma	NCT00763646	Gastric Junctio... Gastroesophagea...	Taxotere, Cispl...	19 Years - 80 Years	McGill University

Spots Global Cancer Trial Database for gastric junction adenocarcinoma