Purpose

A Phase 1, open label, dose escalation and expanded cohort study of P-MUC1C-ALLO1 in adult subjects with advanced or metastatic epithelial derived solid tumors, including but not limited to the tumor types listed below.

Conditions

Eligibility

Eligible Ages
Over 18 Years
Eligible Genders
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Males or females, Subjects ≥18 years with life expectancy >3 months - Must have a confirmed diagnosis of unresectable, locally advanced or metastatic epithelial-derived cancer, refractory to standard of care therapy or ineligible or refused other existing treatment options - Must have progressed during or after last therapy and have measurable disease - Must have an Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 1 or Karnofsky performance status ≥70% - Must have adequate vital organ function within pre-determined parameters - Must have archived tumor tissue available or consent to a biopsy collection - Must be willing to practice birth control - Must have a negative pregnancy test at screening and prior to initiating lymphodepletion chemotherapy or study drug administration - Must have recovered from toxicities due to prior therapies

Exclusion Criteria

  • Has inadequate venous access - Has an active second malignancy in addition to the studied malignancy, excluding low-risk neoplasms such as non-metastatic basal cell or squamous cell skin carcinoma - Is pregnant or lactating - Has a history of or active autoimmune disease - Has a history of significant central nervous system (CNS) disease, such as stroke, epilepsy - Has an active systemic (viral, bacterial, or fungal) infection - Has New York Heart Association (NYHA) Class III or IV heart failure, unstable angina, or a history of myocardial infarction or significant arrhythmia - Has any psychiatric or medical disorder that would preclude safe participation in and/or adherence to the protocol - Has received anticancer medications within 2 weeks of the time of initiating conditioning chemotherapy - Has received immunosuppressive medications within 2 weeks of administration of P-MUC1C-ALLO1, and/or expected to require them while enrolled in the study - Has received systemic corticosteroid therapy within 1 week of the administration of P-MUC1C-ALLO1 or is expected to require it during the course of the study - Has known CNS metastases or symptomatic CNS involvement - Has a history of significant liver disease or active liver disease - Has a history of known genetic predisposition to HLH/MAS

Study Design

Phase
Phase 1
Study Type
Interventional
Allocation
Non-Randomized
Intervention Model
Sequential Assignment
Intervention Model Description
Open label, 3 + 3 design of dose-escalating cohorts with open label, dose expansion at recommended phase 2 dose (RP2D)
Primary Purpose
Treatment
Masking
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
P-MUC1C-ALLO1 CAR-T cells (Single Dose - Arm A)
Single ascending dose cohorts, given in a single intravenous infusion of CAR-T cells, following conditioning chemotherapy regimen 1. Rimiducid may be administered as indicated.
  • Biological: P-MUC1C-ALLO1 CAR-T cells
    P-MUC1C-ALLO1 is an allogeneic CAR-T cell therapy designed to target cancer cells expressing MUC1-C.
  • Drug: Rimiducid
    Rimiducid (safety switch activator) may be administered as indicated.
Experimental
P-MUC1C-ALLO1 CAR-T cells (Multiple Dose - Arm B)
Cyclic administration of ascending dose cohorts, given in a single intravenous infusion of CAR-T cells, following conditioning chemotherapy regimen 1. Rimiducid may be administered as indicated.
  • Biological: P-MUC1C-ALLO1 CAR-T cells
    P-MUC1C-ALLO1 is an allogeneic CAR-T cell therapy designed to target cancer cells expressing MUC1-C.
  • Drug: Rimiducid
    Rimiducid (safety switch activator) may be administered as indicated.
Experimental
P-MUC1C-ALLO1 CAR-T cells (Single Dose - Arm C)
Single ascending dose cohorts, given in a single intravenous infusion of CAR-T cells, following conditioning chemotherapy regimen 2. Rimiducid may be administered as indicated.
  • Biological: P-MUC1C-ALLO1 CAR-T cells
    P-MUC1C-ALLO1 is an allogeneic CAR-T cell therapy designed to target cancer cells expressing MUC1-C.
  • Drug: Rimiducid
    Rimiducid (safety switch activator) may be administered as indicated.
Experimental
P-MUC1C-ALLO1 CAR-T cells (Multiple Dose - Arm D)
Cyclic administration of ascending dose cohorts, given in a single intravenous infusion of CAR-T cells, following conditioning chemotherapy regimen 2. Rimiducid may be administered as indicated.
  • Biological: P-MUC1C-ALLO1 CAR-T cells
    P-MUC1C-ALLO1 is an allogeneic CAR-T cell therapy designed to target cancer cells expressing MUC1-C.
  • Drug: Rimiducid
    Rimiducid (safety switch activator) may be administered as indicated.

Recruiting Locations

University of Kansas Cancer Center
Westwood, Kansas 66205

More Details

Status
Recruiting
Sponsor
Poseida Therapeutics, Inc.

Study Contact

Angie Schinkel
858-779-3103
clinicaltrials@poseida.com

Detailed Description

This is an open label, multi-center Phase 1 study that will follow a 3 + 3 design of dose-escalating cohorts of single and multiple doses of P-MUC1C-ALLO1 to determine a Recommended Phase 2 Dose (RP2D). P-MUC1C-ALLO1 is an allogeneic chimeric antigen receptor (CAR) T cell therapy designed to target cancer cells expressing Mucin1 cell surface associated C-Terminal (MUC1-C) antigen. Additional participants will be treated with P-MUC1C-ALLO1 at the determined RP2D. Following enrollment, subjects will be treated with P-MUC1C-ALLO1 and will undergo serial measurements of safety, tolerability and response. Rimiducid may be administered as indicated.

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.