ACTengine® IMA203/IMA203CD8 as Monotherapy or in Combination With Nivolumab in Recurrent and/or Refractory Solid Tumors

Inclusion Criteria

• Patients must have recurrent/progressing and/or refractory solid tumors and must have received or not be eligible for all available indicated standard of care treatment.
• Eastern Cooperative Oncology Group (ECOG) performance status 0-1
• HLA-A*02:01 positive
• For patients with ovarian/fallopian tube cancer only: Patients must have confirmed diagnosis of high-grade serous or endometrioid epithelial ovarian cancer (EOC), primary peritoneal cancer, or fallopian tube cancer.
• For patients with endometrial carcinoma only: Patients must have a histologically confirmed diagnosis of recurrent or persistent endometrial carcinoma.
• Measurable disease according to RECIST 1.1
• Adequate selected organ function per protocol
• Patient's tumor must express tumor antigen by "IMADetect® RT-qPCR. Retrospective testing will be required for patients that qualify.
• Life expectancy more than 5 months
• Female patient of childbearing potential must use adequate contraception prior to study entry until 12 months after the infusion of IMA203/IMA203CD8
• Male patient must agree to use effective contraception or be abstinent while on study and for 6 months after the infusion of IMA203/IMA203CD8
• The patient must have recovered from any side effects of prior therapy to Grade 1 or lower prior to lymphodepletion.

Exclusion Criteria

• History of other malignancies (except for adequately treated basal or squamous cell carcinoma or carcinoma in situ) within the last 3 years
• Pregnant or breastfeeding
• Serious autoimmune disease Note: At the discretion of the investigator, these patients may be included if their disease is well controlled without the use of immunosuppressive agents.
• History of cardiac conditions as per protocol
• Prior stem cell transplantation or solid organ transplantation
• Concurrent severe and/or uncontrolled medical disease that could compromise participation in the study
• History of or current immunodeficiency disease or prior treatment compromising immune function at the discretion of the treating physician
• Positive for HIV infection or with active hepatitis B virus (HBV) or active hepatitis C virus (HCV) infection.
• Patients with LDH greater than 2.0-fold ULN.
• Any condition contraindicating leukapheresis, lymphodepletion, low-dose IL-2, and/or IMA203/IMA203CD8 treatment
• Patients with active brain metastases
• Concurrent treatment in another clinical trial.
• For nivolumab treatment, patients must not have a history of severe immune-related toxicities, defined as any Grade 3 or 4 toxicities related to prior PD1/PD-L1 inhibitor therapy (e.g., atezolizumab, pembrolizumab or nivolumab etc.). Other protocol defined inclusion/exclusion criteria could apply