Table of contents
- Trial overview
- Who can participate
- Trial phases and design
- What the trials measure
- Main study details
- Key patient terms
Trial overview
These clinical trials are studying AUTOLOGOUS T-CELLS TRANSDUCED WITH THE LENTIVIRAL LV-R11KEA ENCODING T-CELL RECEPTOR TARGETING PATIENT-SPECIFIC TUMOR-ASSOCIATED ANTIGENS in cancer patients.[1] The data provided show two authorised interventional trials, one in solid tumors and one in cutaneous malignant melanoma.[1][2]
The first study, NCT03686124, is a Phase 1/2 trial in solid tumors.[1] It evaluates the treatment as monotherapy and also in combination with nivolumab, which is named in the trial record.[1]
The second study, NCT06743126, is a Phase 3 trial in previously treated, unresectable or metastatic cutaneous melanoma.[2] It compares ACTengine® IMA203 with the investigator’s choice of treatment.[2]
Who can participate
Based on the trial records, the target groups are patients with solid tumors in one study and people with previously treated, unresectable or metastatic cutaneous melanoma in the other.[1][2] “Unresectable” means the cancer cannot be removed with surgery, and “metastatic” means it has spread to other parts of the body.
The provided data do not list all detailed entry rules, such as age limits or laboratory requirements.[1][2] For that reason, the clearest way to describe participation is by the cancer types named in each study.[1][2]
Trial phases and design
NCT03686124 is a Phase 1/2 trial.[1] Phase 1 usually looks first at safety and dose, while Phase 2 looks more closely at early signs that the treatment may work.[1]
NCT06743126 is a Phase 3 trial.[2] Phase 3 studies are larger and compare one treatment with other available options to see how well it performs in a real treatment setting.[2]
Both studies are interventional, which means the research team gives a treatment and then measures the results.[1][2]
What the trials measure
The Phase 1/2 trial measures treatment-emergent adverse events, adverse events of special interest, serious treatment-emergent adverse events, and dose-limiting toxicities.[1] These are ways to track safety and whether side effects are serious enough to limit treatment.[1]
The same study also measures objective response rate in Phase 2, using RECIST 1.1 rules and central review.[1] This tells researchers how many patients have a complete response or partial response, meaning the cancer disappears or shrinks.[1]
The Phase 3 melanoma trial measures progression-free survival, checked by a Blinded Independent Central Review using RECIST 1.1.[2] This endpoint shows how long patients live without the cancer getting worse.[2]
Main study details
NCT03686124 includes 543 participants and is authorised.[1] Its brief summary says the study aims to evaluate safety and tolerability of ACTengine® IMA203/IMA203CD8 as monotherapy or with nivolumab, determine the maximum tolerated dose and/or recommended Phase 2 dose, and assess anti-tumor activity of IMA203.[1]
NCT06743126 includes 384 participants and is also authorised.[2] Its brief summary says the goal is to evaluate the efficacy of IMA203 compared with control treatment chosen by the investigator.[2]
The trial records also list the treatment options used in the comparison arm of the melanoma study, including nivolumab, paclitaxel, temozolomide, paclitaxel albumin-bound, carboplatin, pembrolizumab, ipilimumab, dacarbazine, and Opdualag.[2] These are listed as the control choices in the study record, not as the main focus of this article.[2]
Key patient terms
Safety: whether the treatment causes problems or unwanted effects during the study.[1]
Tolerability: how well patients can receive the treatment without major difficulty.[1]
Monotherapy: treatment used alone, not with another study drug.[1]
Combination therapy: treatment given together with another drug, such as nivolumab in the Phase 1/2 study.[1]
Maximum tolerated dose: the highest dose that can be given without causing too many serious side effects.[1]
Recommended Phase 2 dose: the dose chosen for later testing based on early safety results.[1]
Anti-tumor activity: signs that the treatment may help fight the cancer.[1]
Investigator’s choice: the doctor or study team chooses from allowed treatment options in the trial.[2]



