MDG1011

Preclinical studies demonstrated that MDG1011 displayed key 3S attributes of high specificity, sensitivity, and safety required for regulatory approval of a first-in-human (FIH) clinical study of patients with myeloid malignancies (CD-TCR-001: ClinicalTrials.gov Identifier: NCT03503968). MDG1011 IMP manufacturing was successful at 92%, even including heavily pretreated elderly patients with very advanced disease. The IMPs applied in nine patients all displayed antigen-specific functionality. Elsewhere, clinical study results for MDG1011 showed no dose-limiting toxicity and signs of biological and/or clinical activity in several patients.

P1/2, N=9, Terminated, Medigene AG | N=92 --> 9 | Trial completion date: Apr 2024 --> Jul 2022 | Recruiting --> Terminated | Trial primary completion date: Aug 2020 --> Jun 2022; The clinical trial is terminated after the completion of phase I without moving to Phase II.

Treatment was conducted with MDG1011 after lymphodepletion with fludarabine (25 mg/m² x 3d) and cyclophosphamide (300 mg/m² x 3d) in patients with HLA-A*02:01- and PRAME-positive r/r disease...Grade 1 cytokine release syndrome (CRS) occurred in 1 patient at DL2, grade 2 CRS in 1 patient at DL3 that was manageable with tocilizumab... In heavily pre-treated patients with advanced myeloid and lymphoid neoplasms, treatment with MDG1011 was generally safe and well tolerated up to 5x106 PRAME-specific TCR-T cells/kg. Clinical observations were corroborated by persistence of MDG1011 cells in PB and reductions in PRAME mRNA levels in PB and/or BM.