Furthermore, claudin-6 positive tumors have shown promising efficacy of CAR T cell therapy in the recently published BNT-211-01 trial (NCT04503278). This represents a personalized therapeutic option for this tumor subtype.

P1, N=145, Recruiting, BioNTech Cell & Gene Therapies GmbH | Phase classification: P1/2 --> P1 | Trial completion date: Sep 2037 --> Jan 2040 | Trial primary completion date: Aug 2024 --> Jan 2027

P1/2, N=114, Recruiting, BioNTech Cell & Gene Therapies GmbH

A repeat of the dose escalation is ongoing and will identify a RP2D for pivotal trials. ClinicalTrials.gov Identifier: NCT04503278 .

P1/2, N=114, Recruiting, BioNTech Cell & Gene Therapies GmbH | Trial completion date: Sep 2036 --> Sep 2037 | Trial primary completion date: Aug 2023 --> Aug 2024

High expression of CLDN6 mRNA is associated with the dysregulation of distinct biological pathways regulating cell growth, proliferation, and cell-matrix interactions. Clinically, the expression of CLDN6 protein is a valuable adverse prognostic marker in EAC and GAC.

The safety profile in terms of CRS, ICANS and DLTs observed is in line with previously reported observations. We intend to present data on up to 42 pts, with a data cut-off of 10.09.2023.

Many types of anticancer drugs targeting CLDN6 have been developed, including antibody-conjugated drugs (ADC), monoclonal antibodies, bispecific antibodies, and chimeric antigen receptor T-cell immunotherapy (CAR-T). This paper briefly summarizes the structure, expression and function of CLDN6 in tumors, and reviews the current status and ideas of developing targeted CLDN6 anticancer drugs.

We intend to submit efficacy, safety and CAR T-cell pharmacokinetics data from 5 cohorts treated with 1x106, 1x107 or 1x108 CLDN6 CAR-T cells ± CARVac with a data cut-off of March 14th, 2023 from ≥17 treated patients as a late-breaking abstract. Clinical trial information: NCT04503278.

P1/2, N=96, Recruiting, BioNTech Cell & Gene Therapies GmbH | Trial primary completion date: Sep 2022 --> Aug 2023

The LNP-mRNA delivery system has advantages including having no integration in host genome, inexpensiveness, low toxicity and modifiability; on the other hand, it has certain disadvantages such as limited cell persistence caused by transient protein expression and limitations in preparation techniques. This article reviews the research advance in LNP-mRNA in vivo delivery system and its application in CAR-T cell therapy.

Patient-derived xenograft models were also created through intracranial injection of multiple ATRT patient cell lines, and ongoing work will evaluate locoregional administration of CLDN6-directed CAR T cells in orthotopic xenograft models to test in vivo efficacy. This work highlights the potential for targeting CLDN6 via CAR T cell therapy in patients with ATRT as a novel therapeutic strategy for these devastating tumors.

No abstract available

No abstract available

P1/2; N=36 --> 96

Furthermore, NBL-028 is designed upon a proprietary molecular scaffold with superior developability features, demonstrated by stability, yield and ease to purify. NBL-028 is currently at the stage of IND-enabling activities with the aim to enter clinical studies for treating Claudin 6 positive solid tumors in 1Q 2023.

CLDN6 CAR-T cells ± CARVac show an acceptable safety profile at doses tested and encouraging signs of clinical activity. Data from the completed dose escalation phase will be presented. Acknowledgements: BNT211-01 is funded by BioNTech Cell & Gene Therapies GmbH.Trial registration: Clinicaltrials.gov: NCT04503278.Ethics approval: Ethics & Institutional Review Board approvals were obtained from the respective participating countries prior to initiation of the trial.

The TGFβRII KO approach may become an indispensable tool in immunotherapy of solid tumors, as it may surmount one of the key negative regulatory signaling pathways in T-cells.

Updated data from open cohorts will be presented. Clinical trial identification NCT04503278.

Manageable cytokine release syndrome (CRS, grade 1-2, the latter managed with Tocilizumab) without any signs of neurotoxicity have been observed in both patients of part 1 DL2. Updated data from open cohorts and especially for combination with CARVac will be presented. Clinicaltrials gov: NCT04503278

"Robust engraftment of CLDN6 CAR-T cells and first signs of efficacy could already be observed in initial dose cohort. Enrollment into higher dose levels and cohorts for combination with CARVac is currently ongoing."

P1/2; N=36; Not yet recruiting; Sponsor:BioNTech Cell & Gene Therapies GmbH