IMAB362/Zolbetuximab, a first-in-class IgG1 antibody directed against the cancer-associated gastric-lineage marker CLDN18.2, has recently been reported to have met its primary endpoint in two phase 3 trials as a first-line treatment in combination with standard of care chemotherapy in CLDN18.2-positive Her2 negative advanced gastric cancer. BNT141 administration did not perpetrate mortality, clinical signs of toxicity, or gastric pathology in animal studies. A phase 1/2 clinical trial with BNT141 mRNA-LNP has been initiated in advanced CLDN18.2-expressing solid cancers (NCT04683939).
The resulting antibody is sequence identical to IMAB362, a CLDN18.2-targeted antibody that provided clinical benefit as an add-on to chemotherapy in the Phase III SPOTLIGHT trial (Shitara et al.J Clin Oncol...The trial comprises 3 parts: dose escalation with BNT141 as monotherapy, dose escalation with BNT141 in combination with nab-paclitaxel and gemcitabine, and dose expansion...Sites in Spain, Portugal, Germany, Denmark, Netherlands and the UK will be opened in 2023. Clinical trial information: NCT04683939.