Atara Biotherapeutics Inc. is keeping the faith and figuring out next steps with its next-generation, mesothelin-directed CAR T-cell therapies after Bayer AG ended their exclusive worldwide licensing agreement, signed in late 2020. The setup included funding and development of ATA-3271, an armored allogeneic T-cell immunotherapy, and an autologous version, ATA-2271, for high mesothelin-expressing tumors such as malignant pleural mesothelioma and non-small-cell lung cancer.