“We are delighted to announce THE-349 as the Company’s second development candidate and we look forward to evaluating its potential in patients with EGFR-mutant NSCLC,” said William Shakespeare, Ph.D., President of Research and Development at Theseus. “Clonal heterogeneity in patients who develop resistance to osimertinib is complex, and we believe a single EGFR inhibitor capable of targeting all major mutant forms of EGFR activating and resistance mutations is the optimal way to address this urgent medical need.”