Mersana Therapeutics, Inc. announced that after a strategic evaluation the Company will prioritize its resources to focus on the advancement of XMT-1536, a first-in-class ADC candidate targeting NaPi2b. As a result, Mersana and its partner, Takeda, plan to terminate the co-development collaboration for XMT-1522. Mersana will work with investigators to ensure that patients benefitting from XMT-1522 will continue to have access to the therapy as needed.