First-in-Human Dose Expansion Study of XMT-1536 in Cancers Likely to Express NaPi2b

"XMT-1536 will be administered once every 28 days until disease progression, unacceptable toxicity, or either the patient or study physician determines it is in the best interest of the patient to discontinue participation in the study.~For sites participating in the sub-study, patients with platinum -resistant ovarian cancer will have the option to enroll in this sub-study to evaluate potential changes in the QTc interval following administration of XMT-1536"