The purpose of the first part of this study, the Dose Escalation part, is to study and identify the highest tolerable safe dose of MORAb-202. The purpose of the Expansion part is to further investigate how the different tumor types being studied respond to the study drug and to gather more information on its safety and effectiveness. This study will enroll patients with triple-negative breast cancer (TNBC), endometrial cancer (EC), non-small cell lung cancer (NSCLC, adenocarcinoma), and ovarian cancer. If it is determined that you meet all of the study entry requirements, you will get an...