A Phase 2 Study of BT5528 in Patients With Metastatic Pancreatic Ductal Adenocarcinoma

Inclusion Criteria * At least 18 years of age at the time of signature of the informed consent form * Measurable disease as defined by RECIST v1.1 * Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1 * Life expectancy of at least 12 weeks * Histologically confirmed metastatic pancreatic ductal adenocarcinoma (PDAC) * Participants must have failed only 1 prior line of therapy with evidence of radiographic progression. Neoadjuvant or adjuvant systemic therapy may count as the first line if the participant progressed less than 6 months from the end of systemic therapy. Prior treatment with KRAS inhibitors is permitted * Participants must have sufficient tumor tissue (fresh or archived) available for analysis of EphA2 tumor expression and other biomarkers * Adequate organ function (hematologic, renal, and hepatic) * Negative pregnancy test for participants of childbearing potential (POCBP) * Must be willing and able to comply with the protocol and study procedures Exclusion Criteria * Chemotherapy or radiotherapy within 14 days prior to the first dose of study treatment * Experimental treatments within 28 days or 5 half-lives, whichever is longer, of first dose of nuzefatide study treatment * Prior treatment with taxane therapy (e.g., paclitaxel) for pancreatic cancer or prior treatment with any MMAE-containing agent * Known microsatellite instability-high (MSI-H) status and are eligible for immune checkpoint inhibitor therapy * Prior toxicities must have resolved to Grade 1 per National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) v6.0 * Untreated central nervous system (CNS) metastases Note: Additional protocol defined Inclusion/Exclusion criteria apply