This is a 2-part, Phase 2 study to evaluate the safety, tolerability, dosing, pharmacokinetics (PK), and efficacy of relacorilant in combination with nab-paclitaxel and gemcitabine in chemotherapy-naïve patients with metastatic pancreatic adenocarcinoma (PDAC).

This study will include 2 parts. In Part 1 (dose finding), approximately 6 patients will be enrolled to individual dose-finding cohorts. Cohorts will receive various dose concentrations of relacorilant, nab-paclitaxel, and gemcitabine at various dosing schedules. In all dose-finding cohorts, relacorilant will be administered orally under fed conditions, once daily for 3 days on the day before (excluding Cycle 1 Day -1), the day of, and the day after nab-paclitaxel and gemcitabine. Enrollment will be paused after each cohort has been filled until the safety review committee (SRC) provides recommendations. If maximum tolerated dose (MTD) criteria are not met in a cohort, then either a dose-finding cohort at a more intense dose and/or schedule may be enrolled, or a dose and schedule at/below the MTD may be selected as the optimal dose and schedule, and Part 2 may be initiated. If MTD criteria are met, then a dose-finding cohort at a less intense dose and/or schedule may be enrolled, or dose-finding may end without proceeding to Part 2.

In Part 2 (expansion), each patient will receive the optimal dose and schedule of relacorilant, nab-paclitaxel, and gemcitabine as identified in Part 1. Analysis of Part 2 will include data for patients from Part 1 who were enrolled in the optimal dose and schedule used in Part 2.

Inclusion Criteria:

• Signed and dated informed consent form prior to screening procedures
• Histologic diagnosis or cytologic diagnosis of pancreatic adenocarcinoma (PDAC)
• Initial diagnosis of metastatic disease occurred ≤9 weeks prior to enrollment in the study
• Life expectancy of ≥3 months
• Radiographic confirmation of metastatic disease with at least 1 distant tumor metastasis measurable on radiology imaging per RECIST version 1.1 criteria
• Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1
• Able to provide informed consent and comply with protocol requirements
• Able to swallow and retain oral medication and does not have uncontrolled emesis
• Has adequate gastrointestinal absorption
• Received no prior systemic anticancer chemotherapy to treat metastatic PDAC. Treatment of PDAC with a single agent RAS inhibitor is permitted.
• If a patient received prior treatment of PDAC with chemotherapy, disease progression must have occurred >12 months after completing the last dose, and no persistent treatment-related toxicities can be present.
• Adequate organ function
• Negative pregnancy test for patients of childbearing potential
• Agree to use protocol defined precautions to avoid pregnancy

Exclusion Criteria:

• Any major surgery within 4 weeks prior to enrollment

• Prior treatment as follows:

  1. Radiotherapy, surgery, chemotherapy, immunotherapy, investigational therapy for the treatment of metastatic disease
  2. Systemic, inhaled, or prescription strength topical corticosteroids within 5 times the half-life of the corticosteroid used prior to first dose of study drug

• Received gemcitabine or nab-paclitaxel to treat their PDAC

• Known germline or somatic breast cancer gene (BRCA) mutation

• Peripheral neuropathy from any cause >Grade 1

• Medical conditions requiring chronic or frequent treatment with corticosteroids

• History of severe hypersensitivity or severe reaction to any of study drugs or their excipients

• Concurrent treatment with mifepristone or other glucocorticoid receptor modulators.

• Uncontrolled condition(s) which, may confound the results of the trial or interfere with the patient's safety or participation

• Active infection with HIV, hepatitis C or hepatitis B virus

• Known untreated parenchymal brain metastasis or uncontrolled central nervous system metastases

• History of other malignancy within 3 years prior to enrollment

• Taking protocol-prohibited medications

• Concurrent treatment with other investigational treatment studies for cancer

• Has received a live vaccine within 30 days prior to the study start date