1. Relacorilant plus nab-paclitaxel for the treatment of metastatic pancreatic ductal adenocarcinoma: results from the open-label RELIANT study.
- Author
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Borazanci, Erkut, Bahary, Nathan, Chung, Vincent, Huyck, Timothy, Kio, Ebenezer, Chiorean, Elena, Skeel, Roland, Alese, Olatunji, Cardin, Dana, Fountzilas, Christos, Hanna, Wahid, Leal, Alexis, Lee, Valerie, Noonan, Anne, Philip, Philip, Wainberg, Zev, Pashova, Hristina, Mann, Grace, and Oberstein, Paul
- Subjects
PDAC ,metastatic pancreatic cancer ,nab-paclitaxel ,relacorilant ,Humans ,Paclitaxel ,Albumins ,Female ,Male ,Carcinoma ,Pancreatic Ductal ,Middle Aged ,Aged ,Pancreatic Neoplasms ,Antineoplastic Combined Chemotherapy Protocols ,Adult ,Neoplasm Metastasis ,Aged ,80 and over - Abstract
BACKGROUND: Modulation of glucocorticoid receptor (GR) activity in tumor cells enhances chemotherapy efficacy. We evaluated the selective GR modulator relacorilant plus nab-paclitaxel in patients with metastatic pancreatic ductal adenocarcinoma (mPDAC) who had received at least 2 prior therapy lines. PATIENTS AND METHODS: In this open-label, single-arm, phase III study, patients received once-daily oral relacorilant (100 mg, titrated to 150 mg in 25 mg increments/cycle) and nab-paclitaxel (80 mg/m2) on days 1, 8, and 15 of 28-day cycles. The primary efficacy endpoint was objective response rate (ORR) by blinded independent central review. Progression-free survival (PFS), overall survival (OS), target gene modulation, and safety were also assessed. RESULTS: Of 43 patients enrolled, 31 were evaluable for ORR (12 did not reach first postbaseline radiographic assessment). An interim analysis to assess whether ORR was ≥10% showed no confirmed responses and the study was discontinued. Two (6.5%) patients attained unconfirmed partial responses and 15 (48.4%) had stable disease. Fourteen of 31 (45.2%) patients had reductions in target lesion size, despite prior nab-paclitaxel exposure in 12 of the 14. Median PFS and OS were 2.4 months (95% CI, 1.4-4.2) and 3.9 months (95% CI, 2.8-4.9), respectively. The most common adverse events were fatigue and nausea. RNA analysis confirmed that relacorilant plus nab-paclitaxel suppressed 8 cortisol target genes of interest. CONCLUSION: Relacorilant plus nab-paclitaxel showed modest antitumor activity in heavily pretreated patients with mPDAC, with no new safety signals. Studies of this combination in other indications with a high unmet medical need are ongoing.
- Published
- 2024