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Devimistat in Combination with Gemcitabine and Cisplatin in Biliary Tract Cancer: Preclinical Evaluation and Phase Ib Multicenter Clinical Trial (BilT-04).


ABSTRACT:

Purpose

Devimistat (CPI-613) is a novel inhibitor of tumoral mitochondrial metabolism. We investigated the effect of devimistat in vitro and in a phase Ib clinical trial in patients with advanced biliary tract cancer (BTC).

Patients and methods

Cell viability assays of devimistat ± gemcitabine and cisplatin (GC) were performed and the effect of devimistat on mitochondrial respiration via oxygen consumption rate (OCR) was evaluated. A phase Ib/II trial was initiated in patients with untreated advanced BTC. In phase Ib, devimistat was infused over 2 hours in combination with GC on days 1 and 8 every 21 days with a primary objective to determine the recommended phase II dose (RP2D). Secondary objectives included safety, overall response rate (ORR), progression-free survival (PFS), and overall survival (OS).

Results

In vitro, devimistat with GC had a synergistic effect on two cell lines. Devimistat significantly decreased OCR at higher doses and in arms with divided dosing. In the phase Ib trial, 20 patients received a median of nine cycles (range, 3-19). One DLT was observed, and the RP2D of devimistat was determined to be 2,000 mg/m2 in combination with GC. Most common grade 3 toxicities included neutropenia (n = 11, 55%), anemia (n = 4, 20%), and infection (n = 3, 15%). There were no grade 4 toxicities. After a median follow-up of 15.6 months, ORR was 45% and median PFS was 10 months (95% confidence interval, 7.1-14.9). Median OS is not yet estimable.

Conclusions

Devimistat in combination with GC is well tolerated and has an acceptable safety profile in patients with untreated advanced BTC.

SUBMITTER: Mohan A 

PROVIDER: S-EPMC10330233 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature

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Publications

Devimistat in Combination with Gemcitabine and Cisplatin in Biliary Tract Cancer: Preclinical Evaluation and Phase Ib Multicenter Clinical Trial (BilT-04).

Mohan Arathi A   Griffith Kent A KA   Wuchu Fulei F   Zhen David B DB   Kumar-Sinha Chandan C   Crysler Oxana O   Hsiehchen David D   Enzler Thomas T   Dippman Dominique D   Gunchick Valerie V   Achreja Abhinav A   Animasahun Olamide O   Choppara Srinadh S   Nenwani Minal M   Chinnaiyan Arul M AM   Nagrath Deepak D   Zalupski Mark M MM   Sahai Vaibhav V  

Clinical cancer research : an official journal of the American Association for Cancer Research 20230701 13


<h4>Purpose</h4>Devimistat (CPI-613) is a novel inhibitor of tumoral mitochondrial metabolism. We investigated the effect of devimistat in vitro and in a phase Ib clinical trial in patients with advanced biliary tract cancer (BTC).<h4>Patients and methods</h4>Cell viability assays of devimistat ± gemcitabine and cisplatin (GC) were performed and the effect of devimistat on mitochondrial respiration via oxygen consumption rate (OCR) was evaluated. A phase Ib/II trial was initiated in patients wit  ...[more]

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