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Hepatic Arterial Chemotherapy With Raltitrexed and Oxaliplatin Versus Standard Chemotherapy in Unresectable Liver Metastases From Colorectal Cancer After Conventional Chemotherapy Failure (HEARTO): A Randomized phase-II Study

Hepatic Arterial Chemotherapy With Raltitrexed and Oxaliplatin Versus Standard Chemotherapy in Unresectable Liver Metastases From Colorectal Cancer After Conventional Chemotherapy Failure (HEARTO): A Randomized phase-II Study

Francois Ghiringhelli, Julie Vincent, Leila Bengrine, Christophe Borg, Jean Louis Jouve, Romaric Loffroy, Boris Guiu, Julie Blanc, Aurélie Bertaut

J Cancer Res Clin Oncol. 2019 Sep;145(9):2357-2363.

PMID: 31273511

Abstract:

Background:
Hepatic arterial infusion (HAI) of chemotherapy could be used in patients with liver-only metastatic colorectal cancer (mCRC) to fight against chemoresistance. We previously reported the efficacy of raltitrexed plus oxaliplatin (HAI) in a retrospective series. We performed a randomized two-stage phase-II study to evaluate the efficacy of HAI of the combination of raltitrexed and oxaliplatin in refractory mCRC with only liver metastases in comparison with standard of care.
Patients and methods:
Eligible patients had unresectable mCRC and were refractory or intolerant to fluoropyrimidine, irinotecan, oxaliplatin, anti-VEGF therapy, and anti-EGFR therapy (for tumors with wild-type KRAS). Patients were randomized between HAI raltitrexed (3 mg/m2 over 1 h) followed by oxaliplatin (130 mg/m2 over 2 h) every 3 weeks and standard of care in a 2:1 ratio. A total of 57 patients (38 in the experimental arm and 19 in the standard of care arm) were to be included. The main objective was to demonstrate 6-month PFS of 45% by intention-to-treat analysis in the experimental arm, compared to theoretical PFS of 20%, with a unilateral alpha risk of 5% and beta risk of 10%.
Results:
After inclusion of 27 patients, the trial was terminated due to insufficient accrual. In the experimental arm, 11 and 4 patients experienced grade 3 and 4 toxicities, respectively. The most frequent grade 3-4 toxicities were neutropenia, liver toxicity, and abdominal pain. Median progression-free survival was 6.7 months (95% Confidence Interval; 3.9-7.2) in the HAI group and 2.2 months (95% CI 1.2-4.3) with standard of care [HR 0.32 (95% CI 0.14-0.76), p = 0.01]. Median overall survival did not differ between the two groups, at 11.2 months (95% CI 4.8-17.6) for the HAI group and 11.9 months (95% CI 2.8-14.3) for standard of care [HR 0.86 (95% CI 0.36-2.04), p = 0.73].
Conclusion:
Although stopped prematurely, this randomized trial provides evidence for the benefit and safety of HAI of a combination of raltitrexed and oxaliplatin in liver-only mCRC with chemoresistant disease.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
IAR4241462	Raltitrexed			Price

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