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Prevention of radiation-induced liver toxicity after interstitial HDR brachytherapy by pentoxifylline and ursodeoxycholic acid: patient compliance and outcome in a randomized trial. | LitMetric

AI Article Synopsis

Article Abstract

Aim: To investigate the impact of pentoxifylline (PTX, 3 × 400 mg per day) and ursodeoxycholic acid (UDCA, 3 × 250 mg per day) administered for 12 weeks on radiation-induced liver toxicity.

Materials And Methods: Inclusion criteria were liver metastases of extrahepatic malignancies undergoing HDR-BT. 36 patients were prospectively randomized to the medication (N = 18) or control arm (N = 18) and follow-up by hepatobiliary magnetic resonance imaging (MRI) was scheduled 6 and 12 weeks after local ablation by HDR-BT. We determined the threshold doses of fRILI by image fusion of MRI with the dosimetry data.

Results: 32 patients completed the study schedule. Per-protocol treatment was limited to 8 patients in the medication group and 16 patients in the control group. 22 adverse events of any grade likely or certainly related to PTX were recorded in 12 patients leading to the discontinuation of the study medication in 7 patients and to a dose reduction of PTX in 2 patients. In the per-protocol population, statistical analysis failed to prove a reduction of fRILI 6 and 12 weeks after HDR-BT. The incidence of adverse effects attributed to PTX (70.6%) was well above the data found in the literature for its approved indication.

Conclusion: The study endpoint was not met mainly attributed to the low statistical power of the small per-protocol cohort. Independently, PTX cannot be recommended for the reduction of radiation-induced liver toxicity in oncologic patients undergoing HDR-BT of liver metastases. Further studies might focus on a combination of UDCA with other potential drugs to help establish a preventive and tolerable regimen.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10374685PMC
http://dx.doi.org/10.1007/s00432-023-04832-wDOI Listing

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