Low-dose-rate brachytherapy as a primary treatment for localised and locally advanced prostate cancer: a systematic review of economic evaluations.

backgroundThis study supports a value-based approach to prostate cancer (PCa) treatment by systematically reviewing economic evaluations that compare the cost and cost-effectiveness of low-dose-rate brachytherapy (LDR-BT) with that of other treatment options for localised and locally advanced PCa.

methodsStudies published between 2008 and 2023 were searched for in MEDLINE, EMBASE and Tufts Medical Center's Cost-Effectiveness Analysis (CEA) Registry (Prospero protocol CRD42023-442027). Two reviewers independently screened the title and abstracts based on agreed inclusion and exclusion criteria, followed by full-text screening. The Drummond checklist was used to critically appraise the quality of the included studies.

resultsAfter screening 453 records, 36 were sought for retrieval and 14 eligible studies included. Of them, 11 compared treatments for low- and/or favourable intermediate-risk PCa, 2 compared options for unfavourable intermediate- and/or high-risk disease and 1 analysed treatments for both risk groups. Considerable heterogeneity was seen in the populations, perspectives, time horizons, costs and outcomes data used. If the oncological outcomes of standard treatment approaches are considered equivalent, LDR-BT was the most cost-effective type of radiation therapy (RT) in 9 (75%) of 12 studies, was more cost-effective than radical prostatectomy (RP) in 6 (67%) of 9 studies and, depending on the time horizon, was more cost-effective than active surveillance (AS) in 3 (60%) of 5 studies. LDR-BT was more cost-effective than high-dose-rate brachytherapy (HDR-BT) in all 4 (100%) of the studies that made this comparison and, overall, LDR-BT was the least costly of all active treatment options in 7 (50%) of the 14 studies.

conclusionThe available health economic evidence suggests that LDR-BT has significant cost advantages and an important role to play in the delivery of value-based PCa care. In the future these advantages could be challenged if radiotherapy favours ultrahypofractionated strategies such as stereotactic body radiation therapy (SBRT) and reduced fractionation in HDR-BT.