Trial reportPLoS neglected tropical diseases2026
Adjunctive Varespladib after antivenom administration for snakebite: A phase II randomized clinical trial.
Trial report in PLoS neglected tropical diseases, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05717062 (Randomized, Double-Blinded, Placebo-Controlled Study to Evaluate the Safety, Tolerability, and Efficacy of Intravenous Varespladib Followed by Oral Varespladib in Addition to Standard of Care in Subjects Bitten by Venomous Snakes), which is not on this map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Randomized, Double-Blinded, Placebo-Controlled Study to Evaluate the Safety, Tolerability, and Efficacy of Intravenous Varespladib Followed by Oral Varespladib in Addition to Standard of Care in Subjects Bitten by Venomous Snakes
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33 authors.
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Abstract
backgroundSnakebite envenoming causes an estimated 81,000-138,000 deaths and more than 400,000 cases of permanent disability each year, disproportionately affecting low-resource regions. Antivenom is the only approved treatment but requires intravenous administration. We evaluated intravenous followed by oral varespladib as adjunctive therapy to antivenom in hospitalized patients with snakebite envenoming. METHODS AND
findingsIn this multicenter, randomized, double-blind, placebo-controlled phase II trial in India (CTRI/2023/10/058782) and the USA (NCT05717062), patients with snakebite envenoming were randomly assigned (1:1) to receive varespladib or placebo, both in addition to standard of care including antivenom. For elapid envenoming, the primary endpoint was time to recovery of 5-second head-lift. For viper envenoming, the primary endpoint was area under the curve (AUC) from baseline to Day 14 of a 3-item Snakebite Severity Score (SSS). Between June 3rd, 2023, and October 19th, 2024, 140 patients were randomized and 139 were analyzed (73 varespladib; 66 placebo). Study drug was initiated a mean of 7.3 hours after the bite and 3.3 hours after antivenom. Among elapid-bite patients, mean time to head-lift recovery was 27.6 hours with varespladib vs. 36.2 hours with placebo (p = 0.6). Among viper-bite patients, SSS AUC to Day 14 was 660 with varespladib vs. 629 with placebo (p = 0.7). No serious adverse event occurred with varespladib.
conclusionsIn this trial in which varespladib was initiated on average 7 hours after snakebite and several hours after antivenom, late adjunctive varespladib did not meet the primary endpoint. Interpretation of these results is limited by heterogeneity in the snake species responsible for envenoming and the associated differences in venom composition, clinical manifestations, and antivenom treatments.
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