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Immunology research

TESTS: a larger thymosin alpha 1 trial with a neutral primary result

The phase 3 sepsis trial found no clear evidence of lower 28-day mortality.

Clinical trialPaper year: 2025Thymosin alpha 1

01 / DESIGN

What was studied?

This double-blind, placebo-controlled trial randomized 1,106 adults with sepsis across 22 centers in China. The primary analysis included participants who received study treatment and assessed all-cause mortality at 28 days.

02 / FINDINGS

What did the researchers report?

Mortality was similar between groups: 23.4% with thymosin alpha 1 and 24.1% with placebo in the reported analysis. Secondary and safety outcomes did not differ significantly. The overall result did not support a clear mortality benefit.

03 / LIMITS

How should it be interpreted?

Subgroup signals should not replace the neutral overall outcome. This trial involved critically ill patients receiving standard medical care and a defined study product. It does not validate generalized immune-enhancement claims or research-supply materials.

Voltera Peptide editorial reading note. Based on the linked source record. Methods and corrections.

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