CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 189 enrolled
Drug / intervention
Thymalfasindrug
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04428008
NCT04428008Phase 2Completed

A Pilot Trial of Thymalfasin (Ta1) to Prevent COVID-19 Infection in Renal Dialysis Patients

William B. Ershler, MD·interventional·Posted Jun 11, 2020·Updated Apr 21, 2026

In Brief

A Phase 2 clinical trial evaluating Thymalfasin for COVID-19. Completed, enrolled 189 participants across 1 site.

Detailed Summary

Thymalfasin (thymosin alpha 1 or Ta1), the active pharmaceutical ingredient in ZADAXIN® injection, is a 28-amino acid synthetic peptide, identical to natural Ta1 produced by the thymus gland. Ta1 is a biological response modifier which activates various cells of the immune system, and is therefore expected to have clinical benefits in disorders where immune responses are impaired or ineffective, including acute and chronic viral and bacterial infections, cancers, and vaccine non-responsiveness. Patients with end-stage renal disease (ESRD) on hemodialysis, in addition to their intrinsic kidney disease and frequent burden of comorbidities, also have increased risk of exposure to communicable diseases as they are treated several times each week at hemodialysis centers with several other patients and clinic staff in attendance. The majority of patients are over 60 years of age and many are receiving immunosuppressive medications. Accordingly, ESRD patients are particularly susceptible to COVID-19 infection. Ta1 has been shown to be safely administered to hemodialysis patients. It is our hypothesis that a course of Ta1 administered to individuals with ESRD will reduce the rate and severity of infection with COVID-19.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsCOVID-19
CountriesUnited States

Timeline

Phase 2CompletedFinished
202120222023202420252026
First PostedJun 11, 2020
Enrollment StartJan 12, 2021
Primary CompletionJan 19, 2023
TodayJul 2, 2026
Enrollment to primary: 2.0 yearsPosted 6.1 years ago

Interventions

Thymalfasindrug

Synthetic 28 amino acid peptide