CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 6,789 enrolled
Drug / intervention
Timing of return of resultsother
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/NCT04191824
NCT04191824N/ACompleted

Genetic Testing to Understand and Address Renal Disease Disparities Across the United States

Duke University·interventional·Posted Dec 10, 2019·Updated Mar 25, 2026

In Brief

A clinical study evaluating Timing of return of results for Chronic Kidney Disease and Hypertension. Completed, enrolled 6,789 participants across 14 sites.

Detailed Summary

GUARDD-US is a prospective, multicenter, unblinded, two arm randomized pragmatic clinical trial. Participants will be randomized in a 1:1 ratio to immediate APOL1 gene testing and return of results (ROR) to participant and provider (Intervention arm) versus delayed APOL1 gene testing and ROR to participant and provider (Control arm). The main study will compare outcomes between APOL1 positive participants in the Intervention arm (i.e., early knowledge of APOL1 status) to APOL1 positive participants in the Control arm (i.e., delayed knowledge of APOL1 status). Participants that are APOL1 negative in the Intervention and Control groups will not be included in the main study analyses. GUARDD-US also includes a substudy to determine the effect of knowledge of genetic test results that predict efficacy of various antihypertensive medications on change in SBP from baseline to 3 months in APOL1 negative individuals at participating sites. This substudy is listed separately on clinicaltrials.gov as NCT06748040 and Unique Protocol ID - PRO00102997\_A

Study Details

Timeline

N/ACompletedFinished
2020202120222023202420252026
First PostedDec 10, 2019
Enrollment StartJul 10, 2020
Primary CompletionApr 9, 2024
Study CompletionMay 17, 2024
TodayJul 2, 2026
Enrollment to primary: 3.7 yearsPosted 6.6 years ago

Interventions

Timing of return of resultsother

Participants will be randomized to immediate versus delayed APOL1 return of results