# Evaluation and Longitudinal Follow-up of Biomarkers Predictive of Severe Forms of COVID-19

> **NCT04648709** · — · TERMINATED · sponsor: **Centre Hospitalier Universitaire de Saint Etienne** · enrollment: 73 (actual)

## Conditions studied

- Covid19

## Interventions

- **DIAGNOSTIC_TEST:** ELISPOT
- **DIAGNOSTIC_TEST:** QUANTIFERON

## Key facts

- **NCT ID:** NCT04648709
- **Lead sponsor:** Centre Hospitalier Universitaire de Saint Etienne
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** TERMINATED
- **Start date:** 2021-03-09
- **Primary completion:** 2022-09-26
- **Final completion:** 2023-12-11
- **Target enrollment:** 73 (ACTUAL)
- **Why stopped:** The development and generalisation of vaccination led to a significant drop in the number of patients meeting the inclusion criteria.
- **Last updated:** 2023-12-20


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04648709

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04648709, "Evaluation and Longitudinal Follow-up of Biomarkers Predictive of Severe Forms of COVID-19". Retrieved via AI Analytics 2026-06-04 from https://api.ai-analytics.org/clinical/NCT04648709. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*