CClinicalTrials.gg
RecruitingNCT04837755CORSAARUpdated May 25, 2025

CORONA in the Saarland

An observational study in Covid19, sponsored by Universität des Saarlandes. Recruiting at 1 site in Germany. Open to participants aged 0 Years to 110 Years. Per ClinicalTrials.gov, last updated 2025-05-25.

Sponsored by Universität des Saarlandes · Observational

From the registry’s dates

  • Primary completion was expected by Dec 2025, 9 months ago, but the record still lists the study as recruiting.
  • Started Mar 2020; still recruiting 6 years 7 months later.
Study type
Observational
Model
Case-only
Time perspective
Prospective
Enrollment
300
Ages
0 Years to 110 Years
Sex
All
01

Study summary

The CORSAAR study is an observational, prospective study to investigate the natural biology of COVID-19

Read the detailed description

Patients with all forms of COVID-19 are included and followed up. Medical history, measurements and biomarkers are registered and collected at baseline, dung hospitalization and after discharge. In addition, patients with LONG-COVID-19 are recruited.

02

Conditions studied

  • Covid19
03

In context

Lead sponsor

Universität des Saarlandes is the lead sponsor of 64 studies on the registry; 16 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
0 Years to 110 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

All COVID-19 patients in the State of Saarland

Inclusion criteria

all form of COVID-19 including long-COVID-19

Exclusion criteria

Exclusion Criteria:

-

05

Study design

Observational model
Case-only
Time perspective
Prospective
Enrollment
300 participants (estimated)
Patient registry
No
Biospecimen retention
Samples with dna

Interventions

  • Diagnostic testCytokine measurements

    The serum concentrations of multiple cytokines are measured.

06

What researchers measure

Primary outcomes

  1. Correlation of biomarkers with mortality and disease subgroups

    Time frame: 2 years after initial disease

07

Study locations

1 of 1 sites recruiting
  • Saarland University
    Homburg, Saarland 66421, Germany
    Recruiting
08

References and documents

Individual participant data

Plan to share: Yes

Supporting information: Study protocol

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 25, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04837755
Lead sponsor
Universität des Saarlandes
Responsible party
Robert Bals (Professor, Universität des Saarlandes) — Principal investigator
First posted
Apr 8, 2021
Start date
Mar 1, 2020
Primary completion
Dec 31, 2025 (estimated)
Completion
Dec 31, 2025 (estimated)
Last update
May 25, 2025

Study contacts

Robert Bals, MD PhD
Contact
robert.bals@uks.eu
+4968411615051

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Interested in this study?

Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.

Contact study team

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion