Observational study on post-COVID-19 complications

IRCM Post-COVID-19 (IPCO) Research Clinic: a Multidisciplinary Approach to Evaluate Short and Long-term Complications of COVID-19

Observational Institut de Recherches Cliniques de Montreal · NCT04736732

This study is trying to see what long-term health problems people might have after recovering from COVID-19, focusing on adults aged 18 to 100.

Quick facts

Study typeObservational
Enrollment650 (estimated)
Ages18 Years to 100 Years
SexAll
SponsorInstitut de Recherches Cliniques de Montreal Academic / other
Locations1 site (Montreal, Quebec)
Trial IDNCT04736732 on ClinicalTrials.gov

What this trial studies

This observational cohort study aims to evaluate the short- and long-term end-organ complications associated with COVID-19 in individuals aged 18 to 100 years. It will recruit up to 627 participants, including those with asymptomatic, mild, moderate, or severe COVID-19 infections, and will follow them for 24 months after symptom onset or diagnosis. The study will also establish a biobank for future research and develop predictive models for end-organ complications. Primary endpoints include the development of any end-organ complications plausibly related to COVID-19.

Who should consider this trial

Good fit: Ideal candidates include individuals aged 18 and older who have had a confirmed or suspected COVID-19 infection within the last 24 months.

Not a fit: Patients who have never tested positive for COVID-19 and do not have any related symptoms may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance understanding of post-COVID-19 complications and improve patient management strategies.

How similar studies have performed: Other studies have shown success in identifying long-term complications of COVID-19, making this approach both relevant and necessary.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Any gender, ≥ 18 years old
* Current resident of Quebec
* Speaks English or French
* Have a personal email (to which to send reminders and questionnaire by email )

AND

1 of the following criteria:

• Individuals with at least one COVID-19 positive PCR test, serology or antibody/antigen test in the last 60 months at day of recruitment. In the absence of a positive COVID-19 test, individuals with symptoms consistent with COVID-19 while living with a person who had a confirmed positive PCR, serology or antibody/antigen COVID-19 test in the last 60 months at day of recruitment (epidemiologic link).

OR

• Individuals who tested negative for COVID-19 while living with a household member who tested positive for COVID-19 or had a close contact with the viral infection in the context of their work, and never had any COVID-19 related symptoms (presumed COVID negative control group).

OR

• Individuals who don't have any COVID-19 related symptoms actually, have never had tested positive, and have had at least one negative PCR, serology or antibody/antigen COVID-19 test (presumed COVID negative control group).

OR

• Individuals with an undiagnosed viral infection in the last 60 months at day of recruitment and have persistent symptoms (or not) after the participant has recovered from a viral infection.

Exclusion Criteria:

* Any participant not deemed appropriate for enrollment according to the PI
* Known pregnancy (female will not be automatically screened for pregnancy upon enrollment unless there is a possibility that they might be pregnant)

Where this trial is running

Montreal, Quebec

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Covid19Long COVIDPost-COVID-19 syndromeCOVID-19-related long-term complicationsCOVID-19 long haulersPost-COVID-19 conditionPost-acute sequelae of COVID-19
Last reviewed 2026-06-09 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.