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Thymic Function in Patients With COVID-19 (COVITHYM)

C

CMC Ambroise Paré

Status

Completed

Conditions

Covid19

Treatments

Genetic: Single-Nucleotide Polymorphisms (SNP) within the TCRA/D region
Diagnostic Test: CT Scan
Biological: Bronchial fibroscopy
Biological: Blood sample

Study type

Observational

Funder types

Other

Identifiers

NCT04716907
2020/06

Details and patient eligibility

About

The main clinical manifestation associated with SARS-CoV-2 infection is an influenza-like illness that follows the infection of the respiratory tract. In a few percent of infected people, inflammation of the lungs leads to severe pneumonia that requires hospitalization, in intensive care units for the more severe cases. Despite intensive care, a fatal outcome occurs in 6% and 12% of women and men over 80 years of age hospitalized for severe COVID, respectively.

Factors associated with a higher risk of death in patients with SARS-CoV-2 include age and low circulating lymphocyte counts. Significant lymphopenia is indeed frequently observed in patients with severe COVID-19 and both phenotypic and functional changes in antiviral T cells have been correlated with the severity of COVID-19.

The thymus, the organ that produces T lymphocytes, undergoes progressive physiological involution with age. However, in the elderly, rare cases of thymic hyperplasia are reported in autoimmune diseases or cancers, or are observed in response to deep lymphopenia, whether or not associated with sepsis.

This cohort of patients treated for a SARS-CoV-2 infection could allow to better understand the role of the thymus in this pathology.

Enrollment

85 patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Cases :

  • Patients with confirmed COVID-19 infection
  • Hospitalized for COVID-19 infection
  • Having signed a written informed consent form
  • Affiliation to the social security system

Controls :

  • Non-COVID-19 patients
  • Hospitalized for other reasons
  • Age and sex-matched controls
  • Having signed a written informed consent form,
  • Affiliation to the social security system

Exclusion criteria

  • Autoimmune disease
  • HIV, Hepatitis B or Hepatitis C
  • Pregnant or breastfeeding women
  • A mental or linguistic inability to understand the study
  • Patient under protection of the adults (guardianship, curators or safeguard of justice)

Trial design

85 participants in 2 patient groups

Case : COVID-19 positive patients
Description:
patients hospitalized for COVID-19 infection
Treatment:
Biological: Blood sample
Genetic: Single-Nucleotide Polymorphisms (SNP) within the TCRA/D region
Diagnostic Test: CT Scan
Biological: Bronchial fibroscopy
Control : COVID-19 negative patients
Description:
patients hospitalized for other reasons
Treatment:
Biological: Blood sample
Diagnostic Test: CT Scan

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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