Investigating respiratory microbiota and immune response in patients with CVID

Alteration of Respiratory Microbiota and Local Immune Response in Common Variable Immunodeficiency

Observational Boston University · NCT06173128

This study looks at how the immune system and germs in the lungs interact in people with common variable immunodeficiency (CVID) to better understand their respiratory problems.

Quick facts

Study typeObservational
Enrollment80 (estimated)
Ages18 Years to 80 Years
SexAll
SponsorBoston University Academic / other
Locations1 site (Boston, Massachusetts)
Trial IDNCT06173128 on ClinicalTrials.gov

What this trial studies

This observational study focuses on common variable immunodeficiency (CVID), a primary immunodeficiency that often leads to respiratory complications. The research aims to explore how antibody deficiencies in CVID affect the respiratory microbiota and the interactions between microbes and host cells. By directly sampling the respiratory tract, the study will utilize advanced bioinformatics to analyze these complex interactions. The goal is to better understand the pulmonary biology in CVID patients and the underlying mechanisms driving respiratory diseases.

Who should consider this trial

Good fit: Ideal candidates include patients diagnosed with primary antibody deficiency, specifically CVID.

Not a fit: Patients who are pregnant or have uncontrolled asthma or COPD may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved understanding and management of respiratory complications in CVID patients.

How similar studies have performed: While the specific approach of this study may be novel, similar studies investigating microbiota interactions in other immunodeficiencies have shown promising results.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with primary antibody deficiency diagnosed by their treating physician
* Controls will not have a diagnosis of immunodeficiency of any sort
* Male and female patients will be enrolled evenly

Exclusion Criteria:

* Patients who self identify as pregnant
* Patients with asthma or chronic obstructive pulmonary disease (COPD) that are not well controlled clinically

Where this trial is running

Boston, Massachusetts

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 CVIDImpaired antibody responsePattern recognition receptorImmunoglobulinsRespiratory microbiotaNuclear Factor Kappa B-driven cytokinesComplex microbial-host cell interactionsPulmonary biology
Last reviewed 2026-06-13 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.