Are hidden immune defects causing your recurring infections? new study investigates.

NCT ID NCT02972281

Completed Knowledge-focused Sponsor: University Hospital, Lille Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked for hidden immune system problems in adults who get frequent or severe bacterial infections, like pneumonia or meningitis. Researchers screened 120 adults aged 18-65 to see how many had an undiagnosed primary immunodeficiency. The goal was to find out if these conditions are being missed in adults with no other known cause for their infections.

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Conditions

The condition(s) this trial relates to.

agammaglobulinemia bacterial meningitis bacterial pneumonia chronic rhinosinusitis complement deficiency haemophilus infectious disease Hereditary Complement Deficiency Diseases inborn error of immunity otitis media pneumococcal infection streptococcal infection

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ANTIBODY DEFICIENCY CHRONIC SINUS INFECTION COMPLEMENT DEFICIENCY HAEMOPHILUS INFLUENZA MENINGITIS, BACTERIAL NEISSERIA INFECTIONS OTITIS MEDIA PNEUMOCOCCAL INFECTIONS PNEUMONIA, BACTERIAL STREPTOCOCCAL INFECTION

Contacts and locations

Locations

C.H de Roubaix

Roubaix, France
CH ARRAS

Arras, France
CH DOUAI

Douai, France
CH LENS

Lens, France
CHRU,

Lille, France
Ch Armentieres

Armentières, France
Ch Arrondissement de Montreuil

Rang-du-Fliers, France
Ch Bethune

Béthune, France
Ch Boulogne-Sur-Mer

Boulogne-sur-Mer, 62321, France
Ch Cambrai

Cambrai, France
Ch Denain

Denain, France
Ch Dunkerque

Dunkirk, France
Ch Region de St-Omer

Saint-Omer, France
Ch Tourcoing

Tourcoing, France
Ch de Valenciennes

Valenciennes, France
Clinique Teissier

Valenciennes, France
Groupe Hospitalier Seclin Carvin

Seclin, France
Hopital Prive La Louviere

Lille, 59000, France
Hopital Saint Vincent - Saint Antoine

Lille, France

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