# Frequency of SPAD in Adult Patients

> **NCT05664035** · — · RECRUITING · sponsor: **University Hospital, Lille** · enrollment: 99 (estimated)

## Conditions studied

- Specific Antibody Deficiency
- Predominantly Antibody Deficiencies

## Interventions

- **BIOLOGICAL:** Diagnosis of SPAD using immunization with PPV23

## Key facts

- **NCT ID:** NCT05664035
- **Lead sponsor:** University Hospital, Lille
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2023-03-01
- **Primary completion:** 2026-06
- **Final completion:** 2026-06
- **Target enrollment:** 99 (ESTIMATED)
- **Last updated:** 2026-05-18

## Collaborators

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## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05664035

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05664035, "Frequency of SPAD in Adult Patients". Retrieved via AI Analytics 2026-06-08 from https://api.ai-analytics.org/clinical/NCT05664035. Licensed CC0.

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