# Sample Collection for Systems Evaluation of Patients With Unknown or Incompletely Characterized Immune Defects

> **NCT04408950** · — · COMPLETED · sponsor: **National Institute of Allergy and Infectious Diseases (NIAID)** · enrollment: 19 (actual)

## Conditions studied

- Immunodeficiency

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT04408950
- **Lead sponsor:** National Institute of Allergy and Infectious Diseases (NIAID)
- **Sponsor class:** NIH
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2020-11-12
- **Primary completion:** 2025-01-27
- **Final completion:** 2025-01-27
- **Target enrollment:** 19 (ACTUAL)
- **Last updated:** 2025-11-19


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04408950

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04408950, "Sample Collection for Systems Evaluation of Patients With Unknown or Incompletely Characterized Immune Defects". Retrieved via AI Analytics 2026-06-03 from https://api.ai-analytics.org/clinical/NCT04408950. Licensed CC0.

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