# Characterizing Matrix Metalloproteinase-12 (MMP12) in Sputum

> **NCT04761393** · — · RECRUITING · sponsor: **McMaster University** · enrollment: 45 (estimated)

## Conditions studied

- Emphysema

## Interventions

- **PROCEDURE:** Hyperpolarized 129Xe (Xenon) diffusion-weighted MRI

## Key facts

- **NCT ID:** NCT04761393
- **Lead sponsor:** McMaster University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2022-11-29
- **Primary completion:** 2025-01
- **Final completion:** 2025-01
- **Target enrollment:** 45 (ESTIMATED)
- **Last updated:** 2024-11-20

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04761393

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04761393, "Characterizing Matrix Metalloproteinase-12 (MMP12) in Sputum". Retrieved via AI Analytics 2026-06-24 from https://api.ai-analytics.org/clinical/NCT04761393. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*