# A Prospective, Single-centre, Observational Cohort Study on the Efficacy and Safety of Bacterial Lysate (OM-85) in Combination With Antihistamines for the Treatment of Chronic Spontaneous Urticaria (CSU)

> **NCT07557888** · — · NOT_YET_RECRUITING · sponsor: **The Fourth Affiliated Hospital of Zhejiang University School of Medicine** · enrollment: 132 (estimated)

## Conditions studied

- Chronic Spontaneous Urticaria (CSU)

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT07557888
- **Lead sponsor:** The Fourth Affiliated Hospital of Zhejiang University School of Medicine
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** NOT_YET_RECRUITING
- **Start date:** 2026-05-01
- **Primary completion:** 2027-03-01
- **Final completion:** 2027-06-01
- **Target enrollment:** 132 (ESTIMATED)
- **Last updated:** 2026-05-07


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT07557888

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT07557888, "A Prospective, Single-centre, Observational Cohort Study on the Efficacy and Safety of Bacterial Lysate (OM-85) in Combination With Antihistamines for the Treatment of Chronic Spontaneous Urticaria (CSU)". Retrieved via AI Analytics 2026-07-19 from https://api.ai-analytics.org/clinical/NCT07557888. Licensed CC0.

---

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