# A Non-Interventional Study in Participants With Indolent Systemic Mastocytosis (ISM) in Germany

> **NCT07255638** · — · RECRUITING · sponsor: **Blueprint Medicines Corporation** · enrollment: 80 (estimated)

## Conditions studied

- Indolent Systemic Mastocytosis

## Interventions

- **DRUG:** Avapritinib

## Key facts

- **NCT ID:** NCT07255638
- **Lead sponsor:** Blueprint Medicines Corporation
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2025-12-09
- **Primary completion:** 2028-12-01
- **Final completion:** 2028-12-01
- **Target enrollment:** 80 (ESTIMATED)
- **Last updated:** 2026-04-20


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT07255638

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT07255638, "A Non-Interventional Study in Participants With Indolent Systemic Mastocytosis (ISM) in Germany". Retrieved via AI Analytics 2026-06-24 from https://api.ai-analytics.org/clinical/NCT07255638. Licensed CC0.

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