# Single vs Multi-fraction SRS Patients on Immunotherapy

> **NCT04427228** · PHASE2 · WITHDRAWN · sponsor: **University of Chicago**

## Conditions studied

- Brain Cancer
- Brain Metastases

## Interventions

- **RADIATION:** Radiosurgery Single Treatment
- **RADIATION:** Radiosurgery Three Treatments

## Key facts

- **NCT ID:** NCT04427228
- **Lead sponsor:** University of Chicago
- **Sponsor class:** OTHER
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** WITHDRAWN
- **Start date:** 2020-06-29
- **Primary completion:** 2022-12-12
- **Final completion:** 2022-12-12
- **Target enrollment:** 0 (ACTUAL)
- **Why stopped:** unable to enroll
- **Last updated:** 2023-08-28


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04427228

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04427228, "Single vs Multi-fraction SRS Patients on Immunotherapy". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT04427228. Licensed CC0.

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