# The PRECISION Trial (Profiling Early Breast Cancer for Radiotherapy Omission): A Phase II Study of Breast-Conserving Surgery Without Adjuvant Radiotherapy for Favorable-Risk Breast Cancer

> **NCT02653755** · PHASE2 · ACTIVE_NOT_RECRUITING · sponsor: **Dana-Farber Cancer Institute** · enrollment: 671 (actual)

## Conditions studied

- Breast Cancer Radiation

## Interventions

- **DEVICE:** Prosigna

## Key facts

- **NCT ID:** NCT02653755
- **Lead sponsor:** Dana-Farber Cancer Institute
- **Sponsor class:** OTHER
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2016-05
- **Primary completion:** 2026-05
- **Final completion:** 2026-05
- **Target enrollment:** 671 (ACTUAL)
- **Last updated:** 2026-01-13

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT02653755

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT02653755, "The PRECISION Trial (Profiling Early Breast Cancer for Radiotherapy Omission): A Phase II Study of Breast-Conserving Surgery Without Adjuvant Radiotherapy for Favorable-Risk Breast Cancer". Retrieved via AI Analytics 2026-07-19 from https://api.ai-analytics.org/clinical/NCT02653755. Licensed CC0.

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