# Omitting Biopsy of SEntinel Lymph Node With Radiation After Neoadjuvant Chemotherapy in Breast Cancer (OBSERB) Trial

> **NCT04116125** · NA · UNKNOWN · sponsor: **Kyungpook National University Chilgok Hospital** · enrollment: 1380 (estimated)

## Conditions studied

- Breast Neoplasm Female
- Lymphatic Metastasis

## Interventions

- **PROCEDURE:** Radiotherapy

## Key facts

- **NCT ID:** NCT04116125
- **Lead sponsor:** Kyungpook National University Chilgok Hospital
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2020-07-01
- **Primary completion:** 2023-06-30
- **Final completion:** 2025-06-30
- **Target enrollment:** 1380 (ESTIMATED)
- **Last updated:** 2019-10-04

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04116125

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04116125, "Omitting Biopsy of SEntinel Lymph Node With Radiation After Neoadjuvant Chemotherapy in Breast Cancer (OBSERB) Trial". Retrieved via AI Analytics 2026-06-09 from https://api.ai-analytics.org/clinical/NCT04116125. Licensed CC0.

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