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

2019-10-10 09:39:39 | BioPortfolio


The OBSERB study is a multi-center, non-blinded, pragmatic, parallel, randomized controlled trial in which patients with cT1-3N1 and ycN0 breast cancer.


The OBSERB study aims to compare the oncologic outcomes of radiotherapy without sentinel lymph node biopsy versus sentinel lymph node biopsy for the management of breast cancer which showed the cN1 was conversed as ycN0 after neoadjuvant chemotherapy.

To verify whether, the radiotherapy without SLN can be applied, when the cN1 was conversed as ycN0 after neoadjuvant chemotherapy.

To verify whether, the additional treatment decision can be established based on only the biology of primary tumor without the pathologic information of axillary lymph nodes To verify whether, the patients' quality of life can be improved by a less invasive surgical procedure, when the cN1 was conversed as ycN0 after neoadjuvant chemotherapy.

Study Design


Breast Neoplasm Female




Not yet recruiting


Kyungpook National University Chilgok Hospital

Results (where available)

View Results


Published on BioPortfolio: 2019-10-10T09:39:39-0400

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Medical and Biotech [MESH] Definitions

Use of ultrasound for imaging the breast. The most frequent application is the diagnosis of neoplasms of the female breast.

Implants used to reconstruct and/or cosmetically enhance the female breast. They have an outer shell or envelope of silicone elastomer and are filled with either saline or silicone gel. The outer shell may be either smooth or textured.

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