Clinical trial Recruiting at 11 sites Interventional Ages 19 to 70 Women only

Comparing robot-assisted and open nipple-sparing mastectomy with immediate breast reconstruction

Official title: A Prospective Multicenter Randomized Clinical Trial: Robot-assisted vs. Open Nipple-sparing Mastectomy With Immediate Breast Reconstruction (ROM) Trial

Run by Yonsei University · NCT05490433 · Data updated 2026-11-12

This study is testing if a robot-assisted surgery for breast cancer can be as safe and effective as traditional surgery for women needing nipple-sparing mastectomy and immediate breast reconstruction.

Quick facts

Study typeInterventional
Ages19 Years to 70 Years
SexWomen only
Enrollment790 (estimated)
SponsorYonsei University
Academic / other
Locations17 sites (Changwon and 16 other locations)
StatusRecruiting
StartedOctober 26, 2022
Main results expectedJune 2032
Study endsJune 2032
Registry record updatedNovember 17, 2025
Trial IDNCT05490433 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adult women over 19 years old with breast cancer stages 0-3A who desire immediate breast reconstruction.

Probably not a fit

Patients who are not candidates for immediate breast reconstruction or have advanced breast cancer (stage IIIB-IV) will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial evaluates the oncological outcomes of robot-assisted nipple-sparing mastectomy (RNSM) compared to conventional nipple-sparing mastectomy (CNSM) in women with breast cancer. It aims to provide high-level evidence regarding the effectiveness and safety of RNSM, particularly in the context of immediate breast reconstruction. The study involves a multicenter randomized design, focusing on patients with breast cancer stages 0 to 3A who are scheduled for therapeutic mastectomy. The trial is conducted by the Korea Robot-Endoscopy Minimal Access Breast Surgery Study Group to standardize and teach this advanced surgical technique.

Why it matters

Potential benefit: If successful, this study could lead to improved surgical outcomes and recovery for breast cancer patients undergoing mastectomy and reconstruction.

How similar studies have gone: Previous studies have shown that robot-assisted surgical techniques can be feasible, but this specific comparison of RNSM and CNSM is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adult women (≥19 years) scheduled to undergo therapeutic mastectomy for breast cancer who desire immediate breast reconstruction (IBR).
* Breast cancer classified as clinical TNM stage 0 to IIIA, based on preoperative evaluation according to the 8th edition of the AJCC anatomic staging system.
* Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.

Exclusion Criteria:

* Patients scheduled for breast-conserving surgery or deemed ineligible for immediate breast reconstruction (IBR).
* Clinical evidence of nipple or skin involvement on preoperative evaluation.

  * Pregnant or breastfeeding women.
  * Tumors consisting exclusively of lobular carcinoma in situ (LCIS).
  * Paget's disease of the breast.
  * Inflammatory breast cancer.
  * Male breast cancer.
  * Clinical stage IIIB-IV disease on preoperative evaluation.
  * breast size equal to or larger than cup E
  * History of breast cancer or bilateral breast cancer (including metachronous or synchronous disease).
  * History of non-breast malignancy, with the exception of non-melanoma skin cancer or papillary/follicular thyroid carcinoma.
  * Special histologic subtypes of breast tumors (e.g., phyllodes tumor, sarcoma, lymphoma).
  * Age \>70 years.
  * American Society of Anesthesiologists (ASA) physical status classification grade ≥4.
  * Inability to provide informed consent.
  * History of prior chest radiotherapy.
  * Patients who have not undergone preoperative testing for hepatitis B virus (HBV), hepatitis C virus (HCV), and human immunodeficiency virus (HIV), which is required for liability insurance coverage.

Where it's running

  • Samsung Changwon Medical Center
    Changwon, South Korea
    Recruiting
  • Keimyung University Dongsan Hospital
    Daegu, South Korea
    Recruiting
  • Kyungpook National University Chilgok Hospital
    Daegu, South Korea
    Recruiting
  • Myongji Hospital
    Goyang-si, South Korea
    Recruiting
  • The Catholic University of Korea, Incheon ST. Mary's Hospital
    Incheon, South Korea
    Recruiting
  • Kosin University Gospel Hospital
    Pusan, South Korea
    Recruiting
Show 11 more locations
  • Korea University Anam Hospital
    Seoul, South Korea
    Recruiting
  • Samsung Medical Center
    Seoul, South Korea
    Recruiting
  • Seoul National University Hospital
    Seoul, South Korea
    Recruiting
  • Yonsei University Health System, Severance Hospital
    Seoul, South Korea
    Recruiting
  • Yongin Severance Hospital
    Yongin-si, South Korea
    Recruiting
  • Yeungnam University Medical Center
    Daegu, South Korea
    Not yet recruiting
  • Chungnam National University Sejong Hospital
    Sejong, South Korea
    Not yet recruiting
  • Asan Medical Center
    Seoul, South Korea
    Not yet recruiting
  • Gangnam Severance Hospital
    Seoul, South Korea
    Not yet recruiting
  • Korea University Ansan Hospital
    Seoul, South Korea
    Not yet recruiting
  • Soonchunhyang University Hospital Seoul
    Seoul, South Korea
    Not yet recruiting

Study contacts

  • Principal investigator: Hyung Seok Park, MD, PhD — Yonsei University
  • Study coordinator: Hyung Seok Park, MD, PhD
  • Email: imgenius@yuhs.ac
  • Phone: 82-10-6760-2974

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
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Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.