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 type | Interventional |
|---|---|
| Ages | 19 Years to 70 Years |
| Sex | Women only |
| Enrollment | 790 (estimated) |
| Sponsor | Yonsei University Academic / other |
| Locations | 17 sites (Changwon and 16 other locations) |
| Status | Recruiting |
| Started | October 26, 2022 |
| Main results expected | June 2032 |
| Study ends | June 2032 |
| Registry record updated | November 17, 2025 |
| Trial ID | NCT05490433 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
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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
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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
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.