Prospective Study of MAstectomy With Reconstruction Including Robot Endoscopic Surgery

NCT ID: NCT04585074

Last Updated: 2025-05-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Total Enrollment

2000 participants

Study Classification

OBSERVATIONAL

Study Start Date

2020-04-08

Study Completion Date

2030-04-07

Brief Summary

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Robotic mastectomy and immediate reconstruction have been introduced in 2015. However, since robotic mastectomy is the latest surgical technique, there is a lack of studies prospectively comparing conventional mastectomy and immediate reconstruction with robotic mastectomy. For this reason, this study is designed to establish a single institution cohort study that prospectively collects patients undergoing mastectomy and reconstruction. This study was initially designed as a single institution study, however, currently, the study was extended to the multicenter study including 18 institutions over the country. Using the established prospective cohort data, a comparative study of robotic mastectomy with conventional mastectomy and reconstruction, and cost-effectiveness and satisfaction of robotic endoscopic surgery, and cost-effectiveness and satisfaction of reconstructive surgery are to be analyzed.

Detailed Description

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This study is a multi-institution cohort study that prospectively collects patients undergoing mastectomy and reconstruction.

Patients' inclusion criteria is as below; adult women between the ages of 19 and 80, with breast cancer or high risk of breast cancer (patients with a BRCA1/2 mutation, TP53 mutation, PALB2 mutation, etc) scheduled for therapeutic or prophylactic mastectomy, and want immediate reconstruction.

Patients planned for breast-conserving surgery or who do not want immediate reconstruction will be excluded. Patients who planned for surgery on both sides in the different methods (e.g. right for RNSM and left for conventional open NSM) are also excluded. Meanwhile, cases with ipsilateral NSM and contralateral partial mastectomy or excision are included.

The goal number of enrolled patients is 2000.

Collecting data includes patients' clinicopathological factors including height, weight, etc. And also collecting surgical results, oncological results, cost-effectiveness, and satisfactions of patients to secure high-level data.

The satisfaction of patients using the Breast Q survey, basic characteristics like height, weight, etc, and patients' photos will be collected preoperatively.

Also, patients' data will be collected within 6 months after surgery including clinical-pathological factors, surgery results (drainage amount, removal date, complications), postoperative recovery evaluation, complications and adverse reactions, cost, etc.

Between 6 months and 1 year(Patients who have undergone skin sparing mastectomy can do within up to 3 years) after surgery, the results of surgery, recurrence, satisfaction survey, and postoperative photos will be collected.

Every 12 months thereafter, whether adjuvant therapy (chemotherapy, radiation therapy, targeted therapy, endocrine therapy) was implemented, surgical results, and recurrence will be investigated and collected until the end of the study period.

An interim analysis will be done after completing the recruitment of subjects by the 4th year after the start of the study and collecting data. Complete the follow-up observation and data collection of the subjects recruited in the 5-9 years and the final analysis will be conducted.

Categorial variables will be examined by the chi-square test or Fisher's exact test.

Continuous variables will be examined by t-test or ANOVA, and M-W test or K-W test if needed.

Survival analysis will be examined by Kaplan-Meier plot and log-rank test.

Conditions

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Breast Neoplasms Germline BRCA1 Gene Mutation Germline BRCA2 Gene Mutation Benign Breast Disease Germline Mutation Abnormality

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Interventions

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Robotic or endoscopic nipple sparing mastectomy

Cases or Patients who underwent robotic nipple-sparing mastectomy and immediate reconstruction are enrolled in this arm. Robotic nipple-sparing mastectomy should be performed using robotic surgical systems. Robotic surgical systems include da Vinci S,Si, X, Xi, and SP systems. Axillary or lateral incisions are used for this procedure. Immediate reconstruction includes tissue expander insertion, direct-to-implant, latissimus dorsi flap, transverse abdominis rectus muscle flap, or deep inferior epigastric perforators flap. Cases with robotic mastectomy without immediate reconstruction are excluded.

Intervention Type PROCEDURE

Conventional mastectomy (including nipple sparing mastectomy, skin sparing mastectomy)

Cases or Patients who underwent conventional mastectomy and immediate reconstruction are enrolled in this arm. Conventional mastectomy should not be performed using robotic or endoscopic surgical systems. Any incisions can be performed for this procedure. Conventional mastectomy includes also Nipple-sparing mastectomy and Skin sparing mastectomy. Immediate reconstruction includes tissue expander insertion, direct-to-implant, latissimus dorsi flap, transverse abdominis rectus muscle flap, or deep inferior epigastric perforators flap. Cases without immediate reconstruction are excluded.

Intervention Type PROCEDURE

Other Intervention Names

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Robot-assisted nipple sparing mastectomy Robot mastectomy Robotic mastectomy Hybrid robotic nipple sparing mastectomy Robot-assisted nipple areolar complex and skin sparing mastectomy Endoscopic nipple sparing mastectomy Total mastectomy Mastectomy Nipple-sparing mastectomy Skin sparing mastectomy

Eligibility Criteria

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Inclusion Criteria

* Female patient between the ages of 19 and 80
* Patients with breast cancer or high risk of breast cancer ( BRCA1/2 mutation, TP53 mutation, PALB2, etc.)
* Patients scheduled for therapeutic or prophylactic mastectomy (including conventional mastectomy, skin sparing mastectomy, areolar conserving mastectomy)
* Patients who want immediate reconstruction during mastectomy
* Those agreed in writing consent to participate study

Exclusion Criteria

* Patients scheduled for breast conserving mastectomy
* Patients who do not want immediate reconstruction during mastectomy
* Patients who planned for surgery on both sides in the different methods
Minimum Eligible Age

19 Years

Maximum Eligible Age

80 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Severance Hospital

OTHER

Sponsor Role lead

Responsible Party

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Hyung Seok Park, MD, PhD

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Hyung Seok Park, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Severance Hospital

Locations

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Kosin University Gospel Hospital

Busan, Busan, South Korea

Site Status

Chungnam National University Sejong Hospital

Sejong, Chungcheongnam-do, South Korea

Site Status

Kyungpook National University Chilgok Hospital

Daegu, Daegu, South Korea

Site Status

Wonju Severance Christian hospital

Wŏnju, Gangwon-do, South Korea

Site Status

Korea University Ansan Hospital

Ansan, Gyeonggi-do, South Korea

Site Status

Myongji Hospital

Goyang-si, Gyeonggi-do, South Korea

Site Status

Yongin Severance Hospital

Yongin-si, Gyeonggi-do, South Korea

Site Status

Samsung Changwon Medical Center

Changwon, Gyeongsangnam-do, South Korea

Site Status

The Catholic University of Korea, Incheon ST. Mary's Hospital

Incheon, Incheon, South Korea

Site Status

Korea University Anam Hospital

Seoul, Seoul, South Korea

Site Status

Seoul National University Hospital

Seoul, Seoul, South Korea

Site Status

Soonchunhyang University Hospital

Seoul, Seoul, South Korea

Site Status

Gangnam Severance Hospital

Seoul, Seoul, South Korea

Site Status

Seoul Metropolitan Government Seoul National University Boramae Medical Center

Seoul, Seoul, South Korea

Site Status

Korea University Guro Hospital

Seoul, Seoul, South Korea

Site Status

Yonsei University College of Medicine

Seoul, Seoul, South Korea

Site Status

Samsung Medical Center

Seoul, Seoul, South Korea

Site Status

Asan Medical Center

Seoul, Seoul, South Korea

Site Status

Countries

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South Korea

References

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Banfield S. A management systems analysis. Caring. 1987 Jul;6(7):45-50. No abstract available.

Reference Type BACKGROUND
PMID: 10283322 (View on PubMed)

Ryu JM, Lee J, Lee J, Ko B, Kim JH, Shin H, Park HS; Korea Robot-endoscopy Minimal Access Breast Surgery Study Group (KoREa-BSG). Mastectomy with Reconstruction Including Robotic Endoscopic Surgery (MARRES): a prospective cohort study of the Korea Robot-Endoscopy Minimal Access Breast Surgery Study Group (KoREa-BSG) and Korean Breast Cancer Study Group (KBCSG). BMC Cancer. 2023 Jun 21;23(1):571. doi: 10.1186/s12885-023-10978-0.

Reference Type DERIVED
PMID: 37344780 (View on PubMed)

Other Identifiers

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4-2020-0165

Identifier Type: -

Identifier Source: org_study_id

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