Prepectoral and Subpectoral Implant-based Breast Reconstruction

March 28, 2025 updated by: Jiong Wu, Fudan University

A Multicentric, Open-labeled, Prospective, Randomized Controlled Study to Compare the Satisfaction and Safety of the Prepectoral and Subpectoral Implant-based Breast Reconstruction in Patients Receiving Immediate Breast Reconstruction Using Implant Combined With TiLoop® Bra After Skin Sparing or Nipple-areola Sparing Mastectomy

Breast cancer is one of the main malignant tumors threatening women's lives. In recent years, the increasing demand for reconstruction of breast cancer patients in China has made the proportion of breast reconstruction increase year by year, while implant reconstruction has become the most important way of breast reconstruction due to its less injury, shorter time of operation and relatively simple surgical technique. In the long-term clinical practice, due to the lack of safe and effective alternative methods, the reconstruction method with prosthesis placed to posterior pectoralis major has been accepted by surgeons and patients, and has become the most commonly used method of prosthesis construction. However, the development of biomaterials provides new ideas for breast reconstruction. At present, more and more doctors in clinical practice discontinue the use of serratus anterior, but use the synthetic mesh (mostly titanium mesh TiLoop® Bra) or allogeneic acellular dermal matrix mesh to cover part of the dilator or prosthesis so as to shorten the entire operation cycle and make the appearance of the reconstructed breast more natural and aesthetic. In particular, it can improve the contour of the folds under the breast and shape the breasts with a certain degree of sagging.

This study takes the patients receiving immediate reconstruction with an implant combined with TiLoop® Bra after total mastectomy as the subjects, aiming to compare the aesthetics and safety of the placement of implant to anterior and posterior pectoralis major through a prospective and randomized study. The primary objective of the study is to analyze the aesthetics of breast appearance, patient satisfaction and postoperative quality of life (QOL) of the placement of implant to anterior and posterior pectoralis major. The secondary objective of the study is to analyze the incidence of complications and type of reoperation in both groups.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
300

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • China
      • Shanghai, China
        • Fudan University Shanghai Cancer Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. More than 18 years old
  2. Female
  3. Preoperative pathology confirming invasive breast carcinoma or ductal carcinoma in situ
  4. Clinical T1 and T2 (Maximum tumor diameter ≤5 cm)
  5. Clinical ALN negative (Clinical physical examination and ultrasound indicate axillary lymph node negative; Suspected abnormality of axillary lymph node, and fine needle aspiration negative)
  6. No clinical or imaging evidence of distant metastasis
  7. Patients to receive skin sparing mastectomy or nipple sparing mastectomy
  8. BMI < 35
  9. Patients with no or mild mastoptosis
  10. Prosthesis to be implanted <500 ml
  11. Be able and willing to sign the Informed Consent Form (ICF)

Exclusion Criteria:

  1. Patients with the breast of moderate-severe mastoptosis, or requiring the use of Wise-pattern or other breast lift methods for subcutaneous mammary gland resection
  2. BMI>=35
  3. Patients who have received symmetrical breast surgery on the unaffected side immediately or later
  4. Patients with locally advanced breast cancer to receive neoadjuvant therapy
  5. Patients currently participating in other clinical trials, which may have impact on the participation in this trial
  6. Neoadjuvant therapy has been completed, and there is clear indication of adjuvant radiotherapy after the operation
  7. Previous history of breast cancer (patients with ipsilateral recurrence after breast sparing surgery)
  8. Pregnancy breast-feeding women
  9. History of smoking
  10. Previous history of diabetes

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Prepectoral Group
Prepectoral implant-based reconstruction applied for patients in this group
Procedure: prepectoral implant-based reconstruction
In this group, patients receive breast reconstruction with prosthesis placed to anterior pectoralis major, synthetic mesh is used to enclose the prosthesis and place it to anterior pectoralis major.
Active Comparator: Subpectoral Group
Subpectoral implant-based reconstruction applied for patients in this group
Procedure: subpectoral implant-based reconstruction
In this group, patients receive breast reconstruction with placed to posterior pectoralis major, part of the mesh is placed under the pectoralis major during the operation, and the mesh is used to cover the suture of the prosthesis on the inferior plica, or to directly enclose the lower part of the implant.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Patients' satisfaction
Time Frame: 18 months after the operation
Patients' satisfaction evaluated based on Breast-Q scale
18 months after the operation

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Incidences of complications and serious complications
Time Frame: During 18 months after the operation
Incidences of complications and serious complications
During 18 months after the operation

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Fudan University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
May 12, 2021

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 27, 2024

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
December 25, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 25, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 30, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 2, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 28, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • PSIBBR

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

IPD Plan Description

Undecided

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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