A Study of SHR-A1811 as Neoadjuvant Treatment for Patients With HR-Positive, Low HER2 Expression Breast Cancer

October 31, 2024 updated by: Zhenzhen Liu, Henan Cancer Hospital

Phase II Study of SHR-A1811 as Neoadjuvant Treatment for Patients With HR-Positive, Low HER2 Expression Breast Cancer

HR-positive breast cancers accounts for about 50% to 60% of all breast cancer patients. Neoadjuvant Chemotherapy is the core treatment mode for this type of breast cancer, and endocrine therapy can be used in some low-risk patients. However, the pathological complete response (pCR) rate obtained is low. HER2 is an important prognostic indicator and therapeutic target for breast cancer. Nearly 60% of HR-positive breast cancers have low expression of HER2, and antibody-drug conjugates (ADC) targeting HER2 may achieve better efficacy in this subtype.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
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.

Detailed Description

This prospective, single-arm study is being conducted to evaluate the efficacy and safety of SHR-A1811 for early-stage or locally advanced breast cancer patients with HR-Positive, Low HER2 Expression. Subjects will receive the neoadjuvant therapy of SHR-A1811 for eight cycles, and then undergo surgery within 4 weeks after neoadjuvant therapy. The follow-up visit will last for at least 5 years.

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.
66

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.
  • Phase 2

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 Contact Backup

Study Locations

  • China
    • Henan
      • Zhengzhou, Henan, China, 450008

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

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Patients aged 18 to 70 years old (inclusive);
  2. Treatment-naive patients with clinically confirmed T2-T3, any nodal status and M0;
  3. HR-positive, HER2 low expression, the expression of Ki-67 exceed 14% invasive breast cancer confirmed by histology or cytology;
  4. ECOG performance status of 0-1;
  5. Normal organ and bone marrow function;
  6. Patients of childbearing age must consent to use highly effective contraception for 7 months from the start of study screening until the last study medication and agree not to breastfeeding;
  7. Patients voluntarily joined the study and signed informed consent;

Exclusion Criteria:

  1. Patients have evidence of metastatic breast cancer, or inflammatory breast cancer;
  2. Patients previously received antineoplastic therapy or radiotherapy for any malignancy, excluding cured malignancies such as cervical carcinoma in situ, basal cell carcinoma, or squamous carcinoma;
  3. Patients received any other anti-tumor therapy at the same time, including endocrine therapy, bisphosphonates or immunotherapy;
  4. Patients have major surgical procedures unrelated to breast cancer within 4 weeks before the first medication, or not fully recovered from surgical procedures;
  5. Clinically significant pulmonary or cardiovascular disease;
  6. Failure to swallow, chronic diarrhea, intestinal obstruction, or presence of other factors affecting drug administration and absorption;
  7. Known to be allergic to any study drug or any of its excipients;
  8. History of immunodeficiency, including HIV-positive, or other acquired or congenital immunodeficiency diseases, or history of organ transplantation;
  9. Pregnant and lactating women;
  10. Patients with serious concomitant diseases or other comorbidities that will interfere with the planned treatment, or any other condition that is not suitable for participation assessed by investigator.

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: N/A
  • Interventional Model: Single Group 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: SHR-A1811
SHR-A1811 group
Drug: SHR-A1811 for injection
SHR-A1811 for injection
Other Names:
  • SHR-A1811 group

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
Objective Response Rate (ORR) Tumours (RECIST) v1.1
Time Frame: During 24 weeks of the neoadjuvant treatment
Objective Response Rate (ORR) according to Response Evaluation Criteria in Solid
During 24 weeks of the neoadjuvant treatment

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
Incidence of Adverse Events
Time Frame: from consent to 28 days after last dose
Evaluate the nature, incidence and severity of SHR-A1811 adverse events according to CTCAE 5.0
from consent to 28 days after last dose
Pathological complete response
Time Frame: At the time of surgery
pCR: ypT0/is ypN0
At the time of surgery
Event-free survival (EFS)
Time Frame: 5 years
EFS was defined as the time from randomization to any of the following events: disease progression during neoadjuvant therapy, local or distant recurrence, second primary malignancy (breast or other cancer), or death from any cause
5 years
Disease-free survival (DFS)
Time Frame: 5 years
Disease-free Survival, From the date of surgery to the first local, regional, contralateral or distant recurrence, and death from any cause
5 years
Residual cancer burden (RCB)
Time Frame: At the time of surgery
Residual cancer burden (RCB)
At the time of surgery

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.
Henan Cancer Hospital

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Zhenzhen Liu, PhD, Henan Cancer Hospital

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.
July 5, 2023

Primary Completion (Estimated)

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 31, 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.
May 31, 2029

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).
June 12, 2023

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.
June 12, 2023

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.
June 22, 2023

Study Record Updates

Last Update Posted (Estimated)

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.
November 4, 2024

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.
October 31, 2024

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.
October 1, 2024

More Information

Terms related to this study

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.
  • HELEN-015
  • BC-NEO-IIT-SHR-A1811 (Other Identifier: Jiangsu Hengrui Medicine Co.,Ltd.)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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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