Stage I HER2 Positive Invasive Breast Cancer De-escalation Study(IRIS-C/D)

NCT ID: NCT04922008

Last Updated: 2021-06-10

Basic Information

• Recruitment Status: NOT_YET_RECRUITING
• Clinical Phase: PHASE2
• Total Enrollment: 356 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2021-07-01
• Study Completion Date: 2026-06-30

Brief Summary

This is an open label, phase II study evaluating the efficacy and safety of trastuzumab combined with oral chemotherapy (capecitabine or vinorelbine) in patients with HER-2 positive stage I breast cancer.

Conditions

Breast Cancer

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

IRIS-C

Group Type: EXPERIMENTAL

capecitabine and trastuzumab

Intervention Type: DRUG

In IRIS-C cohort, patients who met the inclusion criteria(ER and PR\<10%, T≤2cm or ER and/or PR ≥10% 1cm\<T≤2cm) would be given capecitabine for 4 cycles with standard trastuzumab for 1 year, in which HR+ patients would be given endocrine therapy for 5 years.

IRIS-D

Group Type: EXPERIMENTAL

vinorelbine and trastuzumab

Intervention Type: DRUG

In IRIS-4 cohort, patients who met the inclusion criteria(ER and PR\<10%, T≤2cm or ER and/or PR ≥10% 1cm\<T≤2cm) would be given vinorelbine for 4 cycles with standard trastuzumab for 1 year, in which HR+ patients would be given endocrine therapy for 5 years.

Interventions

capecitabine and trastuzumab

In IRIS-C cohort, patients who met the inclusion criteria(ER and PR\<10%, T≤2cm or ER and/or PR ≥10% 1cm\<T≤2cm) would be given capecitabine for 4 cycles with standard trastuzumab for 1 year, in which HR+ patients would be given endocrine therapy for 5 years.

Intervention Type: DRUG

vinorelbine and trastuzumab

In IRIS-4 cohort, patients who met the inclusion criteria(ER and PR\<10%, T≤2cm or ER and/or PR ≥10% 1cm\<T≤2cm) would be given vinorelbine for 4 cycles with standard trastuzumab for 1 year, in which HR+ patients would be given endocrine therapy for 5 years.

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Females 18-70 years old;
• Pathological confirmed of stage I breast cancer: histologically confirmed that the longest diameter of invasive cancer is no more than 2cm and the lymph node is negative (N0);
• If a patient is HR negative(ER/PR<10%), the longest diameter of invasive cancer could not exceed 2cm; while if a patient is HR positive(ER and/or PR ≥10%）,the longest diameter of invasive cancer is greater than 1cm and no more than 2cm;
• The pathological type of immunohistochemistry must meet the following conditions: HER-2 (3+) or HER-2 (0-2 +) with FISH detection is amplified;
• For patients with invasive lesions on both sides, if both lesions are HER-2 positive and meet the tumor size requirements, then can be enrolled;
• Has adequate organ function meeting the following criteria: (1) adequate bone marrow function: hemoglobin ≥ 90 g/L (no blood transfusion within 14 days); absolute neutrophil count ≥ 1.5 x 109 /L; platelet count ≥ 100 * 109 /L; (2)adequate liver and kidney function: Alanine Aminotransferase (ALT) ≤ 3×upper limit of normal (ULN), Aspartate Aminotransferase (AST)

≤ 3×ULN, Total Bilirubin (TBIL)≤ 1.5×ULN, serum creatinine ≤ 1×ULN#and with endogenous creatinine clearance rate of >50 ml/min (Cockcroft-Gault formula);

• LVEF>50%;
• The patient voluntarily joined the study, signed the informed consent form, had good compliance, and cooperated with the follow-up.

Exclusion Criteria

• Has received neoadjuvant therapy (include chemotherapy, targeted therapy, radiotherapy or endocrine therapy;
• Has previous history of additional malignancy, with the exception of adequately treated basal cell carcinoma and cervical carcinoma in situ;
• Has metastic (Stage 4) breast cancer;
• Pregnant or breast feeding women, or women of childbearing age who cannot practice effective contraceptives;
• Patients participating in other clinical trials at the same time;
• Has severe organ dysfunction (cardiopulmonary liver and kidney) insufficiency, left ventricular ejection fraction (LVEF) < 50% (cardiac ultrasound); severe cardio cerebral vascular disease within the 6 months previous of randomization (such as unstable angina, chronic heart failure, uncontrolled hypertension with blood pressure>150/90mmHg, myocardial infarction, or cerebral blood vessel); diabetic patients with poor blood glucose control; patients with severe hypertension;
• Has severe or uncontrolled infection;
• Has a history of psychotropic substance abuse and were unable to abandon drug habits, or those with history of mental disorders;
• The researchers considered patients to be unsuitable for the study.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 70 Years
• Eligible Sex: FEMALE
• Accepts Healthy Volunteers: No

Sponsors

Fudan University

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Other Identifiers

SCHBCC-N034

Identifier Type: -

Identifier Source: org_study_id