Breast CancerPhase 2IRISNCT04383275
Stage I HER2 Positive Invasive Breast Cancer De-escalation Study(IRIS)
A Phase 2 study testing capecitabine and trastuzumab and endocrine therapy and trastuzumab in people with Breast Cancer, run by Fudan University at 1 site in China.
Trial summary
This is an open label, phase II study evaluating the efficacy and safety of trastuzumab combined with oral chemotherapy or endocrine therapy in patients with HER-2 positive stage I breast cancer. Read more about this study
- Who is it for?
- Ages 18 to 70 years, women only
- Conditions the study is for
- Breast Cancer
- What is being tested?
- capecitabine and trastuzumab and endocrine therapy and trastuzumab
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 367 participants
- Where
- 1 siteChina
- Study dates
- 20 May 2020to 6 Jul 2031
- Phase
- Phase 2
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 70 years
- Women only
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- 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);
- In IRIS-A cohort, 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;
- In IRIS-B cohort, a patient need to be HR positive (ER and / or PR expression ≥10%) and the longest diameter of invasive cancer could not exceed 1cm;
- 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;
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- 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.
Who cannot join
- 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;
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- 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.
Trial locations and contacts
1 site in 1 country.
China1 site
Breast cancer institute of Fudan University Cancer Hospital
Shanghai, Shanghai Municipality, 200032
About this study
Official title: An Open-label,Phase II Study Evaluating the Efficacy and Safety of Trastuzumab Combined With Oral Chemotherapy or Endocrine Therapy in Patients With HER-2 Positive Stage I Breast Cancer
This is an open label, phase II study evaluating the efficacy and safety of trastuzumab combined with oral chemotherapy or endocrine therapy in patients with HER-2 positive stage I breast cancer.
Read the detailed description
This study has two cohorts. In Cohort A, patients who met the inclusion criteria(ER，PR<10%, T≤2cm or ER,PR ≥10% 1cm<T≤2cm）would be given capecitabine for 6 cycles with standard trastuzumab for 1 year, in which HR+ patients would be given endocrine therapy for 5 years. In Cohort B, patients who met the inclusion criteria(ER,PR ≥10% T≤1cm) would be given endocrine therapy (premenopausal: tamoxifen or toremifene; postmenopausal: letrozole or anastrozole or exemestane) combined with standard trastuzumab for 1 year and complete endocrine therapy for 5 years.
- Conditions
- Breast Cancer
- Being tested
- capecitabine and trastuzumab, endocrine therapy and trastuzumab
- Medical subject headings
- Breast Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
capecitabine and trastuzumabDrug
In IRIS-A cohort, patients who met the inclusion criteria(ER，PR<10%, T≤2cm or ER,PR ≥10% 1cm<T≤2cm）would be given capecitabine for 6 cycles with standard trastuzumab for 1 year, in which HR+ patients would be given endocrine therapy for 5 years.
endocrine therapy and trastuzumabDrug
In IRIS-B cohort, patients who met the inclusion criteria(ER,PR ≥10% T≤1cm) would be given endocrine therapy (premenopausal: tamoxifen or toremifene; postmenopausal: letrozole or anastrozole or exemestane) combined with standard trastuzumab for 1 year and complete endocrine therapy for 5 years.
| Study group | Role | What they receive |
|---|---|---|
| IRIS-A | Experimental | Not described Receives: Drug: capecitabine and trastuzumab |
| IRIS-B | Experimental | Not described Receives: Drug: endocrine therapy and trastuzumab |
What is being measured
The primary outcome is the main question the study is designed to answer.
iDFS
invasive disease-free survival
Measured: 5 years
Secondary outcomes (2)
DDFS
distant disease-free survival，
Measured: 5 years
OS
overall survival
Measured: 5 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 May 2020
- Study start20 May 2020
- Primary completion6 Jul 2031 (estimated)
- Study completion6 Jul 2031 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Breast CancerStudies of the same condition, open and under way.
- More trials run by Fudan UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 367 participants (actual)
Sponsor and investigators
- Lead sponsor
- Fudan University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Zhimin Shao, Fudan University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04383275
- Sponsor's protocol ID
- SCHBCC-N030
- Acronym
- IRIS
- Status last verified
- Aug 2026
- First submitted
- 7 May 2020
- Last updated
- 19 Aug 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 19 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- An Open-label,Phase II Study Evaluating the Efficacy and Safety of Trastuzumab Combined With Oral Chemotherapy or Endocrine Therapy in Patients With HER-2 Positive Stage I Breast Cancer
- ClinicalTrials.gov ID
- NCT04383275
- Acronym / sponsor ID
- IRIS / SCHBCC-N030
- Conditions
- Breast Cancer
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Active, not recruiting
- Enrolment
- 367 participants (actual)
- Lead sponsor
- Fudan UniversityUniversity, hospital or other
- Study start
- 20 May 2020 (actual)
- Primary completion
- 6 Jul 2031 (estimated)
- Study completion
- 6 Jul 2031 (estimated)
- First posted
- 12 May 2020 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is an open label, phase II study evaluating the efficacy and safety of trastuzumab combined with oral chemotherapy or endocrine therapy in patients with HER-2 positive stage I breast cancer.
Detailed description
This study has two cohorts. In Cohort A, patients who met the inclusion criteria(ER，PR<10%, T≤2cm or ER,PR ≥10% 1cm<T≤2cm）would be given capecitabine for 6 cycles with standard trastuzumab for 1 year, in which HR+ patients would be given endocrine therapy for 5 years. In Cohort B, patients who met the inclusion criteria(ER,PR ≥10% T≤1cm) would be given endocrine therapy (premenopausal: tamoxifen or toremifene; postmenopausal: letrozole or anastrozole or exemestane) combined with standard trastuzumab for 1 year and complete endocrine therapy for 5 years.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| IRIS-A | Experimental | Drug: capecitabine and trastuzumab |
| IRIS-B | Experimental | Drug: endocrine therapy and trastuzumab |
Who may qualify
- Ages
- 18 to 70 years
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (9 listed)
- 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);
- In IRIS-A cohort, 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;
- In IRIS-B cohort, a patient need to be HR positive (ER and / or PR expression ≥10%) and the longest diameter of invasive cancer could not exceed 1cm;
- The pathological type of immunohistochemistry must meet the following conditions: HER-2 (3+) or HER-2 (0-2 +) with FISH detection is amplified;
Key exclusion criteria (9 listed)
- 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;
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| capecitabine and trastuzumabIn IRIS-A cohort, patients who met the inclusion criteria(ER，PR<10%, T≤2cm or ER,PR ≥10% 1cm<T≤2cm）would be given capecitabine for 6 cycles with standard trastuzumab for 1 year, in which HR+ patients would be given endocrine therapy for 5 years. | Drug | IRIS-A |
| endocrine therapy and trastuzumabIn IRIS-B cohort, patients who met the inclusion criteria(ER,PR ≥10% T≤1cm) would be given endocrine therapy (premenopausal: tamoxifen or toremifene; postmenopausal: letrozole or anastrozole or exemestane) combined with standard trastuzumab for 1 year and complete endocrine therapy for 5 years. | Drug | IRIS-B |
Primary outcome
iDFS
Time frame: 5 years
invasive disease-free survival
2 secondary outcomes
DDFS
Time frame: 5 years
OS
Time frame: 5 years
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 Aug 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing capecitabine and trastuzumab and endocrine therapy and trastuzumab in people with Breast Cancer, run by Fudan University at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 9 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: under way, not looking for participants, as of the sponsor's last update on 19 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
iDFS (time frame: 5 years). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Aug 2026.