UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000050326
Receipt number R000057285
Scientific Title Cohort study of treatment strategy for low risk HER2 positive breast cancer based on response-guided therapy and shared decision making
Date of disclosure of the study information 2023/03/01
Last modified on 2023/04/23 16:37:55

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Basic information

Public title

Cohort study of treatment strategy for low risk HER2 positive breast cancer based on response-guided therapy and shared decision making

Acronym

HERREST study

Scientific Title

Cohort study of treatment strategy for low risk HER2 positive breast cancer based on response-guided therapy and shared decision making

Scientific Title:Acronym

HERREST study

Region

Japan


Condition

Condition

HER2 positive breast cancer

Classification by specialty

Breast surgery

Classification by malignancy

Malignancy

Genomic information

NO


Objectives

Narrative objectives1

The objective is to evaluate whether choosing treatment through Response-guided therapy for low-risk HER2 positive breast cancer patients with tumor size of 1-3 cm leads to a reduction in side effects and improvement in prognosis. Additionally, it aims to evaluate whether the choice of treatment based on Shared decision making improves the satisfaction of medical staff and patients.

Basic objectives2

Safety,Efficacy

Basic objectives -Others


Trial characteristics_1

Exploratory

Trial characteristics_2

Pragmatic

Developmental phase

Not applicable


Assessment

Primary outcomes

Disease-free survival for all prospective study subjects

Key secondary outcomes

Pathological evaluation by each subgroup
OS for all prospective study subjects
DFS,OS for each subgroup
Final percentage of patients who did not receive EC
Adverse events overall and by each subgroup
Treatment response of each regimen
Clinical response especially for taxane and anti-HER2 therapy
Actual results of SDM and the reasons for their decisions
Patient and medical staff with the process of response-guided therapy
Qualitative evaluation of SDM in response-guided therapy


Base

Study type

Observational


Study design

Basic design


Randomization


Randomization unit


Blinding


Control


Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms


Purpose of intervention


Type of intervention


Interventions/Control_1


Interventions/Control_2


Interventions/Control_3


Interventions/Control_4


Interventions/Control_5


Interventions/Control_6


Interventions/Control_7


Interventions/Control_8


Interventions/Control_9


Interventions/Control_10



Eligibility

Age-lower limit

20 years-old <=

Age-upper limit

80 years-old >=

Gender

Female

Key inclusion criteria

1) Histologically diagnosed invasive cancer that has not been treated in any way
2) 1cm =<cT =< 3cm, cN0
3) Women between 20 and 80 years of age
4) HER2 positive breast cancer IHC 3 plus or FISH amplification
5) The latest laboratory values within 4 weeks prior to enrollment meet all of the following
1 Neutrophil count >=1500/mm3 or white blood cell count >= 3000/mm3
2 Hemoglobin >= 8.0 g/dl
3 Platelet count >=100000/mm3
4 Total bilirubin =< less than twice the institutional standard
5 AST or ALT =< 2.5 times or less than the institutional standard
6 Creatinine =< 2.0 mg/dL
6) Left ventricular ejection fraction >50% on the most recent echocardiography
7) PS, 0-2

Key exclusion criteria

1) Concurrent bilateral breast cancer, multiple ipsilateral breast cancers of different subtypes
2) History of breast cancer, active overlapping cancers, history of allergies that would result in protocol interruption
3) History of serious cardiac disease (heart failure, myocardial infarction, ischemic disease, vascular disease requiring treatment)
4) Difficulty in continuing hospital visits due to physical inactivity
5) Complicated mental illness or psychiatric symptoms that make participation in the study difficult
6) In case the attending physician determines that the subject is not suitable for participation in the study

Target sample size

100


Research contact person

Name of lead principal investigator

1st name Eiichi
Middle name
Last name Shiba

Organization

Osaka Breast Clinic

Division name

Department of Breast and Endocrine Surgery

Zip code

553-0007

Address

1-13-8 Ohiraki, Fukushima, Osaka City, Osaka

TEL

06-6465-4108

Email

eshiba@goo.jp


Public contact

Name of contact person

1st name Noriko
Middle name
Last name Fujita

Organization

Osaka Breast Clinic

Division name

Department of Breast and Endocrine Surgery

Zip code

553-0007

Address

1-13-8 Ohiraki, Fukushima, Osaka City, Osaka

TEL

06-6465-4108

Homepage URL


Email

noriko_f_0505@yahoo.co.jp


Sponsor or person

Institute

Eiichi Shiba,the Department of Breast and Endocrine Surgery, Osaka Breast Clinic

Institute

Department

Personal name



Funding Source

Organization

Osaka Breast Clinic

Organization

Division

Category of Funding Organization

Other

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Osaka Breast Clinic

Address

1-13-8 Ohiraki, Fukushima, Osaka City, Osaka

Tel

06-6465-4108

Email

noriko_f_0505@yahoo.co.jp


Secondary IDs

Secondary IDs

NO

Study ID_1


Org. issuing International ID_1


Study ID_2


Org. issuing International ID_2


IND to MHLW



Institutions

Institutions



Other administrative information

Date of disclosure of the study information

2023 Year 03 Month 01 Day


Related information

URL releasing protocol


Publication of results

Unpublished


Result

URL related to results and publications


Number of participants that the trial has enrolled


Results


Results date posted


Results Delayed


Results Delay Reason


Date of the first journal publication of results


Baseline Characteristics


Participant flow


Adverse events


Outcome measures


Plan to share IPD


IPD sharing Plan description



Progress

Recruitment status

Open public recruiting

Date of protocol fixation

2023 Year 01 Month 30 Day

Date of IRB

2023 Year 01 Month 30 Day

Anticipated trial start date

2023 Year 02 Month 13 Day

Last follow-up date

2033 Year 02 Month 28 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information

Research Methodology Overview

Prospective study
Enrollment period: 5 years from February 13, 2023.
Follow-up period: 5 years after the last case enrollment.
Study period: 12 years from February 13, 2023.

Retrospective study
Enrollment period: from September 1, 2006 to the last enrollment.
Follow-up period: 5 years after the last enrollment.

(1) Survival curves using the Kaplan-Meier method and recurrence-free survival and overall survival rates will be calculated for all patients in the prospective study and for DFS and OS in each subgroup. The results will be compared among retrospective studies, previously reported results, and each subgroup.
(2) The percentage of satisfaction with response-guided therapy will be evaluated at four points (preoperative, 1 year postoperative, 3 years postoperative, and 5 years postoperative) to investigate the change over time in the percentage of satisfaction with each question on the part of both providers and patients.
(3) The quality of SDM will be evaluated using the SDM-Q-9/SDM-Q-Doc before and 1 year after surgery.


Management information

Registered date

2023 Year 02 Month 13 Day

Last modified on

2023 Year 04 Month 23 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000057285