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New combo therapy shows promise for tough breast cancer

NCT ID NCT07164976

Disease control Sponsor: Nagoya City University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests a combination of two drugs, ribociclib and anastrozole, in people with a common type of advanced breast cancer (HR-positive, HER2-negative) that has spread or come back. The goal is to see if the combo can shrink tumors and how safe it is. About 86 adults in Japan will take part, starting with a small safety phase and then a larger phase to measure response.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1/2

Runs two stages together: safety and dose first, then whether the treatment works.

Participants

About 86 people

The number the study aims to enrol. It can still change while the study runs.

Started

Oct 2025

Expected to finish

Apr 2030

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Histologically confirmed invasive breast cancer. * Hormone receptor-positive (ER positive and/or PgR positive) and HER2-negative disease: ER positive: ≥1% positive cells or Allred score ≥3. PgR positive: ≥1% positive cells or Allred score ≥3. HER2 negative: IHC 0, 1+, or 2+ with no ISH amplification. * Advanced or recurrent breast cancer (unresectable, recurrent, or Stage IV). * Age ≥18 years at registration. * ECOG Performance Status of 0-1. Exclusion Criteria: * Symptomatic visceral metastases or deemed unsuitable for endocrine therapy. * Prior endocrine therapy or chemotherapy for metastatic/recurrent disease. * Prior CDK4/6 inhibitor exposure (perioperative or metastatic setting). * Adjuvant endocrine therapy within 35 days before study start. * Active malignancy other than allowed exceptions (e.g., resected skin cancers, ≥5-year disease-free cancers). * Hypersensitivity to ribociclib, anastrozole, or their components (including soy/peanut allergy, sugar intolerances).

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Conditions

The condition(s) this trial relates to.

breast cancer breast neoplasm hormone receptor-positive breast cancer

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Breast cancer

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Nagoya City University

    RECRUITING

    Nagoya, Japan

More trials for these conditions

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