AuthorisedTherapeutic exploratory (Phase II)Interventional

Optimization of De-EscalatiON strategies in early breast cancer

Modern breast cancer care often uses powerful treatments like chemotherapy, hormone therapy, and targeted medicines. While effective, these can cause difficult side effects. This phase 2 clinical study is testing 'de-escalation' strategies for early breast cancer. De-escalation means carefully lowering the amount or duration of treatment for people who may not need standard, heavy therapy to recover. The trial looks at three main types of breast cancer: HER2-positive, triple-negative, and hormone-receptor-positive (HR+/HER2-). Doctors will use genetic tumour tests, scans, and tissue samples to work out who has a lower risk and can safely receive milder treatment. The ultimate goal is to clear the cancer just as effectively, improve quality of life, and help patients avoid unnecessary drug toxicity.

At a glance

Status

Authorised

Phase

Therapeutic exploratory (Phase II)

Sponsor

Istituto Di Candiolo Fondazione Del Piemonte Per L'Oncologia IRCCS

Enrolment target

Start

14 Sep 2026

breast cancer

What is this study about?

When people are diagnosed with early breast cancer, standard care often involves intensive therapy. This may combine surgery, chemotherapy, hormone tablets, and targeted biological drugs. While these treatments cure many people, they can be tough on the body and cause lingering side effects like exhaustion, sickness, and nerve pain. Doctors are now asking whether everyone truly needs the most aggressive treatments, or if some people can do just as well with less.

This study explores what researchers call 'treatment de-escalation'. By taking a closer look at each person's tumour biology—including specific genetic tests and biological markers—the study team aims to tailor treatment precisely. For some types of breast cancer, such as HER2-positive or triple-negative tumours, doctors will see if a gentler course of drugs can clear all signs of cancer before surgery.

For hormone-sensitive tumours (HR+/HER2-), researchers will test how the cancer responds to a short period of hormone therapy. By measuring changes in tumour growth markers, they can decide who needs full chemotherapy and who might safely skip it. If successful, this research could lead to kinder, smarter treatment plans that keep people cancer-free while protecting their day-to-day wellbeing.

Key takeaways

The trial tests whether milder treatments work just as well as heavy therapy for early breast cancer.
It uses tumour genetics to help doctors give patients only the medicine they truly need.
Open to adults aged 18 and older diagnosed with early-stage breast cancer.
The main goals are to clear cancer, reduce side effects, and improve quality of life.
Taking part is completely voluntary, and you can withdraw at any time.

Who may be eligible?

This study is open to adults aged 18 and older who have recently been diagnosed with early-stage breast cancer. Both women and men are welcome to join. To be considered, your cancer must be in its early stages and not have spread to distant parts of your body.

The trial includes people with different biological forms of breast cancer, including triple-negative, HER2-positive, and hormone-receptor-positive (HR+/HER2-) disease. Because the trial tailors therapy to the exact biology of the tumour, your medical team will test your cancer cells to see which specific study group you fit into.

You may not be eligible if your cancer has already spread to other organs, or if you have other major medical conditions that make taking these medicines unsafe. Your cancer specialist will go through your full medical history and current health status before deciding if this study is an option for you.

Could this study suit you?

Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.

I am aged 18 or older.
I have been diagnosed with early-stage breast cancer.
My cancer has not spread to other parts of my body.
I have not yet started my main breast cancer treatment.
I am able to attend regular hospital visits for check-ups and treatment.

Answer every question to see your result.

What does participation involve?

If you take part, your care team will first run standard checks, including blood tests, scans (such as an MRI), and a small tumour biopsy. You will then be placed into a treatment group matched to your specific tumour type. Treatments may include common breast cancer medicines such as oral hormone tablets (like letrozole, anastrozole, or tamoxifen), targeted drugs, or milder chemotherapy infusions.

Throughout the study, you will attend regular hospital appointments so doctors can track your progress and manage any side effects. You will also be asked to complete quality-of-life questionnaires to share how you feel day to day. After your main treatment and surgery are finished, the team will continue to follow your health for several years to make sure the cancer stays away.

Potential risks and benefits

Taking part may give you access to a gentler treatment plan that reduces the harsh side effects often caused by standard chemotherapy. However, there is a risk that a reduced treatment plan might not work as well, or that you could still experience known side effects from the cancer medicines, such as nausea, tiredness, or joint ache. Your health will be monitored very closely at every step. Joining is entirely your choice, and you are free to leave the trial at any time without your regular NHS care being affected.

Locations (1)

Some site locations are approximate. We're improving this — please verify with the trial team before travelling.

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Unverified
Italy

Common questions

What does 'de-escalation' mean?

It means carefully reducing the amount, intensity, or number of cancer drugs you receive, aiming to give you just enough treatment to cure the cancer while avoiding unnecessary side effects.

Will I still have surgery?

Yes. Surgery to remove any remaining tumour is a standard part of breast cancer care and remains a key step in this trial.

Will I definitely avoid chemotherapy?

Not necessarily. Some people with higher-risk tumours will still receive chemotherapy, but the study aims to safely spare those who have a lower risk.

Do I have to pay to take part?

No. Clinical trials in the UK do not cost you anything to join, and all study-related medicines and tests are provided free of charge.

What happens if my cancer does not shrink?

Your doctors will monitor your tumour closely. If it is not responding well to a milder treatment, they will switch you back to standard, stronger treatments straight away.