App aims to cut cancer risk by cleaning up your diet

NCT ID NCT07436312

Prevention Sponsor: Gustave Roussy, Cancer Campus, Grand Paris Source: ClinicalTrials.gov ↗

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

Summary

This study tests whether a smartphone app, combined with nutrition education, can help people at high risk for cancer eat healthier and reduce their cancer risk. About 170 participants will either get the app or standard advice, and researchers will measure changes in diet quality after 12 weeks. The goal is to see if cutting back on ultra-processed foods can improve overall diet and potentially prevent cancer.

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Study facts

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

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 170 people

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

Started

May 2026

Expected to finish

Mar 2028

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: 1. Age \> 18 years, 2. Individuals at increased risk of different cancers as defined within the Interception program, 3. With a baseline WCRF score ≤ 5 at entry in the Interception program, 4. Agreeing to participate and who have given their written agreement for the study, 5. Agreeing to fill in the questionnaires on the dedicated platform for the duration of the study, 6. Participant have and accept to use their smartphone, 7. All participants must understand spoken and written French language Exclusion Criteria: 1. Psychiatric disorders or cognitive impairments precluding participation, 2. Patient under guardianship or deprived of his liberty by a judicial or administrative decision or incapable of giving its consent.

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Conditions

The condition(s) this trial relates to.

breast cancer breast neoplasm colon carcinoma colonic neoplasm Colorectal Neoplasms, Hereditary Nonpolyposis Lynch syndrome malignant pancreatic neoplasm pancreatic neoplasm

As listed by the trial registrant

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

Breast cancer Colon cancer Germline BRCA1 gene mutation Germline BRCA2 gene mutation Lynch syndrome Pancreas cancer

How to take part

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

The places running it

3 sites. The list below names each one and where it is.
The official record

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

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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.

App aims to cut cancer risk by cleaning up your diet

What the study statuses mean