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Breast cancer chemo study tracks calcium and vitamin changes

NCT ID NCT03249389

Knowledge-focused Sponsor: Institut du Cancer de Montpellier - Val d'Aurelle Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at how calcium and vitamin markers change in 146 breast cancer patients receiving standard adjuvant chemotherapy. Researchers measured these markers before, during, and after treatment to understand metabolic effects. The goal was to see how often patients develop high calcium in urine and how vitamin balance shifts over the course of chemotherapy.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this could help doctors better manage calcium and vitamin levels in breast cancer patients undergoing chemotherapy.
What could go wrong
This is an observational study with no treatment being tested, so it won't directly improve outcomes. Results may not apply to all patients.

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

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

146 people

The number who actually took part.

Started

Oct 2015

Finished

Sep 2016

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

Female participants only

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: * Mammary adenocarcinoma to receive 6 cycles of adjuvant chemotherapy. * Performance index according to who less than or equal to 1. * Patient older than 18 years and older. * Patient affiliated to a social security scheme or beneficiary of an equivalent French social protection system * The informed consent signed and before any procedures specific to the test screening. * Pregnancy test negative for women and a means of contraception for women and men of reproductive age Exclusion Criteria: * The presence of metastatic disease. * Other cancer (except basal-cell skin carcinoma and cancer of the cervix in situ treated adequately and curative) treated in the 3 previous years. * Contraindications for the calcium and colecalciferol:-severe hypersensitivity to vitamin D or calcium supplementation or any of the excipients * Pathology and/or conditions causing a hypercalcemia and/or hypercalciuria * Calcium lithiasis - tissue calcification * Hypervitaminosis D • Presence of significant co-morbidities: Uncontrolled endocrine disease. Known disorders of the phospho-calcium balance in the last 3 years. Osteopenia or osteoporosis proven treatment vitamin and calcium. * Concomitant treatment with experimental products. * Pregnant or nursing * Legal incapacity or limited legal capacity. Medical or psychological conditions, allowing the subject to complete the study or to sign the consent (art.) L.1121 - 6, L.1121 - 7, L.1211 - 8, L1211-9).

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Conditions

The condition(s) this trial relates to.

breast cancer breast neoplasm

As listed by the trial registrant

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

Breast cancer

Contacts and locations

Locations

  • Institut régional du Cancer de Montpellier

    Montpellier, 34298, France

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