An interventional study of Capillary samples using the VAMS Mitra device in Breast Cancer, sponsored by Institut Curie. Recruiting at 2 sites in France. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-07-23.
Sponsored by Institut Curie · Not applicable, Interventional, and Other
This is a prospective validation study, multicenter, open-label, single-arm study, evaluating the concordance between capillary microsampling (using the VAMS Mitra device) and venous sampling in patients undergoing CDK4/6 therapy.
Therapeutic drug monitoring (TDM) could serve as a valuable tool to minimize adverse events and maximize the efficacy of treatment in breast cancer patients receiving CDK4/6 inhibitors (ribociclib, abemaciclib, palbociclib). However, current TDM performed via venous blood draws can be inconvenient, especially for repeated sampling.
This study aims to evaluate the reliability of capillary (fingertip) microsampling-which could be performed at home as a less invasive alternative to standard venous sampling for measuring residual drug concentrations.
Five blood samples will be collected at a single time point during treatment, in accordance with the routine TDM schedule (the treatment duration will remain as per the prescribed CDK4/6 regimen): 4 capillary samples (using the VAMS Mitra device) including 2 samples collected by the study nurse who will train the patient to perform the 2 following samples him/herself; and 1 venous sample (5 mL heparinized tube).
14,825 studies on the registry are indexed under Breast Neoplasms; 3,319 are open to participants now.
This study's planned enrollment of 90 is above the median of 72 across 10,896 interventional studies indexed under Breast Neoplasms.
Browse Breast Neoplasms studies →Institut Curie is the lead sponsor of 135 studies on the registry; 29 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Five blood samples will be collected at a single time point during treatment, in accordance with the routine TDM schedule (the treatment duration will remain as per the prescribed CDK4/6 regimen). The patients will also complete an acceptability Questionnaire following the samplings.
Other: Capillary samples using the VAMS Mitra device
Five blood samples will be collected at a single time point during treatment, in accordance with the routine TDM schedule (the treatment duration will remain as per the prescribed CDK4/6 regimen). * 4 capillary samples (using the VAMS Mitra device) including 2 samples collected by the study nurse then 2 samples collected by the patient. * 1 venous sample (5 mL heparinized tube).
Also known as: Venous sample
This study also gives Palbociclib, Ribociclib, Abemaciclib. No intervention listed here names it: that was found by reading the record.
Measurement of the concordance between the drug concentrations obtained from capillary and venous sampling.
The primary objective of the study is therefore to validate the reliability of capillary sampling (using the VAMS Mitra device) as an alternative to venous sampling for TDM of CDK4/6 inhibitors (ribociclib, abemaciclib, or palbociclib) in breast cancer patients. The primary endpoint will be the concordance between drug concentrations obtained from venous and capillary samples, assessed through Bland-Altman analysis.
Time frame: Day 1
Intra-patient's variability of the measurements from microsamplings
Reproducibility of capillary microsampling will be evaluated from the four replicate VAMS collections (two patient-collected, two nurse-collected). We will estimate within-patient variability as the coefficient of variation (CV %) across replicates and report duplicate %-difference.
Time frame: Day 1
Acceptability of the device, as assessed by a patient satisfaction questionnaire.
A satisfaction questionnaire for the use of VAMS-type microsampling device will be completed by the patient after the samples collection. Patient acceptability and usability of VAMS will be summarized descriptively with exploratory comparisons by age, sex, and collection setting (clinic vs home where applicable).
Time frame: Day 1
Plan to share: Yes — Sponsor will share de-identified data sets. Documents generated under the project will be disseminated in accordance with Institut Curie policies.
Supporting information: Study protocol, Statistical analysis plan
Time frame: Data requests can be submitted starting 9 months after last article publication and will be made accessible for up to 12 months.
Access criteria: Access to trial individual participant data can be requested by qualified researchers engaging in independent scientific research, and will be provided following review and approval of a research proposal and Statistical Analysis Plan (SAP) and execution of a data sharing agreement (DSA).
No publications or documents are linked to this record.
Start is estimated for Jun 2026; primary completion for Jan 2028, 19 months later.
Of 2,661 non-industry interventional studies with no phase under Breast Neoplasms, half reached primary completion within 33 months of starting (the median), counting those still running; a quarter within 16 and three quarters within 66. This study's planned 19 months is below that.
Counting every sponsor, half of 2,771 studies reached it within 33 months; a quarter within 15 and three quarters within 66.
How these figures are worked out, and which studies are left out of them.
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
Contact study teamGet an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.