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CompletedNCT01349842CirCé01Updated Nov 24, 2025

Circulating Tumor Cells to Guide Chemotherapy for Metastatic Breast Cancer

A Phase 3 interventional study of Blood sampling and Usual clinical and radiological criteria in Breast Cancer Ductal Infiltrating Metastatic, sponsored by Institut Curie. Completed at 7 sites in France. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-11-24.

Sponsored by Institut Curie · Phase 3, Interventional, and Diagnostic

From the registry’s dates

  • Registered 1 year 2 months after the study started (first participant enrolled Mar 2010, registered May 2011).
Phase
Phase 3
Study type
Interventional
Enrollment
265
Allocation
Randomized
Ages
18 Years and older
Sex
Female
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Study summary

Evaluation of the use of Circulating tumour Cells to guide chemotherapy from the 3rd line of chemotherapy for metastatic breast cancer.

Read the detailed description

Phase III multicentre, randomized, open-label study comparing early evaluation of the efficacy of chemotherapy by determination of circulating tumour cells versus conventional clinical and radiological evaluation.

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Conditions studied

  • Breast Cancer Ductal Infiltrating Metastatic
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In context

Lead sponsor

Institut Curie is the lead sponsor of 134 studies on the registry; 28 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  • Women over the age of 18 years.
  • WHO performance status: 0 to 4.
  • Metastatic breast cancer.
  • Progression after 2 lines of chemotherapy with decision to initiate third-line chemotherapy.
  • Disease evaluable by CTC (CTC-positive before starting chemotherapy).
  • Histology: lobular or ductal adenocarcinoma.
  • Information of the patient and signature of the informed consent form by the patient or her legal representative.

Exclusion criteria

Exclusion Criteria:

  • Disease not evaluable by CTC (CTC-negative before starting chemotherapy).
  • History of other potentially metastatic cancer (stage III or IV cancer) different from breast cancer.
  • Histology other than lobular or ductal adenocarcinoma.
  • Pregnant woman, women likely to become pregnant or nursing mothers.
  • Persons deprived of their freedom or under guardianship.
  • Women unable to comply with the medical follow-up of the study for geographical, social or mental reasons.
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Study design

Phase
Phase 3
Primary purpose
Diagnostic
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
265 participants (actual)

Study arms

  • Experimental
    Circulating Tumor Cells

    Centralized determination of CTC by CellSearch® technology (Veridex), the only technology currently validated in clinical practice for the early evaluation of response to chemotherapy of breast cancers. This evaluation is performed by blood sampling comparing the CTC level before the first injection of each new line of chemotherapy. Chemotherapy can only be continued in the case of a positive CTC response. Discontinuation of chemotherapy can also be decided by the clinician on the basis of other clinical or radiological arguments.

    Biological: Blood sampling

  • Other
    Clinical and radiological criteria

    Management of chemotherapy according to the usual clinical and radiological criteria adopted by the patient's attending physician.

    Other: Usual clinical and radiological criteria

Interventions

  • BiologicalBlood sampling

    20ml of patient peripherical blood will be collected

  • OtherUsual clinical and radiological criteria

    Clinical examination, tumoral evaluation

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What researchers measure

Primary outcomes

  1. Overall Survival

    Overall survival (from date of randomization

    Time frame: 7 years

Secondary outcomes

  1. Measure of safety and tolerability

    A list of the most frequent toxicity was established. The ranks 3 and 4 will be more specificaly collected.

    Time frame: 7 years

  2. Improvement of quality of life

    Time frame: 7 years

  3. Time to progression, to discontinuation of therapy after 3rd line.

    Time frame: 7 years

  4. Comparison of CTC with usual serum tumour markers

    Time frame: 7 years

  5. Medico-economical analysis

    Time frame: 5 years

  6. Estimate the clinical interest, in particular forecast, of the circulating tumoral DNA

    Time frame: 3 years

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Study locations

7 sites
  • Centre Georges Francois Leclerc
    Dijon, 21079, France
  • Clinique Victor Hugo
    Le Mans, 72000, France
  • Chu Limoges
    Limoges, 87042, France
  • Institut Curie
    Paris, 75005, France
  • Hopital Saint Louis
    Paris, 75475, France
  • Institut Rene Huguenin Curie
    Saint-Cloud, 92210, France
  • Institut de Canacerologie de L'Ouest
    Saint-Herblain, 44805, France
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References and documents

Publications

  • Cabel L, Berger F, Cottu P, Loirat D, Rampanou A, Brain E, Cyrille S, Bourgeois H, Kiavue N, Deluche E, Ladoire S, Campone M, Pierga JY, Bidard FC. Clinical utility of circulating tumour cell-based monitoring of late-line chemotherapy for metastatic breast cancer: the randomised CirCe01 trial. Br J Cancer. 2021 Mar;124(7):1207-1213. doi: 10.1038/s41416-020-01227-3. Epub 2021 Jan 21. PubMed 33473163 ↗
  • Helissey C, Berger F, Cottu P, Dieras V, Mignot L, Servois V, Bouleuc C, Asselain B, Pelissier S, Vaucher I, Pierga JY, Bidard FC. Circulating tumor cell thresholds and survival scores in advanced metastatic breast cancer: the observational step of the CirCe01 phase III trial. Cancer Lett. 2015 May 1;360(2):213-8. doi: 10.1016/j.canlet.2015.02.010. Epub 2015 Feb 17. PubMed 25700777 ↗

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 24, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01349842
Lead sponsor
Institut Curie
Responsible party
Sponsor
First posted
May 9, 2011
Start date
Mar 2, 2010
Primary completion
Jan 2016
Completion
Nov 6, 2018
Last update
Nov 24, 2025

Study contacts

PIERGA Jean-Yves, MD
principal investigator · Institut Curie

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Nov 2025. You cannot join it, but the record below documents what was studied.

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