# Analyses of Exosomes in the Cerebrospinal Fluid for Breast Cancer Patients With Suspicion of Leptomeningeal Metastasis.

> **NCT03974204** · NA · WITHDRAWN · sponsor: **Centre Oscar Lambret**

## Conditions studied

- Breast Cancer
- Leptomeningeal Metastasis

## Interventions

- **PROCEDURE:** Cerebrospinal fluid and blood sample collection at the initial diagnostic assessment
- **PROCEDURE:** Cerebrospinal fluid and blood sample collection if conclusions of initial diagnostic assessment are "Lack of evidence" according to EANO-ESMO classification
- **PROCEDURE:** Cerebrospinal fluid and blood sample collection if conclusions of initial diagnostic assessment are "confirmed", "probable" or "possible", leading to leptomeningeal metastase specific treatment

## Key facts

- **NCT ID:** NCT03974204
- **Lead sponsor:** Centre Oscar Lambret
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** WITHDRAWN
- **Start date:** 2019-07
- **Primary completion:** 2022-10
- **Final completion:** 2023-10
- **Target enrollment:** 0 (ACTUAL)
- **Why stopped:** Modification of the care habits. We believe today that we are no longer able to carry out this study as initially described.
- **Last updated:** 2025-09-26


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03974204

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03974204, "Analyses of Exosomes in the Cerebrospinal Fluid for Breast Cancer Patients With Suspicion of Leptomeningeal Metastasis.". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT03974204. Licensed CC0.

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