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Spots Global Cancer Trial Database for Detection of CSF Next Generation Sequencing in the Application of Brain Metastases From Lung Adenocarcinoma or Meningeal Metastasis

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Trial Identification

Brief Title: Detection of CSF Next Generation Sequencing in the Application of Brain Metastases From Lung Adenocarcinoma or Meningeal Metastasis

Official Title: Detection of CSF Next Generation Sequencing in the Application of Brain Metastases From Lung Adenocarcinoma or Meningeal Metastasis

Study ID: NCT03029065

Conditions

Recruitment

Interventions

Study Description

Brief Summary: This study aimed to detect cell free DNA (cfDNA) in the cerebrospinal fluid and plasma, and to determine whether cfDNA can be used for concomitant diagnosis to improve the treatment efficacy and prognosis of patients with brain (meningeal) metastasis by monitoring tumor-related genetic mutations in cfDNA in the plasma and cerebrospinal fluid.

Detailed Description: This study planned to enroll 50 patients with lung cancer diagnosed with brain (meningeal) metastases, and all cases were slated to receive radiotherapy and targeted therapy. Patients' clinical data were collected (including but not limited to: age at diagnosis with brain (meningeal) metastases, KPS score, smoking history, stage of disease at diagnosis, time to progress to brain metastases, number of brain metastases, extracranial metastases (ECM), and systemic disease at the time of brain metastases. Anticoagulated whole blood and anticoagulated cerebrospinal fluid were collected before local treatment (samples of primary cancer tissue and metastatic carcinoma of some patients were preserved) and at 7 days, 1 month, 3 months, as well as 6 months after the treatment (time of sample retention was to be determined, Figure 2). DNA was extracted from tumor tissues, genomic DNA was extracted from leukocytes, and cfDNA was extracted from plasma and cerebrospinal fluid, for complete quantitative detection of DNA, DNA library construction, as well as targeted capture sequencing. Tumor-related genes were analyzed, and changes in the tumor burden during the treatment process were evaluated. The clinical significance of cfDNA in the plasma and cerebrospinal fluid for treatment efficacy and prognosis was evaluated, and compared with that of clinical indicators of treatment efficacy. This study involved two stages. The first stage was a pre-experiment: samples were retained from 3-5 cases, and mutations in tumor-related genes in the cfDNA in plasma and cerebrospinal fluid were compared. The investigators analyzed, combined with clinical indicators, whether mutations of cfDNA in plasma accord with that of the cerebrospinal fluid and whether mutations of cfDNA in cerebrospinal can reflect the mutational status of tumor cells. The second phase was conducted by expanding the number of cases, based on the first stage.

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

Contact Details

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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