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Evaluation of NETs in Patients With Solid Cancers Associated With a High Risk of Venous Thromboembolic Events (Flownet)

6. november 2020 oppdatert av: Assistance Publique - Hôpitaux de Paris

Evaluation of Neutrophil Extracellular Traps (NETs) by Flow Cytometry in Patients With Solid Cancers Associated With a High Risk of Venous Thromboembolic Events

Venous Thromboembolic Events (ETVs) are the second leading cause of death (9.2% of causes of death) in cancer patients after tumor progression (1). Indeed, cancer is associated with a 4 to 7-fold risk of ETV during chemotherapy (2). This complication is observed in 20% of cancer patients (3), and is sometimes an inaugural manifestation of cancer. This risk is particularly increased during the first 3 months after cancer diagnosis (4).

A biomarker correlated with the occurrence of ETVs would make it possible to target patients at high risk of thrombosis who could benefit from primary thromboprophylaxis, thus avoiding the complications, particularly haemorrhagic, and the additional costs associated with the long-term diagnostic and therapeutic management of ETVs. The investigator has implemented in the laboratory an innovative approach to the detection and quantification of circulating NETs by flow cytometry (FCM) allowing the routine determination of NETs. Therefore the investigator propose to assess NETs by CMF in a cohort of cancer patients with a very high risk of ETVs (pancreatic cancer, gastric cancer and colon cancer).

Studieoversikt

Detaljert beskrivelse

The NETs will be detected and quantified by CMF on the remaining EDTA tube collected to perform the blood count (NFS), using the method in place in the laboratory, adapted from the method initially described by Gavillet et al. The analyses will be carried out on a Fortessa LSR cytometer (Becton Dickinson), the antibodies used are specific to NET components: citrullinated H3 anti-histone in indirect labelling coupled APC, PE myeloperoxidase and Hoescht 34580 as DNA marker. The level will be measured in NETs/µL of whole blood as a function of the white blood cell count (Sysmex XN-3000). In parallel, other parameters associated with ETV risk will be evaluated: NFS on Sysmex-XN PLC, D-dimers, FVIII and MP. The assays of PM, D-dimers and FVIII will be performed specifically as part of the project, the other parameters will be measured as part of routine patient management and will not result in any additional constraints or costs. Biomarker assays will be performed at the time of cancer diagnosis on the EDTA and citrate tubes collected for NFS and TP/TCA respectively as part of routine care.

Studietype

Observasjonsmessig

Registrering (Forventet)

250

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

    • Haut De Seine
      • Boulogne-Billancourt, Haut De Seine, Frankrike, 92100
        • Rekruttering
        • Ambroise Paré Hospital
        • Ta kontakt med:

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

N/A

Kjønn som er kvalifisert for studier

Alle

Prøvetakingsmetode

Sannsynlighetsprøve

Studiepopulasjon

People with pancreatic, gastric or colorectal cancer at high risk of ETV, on the first line of treatment or relapsing after a period of complete remission.

Beskrivelse

Inclusion Criteria:

  • Male or Female over 18 years of age (≥18),
  • Patient with pancreatic, gastric or colorectal cancer,
  • Patient with a high risk of ETV,
  • Patient on the first line of treatment or relapsing after a period of complete remission,
  • Patient affiliated to a social security system or CMU.

Exclusion Criteria:

  • Patient who has had an ETV in the 3 months prior to inclusion,
  • Patient with a life expectancy of less than 3 months,
  • Patient with an anticoagulation placement,
  • Known pregnant or breastfeeding woman,
  • Patient under guardianship or curatorship.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Show that the NETs rate is higher at diagnosis in solid cancer patients with ETV within 4 months of diagnosis compared to patients without ETV
Tidsramme: 16 months
At the end of the study, after a minimum clinical follow-up of 4 months, the frequency of ETVs will be correlated to the NET rate measured in univariate and multivariate analysis (including also the following thrombotic risk factors: neutrophil levels, platelet levels, D-dimers, factor VIII, procoagulant activity of PM and body mass index).
16 months

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Determine a threshold of NETs that optimizes management based on the consequences of classification errors through decision analysis
Tidsramme: 16 months
The choice of an optimal threshold of NETs (sensitivity, specificity, likelihood ratio) will be determined by decision analysis using a decision tree combining probabilities of events and costs associated with fair (true positive, true negative) and erroneous (false positive, false negative) decisions.
16 months
Explore the possibility of a prognostic VTE score integrating the NET rate and other clinical and biological parameters measured at the time of cancer diagnosis
Tidsramme: 16 months
The choice of an optimal threshold of NETs (sensitivity, specificity, likelihood ratio) will be determined by decision analysis using a decision tree combining probabilities of events and costs associated with fair (true positive, true negative) and erroneous (false positive, false negative) decisions.
16 months

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Etterforskere

  • Hovedetterforsker: Valérie BARDET, PhD, hematology immunology transfusion Service, Ambroise Pare hospital

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

1. juli 2019

Primær fullføring (Forventet)

1. desember 2020

Studiet fullført (Forventet)

1. desember 2020

Datoer for studieregistrering

Først innsendt

2. mars 2020

Først innsendt som oppfylte QC-kriteriene

2. mars 2020

Først lagt ut (Faktiske)

4. mars 2020

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

10. november 2020

Siste oppdatering sendt inn som oppfylte QC-kriteriene

6. november 2020

Sist bekreftet

1. september 2020

Mer informasjon

Begreper knyttet til denne studien

Andre studie-ID-numre

  • APHP190640

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

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