- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT03597685
Pesticide Associated Lymphomas: Expression of Treatment Resistance Genes (ProLyPhy-GEP)
ProLyPhy-GEP : Pesticide Associated Lymphomas: Expression of Treatment Resistance Genes
Lymphomagenesis is partially known, and some risk factor are identified like those inducing immune deficiencies: chronic exposure to HIV, immune suppressor therapies or commun variable immunodeficiency. Parts of the mechanisms leading to NHL development after pesticide exposure are the disruption of immune surveillance against cancer cell. Pro-oncogenic action of metabolites is the most important mechanisms of action for pesticides. Thus, pesticides are metabolized in pro-oxidant compounds disturbing the redox homeostasis in the haematopoietic and immune cells precursors, promoting proliferation and survival, and inducing DNA breaks. Some of them induce direct DNA breaks and non-conform reparation, leading to activation of oncogenes; and other induces transcription factors for oncogenic signalling pathways. DNA reparation and adaptation to a higher ROS level are associated with resistance against cytotoxic chemotherapy treatment with induction of detoxification mechanism by tumour cells.
That DNA repair pathways, which are targeted by chemotherapy could also explain a part of chemo-resistance. It was therefore suggested that DLBCL dependence to specific DNA repair pathways could be targeted to hamper repair of intrinsic DNA damage occurring during B-lymphoma cells proliferation or to increase DNA damage induced by chemotherapy.
Studienübersicht
Status
Bedingungen
Detaillierte Beschreibung
Occupational exposure to pesticides is associated with higher incidence of non-Hodgkin lymphoma (NHL), including diffuse large B-cell lymphoma (DLBCL) The relative risk for NHL after occupational exposure to pesticide is 1.5 to 3, with little variation according to NHL subtypes. DLBCL is one of the most frequent subtypes of NHL and characterized by aggressive presentation. DLBCL is treated by chemotherapy based on anthracyclines combined with an anti-CD20 monoclonal antibody allowing complete response and long term remission in 65-70% of patients. The response rate to treatment and clinical outcome is depending of the DLBCL subtype. There are 3 of them depending of the cell of origin (germinal centre B cell or activated B cell), and the anatomical location (primary mediastinal) identified by molecular gene expression profile. The activated B cell subtype have a worse outcome.
Lymphomagenesis is partially known, and some risk factor are identified like those inducing immune deficiencies: chronic exposure to HIV, immune suppressor therapies or commun variable immunodeficiency. Parts of the mechanisms leading to NHL development after pesticide exposure are the disruption of immune surveillance against cancer cell. Pro-oncogenic action of metabolites is the most important mechanisms of action for pesticides. Thus, pesticides are metabolized in pro-oxidant compounds disturbing the redox homeostasis in the haematopoietic and immune cells precursors, promoting proliferation and survival, and inducing DNA breaks. Some of them induce direct DNA breaks and non-conform reparation, leading to activation of oncogenes; and other induces transcription factors for oncogenic signalling pathways. DNA reparation and adaptation to a higher ROS level are associated with resistance against cytotoxic chemotherapy treatment with induction of detoxification mechanism by tumour cells.
That DNA repair pathways, which are targeted by chemotherapy could also explain a part of chemo-resistance. It was therefore suggested that DLBCL dependence to specific DNA repair pathways could be targeted to hamper repair of intrinsic DNA damage occurring during B-lymphoma cells proliferation or to increase DNA damage induced by chemotherapy.
The investigators hypothesize that actions of pesticides on DNA and redox homeostasis are critical events during lymphomagenesis. We supposed that specific mechanisms of DNA repair and antioxidant defences induced by pesticides exposure are implicated in the chemo-resistance in DLBCL patients.
There might be a negative impact of professional exposure to pesticide on treatment response.
In this search, the investigators will explore a comprehensive view of both lymphomagenesis and adverse prognosis of pesticide-exposed DLBCL. The investigators plan to analyse the molecular profile of B-lymphoma cells from pesticide-exposed patients, to better understand biological mechanisms underlying lymphomagenesis as well as chemotherapy resistance
Studientyp
Einschreibung (Tatsächlich)
Kontakte und Standorte
Studienorte
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Montpellier, Frankreich, 34295
- UHMontpellier
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Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Probenahmeverfahren
Studienpopulation
Beschreibung
Inclusion Criteria:
Adults treated for diffuse large B-cell lymphoma:
- Diagnosed between 2010 and 2015
- Included in ProLyPhy search
- Having received R-CHOP immuno-chemotherapy
- Supported in health facilities in Languedoc-Rousillon
Exclusion criterion:
NA
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
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genes implicated in chemoresistance of diffuse large B-cell lymphoma
Zeitfenster: 1 day
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Use of excesses of the biopsy made as part of the care for the diagnostic of the lymphoma for identify genes implicated in chemoresistance of DLBCL
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1 day
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Mitarbeiter und Ermittler
Sponsor
Ermittler
- Studienleiter: Sylvain LAMURE, CCA, University Hospital, Montpellier
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
- RECHMPL18_0010
Plan für individuelle Teilnehmerdaten (IPD)
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Beschreibung des IPD-Plans
Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
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Klinische Studien zur Lymphoma Diffuse Large B-cell
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SWOG Cancer Research NetworkNational Cancer Institute (NCI); Genentech, Inc.RekrutierungDiffuses großzelliges B-Zell-Lymphom | Wiederkehrendes diffuses großzelliges B-Zell-Lymphom | Refraktäres diffuses großzelliges B-Zell-Lymphom | Primäres mediastinales (thymisches) großes B-Zell-Lymphom | Follikuläres Lymphom Grad 3b | Transformierte follikuläre Lymphe zu Diff Large B-Zell-Lymphom und andere BedingungenVereinigte Staaten
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National Cancer Institute (NCI)AbgeschlossenAIDS-bedingtes peripheres/systemisches Lymphom | AIDS-assoziiertes diffuses großzelliges Lymphom | AIDS-bedingtes diffuses gemischtzelliges Lymphom | AIDS-bedingtes kleines Noncleaved-Cell-LymphomVereinigte Staaten
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National Cancer Institute (NCI)ZurückgezogenDiffuses, großzelliges B-Zell-Lymphom | Lymphom, diffus großzellig | Lymphom, diffuse großzellige B-Zellen | Großzelliges Lymphom, diffus
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National Cancer Institute (NCI)AbgeschlossenAIDS-bedingtes peripheres/systemisches Lymphom | AIDS-assoziiertes diffuses großzelliges Lymphom | AIDS-bedingtes immunoblastisches großzelliges Lymphom | AIDS-bedingtes kleines Noncleaved-Cell-LymphomVereinigte Staaten
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UNC Lineberger Comprehensive Cancer CenterCephalonAbgeschlossenLymphom | Diffuses großzelliges B-Zell-Lymphom | Lymphom, diffus großzellig | Diffuses großzelliges LymphomVereinigte Staaten
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CureTech LtdAbgeschlossenPrimäres mediastinales großzelliges B-Zell-Lymphom | Lymphom, großzellig, diffus | Lymphom, gemischtzellig, diffusVereinigte Staaten, Israel, Indien
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Dipenkumar ModiGenmabRekrutierungRückfall Krebs | Refraktärer Krebs | Großzelliges Lymphom, diffusVereinigte Staaten
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Janssen Research & Development, LLCRekrutierungLymphom, Non-Hodgkin | Rezidiviertes B-Zell-NHL | Feuerfestes B-Cell NHLTruthahn
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Neumedicines Inc.UnbekanntLymphom, großzellig, diffus (DLBCL)
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Nantes University HospitalAbgeschlossenLymphom, großzellig, diffusFrankreich