Complement Regulatory Proteins Expression and Clinical Response in Rheumatoid Arthritis (RA) Patients Treated With Rituximab
29. marts 2010 opdateret af: Hospital de Clinicas de Porto Alegre
Expressão de Cregs e a Resposta clínica em Pacientes AR Tratada Com Rituximabe
There is a correlation between the CD55, CD59, CD35 and CD46 expression on B lymphocytes of patients before and after treatment with rituximab and the level of depletion and repopulation time for these cells.
The theoretical rationale of the study assumes that the correlation, if any, will be a negative correlation.
However, the hypothesis of positive correlation (two-tailed test) will also be tested.
Studieoversigt
Status
Ukendt
Betingelser
Detaljeret beskrivelse
Rituximab, an anti-CD20 monoclonal antibody, is a new alternative treatment for patients with severe immune diseases and resistance to conventional treatment.
One of the mechanisms of action of this drug is the complement-mediated lysis.
Most RA patients respond well to rituximab treatment, however, some are refractory and mechanism of this non-response is still unclear.
The role of CD55 and CD59 protein and its overexpression as a mechanism of resistance to rituximab treatment in lymphoma patients have been investigated.
However, there has not been studied a correlation between the intensity of expression of these regulatory molecules on B cells of RA patients and resistance to treatment with Rituximab.
Undersøgelsestype
Observationel
Tilmelding (Forventet)
10
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
18 år til 70 år (Voksen, Ældre voksen)
Tager imod sunde frivillige
Ingen
Køn, der er berettiget til at studere
Alle
Prøveudtagningsmetode
Sandsynlighedsprøve
Studiebefolkning
Patients diagnosed with RA and clinical indication for treatment with rituximab and who have obtained access to medication (private purchase, delivery by a private health plan, lawsuit or donation by the laboratory Roche) will be invited to participate in the study during the physician appointment.
Beskrivelse
Inclusion Criteria:
- Patients of both gender, aged greater than or equal to 18 years; and lower than 70 years.
- Patients diagnosed with RA for at least 6 months according to the criteria of the American College of Rheumatology (ACR) in 1987 for classification of AR.
- Patients with a medical indication for therapy with rituximab, with prescription of this therapy for the first time and have not yet received the first dose.
- DAS28 score greater than or equal to 3.2.
- Use of adequate contraception, as judged from the attending physician.
- Desire to participate voluntarily, the ability to understand the protocol, documented by signing the consent form (attached).
Exclusion Criteria:
- overlapping rheumatic disease, autoimmune lymphoproliferative and neoplastic.
- active infection, patients with the use of cytotoxic drugs, presence of positive serology for HCV, HBV and HIV, active or latent tuberculosis.
- allergy or hypersensitivity to rituximab.
- pregnant woman or performing breastfeeding.
- participating in another clinical study with intervention.
- with functional class IV defined based on the criteria of Steinbrocker functional classification for RA.
- prior therapy with Rituximab.
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
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Rituximab
Rheumatoid arthritis patients undergoing treatment with rituximab.
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Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Efterforskere
- Studieleder: Ricardo M Xavier, PhD, HCPA
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart
1. juni 2010
Primær færdiggørelse (Forventet)
1. december 2010
Studieafslutning (Forventet)
1. december 2011
Datoer for studieregistrering
Først indsendt
23. februar 2010
Først indsendt, der opfyldte QC-kriterier
29. marts 2010
Først opslået (Skøn)
30. marts 2010
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
30. marts 2010
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
29. marts 2010
Sidst verificeret
1. marts 2010
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 09/585
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .