Rheumatoid ArthritisNCT01096069
Complement Regulatory Proteins Expression and Clinical Response in Rheumatoid Arthritis (RA) Patients Treated With Rituximab
An observational study of Rheumatoid Arthritis, run by Hospital de Clinicas de Porto Alegre.
Trial summary
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. Read more about this study
- Who is it for?
- Ages 18 to 70 years
- Conditions the study is for
- Rheumatoid Arthritis
- How many people
- 10 participants
- Where
- No sites listed yet
- Study dates
- Jun 2010to Dec 2011
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 70 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: 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.
Who may be able to join
- 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).
Who cannot join
- 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.
Trial locations and contacts
No sites are listed yet.
About this study
Official title: 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.
Read the detailed description
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.
- Conditions
- Rheumatoid Arthritis
- Keywords
- Rituximab, rheumatoid arthritis, CD55, CD59
- Medical subject headings
- Arthritis, Rheumatoid
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Rituximab | Rheumatoid arthritis patients undergoing treatment with rituximab. |
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted30 Mar 2010 (estimated)
- Study startJun 2010
- Primary completionDec 2010 (estimated)
- Study completionDec 2011 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Rheumatoid ArthritisStudies of the same condition, open and under way.
- More trials run by Hospital de Clinicas de Porto AlegreThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 10 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Hospital de Clinicas de Porto Alegre
- Sponsor type
- University, hospital or other
- Investigators
- Ricardo M Xavier, PhD, Study director, HCPA
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01096069
- Sponsor's protocol ID
- 09/585
- Status last verified
- Mar 2010
- First submitted
- 23 Feb 2010
- Last updated
- 30 Mar 2010
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 30 Mar 2010. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Expressão de Cregs e a Resposta clínica em Pacientes AR Tratada Com Rituximabe
- ClinicalTrials.gov ID
- NCT01096069
- Acronym / sponsor ID
- 09/585
- Conditions
- Rheumatoid Arthritis
- Keywords
- Rituximab, rheumatoid arthritis, CD55, CD59
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 10 participants (estimated)
- Lead sponsor
- Hospital de Clinicas de Porto AlegreUniversity, hospital or other
- Study start
- Jun 2010
- Primary completion
- Dec 2010 (estimated)
- Study completion
- Dec 2011 (estimated)
- First posted
- 30 Mar 2010 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Detailed description
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.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Rituximab | – | –Rheumatoid arthritis patients undergoing treatment with rituximab. |
Who may qualify
- Ages
- 18 to 70 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- 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.
Key inclusion criteria (6 listed)
- 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.
Key exclusion criteria (7 listed)
- 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.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Not reported in the source record.
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 30 Mar 2010.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Ricardo M Xavier, PhD study director
HCPA
Questions about this trial
What is this clinical trial studying?
An observational study of Rheumatoid Arthritis, run by Hospital de Clinicas de Porto Alegre.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 30 Mar 2010. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Ricardo M Xavier, PhD (3359-8315, rmxavier@hcpa.ufrgs.br), or a site near the patient. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 30 Mar 2010.