Rituximab in Refractory Primary Membranous Nephropathy

November 8, 2019 updated by: Safak Mirioglu, Istanbul University

Efficacy and Safety of Rituximab in Patients With Refractory Primary Membranous Nephropathy

Primary membranous nephropathy (PMN), an autoimmune disease mostly associated with anti-phospholipase-A2-receptor (PLA2R) antibodies, is one of the most common causes of nephrotic syndrome in adults. In 30% to 40% of all cases, patients with PMN undergo spontaneous remission with conservative approaches. Corticosteroids, alkylating agents and calcineurin inhibitors are recommended treatment options in persistent disease activity despite supportive therapies. Nevertheless, patients with refractory disease constitute an important clinical aspect of PMN, and uncontrolled proteinuria may culminate in rapid progression to end-stage renal disease. In recent years, several studies demonstrated the efficacy of rituximab as a treatment option in patients with refractory PMN; however, data regarding daily clinical practice of this agent is still needed. Therefore, we conducted a study using our registry data to evaluate the efficacy and safety of rituximab in patients with refractory PMN.

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

36

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Turkey
      • Istanbul, Turkey
        • Istanbul University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patients with primary membranous nephropathy who were treated using rituximab following resistance to at least one set of prior therapies including corticosteroids, alkylating agents or calcineurin inhibitors.

Description

Inclusion Criteria:

  • Having biopsy-proven primary membranous nephropathy.
  • Showing resistance to at least one set of prior therapies including corticosteroids, alkylating agents or calcineurin inhibitors.
  • Having a history of rituximab use (375 mg/m2/wk for 2-4 weeks) following resistance aforementioned agents.

Exclusion Criteria:

  • Not providing or withdrawing consent.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Only
  • Time Perspectives: Retrospective

Cohorts and Interventions

Group / Cohort
Study Group
Patients with primary membranous nephropathy who were treated using rituximab (375 mg/m2/wk for 1-4 weeks) following resistance to at least one set of prior therapies including corticosteroids, alkylating agents or calcineurin inhibitors.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Complete Remission
Time Frame: 6 months
Proteinuria <0.3 g/day, confirmed by two values at least 1 week apart, accompanied by a normal serum albumin concentration, and a normal serum creatinine.
6 months
Partial Remission
Time Frame: 6 months
Proteinuria <3.5 g/day and a 50% or greater reduction from peak values, confirmed by two values at least 1 week apart, accompanied by an improvement or normalization of the serum albumin concentration and stable serum creatinine.
6 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Istanbul University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

November 1, 2018

Primary Completion (Actual)

May 31, 2019

Study Completion (Actual)

September 30, 2019

Study Registration Dates

First Submitted

March 16, 2019

First Submitted That Met QC Criteria

March 17, 2019

First Posted (Actual)

March 19, 2019

Study Record Updates

Last Update Posted (Actual)

November 13, 2019

Last Update Submitted That Met QC Criteria

November 8, 2019

Last Verified

November 1, 2019

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2018/1509

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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