mRNA Expression as a Biomarker of Omalizumab Response

April 24, 2012 updated by: Instituto de Investigação em Imunologia

mRNA Expression as a Biomarker of Xolair (Omalizumab) Response

Objectives: 1. Determine if mRNA expression could be use as a biomarker to predict and monitor the response to omalizumab in patients with difficult control asthma 2. Identify which genes are switched on and which are switched off by using Omalizumab.

Methods: This study is an open label clinical trial, with six patients. The patients will receive Omalizumab according to their age and weight (maximum dose: 375 mg every 15 days) for 4 months. There will be a run-in period of one month, when allergic asthma diagnosis will be confirmed and treatment will be optimized. Patients will be evaluated and will have blood sample collected on 3 occasions: in the beginning, 2 months after baseline and at the end of the study. Blood samples will always be collected one week after the last omalizumab dose. Primary outcome will be RNA expression of 20 genes measured by real time-PCR (high-affinity IgE receptor, IL-4, IL-5, IL-13, gama-IFN, quimokines, Fc epsilon, between others). Secondary outcomes will be ACT, ACQ and spirometry.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Study rational: There is not a biomarker that can predict which patients will respond to Omalizumab and those who will not respond. Nowadays, the monitoring of therapeutic response to Omalizumab is based on clinical and spirometric data.

On the other hand, when a medication is administered, it has its main expected effect, but also acts on other targets with various direct and indirect effects. We do not know all the genes that are switched on and those that are switched off by the use of Omalizumab. For example, anti-IgE has been developed to block serum total IgE and thereby improve control of allergic asthma. However, the studies noted that Omalizumab also reduces the receptors FcepsilonRI, which may have implications for the treatment of autoimmune urticaria.

Study Type

Interventional

Enrollment (Anticipated)

6

Phase

  • Phase 4

Contacts and Locations

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

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

12 years to 60 years (Child, Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • over 12 years
  • severe asthma not controlled despite medication
  • IgE between 70 and 1300 IU/ml and evidence of allergy clinical history and/or skin test or blood.

Exclusion Criteria:

  • previous use of omalizumab
  • smoke history

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

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Omalizumab
All patients will receive omalizumab.
Biological: Omalizumab
The patients will receive Omalizumab according to their age and weight for 4 months.
Other Names:
  • Xolair
  • Anti-IgE

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change of mRNA expression in leukocytes (real time-PCR)
Time Frame: At the end of the study (4months after baseline)
Patients will be evaluated and will have blood sample collected on 3 occasions: in the beginning, 2 months after baseline and at the end of the study. Blood samples will always be collected one week after the last omalizumab dose. Primary outcome will be RNA expression of 30 genes measured by real time-PCR.
At the end of the study (4months after baseline)

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in the scores of questionnaires of asthma control
Time Frame: At the end of the study (4 months after baseline)
Patients will be evaluated on 3 occasions: in the beginning, 2 months after baseline and at the end of the study. Secondary outcomes will be the scores of Asthma Control Test and Asthma Control Questionnaire.
At the end of the study (4 months after baseline)

Collaborators and Investigators

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

Sponsor

Instituto de Investigação em Imunologia

Investigators

  • Principal Investigator: Pedro Giavina-Bianchi, MD,PhD, University of Sao Paulo

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

June 1, 2012

Primary Completion (Anticipated)

December 1, 2012

Study Completion (Anticipated)

December 1, 2012

Study Registration Dates

First Submitted

April 20, 2012

First Submitted That Met QC Criteria

April 24, 2012

First Posted (Estimate)

April 25, 2012

Study Record Updates

Last Update Posted (Estimate)

April 25, 2012

Last Update Submitted That Met QC Criteria

April 24, 2012

Last Verified

April 1, 2012

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CIGE025ABR03T

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.

Clinical Trials on Asthma

Clinical Trials on Omalizumab

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Morocco

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe