mRNA Expression as a Biomarker of Omalizumab Response
|ClinicalTrials.gov Identifier: NCT01584687|
Recruitment Status : Unknown
Verified April 2012 by Instituto de Investigação em Imunologia.
Recruitment status was: Not yet recruiting
First Posted : April 25, 2012
Last Update Posted : April 25, 2012
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.
|Condition or disease||Intervention/treatment||Phase|
|Asthma||Biological: Omalizumab||Phase 4|
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 (Clinical Trial)|
|Estimated Enrollment :||6 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Official Title:||mRNA Expression as a Biomarker of Xolair (Omalizumab) Response|
|Study Start Date :||June 2012|
|Estimated Primary Completion Date :||December 2012|
|Estimated Study Completion Date :||December 2012|
All patients will receive omalizumab.
The patients will receive Omalizumab according to their age and weight for 4 months.
- 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.
- 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.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01584687
|Contact: Pedro Giavina-Bianchi, PhD,MD||(5511) firstname.lastname@example.org|
|Contact: Marcelo V Aun, MD||(5511) email@example.com|
|Principal Investigator:||Pedro Giavina-Bianchi, MD,PhD||University of São Paulo|