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Effect of Omalizumab (Xolair) on Basophils in Patients With Chronic Idiopathic Urticaria

This study is ongoing, but not recruiting participants.
Genentech, Inc.
Information provided by (Responsible Party):
University of Colorado, Denver Identifier:
First received: October 3, 2012
Last updated: August 19, 2016
Last verified: August 2016
This study looks at changes in cell proteins in people with chronic hives treated with omalizumab.

Condition Intervention Phase
Chronic Urticaria
Drug: Omalizumab
Phase 4

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Effect of Omalizumab (Xolair) on the Basophil Proteome in Patients With Chronic Idiopathic Urticaria

Resource links provided by NLM:

Further study details as provided by University of Colorado, Denver:

Primary Outcome Measures:
  • Change in the basophil proteome [ Time Frame: Baseline through week 13 ]
    In patients with chronic urticaria who respond clinically to omalizumab, the proteome of blood basophils will be measured at baseline (pre-treatment) and at weeks 6 and 13 (post-treatment).

Secondary Outcome Measures:
  • Change in basophil proteome in responders to omalizumab compared to non-responders to omalizumab [ Time Frame: Baseline through week 13 ]

Estimated Enrollment: 12
Study Start Date: April 2013
Estimated Study Completion Date: April 2017
Primary Completion Date: April 2016 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Omalizumab
Patients will receive omalizumab 300mg subcutaneously every 4 weeks for 12 weeks at the study center.
Drug: Omalizumab
Patients will receive omalizumab 300mg subcutaneously every 4 weeks for 12 weeks at the study center.
Other Name: Xolair

Detailed Description:
The purpose of this study is to evaluate for changes in the proteins produced in white blood cells (basophils) in patients with chronic hives who are treated with and respond to omalizumab.

Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Chronic urticaria (hives) for more than 6 weeks.
  • No improvement with standard doses of antihistamines (loratadine 10 mg daily, desloratadine 5 mg daily, fexofenadine 180 mg daily, cetirizine 10 mg daily, or levocetirizine 5 mg daily)

Exclusion Criteria:

  • Taken any oral steroids for 1 month prior to beginning the study.
  • Taken any other immunomodulatory drugs (sulfasalazine, hydroxychloroquine, cyclosporine, methotrexate) for 1 month prior to beginning the study.
  • Physical urticaria as a primary diagnosis.
  • Known allergic precipitant of urticaria such as foods.
  • Urticarial Vasculitis.
  • Anemia.
  • Asthma.
  • Serum Immunoglobulin E (IgE) >700 IU/ml.
  • Women of childbearing potential not using contraception method(s), as well as women who are pregnant and/or breastfeeding.
  • Known sensitivity to omalizumab or this class of drug.
  • Use of any other investigational agent in the last 1 month.
  • Untreated intercurrent illness.
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Please refer to this study by its identifier: NCT01701583

United States, Colorado
University of Colorado Hospital
Denver, Colorado, United States, 80045
Sponsors and Collaborators
University of Colorado, Denver
Genentech, Inc.
Principal Investigator: Stephen Dreskin, M.D., Ph.D. University of Colorado, Denver
  More Information

Responsible Party: University of Colorado, Denver Identifier: NCT01701583     History of Changes
Other Study ID Numbers: 12-0780
Study First Received: October 3, 2012
Last Updated: August 19, 2016

Keywords provided by University of Colorado, Denver:
Chronic Idiopathic Urticaria
Chronic Hives

Additional relevant MeSH terms:
Skin Diseases, Vascular
Skin Diseases
Hypersensitivity, Immediate
Immune System Diseases
Anti-Allergic Agents
Anti-Asthmatic Agents
Respiratory System Agents processed this record on May 22, 2017