The Effect of Omalizumab on Responses to Cat Allergen Challenge
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ClinicalTrials.gov Identifier: NCT00604786 |
Recruitment Status :
Completed
First Posted : January 30, 2008
Results First Posted : April 4, 2017
Last Update Posted : May 10, 2017
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Allergic Rhinitis | Drug: omalizumab Drug: placebo | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 18 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Double (Participant, Investigator) |
Primary Purpose: | Basic Science |
Official Title: | Pilot Study of the Effect of Omalizumab on Basophil and Mast Responses to Intranasal Cat Allergen Challenge |
Study Start Date : | July 2007 |
Actual Primary Completion Date : | January 2009 |
Actual Study Completion Date : | January 2009 |

Arm | Intervention/treatment |
---|---|
Experimental: Omalizumab subcutaneous
This active are will receive treatment with omalizumab subcutaneously at the dose currently FDA-approved for the treatment of allergic asthma. There is a weight and IgE based dosing table in the and subjects receive therapy by subcutaneous injection every 2 or 4 weeks. The lower range of dosing is 150 mg q 4weeks ( one injection) with the upper range 375 mg every 2 weeks ( three injections). The dosing is based on IgE levels and IGE and is given by subcutaneous injection every 2 to 4 weeks |
Drug: omalizumab
Dosing is based on IgE level and weight given every 2 or 4 weeks
Other Name: Xolair |
Placebo Comparator: Placebo Subcutaneous
This placebo arm will receive identical treatment with placebo injections subcutaneously at the dose currently FDA-approved for the treatment of allergic asthma. There is a weight and IgE based dosing table in the and subjects receive therapy by subcutaneous injection every 2 or 4 weeks. The lower range of dosing is 150 mg q 4weeks ( one injection) with the upper range 375 mg every 2 weeks ( three injections). The dosing is based on IgE levels and IGE and is given by subcutaneous injection every 2 to 4 weeks. |
Drug: placebo
Dosing is based on IgE level and weight given every 2 or 4 weeks |
- Change in Basophil Surface IgE [ Time Frame: Change from baseline to 3.5 months ]
Flow cytometry in mean fluorescence units.
100%*[(3.5 month value minus baseline value)/baseline value]

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Ages Eligible for Study: | 18 Years to 50 Years (Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Ability to understand and provide informed consent
- Male or Female (non-pregnant), age 18-50
- Females must be: Surgically sterile (hysterectomy, bilateral oophorectomy, bilateral tubal ligation), OR postmenopausal (at least 1 year since last menses), OR using a medically acceptable form of birth control throughout the duration of the study.
- Clinical history of seasonal or perennial allergic rhinitis for at least two years, with or without mild persistent asthma
- Positive puncture skin test greater than or equal to 5 mm diluent control
- Positive Immunocap to Fel d 1 > 0.35 kallikrein unit/L
- Positive intranasal cat allergen challenge as defined by > 5 sneezes or a tripling of measured nasal lavage mediators
- In vitro assay of basophil responsiveness to cat allergen with greater than 20% histamine release
- The use of antihistamines, cromolyn, leukotriene modifiers and other non-steroid (astelin and topical decongestants), nasal medications will be allowed, but they will be withheld for 5 days prior to each nasal allergen provocation session. Inhaled corticosteroids for mild asthma will be permissible.
- No known contraindications to therapy with omalizumab
Exclusion Criteria:
- Asthma with forced expiratory volume at one second (FEV1) < 80%, moderate to severe asthma classification per National Asthma Education and Prevention Program Expert Panel (NAEP) Standards (1997 National Asthma Education and Prevention Program Expert Panel Report II guidelines)
- Serum IgE levels less than 30 IU/mL or greater than 700 IU/mL at the time of enrollment will be excluded
- Unexplained elevation of erythrocyte sedimentation rate (ESR), hematocrit < 32%, white blood cell (WBC) count 2400/microliter lower limit of normal, platelet < 75000/microliter, creatinine > 141.4 micromolar/L, or aspartate aminotransferase (AST) > 100 IU/L
- Body weight less than 30 kg or greater than 150 kg will be excluded.
- Plans to become pregnant or breastfeed will be excluded from the study
- A perforated nasal septum, structural nasal defect, large nasal polyps causing obstruction, evidence of acute or chronic sinusitis
- A life expectancy less than 6 months
- A terminal illness as determined by the investigator
- A history of malignancy, anaphylaxis or bleeding disorder are also exclusion illnesses.
- Mental illness or history of drug or alcohol abuse that, in the opinion of the investigator, would interfere with the participant's ability to comply with study requirements.
- Inability or unwillingness of a participant to give written informed consent or comply with study protocol
- Use of any investigational drugs within 8 weeks of participation
- Contraindications to omalizumab include patients with a previous hypersensitivity to omalizumab
- Recent recipient of any licensed or investigational live attenuated vaccine(s) within two months of study initiation such as flu mist.
- Prior use of omalizumab
- Frequent sinusitis (>2/ documented episodes per year) or active sinusitis within 2 weeks of enrollment
- Use of immunotherapy within the last 5 years

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00604786
United States, Maryland | |
Johns Hopkins Asthma and Allergy Center | |
Baltimore, Maryland, United States, 21224 |
Principal Investigator: | Sarbjit S Saini, M.D. | Johns Hopkins University |
Publications:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | Johns Hopkins University |
ClinicalTrials.gov Identifier: | NCT00604786 |
Other Study ID Numbers: |
NA_00007520 U19AI070345 ( U.S. NIH Grant/Contract ) |
First Posted: | January 30, 2008 Key Record Dates |
Results First Posted: | April 4, 2017 |
Last Update Posted: | May 10, 2017 |
Last Verified: | April 2017 |
Basophils Mast Cells IgE IgE receptors omalizumab |
Rhinitis Rhinitis, Allergic Respiratory Tract Infections Infections Nose Diseases Respiratory Tract Diseases Otorhinolaryngologic Diseases Respiratory Hypersensitivity |
Hypersensitivity, Immediate Hypersensitivity Immune System Diseases Omalizumab Anti-Allergic Agents Anti-Asthmatic Agents Respiratory System Agents |