A Prospective, Randomized, Double-Blind Study of the Efficacy of Omalizumab (Xolair) in Atopic Asthmatics With Good Lung Capacity Who Remain Difficult to Treat (EXACT)

NCT ID: NCT00096954

Last Updated: 2017-06-14

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE4
• Total Enrollment: 333 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2006-02-28
• Study Completion Date: 2010-09-30

Brief Summary

This was a multicenter, parallel-group, double-blind, randomized, placebo-controlled study that enrolled 333 subjects. These subjects were 12-75 years old with atopic asthma, had elevated serum total Immunoglobulin E (IgE), had a baseline forced expiratory volume in 1 second (FEV1) ≥ 80% predicted, and were on inhaled corticosteroids with or without other controller asthma medications (e.g., long-acting β2-agonists [LABAs], leukotriene receptor antagonist [LTRA], or immunotherapy).

Conditions

Asthma

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: DOUBLE

Study Groups

Omalizumab

Omalizumab (Xolair) administered in this study was either a minimum of 0.008 mg/kg/IgE \[IU/mL\] every 2 weeks or a minimum of 0.016 mg/kg/IgE \[IU/mL\] every 4 weeks.

Group Type: EXPERIMENTAL

omalizumab (Xolair)

Intervention Type: DRUG

Omalizumab (Xolair) was administered subcutaneously every 2 or 4 weeks. The dose (mg) and dosing frequency were determined by serum total IgE level (IU/mL), measured before the start of treatment, and body weight (kg). Assignment of the study drug dose was determined by using the study drug-dosing table. Doses of \> 150 mg were divided among more than one injection site to limit injections to no more than 150 mg per site.

Placebo

Placebo administered in this study was either a minimum of 0.008 mg/kg/IgE \[IU/mL\] every 2 weeks or a minimum of 0.016 mg/kg/IgE \[IU/mL\] every 4 weeks.

Group Type: PLACEBO_COMPARATOR

placebo

Intervention Type: DRUG

The dose of placebo consisting of sucrose, L-histidine, L-histidine hydrochloride monohydrate, and polysorbate 20 was administered by subcutaneous injection every 2 or 4 weeks.

Interventions

omalizumab (Xolair)

Omalizumab (Xolair) was administered subcutaneously every 2 or 4 weeks. The dose (mg) and dosing frequency were determined by serum total IgE level (IU/mL), measured before the start of treatment, and body weight (kg). Assignment of the study drug dose was determined by using the study drug-dosing table. Doses of \> 150 mg were divided among more than one injection site to limit injections to no more than 150 mg per site.

Intervention Type: DRUG

placebo

The dose of placebo consisting of sucrose, L-histidine, L-histidine hydrochloride monohydrate, and polysorbate 20 was administered by subcutaneous injection every 2 or 4 weeks.

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Have a documented history of asthma as well as evidence of ≥ 12% reversibility of FEV1. Evidence of ≥ 12% reversibility of FEV1 may be obtained by any one of the following measures: 1) Documentation of ≥ 12% reversibility of FEV1 after albuterol administration at any time during the preceding 24 months; 2) Documentation of ≥ 12% improvement in FEV1 with two separate measurements obtained within a 4-week period surrounding an asthma exacerbation during the preceding 24 months; 3) Demonstration of ≥ 12%reversibility of FEV1 after albuterol administration at the time of screening
• Have baseline FEV1 ≥ 80% predicted normal value prior to randomization
• Have a positive skin test (diameter of wheal ≥ 3 mm vs. control) or in vitro radioallergosorbent test (RAST(R)) or ImmunoCap(R) to one relevant perennial aeroallergen such as cat or house dust mites documented within the previous year
• Be receiving at least an inhaled corticosteroid dosage of fluticasone dry powder inhaler (DPI) ≥ 200 ug/day or equivalent ex-valve dose during the 12 weeks prior to the screening visit
• During the 4-week run-in period prior to randomization, demonstrate evidence of inadequate asthma symptom control despite inhaled corticosteroids with or without other controller asthma medications (e.g., LABA, LTRA, immunotherapy). Inadequate asthma symptom control is defined as at least one of the following reported on the subject diary card during the 4-week run-in period: Daytime asthma symptoms as a score of ≥ 1 (scale of 0-4) on at least 20 of 28 days (missing data to be treated as a day with no symptoms) and a mean symptom score of ≥ 1.5 (mean will be calculated based on only data supplied; missing values will not be considered) or Nighttime awakening because of asthma symptoms (more than 4 times during the 4-week run-in period)
• Meet the study drug-dosing table eligibility criteria (serum baseline IgE level ≥ 30 to ≤ 1300 IU/mL and body weight ≥ 20 to ≤ 150 kg)
• If a female of childbearing potential, use an effective method of contraception (in the opinion of the investigator) to prevent pregnancy and agree to continue to practice an acceptable method of contraception for the duration of their participation in the study

Exclusion Criteria

• Have received chronic systemic corticosteroids (oral or intravenous) within 3 months or have received a burst of oral corticosteroids within the last 2 weeks prior to screening
• Have received Xolair therapy at any time within 12 months prior to screening
• Are pregnant or lactating
• Have a known hypersensitivity to any ingredients of Xolair, including excipients (sucrose, histidine, polysorbate 20)
• Have a lifetime history of smoking > 10-pack years
• Have active lung disease other than asthma (e.g., chronic bronchitis, emphysema, cystic fibrosis, chronic obstructive pulmonary disease)
• Have a history of upper respiratory infection or lower respiratory infection within the 30 days prior to randomization
• Have a diagnosis of aspirin or nonsteroidal anti-inflammatory drug-induced asthma
• Have taken immunosuppressants or other investigational drugs within the 30 days prior to screening
• Have a significant medical illness other than asthma

• Minimum Eligible Age: 12 Years
• Maximum Eligible Age: 75 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Genentech, Inc.

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Karin Rosen, MD, PhD

Role: STUDY_DIRECTOR

Genentech, Inc.

Other Identifiers

Q2982g

Identifier Type: -

Identifier Source: org_study_id