Study in Cat-Allergic Patients With Asthma to Evaluate the Efficacy of a Single Dose of REGN1908-1909 to Reduce Bronchoconstriction Upon Cat Allergen Challenge

Regeneron Pharmaceuticals

Status and phase

Completed

Phase 2

Conditions

Cat Allergy

Mild Asthma

Treatments

Drug: REGN1908-1909

Drug: Placebo

Study type

Interventional

Funder types

Industry

Identifiers

NCT03838731

R1908-1909-ALG-1703

2018-002477-22 (EudraCT Number)

Details and patient eligibility

About

The primary objective is to evaluate the prophylactic efficacy of REGN1908-1909 (anti-Fel d 1) administered as a single dose on day 1 in cat-allergic asthmatic patients not living with a cat in the prevention of a Controlled Cat Allergen Challenge-induced early asthmatic response (EAR) assessed by measures of lung function (FEV1) compared to placebo-treated patients.

Secondary Efficacy Objectives:

To evaluate the prophylactic efficacy of REGN1908-1909 administered as a single dose on day 1 in cat-allergic asthmatic patients not living with a cat, in the prevention of a Controlled Cat Allergen Challenge-induced: Allergic rhinitis and Ocular symptoms
To evaluate the prophylactic efficacy of REGN1908-1909 administered as a single dose on day 1 in cat-allergic asthmatic patients not living with a cat to increase the exposure to cat allergen, measured as a product of minute ventilation and time, required to induce EAR in a Controlled Cat Allergen Challenge as compared to placebo patients

Secondary Safety Objective:

To evaluate the safety and tolerability of REGN1908-1909 vs. placebo in patients with cat allergen-triggered asthma

Enrollment

56 patients

Sex

All

Ages

18 to 65 years old

Volunteers

No Healthy Volunteers

Inclusion and exclusion criteria

Key Inclusion Criteria:

Documented or patient reported history (for at least 2 years) of symptomatic cat allergen-triggered asthma with rhinitis with or without conjunctivitis
No cat exposure at home for the past year and must continue having no exposure at home during the study; cat exposure outside of the home shall be avoided for at least one week prior to any Cat Allergen Challenge and during the defined follow-up period
Less than 10 pack-years of smoking history

Key Exclusion Criteria:

Positive human immunodeficiency virus (HIV) test
Positive hepatitis test (HBsAg and hepatitis C antibody)
History of significant multiple and/or severe allergies (including latex gloves) or has had an anaphylactic reaction or significant intolerability to prescription or nonprescription drugs or food
Participation in a prior REGN1908-1909 clinical trial
History of severe anaphylactic or severe asthmatic reactions to cat exposure
Active lung disease other than asthma
Treatment with an investigational drug within 2 months or within 5 half-lives (if known), whichever is longer, prior to screening
Persistent chronic or recurring acute infection requiring treatment with antibiotics, antivirals, or antifungals, or any untreated respiratory infections within 4 weeks prior to screening
History of life-threatening asthma, defined as an asthma episode that required intubation and/or was associated with hypercapnia, respiratory arrest, and/or hypoxic seizures
Treatment of asthma requiring systemic (oral or parenteral) corticosteroid treatment more than twice within 12 months or once within 3 months prior to screening or has been hospitalized or has attended the ER/Urgent Care facility for asthma more than twice in prior 12 months before screening.
History of hypersensitivity to corticosteroids or antihistamines, or drug treatment excipient