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Search / Trial NCT04981717

A Study to Examine the Efficacy and Safety of Anti-Fel d 1 Antibodies Injections in Cat-allergic Adolescent and Adult Patients With Allergic Rhinitis Who Live With a Cat

Launched by REGENERON PHARMACEUTICALS · Jul 28, 2021

Trial Information

Current as of July 23, 2025

Terminated

Keywords

Cat Allergy Induced Allergic Rhinitis Allergic Conjunctivitis Asthma

ClinConnect Summary

No description provided

Gender

ALL

Eligibility criteria

  • Key Inclusion Criteria:
  • 1. Generally healthy males and females who are 12 years and older at the time of screening.
  • 2. Weight must be ≥40 kg at the time of screening
  • 3. Documented or patient reported history (for at least 2 years) of symptomatic cat allergen-triggered allergic rhinitis with or without conjunctivitis and with or without asthma as defined by all of the following criteria:
  • 1. Positive skin prick test (SPT) with cat hair extract (mean wheal diameter at least 5 mm greater than a negative control) at screening
  • 2. Positive allergen-specific IgE (sIgE) tests for cat and Fel d 1 (both ≥0.7 kUa/L at screening)
  • 3. Documented or patient reported history of nasal and/or ocular symptoms upon cat exposure
  • 4. Symptomatic despite the use of medications to treat their nasal and/or ocular symptoms
  • 4. At least 1 generally healthy cat (that is unlikely to die during the study) living in the home resulting in regular exposure
  • 5. A daily total rhinitis/conjunctivitis symptom score (total symptom score \[TSS\]) of at least 8 of 18 during at least 8 days of the 15-day baseline assessment period and use of standard, therapeutic doses of pharmacotherapy for the treatment of allergic rhinoconjunctivitis on at least 8 days of the 15-day baseline assessment period.
  • Key Exclusion Criteria:
  • 1. History of significant multiple and/or severe allergies, as assessed by the investigator, that would potentially interfere with the assessments during the baseline and 12-week efficacy assessment periods or confound results, per investigator discretion, including significant rhinitis or sinusitis due to daily contact with other allergens causing symptoms that are expected to coincide with the baseline period or any of the efficacy assessment periods
  • 2. Received REGN1908-1909 in a prior REGN1908-1909 clinical trial (receipt of placebo in a previous trial is allowed)
  • 3. Active lung disease other than asthma
  • 4. FEV1 less than 70% of predicted at screening or randomization
  • 5. Treatment with an investigational drug within 2 months or within 5 half-lives (if known), whichever is longer, prior to screening
  • 6. Persistent chronic or recurring acute infection requiring treatment with antibiotics, antivirals, or antifungals, or any untreated respiratory infections within 4 weeks prior to screening. Patients may be re-evaluated after resolution of symptoms and specified time duration
  • NOTE: Other protocol-defined Inclusion/ Exclusion Criteria apply

About Regeneron Pharmaceuticals

Regeneron Pharmaceuticals, a leading biotechnology company, is dedicated to transforming the lives of patients through innovative medicines. Founded in 1988, the company specializes in the discovery, development, and commercialization of cutting-edge therapies for serious diseases, leveraging advanced genetic technologies and a robust pipeline of novel drug candidates. With a strong focus on areas such as ophthalmology, oncology, immunology, and rare diseases, Regeneron is committed to scientific excellence and collaboration, striving to deliver safe and effective treatments that address unmet medical needs and improve patient outcomes globally.

Locations

Chicago, Illinois, United States

South Bend, Indiana, United States

Atlanta, Georgia, United States

Bronx, New York, United States

Liege, , Belgium

Pittsburgh, Pennsylvania, United States

Berlin, , Germany

Berlin, , Germany

New York, New York, United States

Brussels, , Belgium

Missoula, Montana, United States

Asheville, North Carolina, United States

Verona, New Jersey, United States

Chevy Chase, Maryland, United States

Milwaukee, Wisconsin, United States

Dresden, Sachsen, Germany

Brampton, Ontario, Canada

Gent, Oost Vlaanderen, Belgium

Leuven, Vlaams Brabant, Belgium

Kingston, Ontario, Canada

Cincinnati, Ohio, United States

Erpent, , Belgium

Brooklyn, New York, United States

Colorado Springs, Colorado, United States

Hamilton, Ontario, Canada

Seattle, Washington, United States

Lexington, Kentucky, United States

San Diego, California, United States

Dresden, Sachsen, Germany

Lublin, Lubelskie, Poland

Ocean City, New Jersey, United States

Mission Viejo, California, United States

Riverside, California, United States

Rolling Hills Estates, California, United States

Denver, Colorado, United States

Meridian, Idaho, United States

Oak Park, Illinois, United States

Springfield, Illinois, United States

Owensboro, Kentucky, United States

Baltimore, Maryland, United States

Ypsilanti, Michigan, United States

Plymouth, Minnesota, United States

Columbia, Missouri, United States

Lincoln, Nebraska, United States

Papillion, Nebraska, United States

Belleville, New Jersey, United States

Skillman, New Jersey, United States

Teaneck, New Jersey, United States

Columbus, Ohio, United States

Dublin, Ohio, United States

Oklahoma City, Oklahoma, United States

Happy Valley, Oregon, United States

Portland, Oregon, United States

East Providence, Rhode Island, United States

Warwick, Rhode Island, United States

Greenfield, Wisconsin, United States

Ottawa, Ontario, Canada

Stouffville, Ontario, Canada

Toronto, Ontario, Canada

Toronto, Ontario, Canada

Windsor, Ontario, Canada

Levis, Quebec, Canada

Trois Rivieres, Quebec, Canada

Quebec, , Canada

Strasbourg, Bas Rhin, France

Heidelberg, Baden Wurttemberg, Germany

Stuttgart, Baden Wurttemberg, Germany

Memmingen, Bayern, Germany

Dreieich, Hessen, Germany

Frankfurt Am Main, Hessen, Germany

Viernheim, Hessen, Germany

Dusseldorf, Nordrhein Westfalen, Germany

Munster, Nordrhein Westfalen, Germany

Dresden, Sachsen, Germany

Leipzig, Sachsen, Germany

Leipzig, Sachsen, Germany

Wroclaw, Dolnoslaskie, Poland

Wroclaw, Dolnoslaskie, Poland

Lodz, Lodzkie, Poland

Lodz, Lodzkie, Poland

Lodz, Lodzkie, Poland

Lodz, Lodzkie, Poland

Lodz, Lodzkie, Poland

Lublin, Lubelskie, Poland

Zamosc, Lubelskie, Poland

Krakow, Malopolskie, Poland

Tarnow, Malopolskie, Poland

Krakow, Malopolski, Poland

Piaseczno, Mazowieckie, Poland

Rzeszow, Podkarpackie, Poland

Bialystok, Podlaskie, Poland

Gdansk, Pomorskie, Poland

Kielce, Swietokrzyskie, Poland

Pila, Wielkopolskie, Poland

Poznan, , Poland

Patients applied

0 patients applied

Trial Officials

Clinical Trial Management

Study Director

Regeneron Pharmaceuticals

Timeline

First submit

Trial launched

Trial updated

Estimated completion

Not reported

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