A Study to Identify and Characterize Adults and Pediatric Participants With Cat and/or Birch Allergy

The purpose of this Patient Identification and Characterization (PIC) study is to collect information and perform limited allergy-related procedures to determine if participants can qualify for cat and/or birch tree pollen allergy clinical research studies in the future. The study is also looking at how cat and/or birch tree pollen allergies have affected overall health.

NCT Number	NCT07710846
Lead Sponsor	Regeneron Pharmaceuticals
Conditions	Conjunctivitis Allergic
Enrollment	1,500 participants
Start Date	2026-08-17
Primary Completion	2028-01-10 (estimated)
Study Completion	2028-01-10 (estimated)
Updated on ClinicalTrials.gov	2026-07-17