A Study to Demonstrate How Well REGN1908-1909 Works in Reducing Ocular Allergy Signs and Symptoms… (NCT06602726) | Clinical Trial Compass
CompletedPhase 3
A Study to Demonstrate How Well REGN1908-1909 Works in Reducing Ocular Allergy Signs and Symptoms in Adult Participants With Cat Allergy
United States, Canada64 participantsStarted 2024-11-06
Plain-language summary
This study is researching 2 experimental drugs, REGN1908 and REGN1909, which are called REGN1908-1909 when mixed together (called "study drug") to reduce eye allergy signs and symptoms from cat allergy.
The aim of the study is to see how safe and effective the study drug is at lowering allergic eye signs and symptoms compared with placebo. A placebo looks like a treatment but does not contain any real medicine.
The study is looking at several other research questions, including:
* What side effects may happen from taking the study drug
* How much study drug is in the blood at different times
* Whether the body makes antibodies against the study drug (which could make the drug less effective or could lead to side effects)
Who can participate
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. Documented or participant-reported history of moderate to severe cat allergy for at least 2 years with bothersome ocular symptoms being near cat(s)
. Positive SPT with cat allergen extract (mean wheal diameter at least 5 mm greater than the negative control) at screening visit 1
. Positive Allergen-specific Immunoglobulin E (sIgE) tests for cat allergen and Fel d 1 (both ≥0.7 kUa/L) at screening visit 1
. Must be able to complete the screening CACs to confirm moderate to severe cat allergen-induced allergic conjunctivitis as described in the protocol
. Must not have lived with a cat(s) in the home for the past 3 years and must be willing to have no exposure to cat(s) at home throughout the study duration as described in the protocol
Exclusion criteria
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Ocular itch score
Timeframe: At day 8 post-Conjunctival Allergen Challenge (CAC)
. Participation in a prior clinical study and received either REGN1908-1909, REGN1908, or REGN1909 antibodies as described in the protocol
. Inability to complete or termination of the screening or confirmatory CAC (where applicable) due to a safety concern (eg, anaphylaxis), per PI judgement
. Significant and/or severe allergies, ocular, nasal, or systemic disease causing symptoms (eg, ocular itching, ocular redness, etc) that are expected to coincide or potentially interfere with the study CAC assessments, as described in the protocol
. Persistent chronic or recurring acute infection requiring treatment with systemic antibiotics, antivirals, or antifungals, or any untreated respiratory infections within 4 weeks prior to screening visit 1 as described in the protocol
. Presence of ocular conditions associated with acute or chronic vision loss, or any other ophthalmic disease or abnormality that may affect the study outcomes or participant safety, per Principal Investigator (PI) judgement as described in the protocol
. Uncontrolled asthma or on Global Initiative for Asthma (GINA) steps 4 to 5 as described in the protocol
. Abnormal lung function as judged by the investigator with Forced expiratory volume in 1 second (FEV1) \<70% of predicted at screening
. History of cat immunotherapy (eg, subcutaneous immunotherapy or any other route) in the 3 years prior to screening visit 1