Phase 2b Pivotal Study of Izokibep in Non-infectious, Intermediate-, Posterior- or Pan-uveitis

ACELYRIN

Status and phase: Terminated; Phase 2

Conditions: Uveitis

Treatments: Drug: Izokibep; Drug: Placebo

Study type: Interventional

Funder types: Industry

Identifiers

NCT05384249

2024-514975-16-00 (EU Trial (CTIS) Number)

21103

Details and patient eligibility

About

Izokibep is a small protein molecule that acts as a selective, potent inhibitor of interleukin-17A, to which it binds with high affinity. This study investigates izokibep in subjects with active non-infectious, intermediate-, posterior- or pan-uveitis requiring high-dose steroids.

Enrollment: 96 patients

Sex: All

Ages: 18 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

General

• Subject has provided signed informed consent including consenting to comply with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol.
• 18 years to 75 years of age

Type of Subject and Disease Characteristics

• Subject is diagnosed with non-infectious intermediate-, posterior- or pan-uveitis

• Active disease defined by the presence of at least 1 of the following criteria in at least 1 eye despite treatment with stable doses of corticosteroids for at least 2 weeks prior to day 1:

  • Active, inflammatory, chorioretinal and/or inflammatory retinal vascular lesion by dilated indirect ophthalmoscopy, fundus photography, fluorescein angiography (FA), and Spectral-Domain Optical Coherence Tomography (SD-OCT) to determine whether a lesion is active or inactive (the central reading center assessment using FA, fundus photography and/or SD-OCT is required to confirm eligibility prior to day 1).
  • ≥ 2+ vitreous haze (National Eye Institute [NEI]/Standardization of Uveitis Nomenclature [SUN] criteria) by digital indirect ophthalmoscope and fundus photography (the central reading center assessment using fundus photography is required to confirm eligibility prior to day 1).

• Currently receiving treatment with oral corticosteroids (≥ 7.5 mg/day to ≤ 40 mg/day oral prednisone/prednisolone or corticosteroid equivalent) at a stable dose for at least 2 weeks prior to day 1.

Exclusion criteria

Disease-related Medical Conditions

• Subject with isolated anterior uveitis
• Subject with serpiginous choroidopathy
• Subject with confirmed or suspected infectious uveitis
• Subject with corneal or lens opacity that precludes visualization of the fundus or that likely requires cataract surgery during the duration of the study
• Subject with intraocular pressure of ≥ 25 mmHg while on ≥ 2 glaucoma medications or evidence of glaucomatous optic nerve injury
• Subject with severe vitreous haze that precludes visualization of the fundus prior to first dose of study drug
• Subject has a contraindication for mydriatic eye drops OR subject cannot be dilated sufficiently well to permit good fundus visualization
• Subject with best corrected visual acuity (BCVA) < 20 letters (Early Treatment Diabetic Retinopathy Study [ETDRS]) in at least 1 eye prior to first dose of study drug
• Subject with proliferative or severe non-proliferative retinopathy or clinically significant macular edema due to diabetic retinopathy
• Subject with neovascular/wet age-related macular degeneration
• Subject with an abnormality of the vitreo-retinal interface with the potential for macular structural damage independent of the inflammatory process
• Subject with a history of active scleritis ≤ 12 months of first dose of study drug

Other protocol defined Inclusion/Exclusion criteria may apply

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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96 participants in 2 patient groups, including a placebo group

Group 1: Placebo subcutaneous once weekly

Placebo Comparator group

Description:

Participants will receive placebo every week to week 51.

Treatment:

Drug: Placebo

Group 2: Izokibep subcutaneous once weekly

Experimental group

Description:

Participants will receive izokibep every week to week 51.

Treatment:

Drug: Izokibep