Clinical trial NCT04188015: Study of ANX007 in Participants With Primary Open-angle Glaucoma
Official title: A Phase 1b, Randomized, Double-masked, Sham-controlled Study of ANX007 Administered as Intravitreal Injections to Assess Safety and Tolerability in Participants With Primary Open-angle Glaucoma
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE1
Conditions: Open Angle Glaucoma
Lead sponsor: Annexon, Inc.
Sponsor class: INDUSTRY
First posted: 2019-12-05
Enrollment: 17
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: This is a double-masked, randomized, sham-controlled study evaluating two dose levels of ANX007 vs sham, administered as repeat Intravitreal (IVT) injections in patients with Primary Open-angle Glaucoma.

Detailed description: This is a phase 1b, double-masked, sham-controlled study evaluating 2 dose levels of ANX007 administered as 2 IVT injections separated by 4 weeks. Approximately 15-29 subjects will be enrolled. An interim analysis of the initial set of 15 participants may be conducted. Based on this analysis, an additional 10-14 participants may be enrolled at a 1:1 ratio to receive one of the two dose levels.

The primary objective is to evaluate the safety and tolerability of repeat IVT injections of ANX007 in participants with primary open-angle glaucoma. Secondary objectives are to evaluate the anterior chamber fluid pharmacokinetics (PK) of ANX007, PD effect of ANX007 on anterior chamber fluid C1q activity, and immunogenicity. An exploratory objective will evaluate ocular PD effect of ANX007.

Eligibility criteria: Inclusion Criteria:

1. Male or female age 18 years, and above.
2. Diagnosis of primary open-angle glaucoma.
3. Ability to perform a reliable visual field test in the study eye with a cutoff of 33% for fixation losses and 33% for false-positive response rates.
4. Intraocular pressure (IOP) \<21 mm Hg at screening and Day 1.
5. The IOP treatment regimen in the study eye should be stable for at least 4 weeks prior to injection, with no change in the IOP treatment regimen anticipated throughout study participation.
6. Ability to comply with the requirements of the study and complete the full sequence of protocol specified injections, procedures, and evaluations.

Exclusion Criteria:

1. Extensive glaucomatous visual-field damage with a mean deviation worse than -18 dB on Humphrey visual field testing.
2. Any current or prior ocular pathology, other than glaucoma, which could interfere with the conduct of the study including, but not limited to, retinal or optic nerve disease and media opacity in the study eye.
3. History of intraocular inflammatory or infectious eye disease in the study eye.
4. Ocular trauma in the study eye within the preceding 6 months.
5. A history of uncomplicated cataract surgery less than 3 months prior to injection, or trabeculectomy, iridotomy, or other ocular procedures in the study eye that could affect drug distribution and excretion.
6. Any abnormality preventing reliable tonometry in the study eye.
7. Concurrent use of glucocorticoid medications administered by any ocular or systemic route. Nasal, inhaled, and dermatologic (if not administered around the eyes) glucocorticoids are permitted.
8. Receiving monoamine oxidase inhibitor therapy or patient-reported hypersensitivity to any component of apraclonidine, brimonidine, clonidine, phenylephrine, povidone iodine, proparacaine, or ANX007.
9. Active or history of malignancy within the past 5 years with the exception of curatively treated, basal cell carcinoma.
10. Previous treatment with another humanized monoclonal antibody, Fab or Fab'2.
11. History of any autoimmune or neurologic disease.

Primary outcomes:
measure: To evaluate the safety and tolerability of ANX007 in participants with primary open-angle glaucoma as measured by occurrence of treatment-emergent adverse events.
timeFrame: Day 85
Secondary outcomes:
measure: Evaluate PK parameters of ANX007 in serum after repeat injections
timeFrame: Day 29
measure: Evaluate PK parameters of ANX007 in serum after repeat injections
timeFrame: Day 29
measure: Evaluate PK parameters of ANX007 in aqueous humor after repeat intravitreal injections
timeFrame: Day 29
measure: Evaluate PK parameters of ANX007 in aqueous humor after repeat intravitreal injections
timeFrame: Day 29
measure: Evaluate PD parameters of ANX007 in aqueous humor after repeat intravitreal injections
timeFrame: Day 29
measure: Evaluate PD parameters of ANX007 in aqueous humor after repeat intravitreal injections
timeFrame: Day 29
measure: Evaluate PD parameters of ANX007 in serum after repeat intravitreal injections
timeFrame: Day 29
measure: Evaluate PD parameters of ANX007 in serum after repeat intravitreal injections
timeFrame: Day 29
measure: Immunogenicity of ANX007 as measured by serum anti-drug antibodies (ADA) after repeat intravitreal injections of ANX007
timeFrame: Day 84
Other outcomes:
Locations:
city: Newport Beach
country: United States
facility: Eye Research Foundation
state: California
city: Stanford
country: United States
facility: Stanford Health Care
state: California
Study officials:
affiliation: Annexon Biosciences
name: Eric Humphriss
role: STUDY_DIRECTOR
References: