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Investigating Geographic Atrophy Insights (i-GAIN) Natural History Study

A Multicentre, Natural History, Non-interventional Study Evaluating Biomarkers In Participants With Geographic Atrophy(GA) Secondary To Age-Related Macular Degeneration (AMD)

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05797896
Acronym
i-GAIN
Enrollment
250
Registered
2023-04-04
Start date
2023-02-07
Completion date
2027-07-31
Last updated
2025-06-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dry Age-related Macular Degeneration, Eye Diseases, Geographic Atrophy, Macular Atrophy, Macular Degeneration, Retinal Degeneration, Retinal Disease

Keywords

Dry Age-related Macular Degeneration, Geographic Atrophy, Retinal Disease, Macular Degeneration, Macular Atrophy, Retinal Degeneration, Eye Diseases, AMD, GA

Brief summary

An observational study to investigate the natural history and evaluate biomarkers of participants with geographic atrophy secondary to age-related macular degeneration

Detailed description

Prospective, observational study to assess the relationships between circulating levels of complement proteins measured using the Complement Precision Medicine (CPM) Platform, genetic profile and lesion progression in subjects with Geographic Atrophy (GA) secondary to Age-related Macular Degeneration (AMD) up to a 24-month period

Interventions

None listed

Sponsors

Complement Therapeutics
Lead SponsorINDUSTRY

Study design

Observational model
CASE_ONLY
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
65 Years to No maximum

Inclusion criteria

1. Clinical diagnosis of bilateral GA due to AMD as confirmed by fundoscopy and imaging at Screening 2. GA lesion sizes of ≥ 1.25 mm2 to ≤ 17 mm2 (approximately 1-7 disc diameters) in at least one eye as per Central Reading Center 3. Willing and able to provide written informed consent 4. Male or female aged 65 years and over

Exclusion criteria

1. History of neovascular (wet) AMD or presence of neovascular (wet) AMD in either eye confirmed by fundoscopy at screening and/or any pre-existing retinal imaging 2. History of intravitreal (IVT) injection in the study eye. Note: Intravitreal treatment with pegcetacoplan (Syfovre®) and avacincaptad pegol (IzervayTM) if approved within the participant's country of origin AND if deemed necessary by the Principal Investigator (PI) is allowed in the fellow eye only. IVT injections in the study eye are prohibited. 3. History of uveitis or endophthalmitis 4. High myopia (more than 6 diopter) in the study eye 5. Any ocular pathology which would impede clear imaging of the macula, e.g. intra-ocular opacities 6. Macular changes from causes other than AMD 7. Diabetic retinopathy in either eye. Note: Presence of systemic diabetes with no retinopathy is not exclusionary 8. Any other physical condition which would prevent the participant from undertaking imaging procedures 9. Any cell or gene therapy in either eye

Design outcomes

Primary

MeasureTime frameDescription
Levels of complement proteinsMonth 6, 12,18, 24To assess the correlation between circulating levels of complement proteins measured using the Complement Precision Medicine (CPM) Platform and Geographic Atrophy (GA) secondary to Age-related Macular Degeneration (AMD)

Secondary

MeasureTime frameDescription
GeneticsUp to 24 monthsTo investigate the relationship between variants in genes or loci associated with AMD and the complement profile measured using the CPM platform
Complement Proteins Intra-individual VariationUp to 24 monthsTo determine the intra-individual variation in complement profile using the Complement Precision Medicine (CPM) Platform, in participants with GA
Complement Proteins and Progression of GAUp to 24 monthsTo investigate whether there is a relationship between progression of GA and complement profile measured using the Complement Precision Medicine (CPM) platform
Geographic AtrophyUp to 24 monthsTo investigate whether there is a relationship between progression of GA and complement profile measured using the CPM platform
Choroidal Blood Flow and GA Lesion ProgressionUp to 24 monthsTo investigate the relationships between choroidal blood flow and structure and GA lesion progression
CRP LevelsUp to 24 monthsTo observe the influence of any past or concurrent illnesses, in particular inflammation-related illnesses, rise in serum CRP or of any medications on complement profile using the CPM Platform
Choroidal Blood Flow and GeneticsUp to 24 monthsTo investigate the relationship in genes or loci associated with AMD and choroidal blood flow and structure

Countries

United Kingdom, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026