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A Non-Interventional Study Observing Short-Term Progression in Geographic Atrophy (GA)

Sponsor: Complement Therapeutics

NCT ID: NCT07144137

View on ClinicalTrials.gov ↗

At a glance

What the study gets you
Health checks and monitoring — no treatment given
Type of study
Observational (no treatment given)
Time in hospital
In-person visits at study sites — visit count not specified by the sponsor
Drug or intervention
Not specified by the sponsor
How long the study runs
Study runs about 23 months (dates as stated)
About the drug or intervention
Not specified by the sponsor
Patient visit burden
Not specified by the sponsor
Type of study
Observing health over time
Ages
55 Years and over
Who
All
Number of participants
75
Started
2025-07-30
Last checked
2026-10

Plain English Summary

What is this study?

  • • Testing a new treatment for geographic atrophy secondary to age-related macular degeneration
  • • Clinical study - 75 participants
  • • This is a non-interventional, observational study to provide insights into the short-term progression of GA secondary to AMD in participants aged ≥55 years

Who can take part?

  • • Ages 55 Years and over
  • • Diagnosed with geographic atrophy secondary to age-related macular degeneration

Where?

  • • Gloucester - Gloucestershire Royal Hospital
  • • London - Moorfields Eye Hospital
  • • London - Central Middlesex Hospital
  • • Southampton - University Hospital Southampton
  • • +5 more UK sites

This is a simplified summary. Always discuss with your doctor before making any decisions.

About This Trial

This is a non-interventional, observational study to provide insights into the short-term progression of GA secondary to AMD in participants aged ≥55 years. This is a multi-center, non-interventional, observational study which aims to identify participants who have progressive GA to allow quantification of structural and functional parameters that characterize the progression of GA, and to investigate whether these correlate with genetic or lifestyle factors.

Geographic Atrophy Secondary to Age-related Macular Degeneration

How this trial compares with your answers

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What we know so far

Condition· Matched your search
Age· Tell us your age for better matching
Gender· Tell us your sex for better matching

Still need:

  • • Tell us your age for better matching
  • • Tell us your sex for better matching

Preliminary match based on your answers. Full eligibility requires on-site assessment including medical history, physical exam, and lab tests. This does not guarantee enrolment.

Eligibility at a Glance

Key info

  • Age: 55 Years and over
  • Who can join: All genders

Who cannot take part

  • ✗Macular atrophy secondary to any condition other than AMD in the study eye.
  • ✗Any pathology of the macula other than GA secondary to AMD and other changes consistent with early, intermediate or...
  • ✗Evidence of prior or current Choroidal Neovascularization (CNV), also known as wet-AMD, in either eye.
  • ✗Atrophic retinal disease of causality other than AMD including monogenetic macular dystrophies (incorporating...
  • ✗A history of vitrectomy in the study eye.
See the full criteria
Inclusion: 1. Participants must be aged ≥55 years, at the time of signing the informed consent at the screening visit. 2. Participants with bilateral GA secondary to AMD as confirmed by the Central Reading Center using FAF and/or OCT images with at least 1 eye having a total GA lesion area must be between 1.25 mm2 and 17.5 mm2 inclusive, determined by FAF images taken at the screening visit. 3. Best-corrected visual acuity (BCVA) in both eyes should be sufficient to ensure navigational vision (defined as 20/400 or better for purposes of this study). 4. BCVA between 20 and 75 letters and LLVA\>0 letters using an ETDRS chart. 5. Mean retinal sensitivity as measured by microperimetry using the study grid must be equal to or greater than 5 dB. 6. Able and willing to provide signed informed consent which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol, and in the opinion of the investigator, is able to perform all study assessments. Exclusion criteria: 1. Macular atrophy secondary to any condition other than AMD in the study eye. 2. Any pathology of the macula other than GA secondary to AMD and other changes consistent with early, intermediate or atrophic AMD in the study eye. 3. Evidence of prior or current Choroidal Neovascularization (CNV), also known as wet-AMD, in either eye. 4. Atrophic retinal disease of causality other than AMD including monogenetic macular dystrophies (incorporating pattern dystrophy), myopia-related maculopathy and Stargardt disease in the study eye. 5. A history of vitrectomy in the study eye. 6. Any prior treatment for AMD or any prior intravitreal treatment for any indication in the study eye, except oral supplements of vitamins and minerals such as the age-related eye disease study (AREDS) formula. 7. Any intraocular surgery (except cataract surgery within 6 months of enrollment) or thermal laser within 3 months of screening, or any ophthalmic condition that may require surgery during the study. 8. Any macular laser, macular surgery or retinal surgery at any time point in the study eye. 9. Any ocular or periocular infection in the 12 weeks prior to screening. 10. History of uveitis or endophthalmitis in either eye. 11. Any sign of diabetic retinopathy in either eye, or HbA1c \>8, in the 12 months prior to enrollment. 12. High myopia or hyperopia (≥6 diopter) in the study eye. 13. Uncontrolled IOP measurement of ≥25 mmHg for \>1 month despite being on 2 or more ocular hypotensive agents, or IOP \>21 mm Hg in the presence of C/D asymmetry of \>0.3 per the reading center; or glaucomatous damage to the optic nerve or visual field. 14. Retinal disease other than AMD or other ocular disorders which may cause safety concerns per the judgment of the investigator; however, benign conditions of the vitreous or peripheral retina are not exclusionary (i.e., paving stone degeneration). 15. Any ophthalmologic condition that reduces the clarity of the media and that, in the opinion of the investigator interferes with ophthalmologic examination (e.g., cataract or corneal abnormalities) either at the time of enrollment or during the 2-year post dosing follow-up period; or prevents adequate imaging of the retina judged by the site or CRC. 16. Aphakia or absence of the posterior capsule. Previous violation of the posterior capsule is also excluded unless it occurred as a result of yttrium aluminum garnet (YAG) laser posterior capsulotomy in association with prior posterior chamber intraocular lens implantation and at least 60 days prior to baseline. 17. Medical or psychiatric conditions that, in the opinion of the investigator, make consistent follow-up over the treatment period unlikely, or in general a poor medical risk because of other systemic diseases or active uncontrolled infections, including but not limited to immunodeficiency state, autoimmune diseases, malignancy other than prostate or basal cell carcinoma, connective tissue disorders and collagen vascular disorders. 18. Participation in an interventional clinical study, or use of any experimental treatment for AMD or any investigational product within 6 months or 5 half-lives of the active ingredient (whichever is longer) prior to screening. 19. History of abnormal laboratory tests (e.g. hematology, serum chemistry, renal or liver function tests, or infectious disease screen) that in the opinion of the investigator is clinically significant at the time of enrollment and not suitable for study participation. 20. Hypersensitivity to medications used in (standard of care) study procedures. 21. Situations where, in the opinion of the investigator, the risk of harm to a participant outweighs any potential benefits from study participation (these could include participants with conditions such as brittle diabetes or advanced osteoporosis as examples). 22. History or current use of medications associated with macular changes, retinal dysfunction or optic nerve damage. These include but are not limited to the following prohibited concomitant medications: 23. Any previous gene or cell therapy (ophthalmic or systemic), 24. Chloroquine (where taken for \>30 days cumulative across participant's lifetime), hydroxychloroquine, platinum containing medications, ethambutol, tamoxifen, pentosan, chronic use of phosphodiesterase inhibitors, and GLP-1 antagonists in the setting of a crowded optic disc.

Where Is This Study? (9 UK sites)

Gloucestershire Royal Hospital

Gloucester GL1 3NN, United Kingdom

Recruiting
Hospital R&D contact (matched)

R&I Professional Services

ghn-tr.glos.riprofessionalservices@nhs.net033 422 5467

Moorfields Eye Hospital

London EC1V 2PD, United Kingdom

Recruiting
Hospital R&D contact (matched)

Research Portfolio Managers- Daniela Narvaez, Anika Kadchha, Abi Chandrakumar, Xin Liu

moorfields.resadmin@nhs.net0207 566 2036

Central Middlesex Hospital

London NW10 7NS, United Kingdom

Recruiting

University Hospital Southampton

Southampton SO16 6YD, United Kingdom

Recruiting
Hospital R&D contact (matched)

Dr Mikayala King

researchmanagement@uhs.nhs.uk023 81208215

Sunderland Eye lnfirmary

Sunderland SR2 9HP, United Kingdom

Recruiting

Belfast City Hospital

Belfast BT9 7AB, United Kingdom

Recruiting

Frimley Park Hospital

Frimley GU16 7UJ, United Kingdom

Recruiting
Hospital R&D contact (matched)

Clare Denford

fhft.research-innovation@nhs.net0300 613 2301

The Retina Clinic London

London W1G 7LB, United Kingdom

Recruiting

Manchester Royal Eye Hospital

Manchester M13 9WL, United Kingdom

Recruiting
Hospital R&D contact (matched)

Elizabeth Mainwaring

R&D.applications@mft.nhs.uk0161 276 3340

How to Get in Touch

Muhammad Ali Memon

Sponsor contact

CONTACT

clinicaloperations@complementtx.com
Data sourced from ClinicalTrials.gov · Last verified: 2026-10