ClinicalTrials.Veeva

Menu
The trial is taking place at:
P

Palmetto Retina Center | West Columbia, SC

Veeva-enabled site

HORIZON: A Phase II Study to Evaluate the Safety and Efficacy of Two Doses of GT005

G

Gyroscope Therapeutics

Status and phase

Terminated
Phase 2

Conditions

Dry Age-related Macular Degeneration

Treatments

Drug: GT005: High Dose
Drug: GT005: Medium Dose

Study type

Interventional

Funder types

Industry

Identifiers

NCT04566445
CPPY988A12201 (Other Identifier)
GT005-03

Details and patient eligibility

About

The purpose of this clinical study is to evaluate the safety and efficacy of two doses of GT005 administered as a single subretinal injection in subjects with geographic atrophy secondary to age-related macular degeneration (AMD).

Full description

This is a Phase 2, open-label, outcomes-assessor masked, multicentre, randomised, controlled study to evaluate the safety and efficacy of two doses of GT005 administered as a single subretinal injection in subjects with GA secondary to AMD.

The trial includes a screening period of up to 8 weeks and a 96-week study period.

Subjects will be randomised to one of two groups; GT005 or the untreated control group.

Enrollment

255 patients

Sex

All

Ages

55+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  1. Able and willing to give written informed consent
  2. Age ≥55 years
  3. a. In Stage 1: Have a clinical diagnosis of GA secondary to AMD in the study eye, as determined by the Investigator, and a diagnosis of AMD in the contralateral eye; b. In Stage 2: Have a clinical diagnosis of GA secondary to AMD in the study eye, as determined by the Investigator, that is non-foveal, as determined by the central reading centre, or has a CFI rare variant genotype and meets inclusion criteria 3a, and a diagnosis of AMD in the contralateral eye (except if monocular)
  4. GA lesion(s) within an acceptable size on FAF, in the study eye
  5. The GA lesion in the study eye must reside completely within the FAF image
  6. Up to 25% of the enrolled study population are permitted to have CNV in the fellow eye
  7. Have a BCVA of ≥24 letters (6/95 or 20/320 Snellen acuity equivalent), using ETDRS charts, in the study eye
  8. a. In Stage 1: Meet one of the pre-specified AMD genetic subgroup criteria; b. In Stage 2: Genotyping is not required for study eligibility
  9. Able to attend all study visits and complete the study procedures
  10. Women of child-bearing potential must have a negative pregnancy test within 2 weeks prior to randomisation (not required for postmenopausal women) or provide documentation of being surgically sterilised

Exclusion criteria

  1. a. In Stage 1: Carriers of excluded genetic variants; b. In Stage 2: Subjects are excluded if they have a clinical diagnosis of Stargardt Disease or other retinal dystrophies
  2. Have a history, or evidence, of CNV in the study eye
  3. Presence of moderate/severe or worse non-proliferative, diabetic retinopathy in the study eye
  4. Have history of vitrectomy, sub-macular surgery, or macular photocoagulation in the study eye
  5. History of intraocular surgery in the study eye within 12 weeks prior to Visit 1
  6. Have clinically significant cataract that may require surgery during the study period in the study eye
  7. Presence of moderate to severe glaucomatous optic neuropathy, uncontrolled intraocular pressure (IOP), despite use of two or more topical agents; or a history of glaucoma-filtering or valve surgery
  8. Axial myopia of greater than -8 diopters in the study eye
  9. Have received any investigational product for the treatment of GA within the past 6 months or 5 half-lives (whichever is longer), other than nutritional supplements such as the age-related eye disease study (AREDS) formula
  10. Have received a gene or cell therapy at any time.
  11. Have a contraindication to the protocol specified corticosteroid regimen
  12. Are unwilling to use two forms of contraception (one of which being a barrier method) for 90 days post-dosing, if relevant
  13. Active malignancy within the past 12 months, except for appropriately treated carcinoma in situ of the cervix, non-melanoma skin carcinoma, or prostate cancer with a stable prostate-specific antigen (PSA) ≥ 12 months
  14. Have any other significant ocular or non-ocular medical or psychiatric condition which, in the opinion of the Investigator, may either put the subject at risk or may influence the results of the study

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Quadruple Blind

255 participants in 3 patient groups

GT005 Medium Dose
Experimental group
Description:
Approximately 83 subjects are planned, with subjects randomised to GT005 Medium Dose.
Treatment:
Drug: GT005: Medium Dose
GT005 High Dose
Experimental group
Description:
Approximately 83 subjects are planned, with subjects randomised to GT005 High Dose.
Treatment:
Drug: GT005: High Dose
Untreated control
No Intervention group
Description:
Approximately 83 subjects are planned, with subjects randomised to untreated control.

Trial contacts and locations

62

Loading...

Data sourced from clinicaltrials.gov

Clinical trials

Find clinical trialsTrials by location
© Copyright 2024 Veeva Systems