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Avacincaptad Pegol Open-Label Extension for Patients With Geographic Atrophy

An Open-label Extension (OLE) Phase 3 Trial to Assess the Safety of Intravitreal Administration of Avacincaptad Pegol (Complement C5 Inhibitor) in Patients With Geographic Atrophy Who Previously Completed Phase 3 Study ISEE2008 (GATHER2)

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05536297
Enrollment
278
Registered
2022-09-10
Start date
2022-09-26
Completion date
2025-04-10
Last updated
2026-05-18

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

Conditions

Geographic Atrophy, Age-Related Macular Degeneration

Keywords

Geographic Atrophy;, Macular Degeneration;, ARC1905;, Avacincaptad pegol;, Zimura (previous name);, Izervay

Brief summary

The purpose of this study is to assess long-term safety of avacincaptad pegol intravitreal administration for patients with geographic atrophy (GA) who completed Study ISEE2008 (GATHER2) through the Month 23 visit on study treatment (either avacincaptad pegol or Sham).

Interventions

Intravitreal Injection

Sponsors

Astellas Pharma Global Development, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
50 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Male or female patients aged 50 years or greater diagnosed with GA inside and/or outside of the fovea who completed Study ISEE2008 (GATHER2) through the Month 24 visit on study treatment. * Patient must provide new written informed consent for this OLE trial prior to participation. * Patient must have the ability to return for all trial visits for the duration of the 18-month trial.

Exclusion criteria

* Patient did not complete Study ISEE2008 (GATHER2) through the Month 24 visit on study treatment (either avacincaptad pegol or Sham). * Patient who had the study drug permanently withdrawn for an AE during ISEE2008 are not eligible. * Patient did not enroll into this OLE trial within the 90 day enrollment period. * Patient who is pregnant or nursing.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Adverse Events (AEs)Up to 18 monthsAn AE is defined as any untoward medical occurrence in a participant including unfavorable and unintended signs, symptoms or disease temporally associated with the use of a medicinal product and which does not necessarily have to have a causal relationship to this treatment. AEs include illnesses with onset during the trial, or exacerbations of pre-existing illnesses. Exacerbation of pre-existing illness is defined as a significant increase in the severity of the illness as compared to the start of the trial and was considered when a participant requires new or additional treatment for that illness. Lack of or insufficient clinical response or efficacy was not recorded as an AE.

Secondary

MeasureTime frameDescription
Number of Participants With Anti-drug Antibody (ADA)Up to 18 monthsNumber of participants with ADA = Post-baseline positive (in Baseline negative group) + treatment-boosted ADA positive (in Baseline positive group) / participants with a Baseline and at least one post-baseline sample. For participants whose ADA status is positive at Baseline, a post-baseline titer value that is \>= 4 times higher than the Baseline is considered treatment-boosted ADA.
Plasma Concentrations of ACPMonths 1, 2, 4, 7, 13, and 18Concentrations below the lower limit of quantification (3.36 ng/mL) are set to zero for calculation of summary statistics.

Countries

Argentina, Australia, Austria, Belgium, Brazil, Canada, Colombia, Croatia, Czechia, France, Germany, Hungary, Israel, Italy, Latvia, Spain, United States

Contacts

STUDY_DIRECTORMedical Director

Astellas Pharma Global Development, Inc.

Participant flow

Recruitment details

Participants who completed study ISEE2008 (NCT04435366; GATHER2) through the Month 23 visit on assigned treatment (avacincaptad pegol \[ACP\] or sham) were enrolled in the study.

Pre-assignment details

Participants who met all inclusion criteria and none of the exclusion criteria were enrolled in the study.

Baseline characteristics

Characteristic
Age, Continuous77.6 years
STANDARD_DEVIATION 8.6
Age, Customized
Adolescents (12-17 years)
0 Participants
Age, Customized
Adults (18-64 years)
9 Participants
Age, Customized
Children (2-11 years)
0 Participants
Age, Customized
Elderly 85 years and over
62 Participants
Age, Customized
Elderly (From 65-84 years)
193 Participants
Age, Customized
Infants and toddlers (28 days-23 months)
0 Participants
Age, Customized
In Utero
0 Participants
Age, Customized
Newborns (0-27 days)
0 Participants
Age, Customized
Pre-term newborn - gestational age < 37 wk
0 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
4 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
45 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
39 Participants
Race/Ethnicity, Customized
American Indian or Alaska Native
0 Participants
Race/Ethnicity, Customized
Asian
0 Participants
Race/Ethnicity, Customized
Black or African American
1 Participants
Race/Ethnicity, Customized
Native Hawaiian or Other Pacific Islander
0 Participants
Race/Ethnicity, Customized
Not Reported
19 Participants
Race/Ethnicity, Customized
Other
2 Participants
Race/Ethnicity, Customized
Unknown
0 Participants
Race/Ethnicity, Customized
White
57 Participants
Sex: Female, Male
Female
38 Participants
Sex: Female, Male
Male
18 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 642 / 623 / 152
other
Total, other adverse events
42 / 6439 / 6193 / 151
serious
Total, serious adverse events
14 / 6413 / 6124 / 151

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 19, 2026