Study of a High-Dose Aflibercept in Participants With Diabetic Eye Disease (PHOTON)

Regeneron Pharmaceuticals

Status and phase: Completed; Phase 3; Phase 2

Conditions: Type 1 Diabetes Mellitus; Diabetic Macular Edema; Type 2 Diabetes Mellitus

Treatments: Drug: aflibercept; Drug: High-dose aflibercept

Study type: Interventional

Funder types: Industry

Identifiers

NCT04429503

2019-003643-30 (EudraCT Number)

VGFTe-HD-DME-1934

Details and patient eligibility

About

The primary objective of the study is to determine if treatment with high-dose aflibercept (HD) at intervals of 12 or 16 weeks provides non-inferior best corrected visual acuity (BCVA) compared to aflibercept dosed every 8 weeks.

The secondary objectives of the study are as follows:

• To determine the effect of HD vs. aflibercept on anatomic and other visual measures of response
• To evaluate the safety, immunogenicity, and pharmacokinetics (PK) of aflibercept

Enrollment: 660 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion and exclusion criteria

Key Inclusion Criteria:

• Diabetic macular edema (DME) with central involvement in the study eye
• Best corrected visual acuity (BCVA) early treatment diabetic retinopathy study (ETDRS) letter score of 78 to 24 (approximate Snellen equivalent of 20/32 to 20/320) in the study eye with decreased vision determined to be primarily the result of DME
• Willing and able to comply with clinic visits and study-related procedures
• Provide informed consent signed by study participant or legally acceptable representative

Extension Phase: All randomized patients that complete visit 26, week 96, as long as the patient 1) provides informed consent and 2) no treatment for DME has been given in the study eye other than the randomized study treatment.

Key Exclusion Criteria:

• Evidence of macular edema due to any cause other than diabetes mellitus in either eye
• Active proliferative diabetic retinopathy in the study eye
• IVT anti-VEGF treatment (aflibercept, ranibizumab, bevacizumab, brolucizumab, pegaptanib sodium) or panretinal laser photocoagulation (PRP) /macular laser photocoagulation within 12 weeks (84 days) or intraocular or periocular corticosteroids within 16 weeks (112 days) of the screening visit in the study eye
• Prior IVT investigational agents in either eye (eg, anti-ang-2/anti-VEGF bispecific monoclonal antibodies, gene therapy, etc.) at any time
• Treatment with ocriplasmin (JETREA®) in the study eye at any time

NOTE: Other Protocol Defined Inclusion/Exclusion Criteria Apply

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

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660 participants in 3 patient groups

aflibercept Q8

Active Comparator group

Description:

Administered every 8 weeks after a loading phase

Treatment:

Drug: aflibercept

High-Dose aflibercept Q12

Experimental group

Description:

Administered every 12 weeks after a loading phase

Treatment:

Drug: High-dose aflibercept

High-Dose aflibercept Q16

Experimental group

Description:

Administered every 16 weeks after a loading phase

Treatment:

Drug: High-dose aflibercept