ADVM-022 Intravitreal Gene Therapy for DME

Time to worsening of DME disease activity in the study eye through 96 weeks.

Time to worsening of DME disease activity defined by either: An increase in CST > 50 µm as assessed by SD-OCT compared to the lower of the two CST measurements recorded at Day 1 or Week 4; A loss of > 5 letters in BCVA due to worsening DME disease activity compared to the higher of the two BCVA measurements recorded at Day 1 or Week 4. Number of weeks was relative to Day 1.

Incidence of ocular adverse events (AEs) through 96 weeks

Incidence of non-ocular adverse events (AEs) through 96 weeks.

Central subfield thickness is a measurement of the thickness of the retina in a circular area around the fovea. Least squares mean change from Baseline in central subfield thickness at Week 96 is presented for the study eye.

Least squares mean change from Baseline in BCVA score over time was measured over time through week 96 in the study eye by ETDRS letters.

Frequency of supplemental aflibercept (2 mg IVT) injections was assessed in the study eye over time during the study.

Participants were analyzed according to the study treatments they actually received on Days 1 and 8.

The rate of supplemental aflibercept per year = Total number of supplemental aflibercept injections / Total years at-risk (at-risk duration starting at Day 8).

Diabetic Retinopathy Severity Score was determined by the Central Reading Center using ultra-wide field color retinopathy fundus photography. The score represents a comprehensive evaluation of retinal health, including the presence of microaneurysms, hemorrhages, and other abnormalities in the retina of the study eye. The score ranges from 10 to 85 and is divided into 13-steps used to classify increasing diabetic retinopathy severity (with higher scored indicating more advanced stages of Diabetic Retinopathy). In this endpoint a 2-step improvement indicates an improvement in a participant across 2 steps of the 13-step scale.

Diabetic Retinopathy Severity Score was determined by the Central Reading Center using ultra-wide field color retinopathy fundus photography. The score represents a comprehensive evaluation of retinal health, including the presence of microaneurysms, hemorrhages, and other abnormalities in the retina of the study eye. The score ranges from 10 to 85 and is divided into 13-steps used to classify increasing diabetic retinopathy severity (with higher scored indicating more advanced stages of Diabetic Retinopathy). In this endpoint a 3-step improvement indicates an improvement in a participant across 3 steps of the 13-step scale.

Diabetic Retinopathy Severity Score was determined by the Central Reading Center using ultra-wide field color retinopathy fundus photography. The score represents a comprehensive evaluation of retinal health, including the presence of microaneurysms, hemorrhages, and other abnormalities in the retina of the study eye. The score ranges from 10 to 85 and is divided into 13-steps used to classify increasing diabetic retinopathy severity (with higher scored indicating more advanced stages of Diabetic Retinopathy). In this endpoint a 2-step worsening indicates a worsening across 2 steps of the 13-step scale.

Note: 2-step worsening in DRSS was observed in 2 participants in both the control arm and the ADVM-022 6E11 vg/eye arm. These participants experienced ocular adverse events which may have contributed, at least in part, to the worsening in DRSS. This included one participant in the ADVM-022 6E11 vg/eye arm who had a SUSAR of Hypotony of eye (secondary to intraocular inflammation).

Diabetic Retinopathy Severity Score was determined by the Central Reading Center using ultra-wide field color retinopathy fundus photography. The score represents a comprehensive evaluation of retinal health, including the presence of microaneurysms, hemorrhages, and other abnormalities in the retina of the study eye. The score ranges from 10 to 85 with higher scored indicating more advanced stages of Diabetic Retinopathy. The incidence of 3-step worsening in DRSS score over time at Week 96 is presented. Visits with a 3-step or greater worsening in DRSS were considered separate events.

Note: 3-step worsening in DRSS was observed in one participant each in the control arm and the ADVM-022 6E11 vg/eye arm. Both participants experienced ocular adverse events which may have contributed, at least in part, to the worsening in DRSS. This included one participant in the ADVM-022 6E11 vg/eye arm who had a SUSAR of Hypotony of eye (secondary to intraocular inflammation).

Occurrence of any vision threatening complication over time though 96 weeks. Results present the incidence of participants who experienced "Any Vision Threatening Complications" (defined as any Vitreous Haemorrhage adverse event (AE), Anterior Segment Neovascularization AE, High-risk proliferative DR (defined as DSSR >= 71), or Tractional Retinal Detachment AE) in the study eye from Day 1 through 96 weeks.

Note: AEs of Vitreous Haemorrhage and High-risk proliferative DR were reported in 1 participant in the control arm and in 2 separate participants in the 6E11 vg/eye arm. No AE of Tractional Retinal Detachment or Anterior Segment Neovascularization occurred.

Central subfield thickness is a measurement of the thickness of the retina in a circular area around the fovea. Incidence of participants with Central subfield thickness of less than 300 μm over time in the study eye through Week 96 is presented.