Regenxbio has unveiled positive one-year data from the Phase II ALTITUDEtrial of ABBV-RGX-314 to treat diabetic retinopathy (DR) without centre-involved diabetic macular oedema (CI-DME) using in-office suprachoroidal delivery.

ALTITUDE is an open-label, randomised, controlled, multi-centre and dose-escalation study.

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It is designed to assess the safety, tolerability and efficacy of ABBV-RGX-314’s suprachoroidal delivery using the SCS Microinjectorin patients with moderately severe or severe non-proliferative diabetic retinopathy (NPDR) or mild proliferative diabetic retinopathy (PDR).

ABBV-RGX-314, being developed in partnership with AbbVie, is under assessment as a potential one-time gene therapy for wet age-related macular degeneration (DR) and other chronic retinal conditions.

It continues to be well-tolerated in 50 subjects from dose levels 1 and 2 (Cohorts 1-3), with no serious adverse events related to the drug.

Dose level two at one year reduced vision-threatening events and prevented disease progression in non-proliferative diabetic retinopathy patients.

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In the trial, 70.8% of patients showed an improvement in their Diabetic Retinopathy Severity Scale, compared to 25% in the control group.

No worsening occurred in 0% of cases while 37.5% experienced at least a two-step decline in the control group.

In addition, 4.2% experienced vision-threatening events compared to 37.5% in the control group.

ABBV-RGX-314 decreased vision-threatening incidents by 89% when compared to the control group.

Regenxbio chief medical officer Steve Pakola said: “A one-time, in-office injection of ABBV-RGX-314 gene therapy has the potential to stabilise and improve DR severity score and reduce the long-term risk of vision-threatening events.”

Cell & Gene therapy coverage on Clinical Trials Arena is supported by Cytiva.

Editorial content is independently produced and follows the highest standards of journalistic integrity. Topic sponsors are not involved in the creation of editorial content.

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