Positive interim phase 2 results for MGB

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Ashvattha Therapeutics recently announced positive interim phase 2 results for migaldendranib (MGB).¹ MGB is described as a novel subcutaneously administered nanomedicine for the treatment of retinal vascular diseases.

The safety and efficacy of subcutaneous (subQ) MGB was evaluated in a phase 2 chronic dosing, open-label study in 27 subjects. The 27 subjects – 16 of which had wet age-related macular degeneration (AMD) and 11 of which had diabetic macular edema (DME) – had all previously been treated with anti-VEGF intravitreal injections (IVT) and met responder criteria.

MGB is a VEGF receptor tyrosine kinase inhibitor delivered via a hydroxyl dendrimer platform, the company said in a press release. “SubQ-administered MGB selectively targets activated cells in the retina, reducing VEGF expression and fluid production in both eyes simultaneously,” the company’s release said.

Subjects received a single anti-VEGF IVT and subQ MGB at baseline, followed by subQ MGB every 2 or 4 weeks for 40 weeks. An interim analysis focused on 24-week data from 8 wet AMD and 6 DME subjects.

Ashvattha shared the company’s new data from the subjects who completed 24 weeks of treatment in a poster presented at the 2025 Association for Research in Vision and Ophthalmology (ARVO) annual meeting held May 4-8 in Salt Lake City.

This data presented includes:¹

• A 79.9% reduction in wet AMD subjects and an 80% reduction in DME subjects compared to the 24 weeks prior to day 1. These results represent a 5.0-fold decrease in anti-VEGF treatment burden for both indications.
• A bilateral treatment effect with 66.7% reduction in fellow eye IVT injections for wet AMD subjects and 85.5% reduction for DME subjects.
• From baseline to week 24, the mean best corrected visual acuity improved by 3 letters in study eye of wet AMD subjects and improved by 4.5 letters in DME subjects.
• A mean central subfield thickness improvement of 45.5 microns in subjects with wet AMD and an improvement of 69.1 microns in subjects with DME.
• No serious adverse events or ocular adverse events related to MGB were reported. Injection site reactions were reported in 5 subjects (3 with wet AMD and 2 with DME), with only 26 total reactions across the 302 total subcutaneous injections.

Reference

1. Ashvattha Therapeutics. Ashvattha Therapeutics to Present Positive Phase 2 Results for Subcutaneous Migaldendranib in Retinal Vascular Disease at ARVO. GlobeNewswire News Room. Published May 7, 2025. Accessed May 15, 2025. https://www.globenewswire.com/news-release/2025/05/07/3076720/0/en/Ashvattha-Therapeutics-to-Present-Positive-Phase-2-Results-for-Subcutaneous-Migaldendranib-in-Retinal-Vascular-Disease-at-ARVO.html

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