Thursday, January 11, 2024

BETA-AMYLOID TEST FOR GLAUCOMA


 


Amydis Inc., is a company devoted to the development of ocular biomarkers for the detection of diseases of the eye, heart and brain. In the end of last year, the company announced the launch of its Phase 2 clinical program for the study of a novel retinal tracer, AMDX-2011P, which can detect amyloid-beta in glaucoma patients. This biomarker can detect molecular changes in the retina, which can add to the structural-functional changes seen in glaucoma patients.

There are reports suggesting amyloid-beta is a key factor in the pathogenesis of glaucoma. Amyloid beta is also associated with the development of Alzheimer’s disease, suggesting glaucoma is an “ocular Alzheimer’s disease”.

The patented retinal tracer, AMDX-2011P, is a small molecule which can be used to detect and quantify amyloid beta deposits in the retina using currently available imaging devices. Therefore, the procedure claims to increase the capture rate of glaucoma and improving clinical management. This is achieved through earlier intervention and potentially, facilitate amyloid beta targeted neuroprotective therapies.



In collaboration with the University of California-San Diego (UCSD), Amydis completed proof-of-concept studies demonstrating the Amydis tracers detect amyloid beta in post-mortem human eyes of glaucoma patients, but not healthy subjects. The results have been submitted for publication.

Dr. Stella Sarraf, Amydis founder and chief executive officer was quoted, “We are thrilled to launch a new clinical program for an eye disease. Enabling micron-level in-vivo tracking of retinal amyloid beta formation in glaucoma patients will add a gain-of-function test to current loss-of-function testing, empowering doctors to deliver better patient care,” “Our goal is to also facilitate the development of neuroprotective agents to help provide more therapeutics for patients.”

“If successful, the creation of a molecular endpoint with the Amydis technology has the potential to enhance standard of care for glaucoma patients by enabling improved diagnostic and prognostic evaluation, as well as being used as an endpoint to develop neuroprotective therapies,” said Dr. Robert N. Weinreb, Chair of the Amydis Scientific Advisory Board, Chair and Distinguished Professor of Ophthalmology at UCSD and Director of Shiley Eye Institute.

Amydis has launched a phase 2 open label, blinded endpoint assessment study of AMDX-2011P as a retinal tracer in subjects with primary open angle glaucoma. This trial is being conducted at three sites in Southern California to collect multi-modal retinal imaging data on 40 subjects. This multi-modal data will include optical coherence tomography (OCT) and OCT Angiography (OCT-A), enabling Amydis to map retinal amyloid beta, retinal structure (OCT), and retinal vascular (OCT-A) signatures and monitor their relative changes to better understand the pathophysiology of glaucoma.

Much like DARC technology, this technique also relies on intravenous injection of the tracer. That is an impractical technique for most patients visiting OPD clinics. Such diagnostic methods need to develop drops or use other routes for the tracer to reach the retina.

 


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