Sylentis Initiates a Phase III Study for the Treatment of Dry Eye Syndrome

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SYL1001 is an advance in the development of innovative compounds in different therapeutic fields, through the novel technology of gene silencing, based on RNA interference (RNAi). In the HELIX study, more than 30 centers from 5 European countries (Spain, Germany, Estonia, Portugal and Italy) will participate with the objective of evaluating the effect of the ophthalmological solution SYL1001 for improvements in the signs and symptoms of dry eye syndrome in about 300 patients an area in which few therapeutic options exist today. SYL1001 is a compound based on RNAi being administered in the form of eye drops that block the synthesis of a receptor implicated in the pathology of dry eye syndrome.  

Patients with dry-eye syndrome suffer the chronic loss of lubrication and hydration on the ocular surface. The risk of developing this disorder increases in 35% every decade thereafter^[2]. Around the world, 344 million people suffer from this syndrome.

Dry eye syndrome is characteristic in people that live in developed countries and is caused by pollution, air conditioning, the use of contact lenses, refractive eye surgery or the continued use of computers. The most common symptoms of this pathology are burning, a constant itching, eye fatigue, dryness, blurred vision, the sensation of having a foreign body or eye pain^[1], are some of the symptoms

As explained by Dr Ana Isabel Jimenez, COO and Director of R&D at Sylentis, "the RNA interference on which we are working, could improve the signs and symptoms for patients that suffer from this syndrome, given that this compound could reduce the inflammatory parameters of the eye´s surface, could improve the quality of the tear and could reduce the ocular pain associated with dry eye syndrome. We consider that our molecule SYL1001 could be a very effective and important therapeutic alternative for these patients".

The Company is working on the investigation of new treatments for ophthalmological and inflammatory illnesses. "Up to today, the line of work in which we have more rapidly advanced in is in ophthalmology, for the treatment of illnesses such as dry eye syndrome, glaucoma, ocular allergies and illnesses of the retina", added Dr Jimenez.  

What is RNA interference? 

RNA interference is an innovative technology that looks for a reduction in the anomalous production of protein, silencing the RNA Messenger. The RNAi provides a step forward, as it provides a new mechanism of action to confront numerous pathologies^[2]. Nowadays there are two marketed products based on this technology and there are several drugs in different phases of clinical development.

Pathologies, such as dry eye syndrome, are produced by an alteration in certain proteins. Through this technology, the production of proteins that take part in various pathologies could be decreased or very specifically controlled^[3].

HELIX, a clinical trial study 

With the purpose of progressing in this field, Sylentis has begun the multicenter, random, controlled and double blind Phase III clinical trial in more than 30 hospitals in Spain, Germany, Estonia, Portugal and Italy. The trial, in which 300 patients are going to be enrolled will evaluate the efficacy of the product patented by Sylentis, SYL1001, in the treatment of the signs and symptoms of dry eye disease^[4].

For more information about the clinical trial: https://clinicaltrials.gov/ct2/show/NCT03108664?term=SYL1001&rank=2

For more information (only available in Spanish) 

Whats is RNA interference? https://youtu.be/T21N_dPM0_k

Dry eye syndrome: https://youtu.be/R-h_4_Yyq2g

1. The definition and classification of dry eye disease: report of the Definition and Classification Subcommittee of the International Dry Eye WorkShop (2007). Ocul Surf, 2007. 5(2): p. 75-92 

2. Martínez T, Jimenez AI, Pañeda C. Short-interference RNAs: becoming medicines. EXCLI Journal, 2015;14:714-46 

3. Pañeda C, González V, Martínez T, Ruz V, Vargas B and Jimenez AI. RNAi based therapies for ocular conditions. In Proceedings of the 11th ISOPT,2014, 25-30, Medimond, Bologna, Italy 

4. Benitez-Del Castillo JM [https://www.ncbi.nlm.nih.gov/pubmed/?term=Benitez-Del-Castillo%20JM%5BAuthor%5D&cauthor=true&cauthor_uid=27893109 ], . Protocol No.: SYL1001_IV. EUDRACT No: 2016-003903-79. A double-masked study of SYL1001 in patients with moderate to severe dry eye disease (DED). HELIX Study (Phase III). Version 1.1: December 14th, 2016. Sylentis SAU-Pharma Mar Group 

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SOURCE PharmaMar