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ProQR: RNA Therapy Has Potential to Restore Vision in Patients With Usher Syndrome

Usher syndrome is an inherited retinal degeneration that affects hearing, balance, and vision. Usher syndrome caused by USH2A mutations is one of the most common causes of retinitis pigmentosa (RP) with syndromic features. Currently there is no treatment for the sensory deficits caused by Usher syndrome.

In an attempt to fill this void, QR-421a is an antisense oligonucleotide (ASO) and designed to specifically target mutations in exon 13 of the USH2A gene for the treatment of patients with RP.