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[$$] Biogen Buys Gene Therapy for Rare Eye Disease

The all-cash deal, which values Nightstar at around $877 million, hands Biogen a gene therapy for choroideremia, a rare, inherited eye disease that leads to blindness. The treatment is undergoing late-stage clinical trials. Nightstar, which was founded in 2013 based on research at the University of Oxford, also has several earlier-stage gene therapies in its pipeline, all aimed at rare inherited eye disorders.