Explicação simples
EDIT-101 was injected under the retina to cut out a faulty piece of a gene causing a severe inherited blindness. Some patients saw meaningfully better. The programme was then stopped — not because it failed, but because so few people in the world have that exact mutation that developing it further did not make commercial sense. It is the clearest example in the field of good science ending for economic reasons.
Aprofundar
EDIT-101 delivered SpCas9 and dual guides by subretinal AAV5 injection to excise the intronic CEP290 c.2991+1655A>G variant causing Leber congenital amaurosis type 10. The Phase 1/2 BRILLIANCE trial reported clinically meaningful vision improvement in a subset of participants with an acceptable safety profile, published in the New England Journal of Medicine. Editas discontinued development, citing the small eligible population, and subsequently reset its pipeline around in vivo cardiovascular targets.
Sources
- New England Journal of Medicine (Pierce et al.) · 2024
Gene editing for CEP290-associated retinal degeneration ↗