Revisão sobre a terapia genética aprovada e a recuperação visual na amaurose congênita de Leber devido à mutação no gene RPE65
DOI:
https://doi.org/10.70313/2718.7446.v17.n01.284Palavras-chave:
Amaurose congênita de Leber, distrofias hereditárias da retina, gene RPE65, terapia gênicaResumo
As distrofias hereditárias da retina são um grupo de condições visuais que levam progressivamente à baixa visão e/ou à cegueira. Atualmente, sabe-se que mais de 390 genes diferentes estão envolvidos na causa dessas distrofias. A amaurose congênita de Leber apresenta-se congenitamente ou antes do primeiro ano de vida e é uma das distrofias retinianas mais graves de início precoce. A amaurose congênita de Leber e/ou retinose pigmentar tipo 20 devido a variantes bi-alélicas patogênicas no gene RPE65 é, até o momento, a única distrofia que tem tratamento genético aprovado por diferentes agências reguladoras internacionais, incluindo a Argentina desde 2021 (autorizado pela ANMAT). Atualmente, estão sendo desenvolvidos protocolos para novas terapias gênicas para outras anomalias, como a doença de Stargardt, a síndrome de Usher tipo IB, a retinite pigmentosa devido a mutações no gene RPGR, a coroideremia e muitas outras. Este artigo fará uma revisão dos conceitos atuais dessa doença e de sua terapia gênica.
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