Hereditary optic atrophy (OPA) is a group of neurodegenerative disorders characterized by a sudden or gradual loss of retinal ganglion cells function. OPA results from degeneration of the retinal ganglion cells whose axons form the optic nerve. Symptoms include a variable association of decreased visual acuity, visual field defects, and color vision abnormalities. All nonsyndromic OPAs characterized to date result from defects in genes encoding mitochondria-related proteins. The most frequent forms of nonsyndromic OPA are autosomal dominant OPA1-linked OPA (OPA1) and mitochondrial DNA-linked, maternally inherited Leber hereditary optic neuropathy (LHON). By contrast, autosomal recessive forms of optic atrophies (arOAs) are less frequent, and most cases are syndromic (e.g., OPA3 and OPA7). Isolated or nonsyndromic arOAs are believed to be extremely rare.
Gerber S, Charif M, Chevrollier A, Chaumette T, Angebault C, Kane MS, Paris A, Alban J, Quiles M, Delettre C, Bonneau D, Procaccio V, Amati-Bonneau P, Reynier P, Leruez S, Calmon R, Boddaert N, Funalot B, Rio M, Bouccara D, Meunier I, Sesaki H, Kaplan J, Hamel CP, Rozet JM, Lenaers G
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Mutations in DNM1L, as in OPA1, result in dominant optic atrophy despite opposite effects on mitochondrial fusion and fission.
Hanein S, Perrault I, Roche O, Gerber S, Khadom N, Rio M, Boddaert N, Jean-Pierre M, Brahimi N, Serre V, Chretien D, Delphin N, Fares-Taie L, Lachheb S, Rotig A, Meire F, Munnich A, Dufier JL, Kaplan J, Rozet JM
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TMEM126A, encoding a mitochondrial protein, is mutated in autosomal-recessive nonsyndromic optic atrophy.
Metodiev MD, Gerber S, Hubert L, Delahodde A, Chretien D, Gerard X, Amati-Bonneau P, Giacomotto MC, Boddaert N, Kaminska A, Desguerre I, Amiel J, Rio M, Kaplan J, Munnich A, Rotig A, Rozet JM, Besmond C
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Mutations in the tricarboxylic acid cycle enzyme, aconitase 2, cause either isolated or syndromic optic neuropathy with encephalopathy and cerebellar atrophy.
Caporali L, Magri S, Legati A, Del Dotto V, Tagliavini F, Balistreri F, Nasca A, La Morgia C, Carbonelli M, Valentino ML, Lamantea E, Baratta S, Schols L, Schule R, Barboni P, Cascavilla ML, Maresca A, Capristo M, Ardissone A, Pareyson D, Cammarata G, Melzi L, Zeviani M, Peverelli L, Lamperti C, Marzoli SB, Fang M, Synofzik M, Ghezzi D, Carelli V, Taroni F
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ATPase Domain AFG3L2 Mutations Alter OPA1 Processing and Cause Optic Neuropathy.
Del Dotto V, Ullah F, Di Meo I, Magini P, Gusic M, Maresca A, Caporali L, Palombo F, Tagliavini F, Baugh EH, Macao B, Szilagyi Z, Peron C, Gustafson MA, Khan K, La Morgia C, Barboni P, Carbonelli M, Valentino ML, Liguori R, Shashi V, Sullivan J, Nagaraj S, El-Dairi M, Iannaccone A, Cutcutache I, Bertini E, Carrozzo R, Emma F, Diomedi-Camassei F, Zanna C, Armstrong M, Page M, Stong N, Boesch S, Kopajtich R, Wortmann S, Sperl W, Davis EE, Copeland WC, Seri M, Falkenberg M, Prokisch H, Katsanis N, Tiranti V, Pippucci T, Carelli V
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SSBP1 mutations cause mtDNA depletion underlying a complex optic atrophy disorder.
Fiorini C, Degiorgi A, Cascavilla ML, Tropeano CV, La Morgia C, Battista M, Ormanbekova D, Palombo F, Carbonelli M, Bandello F, Carelli V, Maresca A, Barboni P, Baruffini E, Caporali L
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Recessive MECR pathogenic variants cause an LHON-like optic neuropathy.
