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MIR204 n.37C>T variant as a cause of chorioretinal dystrophy variably associated with iris coloboma, early-onset cataracts and congenital glaucoma

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JEDLICKOVA Jana VAJTER Marie BÁRTA Tomáš BLACK Graeme C M PERVEEN Rahat MARES Jan FICHTL Marek KOUSAL Bohdan DUDAKOVA Lubica LISKOVA Petra

Rok publikování 2023
Druh Článek v odborném periodiku
Časopis / Zdroj Clinical Genetics
Fakulta / Pracoviště MU

Lékařská fakulta

Citace
www https://onlinelibrary.wiley.com/doi/10.1111/cge.14391
Doi http://dx.doi.org/10.1111/cge.14391
Klíčová slova albinism; chorioretinal dystrophy; coloboma; congenital glaucoma; MIR204; OCA2; premature cataract
Popis Four members of a three-generation Czech family with early-onset chorioretinal dystrophy were shown to be heterozygous carriers of the n.37C>T in MIR204. The identification of this previously reported pathogenic variant confirms the existence of a distinct clinical entity caused by a sequence change in MIR204. Chorioretinal dystrophy was variably associated with iris coloboma, congenital glaucoma, and premature cataracts extending the phenotypic range of the condition. In silico analysis of the n.37C>T variant revealed 713 novel targets. Additionally, four family members were shown to be affected by albinism resulting from biallelic pathogenic OCA2 variants. Haplotype analysis excluded relatedness with the original family reported to harbour the n.37C>T variant in MIR204. Identification of a second independent family confirms the existence of a distinct MIR204-associated clinical entity and suggests that the phenotype may also involve congenital glaucoma.
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