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Mutations in the gene PDE6C encoding the catalytic subunit of the cone photoreceptor phosphodiesterase in patients with achromatopsia
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2018 (English)In: Human Mutation, ISSN 1059-7794, E-ISSN 1098-1004, Vol. 39, no 10, p. 1366-1371Article in journal (Refereed) Published
Abstract [en]

Biallelic PDE6C mutations are a known cause for rod monochromacy, better known as autosomal recessive achromatopsia (ACHM), and early-onset cone photoreceptor dysfunction. PDE6C encodes the catalytic alpha'-subunit of the cone photoreceptor phosphodiesterase, thereby constituting an essential part of the phototransduction cascade. Here, we present the results of a study comprising 176 genetically preselected patients who remained unsolved after Sanger sequencing of the most frequent genes accounting for ACHM, and were subsequently screened for exonic and splice site variants in PDE6C applying a targeted next generation sequencing approach. We were able to identify potentially pathogenic biallelic variants in 15 index cases. The mutation spectrum comprises 18 different alleles, 15 of which are novel. Our study significantly contributes to the mutation spectrum of PDE6C and allows for a realistic estimate of the prevalence of PDE6C mutations in ACHM since our entire ACHM cohort comprises 1,074 independent families.

Place, publisher, year, edition, pages
John Wiley & Sons, 2018. Vol. 39, no 10, p. 1366-1371
Keywords [en]
achromatopsia, cone phosphodiesterase, mutation spectrum and prevalence, PDE6C
National Category
Medical Genetics
Identifiers
URN: urn:nbn:se:umu:diva-152387DOI: 10.1002/humu.23606ISI: 000444948000008PubMedID: 30080950OAI: oai:DiVA.org:umu-152387DiVA, id: diva2:1253723
Available from: 2018-10-05 Created: 2018-10-05 Last updated: 2018-10-05Bibliographically approved

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Burstedt, MarieGolovleva, Irina

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Audo, IsabelleBurstedt, MarieGolovleva, Irina
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