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@ARTICLE{Ihl:875388,
author = {Ihl, Thomas and Kadas, Ella M and Oberwahrenbrock, Timm and
Endres, Matthias and Klockgether, Thomas and Schroeter, Jan
and Brandt, Alexander U and Paul, Friedemann and Minnerop,
Martina and Doss, Sarah and Schmitz-Hübsch, Tanja and
Zimmermann, Hanna G},
title = {{I}nvestigation of {V}isual {S}ystem {I}nvolvement in
{S}pinocerebellar {A}taxia {T}ype 14.},
journal = {The Cerebellum},
volume = {19},
issn = {1473-4230},
address = {London},
publisher = {Dunitz},
reportid = {FZJ-2020-01999},
pages = {469-482},
year = {2020},
abstract = {Spinocerebellar ataxia type 14 (SCA-PRKCG, formerly SCA14)
is a rare, slowly progressive disorder caused by
conventional mutations in protein kinase Cγ (PKCγ). The
disease usually manifests with ataxia, but previous reports
suggested PRKCG variants in retinal pathology. To
systematically investigate for the first time visual
function and retinal morphology in patients with SCA-PRKCG.
Seventeen patients with PRKCG variants and 17 healthy
controls were prospectively recruited, of which 12
genetically confirmed SCA-PRKCG patients and 14 matched
controls were analyzed. We enquired a structured history for
visual symptoms. Vision-related quality of life was obtained
with the National Eye Institute Visual Function
Questionnaire (NEI-VFQ) including the Neuro-Ophthalmic
Supplement (NOS). Participants underwent testing of visual
acuity, contrast sensitivity, visual fields, and retinal
morphology with optical coherence tomography (OCT).
Measurements of the SCA-PRKCG group were analyzed for their
association with clinical parameters (ataxia rating and
disease duration). SCA-PRKCG patients rate their
vision-related quality of life in NEI-VFQ significantly
worse than controls. Furthermore, binocular visual acuity
and contrast sensitivity were worse in SCA-PRKCG patients
compared with controls. Despite this, none of the OCT
measurements differed between groups. NEI-VFQ and NOS
composite scores were related to ataxia severity.
Additionally, we describe one patient with a genetic variant
of uncertain significance in the catalytic domain of PKCγ
who, unlike all confirmed SCA-PRKCG, presented with a
clinically silent epitheliopathy. SCA-PRKCG patients had
reduced binocular vision and vision-related quality of life.
Since no structural retinal damage was found, the
pathomechanism of these findings remains unclear.},
cin = {INM-1},
ddc = {610},
cid = {I:(DE-Juel1)INM-1-20090406},
pnm = {571 - Connectivity and Activity (POF3-571)},
pid = {G:(DE-HGF)POF3-571},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:32338350},
UT = {WOS:000528986700001},
doi = {10.1007/s12311-020-01130-w},
url = {https://juser.fz-juelich.de/record/875388},
}