Zusammenfassung
Hintergrund: Die genetische Veranlagung ist für annähernd 50 % der altersabhängigen Katarakte
verantwortlich. Die Untersuchung familiär vererbter Katarakte bietet eine gute Möglichkeit,
Gene zu identifizieren, die auch bei der altersbedingten Kataraktentwicklung eine
Rolle spielen könnten. Patienten und Methoden: Wir beschreiben den Phänotyp einer Schweizer Familie, in der eine juvenile Katarakt
mit Mikrokornea und renaler Glukosurie assoziiert ist. Bei 11 von 17 Familienmitgliedern
in drei Generationen wurden eine ophthalmologische Untersuchung und eine Urinanalyse
durchgeführt. Bei den restlichen 6 wurden Krankenakten oder Fragebogen ausgewertet.
Ergebnisse: Juvenile, progressive Katarakte entwickelten sich bei 11 Familienmitgliedern. Die
acht von uns untersuchten Kataraktpatienten wiesen bilateral eine Mikrokornea ohne
Mikrophthalmie auf. Sechs davon zeigten eine renale Glukosurie. Die Vererbung ist
autosomal dominant. Schlussfolgerungen: Es konnte ein neues autosomal dominant vererbtes Syndrom, bestehend aus juveniler
Katarakt, Mikrokornea und renaler Glukosurie, definiert werden. Die genetischen Analysen
stehen noch aus.
Abstract
Background: Predisposition is responsible for approximately 50 % of age-related cataracts. Investigation
of inherited forms of cataract provides the opportunity to identify the genes that
may play a role in age-related cataract as well. Patients and Methods: We describe the phenotype of a Swiss family with juvenile cataract, associated with
microcornea and renal glucosuria. 11 of 17 family members in three generations underwent
ophthalmic assessment and urine analysis. Medical records or questionnaires were evaluated
in the remaining six cases. Results: Eleven family members had progressive juvenile cataract. Eight affected members available
for clinical examination had bilateral microcornea, not associated with microphthalmos.
Furthermore, renal glucosuria was demonstrated in six of these persons. The mode of
inheritance is autosomal-dominant. Conclusions: We have defined a new syndrome, consisting of the association of juvenile cataract,
microcornea and renal glucosuria. The pattern of inheritance is autosomal-dominant.
Genotyping is ongoing.
Schlüsselwörter
Syndrom - juvenil - Katarakt - Mikrokornea - renale Glukosurie
Key words
syndrome - juvenile - cataract - microcornea - renal glucosuria
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Dr. med. Kristof Vandekerckhove
Augenklinik, Kantonsspital Luzern
Spitalstraße
6000 Luzern 16, Schweiz
eMail: kristofyavita@yahoo.com