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WhatIsLCA
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LCA18

PRPH2

Peripherin 2 (RDS); structural glycoprotein of photoreceptor outer segment disc rims. Heterozygous mutations cause RP7 and various macular dystrophies (AD); homozygous mutations cause LCA18 (AR) with earlier onset retinal dystrophy.

Henüz Hedefli Tedavi Yok

Kromozomal Lokus

6p21.1

Kalıtım

Otozomal Resesif

Sıklık

<1% LCA vakalarının

OMIM #608133

Temel Klinik Özellikler

  • 1Homozygous PRPH2 mutations cause LCA (AR), heterozygous cause RP7 (AD)
  • 2Photoreceptor outer segment disc rim structural defect
  • 3Prominent multilobulated central atrophic maculopathy
  • 4Vessel narrowing and peripheral salt-and-pepper changes