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Case Reports
. 2019 Jan 7;19(1):5.
doi: 10.1186/s12886-018-1010-0.

Bilateral NAION and GPIbα gene

Christina S Lim  1   2 , Ajoy Sarkar  3 , Christopher Knapp  4
Affiliations
Case Reports

Bilateral NAION and GPIbα gene

Christina S Lim et al. BMC Ophthalmol. .

Abstract

Background: It has been previously reported that one copy of the variable number tandem repeat (VNTR) B alleles of the GPIbα gene increases the risk of non-arteritic ischaemic optic neuropathy (NAION) and the second eye involvement. This is the first case where the presence of both alleles is associated with bilateral NAION.

Case presentation: A 52-year-old male presented with loss of vision in one eye and was diagnosed with NAION. The following year, he suffered another attack of NAION in the fellow eye. Genetic testing showed that he had both copies of VNTR B alleles of the GPIbα gene.

Conclusions: We report a case of bilateral NAION in the presence of two copies of VNTR B alleles of the GPIbα gene. This may have further implications for the function of platelet glycoproteins.

Keywords: Bilateral optic neuropathy; GPIbα; Platelet glycoprotein.

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Written informed consent was obtained from the patient for the publication of their data and any accompanying images. It is available upon request from the editor.

Competing interests

The authors declare that they have no competing interests.

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Figures

Fig. 1
Fig. 1
Automated Humphrey visual field 24-2 of both eyes
See this image and copyright information in PMC

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