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Open Access 01-12-2009 | Research article

Evaluation of nine candidate genes in patients with normal tension glaucoma: a case control study

Authors: Christiane Wolf, Eugen Gramer, Bertram Müller-Myhsok, Francesca Pasutto, Eva Reinthal, Bernd Wissinger, Nicole Weisschuh

Published in: BMC Medical Genetics | Issue 1/2009

Abstract

Background

Normal tension glaucoma is a major subtype of glaucoma, associated with intraocular pressures that are within the statistically normal range of the population. Monogenic forms following classical inheritance patterns are rare in this glaucoma subtype. Instead, multigenic inheritance is proposed for the majority of cases. The present study tested common sequence variants in candidate genes for association with normal tension glaucoma in the German population.

Methods

Ninety-eight SNPs were selected to tag the common genetic variation in nine genes, namely OPTN (optineurin), RDX (radixin), SNX16 (sorting nexin 16), OPA1 (optic atrophy 1), MFN1 (mitofusin 1), MFN2 (mitofusin 2), PARL (presenilin associated, rhomboid-like), SOD2 (superoxide dismutase 2, mitochondrial) and CYP1B1 (cytochrome P450, family 1, subfamily B, polypeptide 1). These SNPs were genotyped in 285 cases and 282 fully evaluated matched controls. Statistical analyses comprised single polymorphism association as well as haplogroup based association testing.

Results

Results suggested that genetic variation in five of the candidate genes (RDX, SNX16, OPA1, SOD2 and CYP1B1) is unlikely to confer major risk to develop normal tension glaucoma in the German population. In contrast, we observed a trend towards association of single SNPs in OPTN, MFN1, MFN2 and PARL. The SNPs of OPTN, MFN2 and PARL were further analysed by multimarker haplotype-based association testing. We identified a risk haplotype being more frequent in patients and a vice versa situation for the complementary protective haplotype in each of the three genes.

Conclusion

Common variants of OPTN, PARL, MFN1 and MFN2 should be analysed in other cohorts to confirm their involvement in normal tension glaucoma.

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The pre-publication history for this paper can be accessed here:http://www.biomedcentral.com/1471-2350/10/91/prepub

Title: Evaluation of nine candidate genes in patients with normal tension glaucoma: a case control study
Authors: Christiane Wolf
Eugen Gramer
Bertram Müller-Myhsok
Francesca Pasutto
Eva Reinthal
Bernd Wissinger
Nicole Weisschuh
Publication date: 01-12-2009
Publisher: BioMed Central
Published in: BMC Medical Genetics / Issue 1/2009
Electronic ISSN: 1471-2350
DOI: https://doi.org/10.1186/1471-2350-10-91

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Springer Medicine

Evaluation of nine candidate genes in patients with normal tension glaucoma: a case control study

Abstract

Background

Methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Methods

Results

Conclusion

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