We investigated Saudi patients with familial and sporadic Keratoconus for mutations in the Superoxide dismutase 1, soluble (SOD1) gene. We sequenced the entire coding region, exon-intron boundaries and intron 2 encompassing a 7-bp deletion in clinically confirmed Keratoconus patients (n = 55) and 100 ethnically matched healthy controls. All cases and controls were unrelated. Sequencing the SOD1 gene revealed the presence of four nucleotide changes and all were non-coding. Those were g.12035 C > A; g.13978 T > A; g.12037 G > A and g.11931 A > C with similar frequencies in patients and controls. All four sequence changes were benign polymorphisms with no apparent clinical significance. Additionally, the 7-bp deletion in intro2 reported previously, were not detected in any of our Keratocnus cohort. In our Keratoconus cohort, no pathogenic SOD1 mutation(s) was identified.
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Letter to the Editor
Analysis of the SOD1 Gene in Keratoconus Patients from Saudi Arabia
Abdulrahman M. Al-Muammar Anterior Segment Unit, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia, , Hatem Kalantan Anterior Segment Unit, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia, , Taif Anwar Azad Ophthalmic Genetics Laboratory, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia, and , Tahira Sultan Ophthalmic Genetics Laboratory, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia, and & Khaled K. Abu-Amero Ophthalmic Genetics Laboratory, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia, and ; Department of Opthalmology, College of Medicine, University of Florida, Jacksonville, FL, USACorrespondenceabuamero@gmail.com
Abdulrahman M. Al-Muammar Anterior Segment Unit, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia, , Hatem Kalantan Anterior Segment Unit, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia, , Taif Anwar Azad Ophthalmic Genetics Laboratory, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia, and , Tahira Sultan Ophthalmic Genetics Laboratory, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia, and & Khaled K. Abu-Amero Ophthalmic Genetics Laboratory, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia, and ; Department of Opthalmology, College of Medicine, University of Florida, Jacksonville, FL, USACorrespondenceabuamero@gmail.com
Pages 373-375
Received 09 Jan 2014
Accepted 25 Jan 2014
Published online: 19 Feb 2014