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“Desert” gene (Chr9p21) variants as novel markers for coronary artery disease [Anatol J Cardiol]
Anatol J Cardiol. Ahead of Print: AJC-65392 | DOI: 10.14744/AnatolJCardiol.2017.7730  

“Desert” gene (Chr9p21) variants as novel markers for coronary artery disease

Heba A. Shendy, Sally I. Hassanein, Mohamed Z. Gad
Clinical Biochemistry Unit, Faculty of Pharmacy and Biotechnology, German University in Cairo-Egypt

Objective: Previous reports have denoted to the possible link of Chr9p21 locus to the incidence of coronary artery disease (CAD). The entire core of chr9p21 is covered by “ANRIL” (Antisense noncoding RNA in INK4 Locus) and lies in a region that is free from any coding proteins; therefore, it is called the desert gene. The major objectives of this study were to examine the association of rs10757278 and rs2383206 SNPs on Chr9p21 with the incidence of CAD in the presence and absence of type 2 diabetes (T2D) in Egyptians and to correlate these genetic variants with several disease biomarkers (TC, CRP, and HbA1c).
Methods: The study subjects consisted of 150 subjects; 50 healthy controls and 100 patients that were divided into two groups; CAD patients and CAD T2D patients. The genotyping of SNPs was performed using qPCR.
Results: Genotype distribution for both SNPs were found to be significantly different (p=0.0009 for rs10757278 and p=0.001 for rs2383206) between patients and controls. The allele frequency was also different for rs10757278.
Conclusion: The current study showed that rs10757278/rs2383206-G allele increases the risk for CAD in Egyptians. Moreover, AA variant appeared as a protective genotype. However, SNPs did not noticeably contribute in the elevation of TC, hs-CRP, and HbA1c in non-diabetic and diabetic CAD patients.

Keywords: Desert gene (Chr9p21) polymorphism, Egyptians, coronary artery disease

Corresponding Author: Mohamed Z. Gad, Egypt

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