IRCCS Multimedica, Via Fantoli 16/15, 20138, Milan, Italy.
BMC Med Genet. 2013 Jan 23;14:11. doi: 10.1186/1471-2350-14-11.
The 9p21.3 locus is strongly associated with the risk of coronary artery disease (CAD) and with type 2 diabetes (T2D). We investigated the association of 9p21.3 variants with severity of CAD (defined by the number of vessel diseased [VD]) in the presence and absence of T2D.
We tested 11 9p21.3-variants for association in a white Italian study (N = 2,908), and carried out replication in 2 independent white populations, a German study (N = 2,028) and a Canadian Study (N=950). SNP association and permutation analyses were conducted.
We identified two 9p21.3-variants, rs4977574 (P < 4×10(-4)) and rs2383207 (P < 1.5×10(-3)) that were associated with severity of CAD in subjects without T2D. Association of rs4977574 with severity of CAD was confirmed in the Canadian Study. Results from subgroup analysis among patients with T2D showed an interaction between rs10738610 and T2D with P = 4.82×10(-2). Further investigation showed that rs10738610 (P < 1.99×10(-2)) was found to be significantly associated with severity of CAD in subjects with T2D.
The 9p21.3 locus is significantly associated with severity of CAD. The number of associations of 9p21.3 variants with severity of CAD is variable to the presence and absence of T2D. In a CAD-susceptible region of 115 kb, there is only one variant associated with the severity of coronary vessel disease in the presence of type 2 diabetes.
9p21.3 基因座与冠心病(CAD)和 2 型糖尿病(T2D)的风险密切相关。我们研究了 9p21.3 变体与 CAD 严重程度(通过病变血管数[VD]定义)之间的关联,同时考虑了 T2D 的存在与否。
我们在一个意大利白人研究(N=2908)中测试了 11 个 9p21.3 变体与 CAD 严重程度的关联,并在两个独立的白人人群中进行了复制,一个是德国研究(N=2028),另一个是加拿大研究(N=950)。进行了 SNP 关联和置换分析。
我们发现了两个 9p21.3 变体,rs4977574(P<4×10(-4))和 rs2383207(P<1.5×10(-3)),它们与无 T2D 的 CAD 严重程度相关。rs4977574 与 CAD 严重程度的关联在加拿大研究中得到了证实。在 T2D 患者的亚组分析结果中,rs10738610 与 T2D 之间存在交互作用,P=4.82×10(-2)。进一步的研究表明,rs10738610(P<1.99×10(-2))在患有 T2D 的人群中与 CAD 严重程度显著相关。
9p21.3 基因座与 CAD 的严重程度显著相关。9p21.3 变体与 CAD 严重程度的关联数量因 T2D 的存在与否而不同。在 115kb 的 CAD 易感区域中,只有一个变体在存在 2 型糖尿病的情况下与冠状动脉疾病的严重程度相关。