VARS2基因单核苷酸多态性和广东汉族女性散发性乳腺癌相关性研究

目的探讨VARS2(valyl-tRNA synthetase 2)基因中单核苷酸多态性位点(single nucleotide polymorphisms,SNP)rs2249464与广东省汉族女性散发性乳腺癌的相关性。方法采用MassARRAY-IPLEX SNP分型技术,以南方医科大学南方医院的216例广东汉族乳腺癌患者及216例同期健康体检者为研究对象,对rs2249464多态性位点进行基因分型,利用χ2检验统计分析病例组和对照组的基因型频率有无差异,利用非条件Logistic回归计算比数比(odds ratio,OR)和95%可信区间(confidence interval,CI)来评价此位点多态性与乳腺癌的相关性。然后进一步将病例组按雌激素受体(estrogen receptor,ER)和孕激素受体(progesterone receptor,PR)免疫组化结果行分层分析。结果 rs2249464位点C/C,C/T,T/T 3种基因型分布在对照组和病例组之间有统计学差异。根据免疫组化情况进一步分层分析结果表明rs2249464的基因型分布在ER阳性/阴性组之间的差异无统计学意义(P>0.05);但在PR阳性/阴性组之间的差异有统计学意义(P<0.05)。结论 VARS2基因rs2249464位点单核苷酸多态性与广东汉族散发性乳腺癌的易感性具有相关性,且携带T/T基因型的患者更容易罹患PR阴性乳腺癌。     

HLA-Ⅰ基因单核苷酸多态性与中国南方汉族女性乳腺癌易感性的相关性研究

目的:探讨位于白细胞抗原复合体基因HLA-Ⅰ区域的17个单核苷酸多态性位点与中国南方汉族女性乳腺癌易感性的相关性。方法:应用Sequenom MassArray iPLEX检测系统对所选位点在267例乳腺癌患者和274例健康对照女性中进行基因分型分析。χ2检验分析各位点基因型分布频率在病例组和对照组中的差异,非条件Logistic回归评价多态性位点与乳腺癌遗传易感性的相关性。另外,根据临床治疗中癌组织ER、PR和HER-2状态进行分层分析。结果:所选位点在中国南方汉族女性中均存在多态性,其中rs9260682遗传多态性与乳腺癌易感性显著相关,与AA基因型相比,AT基因型可增加携带者乳腺癌的患病风险(P=0.04),且与HER-2阴性乳腺癌相关(P=0.04);rs9260734位点多态性分布在病例-对照分组中无显著性差异(P=0.25),但AA基因型与PR阴性乳腺癌相关(P=0.048);其余位点与乳腺癌易感性、ER、PR和HER-2状态均无显著相关性。结论:位于HLA-Ⅰ基因区域的多态性位点rs9260682既与乳腺癌易感性相关,又与HER-2阴性乳腺癌相关,而rs9260734位点的AA基因型与PR阴性乳腺癌相关。     

荧光定量PCR分析FGFR2基因多态性与乳腺癌的相关性研究

目的 探讨成纤维细胞生长因子受体2(fibroblast growth faceor receptor 2,FGFR2)基因rs2981582位点单核苷酸多态性(single necleotide polymorhism,SNP)与乳腺癌易感性之间的关系.方法 建立新的荧光定量PCR检测rs2981582位点SNP,并对936例乳腺癌患者和471例良性乳腺疾病患者进行病例对照研究,分析该位点SNP与乳腺癌发生之间的关系.结果 对照组CC、CT、TT各基因型的例数及基因频率分别为234(49.68%)、181(38.43%)、56(11.89%).乳腺癌组总体各基因型例数及基因频率分别为426(44.56%)、400(41.84%)、130(13.60%),与对照组差异无统计学意义(P=0.183).进一步分层分析发现,雌激素受体(+)组各基因型例数及基因频率分别为189(41.27%)、202(46.12%)、67(14.63%),与对照组比较差异有统计学意义(P=0.035);而雌激素受体(-)组各基因型及基因频率分别为237(47.59%)、198(39.75%)、63(12.65%),与对照组比较差异无统计学意义(P=0.802).结论 FGFR2基因第2内含子SNPrs2981582与雌激素受体阳性乳腺癌的发生有显著关系,同时验证了用本方法检测大批量人群标本的SNP操作简便,检测耗时短,结果特异且费用较为低廉,适合于进行大规模样品的SNP快速测定.     

新疆柯尔克孜族过氧化物酶体增殖物激活受体基因单核苷酸多态性

目的:分析柯尔克孜族健康人群过氧化物酶体增殖物激活受体基因(PPARG)的31个单核苷酸多态性(SNP)位点的遗传多态性;方法:利用Hap Map软件筛选31个SNPs位点,利用质谱检测技术进行多态性检测并根据质谱峰图判读样本目标位点基因型,利用χ~2检验确定筛选的SNP位点是否符合Hardy-Weinberg平衡定律并分析柯尔克孜族与其他民族间基因型和等位基因频率差异。结果:在31个SNP位点中,23个位点的最小等位基因频率MAF≥0.05具有多态性;在23个SNPs中rs1175540、rs17036242、rs2881654、rs2959273、rs2972162、rs4135275、rs709151、rs9310401、rs1801282位点在柯尔克孜族和维吾尔族人群间基因型和等位基因分布频率差异均有统计学意义;rs2292101、rs3856806、rs7626560位点在柯尔克孜族和北京汉族人群、犹他州居民、伊巴丹尼日利亚人群间基因型频率差异有统计学意义;rs3856806、rs4135275、rs6782475、rs7626560位点在柯尔克孜族和北京汉族人群、犹他州居民、伊巴丹尼日利亚人群间等位基因频率差异有统计学意义。结论:PPARG基因23个SNP位点多态性在新疆柯尔克孜人群和不同种族问差异具有统计学意义,这种差异可能是导致某些疾病在不同种族间的发现率和临床表现存在显著不同的因素之一。     

4p14区段和CTLA-4基因多态性与Graves病相关

目的探讨中国安徽蚌埠地区汉族人群4p14区段位点rs6832151和CTLA-4基因4个SNPs(单核苷酸多态性)位点基因多态性与Graves病相关性,和基因-基因交互作用对Graves病的影响。方法提取611例诊断明确的GD患者和644名健康对照者的全基因组DNA,用Taq Man探针技术进行基因分型,使用Plink和Haploview等统计软件分析这些位点与蚌埠地区汉族人群Graves病的相关性。结果 4p14区段位点rs6832151的等位基因、基因型频率在GD组和对照组之间有差异(P0.05),CTLA-4基因区域内rs231804和rs231726两个SNP位点基因型在显性模型下差异显著(P0.05);GMDR模型显示CTLA-4基因内rs10197319、rs231726、rs231804、rs1024161位点和4p14区段内rs6832151位点组成的五阶模型(P=0.001)为最佳模型,CTLA-4基因内rs1024161和rs10197319位点之间上位效应分析结果有差异(P0.05)结论 4p14区段rs6832151,CTLA-4基因区域内rs231804和rs231726位点基因多态性与蚌埠地区汉族人群Graves病的遗传易感性相关;rs6832151(4p14区段)和rs10197319、rs231726、rs231804、rs1024161(CTLA-4基因)5个SNP位点间的基因-基因交互作用与Graves病相关,CTLA-4基因内rs1024161和rs10197319位点之间存在上位效应。     

孕酮受体基因多态性在宁夏回、汉族人群中的分布特征

目的:探讨孕酮受体基因(PGR基因)rs590688、rs1042838、rs11224592三个单核苷酸多态性(SNP)位点在宁夏回、汉族人群的分布特征并与1000Genomes网站上公布的其他群体分布频率进行比较分析。方法:采用TaqMan探针基因分型方法分析宁夏回、汉族人群867例(回族335例,汉族532例)PGR 3个SNPs位点rs590688、rs1042838、rs11224592基因型及等位基因频率的分布情况。结果:宁夏回、汉族人群PGR基因rs590688和rs1042838两个位点基因型及等位基因频率分布差异无统计学意义;rs11224592位点基因型及等位基因频率在宁夏回、汉族人群的分布差异有统计学意义;3个SNP位点的基因型及等位基因分布频率在男、女性别间差异无统计学意义。宁夏人群PGR基因rs590688、rs1042838、rs11224592位点基因型及等位基因分布频率与1000Genomes网站公布的其他群体相比较,rs590688位点与欧洲人群及非洲人群差异均有统计学意义;rs1042838位点与欧洲人群的差异有统计学意义;rs11224592位点与非洲人群的差异有统计学意义。结论:PGR基因rs590688、rs1042838、rs11224592位点基因型及等位基因频率在宁夏回、汉族人群的分布中,rs590688和rs1042838两个位点的分布无民族差异;rs11224592位点的分布具有民族差异;3个SNP位点的分布无性别差异。PGR 3个SNP位点基因型及等位基因频率在不同种族和地区的分布不同。     

HLA-DQB1基因多态性与中国汉族人群系统性红斑狼疮的相关性

目的 探讨HLA-DQB1基因单核苷酸多态性(single nucleotide polymorphisms,SNP)与汉族人群系统性红斑狼疮(systemic lupus erthematosus,SLE)遗传易感性的相关性.方法 通过聚合酶链式反应-连接酶检测反应(polymerase chain reaction-ligase detection reaction,PCR-LDR)技术对908例SLE患者和961例健康对照rs3129716(HLA-DQB1)位点进行基因分型,同时结合临床表现分型,分析该位点与疾病及临床表型的相关性.分型结果用PLINK1.07软件进行统计分析.结果 rs3129716(HLA-DQB1)位点等位基因频率和基因型频率在SLE疾病组和对照组的分布差异无统计学意义(P＞0.05).三种遗传模型下的分析显示,两组间差异无统计学意义(P＞0.05).将SLE患者按血清学指标及临床表现分型,未发现相关性.结论 rs3129716(HLA-DQB1)与中国汉族人群SLE患者遗传易感性不相关.     

广西人群miRNA-107基因多态性分布特征及其与血脂的关系

目的探讨miR-107基因单核苷酸多态性(SNP)位点rs2296616 C/T在广西地区健康人群中的分布特点,对比其在不同种族间基因型及等位基因频率分布的差异,并进一步探讨rs2296616 C/T位点单核苷酸多态性(SNP)与血脂水平的相关性。方法采用多重单碱基延伸SNP分型技术(multiplex SNa Pshot)和DNA测序法,检测372例广西健康人rs2296616 C/T位点的多态性,用7600生化仪检测其血脂相关指标,并用统计学方法分别比较rs2296616C/T位点多态性在各种族人群间的分布差异及不同基因型间的血脂水平差异。结果广西人群miR-107基因rs2296616 C/T位点存在TT(91.1%)和CT(8.9%)两种基因型及T(95.6%)和C(4.4%)两种等位基因。该位点的基因型和等位基因型频率在广西人群不同性别间的比较,差异无统计学意义(P>0.05)。其基因型和等位基因频率与人类基因组单体型图(Hap Map)所公布的欧洲人、日本人、非洲人、印第安人和墨西哥人分型数据相比较,差异均有统计学意义(P<0.05),但与北京汉族人群比较,差异无统计学意义(P>0.05)。rs2296616 C/T位点两种基因型人群血脂之间比较,携带TT基因型人群的高密度脂蛋白胆固醇(HDL-C)与CT组比较,差异具有统计学意义(P<0.05)。结论广西人群miR-107基因rs2296616 C/T位点多态性与其他种族人群之间比较存在不同程度的差异;rs2296616 C/T位点多态性与HDL-C水平高低有关。     

雌激素受体1 基因rs2046210 位点多态性与乳腺癌患病风险性关系初步研究

目的: 探讨雌激素受体1 基因(Estrogen receptor 1,ESR1) 周围区域单核苷酸多态(Single nucleotide polymorphism,SNP)位点rs2046210 与女性乳腺癌发生的相关性。方法:选取114 例乳腺癌患者的组织切片和141 例健康对照者的外周血,抽提基因组DNA,采用Taqman 探针法检测SNP 位点rs2046210 的基因型,计算基因型与基因频率,先检测Hardy-Weinberg 平衡性,然后采用字2 检验进行组间比较。结果:经检测rs2046210 等位位点T、C 及其三种基因型CC、TC、TT 均符合Hardy-Weinberg 平衡性定律,具有群体代表性(字2 值分别为2.78、2.95,v=1,P 均>0.05)。等位位点T、C 在乳腺癌组的分布频率为43.40%、56.60%,在健康组的分布频率为38.30%、61.70%。两组比较差异无统计学意义(P<0.05),该位点等位基因在病例组与对照组的分布无明显差别。多态性位点的三种基因型CC、TC、TT 在乳腺癌的频率分别为35.75%、11.35% 和53.90%,对照组35.96%、22.81%和41.22%,两组间比较差异有显著统计学意义(P<0.05)。进一步比较发现,基因型CC/ TT在两组中分布差异无统计学意义(P>0.05),相对风险比值OR 为1.94(0.92 ~ 4.1,95% CI),基因型CC/ TC 在两组中分布差异无统计学意义(P =0.228>0.05),相对风险比值OR 为0.74(0.43 ~1.28,95%CI),而基因型TT/ TC 在两组中分布差异有显著统计学意义(P =0.008<0.05)。结论:在贵州地区人群,雌激素受体1 基因rs2046210 位点的单核苷酸多态性可能与乳腺癌的遗传易感性相关,特别是rs2046210 TT 基因型可能增加个体患乳腺癌的风险,而CC 基因型降低了乳腺癌的患病风险。     

IL-6基因启动子多态性与乳腺癌风险的关联性

目的:探讨白介素-6(IL-6)基因启动子区-597G/A(rs1800797)、-572C/G(rs1800796)和-174G/C(rs1800795)三个单核苷酸多态性位点(SNP)和乳腺癌易感性的关联性。方法:按照诊断标准,入组女性乳腺癌患者176例及年龄、体重指数等相匹配的健康女性200例。提取外周静脉血DNA,采用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)技术检测IL-6基因启动子区-597G/A、-572C/G和-174 G/C三个SNPs位点的基因型。利用SPSS11.5软件进行χ2检验,比较乳腺癌患者各位点基因型、等位基因频率与健康女性之间的差异,分析各位点多态性与乳腺癌发病风险的关联性。结果:IL-6基因-572C/G位点的基因型及等位基因频率分布在乳腺癌组与健康组之间存在显著性差异(P<0.05),乳腺癌组-572C/G位点的等位基因G频率显著高于健康组(χ2=15.438,P<0.0001,OR=2.017,95%CI=1.417～2.870)。结论:IL-6基因-572C/G位点多态性与乳腺癌易感性相关联,携带有-572G/C多态性位点G等位基因的女性罹患乳腺癌的风险要高于非携带女性。     

ATM基因rs227060位点单核苷酸多态性与肺癌易感性的相关性

目的:探讨共济失调毛细血管扩张症突变基因(ataxia telangiectasia mutated,ATM)rs227060位点单核苷酸多态性(single nucleotide polymorphisms,SNPs)与肺癌易感性之间的相关性.方法:采用聚合酶链反应-SNP敏感性分子开关方法,检测225例肺癌患者和128例健康体检者ATM基因rs227060多态位点等位基因以及基因型频率分布特点;并应用非条件Logistic回归法统计分析rs227060单核苷酸多态性与肺癌的相关性.结果:rs227060多态位点共检测出CC,CT,TT三种基因型和C,T两种等位基因,其在肺癌组与对照组的基因型分布频率为:CC基因型17.3％与29.7％、CT基因型61,4％与59.3％、TT基因型21.3％与11％,两组间基因型频率和等位基因频率分布差异均有统计学意义(P＜0.05).在对ATM rs227060基因型的多态性分析过程中发现:吸烟史在肺癌组与对照组相比差异无统计学意义(P＞0.05),而年龄、性别、肿瘤家族史在肺癌组与对照组相比差异均有统计学意义(P＜0.05);且以CC基因型作为对照,携带TT基因型的个体患肺癌的风险是携带CT基因型个体的3.49倍(OR=1.829;95％CI:1.045～3.199).结论:ATM基因rs227060位点单核苷酸多态性与肺癌易感性存在相关性,且携带TT基因型可增加肺癌的发病风险.     

Genetic polymorphisms in AURKA and BRCA1 are associated with breast cancer susceptibility in a Chinese Han population

Centrosome defects can result in aneuploidy and genomic instability, and have important implications for breast cancer development. The Aurora-A and BRCA1 proteins interact and both are strongly involved in centrosome regulation. Genetic variants in these two genes may have an effect on breast cancer development. Here, we report a comprehensive single nucleotide polymorphism (SNP) and haplotype-tagging association study on these two genes in 1334 breast cancer cases and 1568 unaffected controls among the Chinese Han population. Apart from a missense SNP, rs2273535 (Phe31Ile), and a probable risk SNP, rs2064863, six htSNPs were analysed in three high-LD blocks of AURKA spanning from 10 kb upstream to 2 kb downstream of AURKA. For BRCA1, six htSNPs were analysed in a large high-LD region covering 98 kb (10 kb was extended to each end of BRCA1). The results showed that four SNPs in AURKA (data in recessive model, rs2273535: OR = 2.19, 95% CI = 1.03-4.66, p = 0.0422; rs2298016: OR = 0.38, 95% CI = 0.18-0.82, p = 0.0141; rs6024836: OR = 1.54, 95% CI = 1.18-2.00, p = 0.0014; rs10485805: OR = 0.68, 95% CI = 0.47-0.98, p = 0.0380) and one SNP in BRCA1 (rs3737559, dominant model OR = 1.35, 95% CI = 1.11-1.64, p = 0.0030) were associated with breast cancer susceptibility. After correction for multiple comparisons (FDR = 0.05), only rs6024836 and rs3737559 remained significant. Two haplotypes (CC of block 2, OR = 20.74, 95% CI = 4.35-98.88, p = 0.0001; GG of block 3, OR = 1.32, 95% CI = 1.12-1.56, p = 0.0010) and one diplotype (AG-GG of block 3, OR = 1.63, 95% CI = 1.18-2.26, p = 0.0031) within AURKA showed strong associations with breast cancer risk. One haplotype of BRCA1 (CTGTTG, OR = 1.30, 95% CI = 1.06-1.59, p = 0.0118) was also associated with breast cancer risk. However, women harbouring both at-risk genotypes of Aurora-A and BRCA1 were at a slightly increased risk compared with those harbouring either at-risk variant alone. Common genetic variants in the AURKA and BRCA1 genes may contribute to breast cancer development.     

基质金属蛋白酶1基因多态性与肺癌易感性的关联研究

目的研究我国西北汉族人群基质金属蛋白酶（matrix metalloproteinase 1，MMP1）基因-1607（1G→2G）多态与肺癌发生风险的关系。方法应用聚合酶链反应-限制性片段长度多态性分析的方法，检测了150例肺癌患者和200名正常对照者删1G→2G多态的基因型，比较不同基因型与肺癌发生风险的关系。结果肺癌组2G／2G基因型频率要高于对照组（X^2=5．896，P〈0．05），2G／2G基因型者患肺癌的风险是1G／2G和1G／1G基因型的1．77倍（OR=1．77；95％CI：1．12—2．91）。吸烟者中2G／2G基因型发生肺癌的风险是1G／2G和1G／1G基因型的3．20倍（OR=3．20；95％CI：1．50～6．82）。结论我国西北汉族人群MMP1基因-1607（1G→2G）多态性与肺癌易感性有关，2G／2G基因型可以增加肺癌发生风险。     

Association of ALOX5AP gene single nucleotide polymorphisms and cerebral infarction in the Han population of northern China

ABSTRACT: BACKGROUND: To explore the association of ALOX5AP single nucleotide polymorphisms (SNPs) and haplotype with the occurrence of cerebral infarction in the Han population of northern China. METHODS: Blood samples were collected from 236 patients of Han ancestry with a history of cerebral infarction and 219 healthy subjects of Han ancestry with no history of cerebral infarction or cardiovascular disease. Applied Biosystems(R) TaqMan(R) SNP Genotyping Assays for SNP genotyping were used to determine the genotypes of 7 ALOX5AP SNP alleles (rs4073259, rs4769874, rs9315050, rs9551963, rs10507391, rs9579646, and rs4147064). RESULTS: One SNP allele (A) of rs4073259 was significantly associated with development of cerebral infarction (P = 0.049). In comparison to control groups, haplotype rs9315050&rs9551963 AAAC [OR (95 % CI) =1.53 (1.02-2.29)], and genotypes rs4147064 CT [OR (95 % CI) =1.872 (1.082-3.241)], and rs9551963 AC [OR (95 % CI) = 2.015 (1.165-3.484)] increased the risk of cerebral infarction in patients with hypertension. Genotype rs9579646 GG [OR (95 % CI) = 2.926 (1.18-7.251)] increased the risk of, while rs4073259 GG [OR (95 % CI) = 0.381 (0.157-0.922)] decreased the risk of cerebral infarction in patients with diabetes. CONCLUSION: These results suggest the ALOX5AP SNP A allele in rs4073259 and genotype rs9579646 GG, rs9551963 AC, and haplotype rs9315050 & rs9551963 AAAC were associated with an increased risk of ischemic stroke in the Han population, while rs4073259 GG was associated with a decreased risk.     

Sex-specific association of the SPTY2D1 rs7934205 polymorphism and serum lipid levels

The objective of the present study was to detect the association of the rs7934205 single nucleotide polymorphism (SNP) near the Suppressor of Ty, domain containing 1 gene (SPTY2D1) and serum lipid levels between males and females in the Mulao and Han populations. Genotyping of SPTY2D1 rs7934205 SNP was performed in 933 of Mulao and 865 of Han participants using polymerase chain reaction and restriction fragment length polymorphism. The T allele frequency was different between Mulao males and females (23.2% vs. 27.9%, P = 0.018). The genotype and allele frequencies were also different between Han males and females (P = 0.020 and P = 0.004; respectively). Serum levels of apolipoprotein (Apo) A1 in Mulao males; and total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), ApoA1 and ApoB in Mulao females were different between the CC and CT/TT genotypes (P < 0.05). Serum TC, ApoB levels in Han males, and ApoB levels in Han females were different between the CC and CT/TT genotypes (P < 0.05). The subjects with CT/TT genotype in both Mulao and Han males and females have more favorable lipid profiles than those with CC genotype. These findings suggest that the association between the SPTY2D1 rs7934205 SNP and serum lipid levels might have ethnic- and/or sex-specificity.     

DVL2基因多态性与中国汉族人群先天性脊柱侧凸遗传易感性的关联研究

背景：近20年来小鼠的分子胚胎学研究进展获得了大量关于脊椎发育的分子信息,用同线性分析法确立先天性脊柱侧凸的候选基因已成为可能。 目的：通过候选基因DVL2上关键单核苷酸多态性位点的筛查,探索DVL2与中国汉族人群先天性脊柱侧凸及其不同临床表型之间的关联。 方法：采用病例-对照研究,入选127例中国汉族先天性脊柱侧凸患者和127例对照组。根据国际人类基因组单体型图计划提供的基因型数据,应用Haploview 4.1软件选取DVL2的标签和功能单核苷酸多态性。根据椎体畸形特点、畸形部位、畸形受累程度、有无合并肋骨畸形和椎管内畸形将病例组进一步分为不同临床表型。对所有样本应用SNPstream UHT Genotyping系统对所选单核苷酸多态性位点进行基因型鉴定;进一步进行基于基因型/等位基因频率的关联分析,并用Haploview 4.1软件分析对照组单核苷酸多态性位点间是否存在连锁不平衡。 结果与结论：共筛选5个位点：单核苷酸多态性1(rs2074222)、单核苷酸多态性2(rs222837)、单核苷酸多态性3(rs222835)、单核苷酸多态性4(rs10671352)和单核苷酸多态性5(rs222836),其基因型分布在病例和对照组中均符合Hardy-Weinberg平衡;5个位点处于完全连锁不平衡状态;5个位点的基因型/等位基因/单倍体型与先天性脊柱侧凸的发生风险之间不存在相关性。在进一步与先天性脊柱侧凸临床表型的关联分析中没有发现阳性位点。提示在中国汉族人群中DVL2基因可能不是引起先天性脊柱侧凸及其不同临床表型的主要因素,有待于进一步深入研究。     

Scavenger Receptor Class B Type 1 Gene rs5888 Single Nucleotide Polymorphism and the Risk of Coronary Artery Disease and Ischemic Stroke: A Case-Control Study

Background: Our previous studies have showed that the rs5888 single nucleotide polymorphism (SNP) in Scavenger receptor class B type 1 (SCARB1) gene is associated with serum lipid levels in the general Chinese populations. The present study was undertaken to detect the associations between rs5888 SNP and the risk of coronary artery disease (CAD) and ischemic stroke (IS).Methods: A total of 1,716 unrelated subjects (CAD, 601; IS, 533; and healthy controls, 582) were included in this study. Genotyping of the rs5888 SNP were determined by polymerase chain reaction and restriction fragment length polymorphism.Results: The genotypic frequencies of SCARB1 rs5888 SNP were different between CAD patients and controls, the subjects with TT genotype had high risk of CAD (OR = 1.76, P = 0.038 for TT vs. CC; and OR = 1.75, P = 0.036 for TT vs. CC/CT). There was no significant association between genotypes and the risk of IS. Further analysis showed that the subjects with TT genotype in the total population had lower levels of high-density lipoprotein cholesterol than the subjects with CC/CT genotypes (P < 0.05), the subjects with TT genotype in controls but not in CAD or IS patients had higher levels of serum LDL-C and ApoB than those with CC genotype (P < 0.05 for each).Conclusions: The present study suggests that the SCARB1 rs5888 SNP influences serum lipid levels, and is associated with the risk of CAD.