PD-1基因多态性与肺结核易感性的关系

目的探讨PD-1基因多态性与肺结核发病风险以及临床特征的相关性。方法采用PCRRFLP分析方法,检测262例肺结核患者和255例健康志愿者基因组DNA中PD-1基因SNP位点rs2227981和rs2227982基因型和等位基因频率的分布情况,分析PD-1基因多态性与肺结核易感性的关系;并收集了肺结核患者的临床资料,考察PD-1基因多态性与肺结核临床特征的相关性。结果对照组rs2227981和rs2227982基因型和等位基因频率的分布符合Hardy-Weinberg遗传平衡定律;rs2227981位点T等位基因(OR=2.721,95%CI:2.003~3.697,0.001)、rs2227982位点C等位基因(OR=1.614,95%CI:1.262~2.064,0.001)均与肺结核易感性相关;与rs2227981 CC基因型相比,携带PD-1 rs2227981 CT或TT基因型者具有更高的肺结核发病风险(OR=2.937,95%CI:2.018~4.274,0.001),且患者病灶范围较大(=0.009),痰菌阳性率较高(0.001);与rs2227982 TT基因型相比,携带rs2227982 TC或CC基因型者具有更高的肺结核发病风险(OR=1.706,95%CI:1.187~2.452,=0.004),且患者结核空洞的发生率较高(=0.021)。结论 PD-1基因rs2227981和rs2227982位点SNP多态性与肺结核易感性及临床特征相关。     

GNB3、ADD1和ADRB2基因多态性可能与高原肺水肿发病无关

目 的 探讨G蛋白β3亚基（GNB3）、α-内收蛋白（ADD1）及β2肾上腺素受体（ADRB2）基因多态位点与高原肺水肿的易感相关性。方 法 用PCR-RFLP和AS-PCR法检测148例高原肺水肿患者和158例正常对照者的GNB3基因rs5443、ADD1基因rs4961和ADRB2基因rs1042713位点，进行基因关联研究。结 果 （1）高原肺水肿患者GNB3基因rs5443、ADD1基因rs4961和ADRB2基因rs1042713位点的3种基因型频率分布与对照组间无差异；（2）对rs5443、rs4961和rs1042713位点进行单倍型分析，8种单倍型组合（最小基因频率>1%）在两组间的频率分布无差异。（3）联合基因型分析亦未发现有意义的基因型组合。结 论 GNB3基因rs5443、ADD1基因rs4961和ADRB2基因rs1042713位点可能不参与中国汉族高原肺水肿的发病。     

mTORC1基因多态性位点与中国新疆散发性结直肠癌发病风险的关联性北大核心CSCD

目的筛查及分析PI3K/AKT/mTOR信号转导通路中mTORC1基因多态性位点与结直肠癌发病风险的相关性及其临床意义。方法收集2000年至2013年间新疆医科大学第一附属医院665例原发性结直肠癌患者和695名健康对照,通过病例－对照研究,运用Logistic回归分析mTORC1相关基因中10个多态位点（mTOR：rs1034528,rs2295080;Raptor：rs1062935,rs3751934;mLST8：rs3160,rs26865;DEPTOR：rs2271900,rs4871827;AKT1S1：rs2290774,rs2353005）与结直肠癌易感性的关系。结果mTORC1相关基因与结直肠癌发病风险相关,并与人群的年龄、性别、吸烟状态及体重指数相关。其中,mLST8 rs26865 AA基因型在≤68岁（OR＝0.64,95%CI＝0.43-0.96,P＝0.031）、女性（OR＝0.61,95%CI＝0.38-0.99,P＝0.046）、无吸烟人群（OR＝0.55,95%CI＝0.35-0.87,P＝0.010）中均能降低结直肠癌的发病风险;mTOR rs1034528 CC基因型在〉68岁的人群中提高了结直肠癌的发病风险（OR＝3.34,95%CI＝1.12-9.91,P＝0.030）、Raptor rs3751934 CA/AA基因型在体重指数〉25 kg/m^2的人群中能降低结直肠癌的发病风险（OR＝0.68,95%CI＝0.47-0.98,P＝0.038）、AKT1S1 rs2290774 CC基因型在不吸烟的人群中能降低结直肠癌的发病风险（OR＝0.67,95%CI＝0.45-0.99,P＝0.048）。mTORC1低风险基因型叠加与结直肠癌发病风险相关性分析结果显示,同时携带两个以上低风险基因型的人群要比没有或只携带1个低风险基因型的人群患结直肠癌的风险要低（OR＝0.74,95%CI＝0.58-0.95,P＝0.017）,这在≤68岁、男性、体重指数〉25 kg/m^2及不吸烟人群中尤其明显。mLST8 rs26865基因型与mLST8及下游蛋白4EBP1和p70S6K的表达无相关性。结论mTORC1相关基因多态位点与中国新疆散发性结直肠癌的发生具有一定的相关性,但相关效应较低,尚需在大样本量的、多中心、不同种族的结直肠癌研究中加以验证。     

抑郁症与cAMP反应元件结合蛋白基因的关联研究

目的 探讨cAMP反应元件结合蛋白(cyclic adenosine monophosphate response elementbinding protein,CREB1)基因与抑郁症的关联关系.方法 采用聚合酶链反应-限制性片段长度多态性方法检测105个抑郁症核心家系CREB1基因上单核苷酸多态性(single nucleotide polymorphisms,SNP)rs10932201和rs6740584的等位基因与基因型分布情况.进行单位点及单倍型的传递/不平衡检验(transmission disequilibrium test,TDT).结果 CREB1基因上SNP位点rs10932201和rs6740584与抑郁症均无显著性关联,TDT χ2 值分别为2.700(P=0.1004)和0.458(P=0.4986),差异均无统计学意义.单倍型TDT分析结果显示由rs10932201和rs6740584构成的单倍型与抑郁症存在显著性关联,差异有统计学意义(总χ2=23.458,df=3,P=0.00003241).单个单倍型A-C和A-T与抑郁症也均有显著性关联,差异有统计学意义(χ2 值分别为5.405和13.623,P值分别为0.020和0.00022).结论 CREB1基因上SNP位点rs10932201和rs6740584与抑郁症均无显著性关联,但由这2个SNP位点构成的单倍型与抑郁症存在显著性关联,提示CREB1基因rs10932201-rs6740584单倍型可能在抑郁症的遗传学发病机制中具有重要作用.     

α1-抗胰蛋白酶与维吾尔族慢性阻塞性肺疾病的相关性分析

目的 探讨α1-抗胰蛋白酶水平以及其基因位点rs1243166多态性与喀什地区维吾尔族慢性阻塞性肺疾病的关系。方法 采集429例维吾尔族人群血标本,其中227例COPD患者作为病例组,202例健康维吾尔族体检者作为对照组,利用α1-抗胰蛋白酶检测试剂盒检测α1-抗胰蛋白酶水平,MassARRAYiPLEX单碱基延伸技术进行基因检测,对最终检测结果进行?字2检验,采用单因素的logistic回归对不同基因型进行危险因素分析。结果 病例组和对照组α1-抗胰蛋白酶水平,差异有统计学意义（P<0.05）,Rs1243166位点基因型和等位基因频率在病例组和对照组中分布比较,有统计学意义（P<0.05）。人群携带rs1243166-GG基因型患COPD的风险是携带rs1243166-AA基因型的 2.039倍,携带rs1243166-GA基因型的人群患COPD的风险是携带rs1243166-AA基因型人群的1.875倍。结论 α1-抗胰蛋白酶与COPD相关, rs1243166基因位点与COPD的易感性有关,人群携带rs1243166-GG基因型和rs1243166-GA基因型有较高的患病风险。     

5''HOXD基因与单纯性马蹄内翻足的相关性分析

目的检测HOXD10、HOXD12、HOXD13基因内4个已知单核苷酸多态（single nueleotide polymorphisins,SNP）rs2593778、rs847154、rs847151、rs13392701在单纯性马蹄内翻足核心家系中的分布情况，分析各个SNP位点及所构成单倍型与单纯性马蹄内翻足的相关性。方法应用限制性片段长度多态性技术结合测序，分析84个单纯性马蹄内翻足核心家系4个SNP位点基因型；应用ETDT软件统计分析各SNP位点基因型与单纯性马蹄内翻足的相关性；应用TRANSMIT软件构建单倍型并统计分析单倍型频率是否存在差异。结果位于HOXD12基因5’侧翼序列的SNP位点rs847154和位于HOXD13第1外显子的SNP位点rs13392701在单纯性马蹄内翻核心家系中存在传递不平衡（P〈0．05）；位于HOXD12基因第1外显子的SNP位点rs847151未检测到多态；位于HOXD10第1外显子的SNP位点rs2593778经ETDT分析无统计学意义。结论HOXD12基因5’侧翼序列的SNP位点rs847154和位于HOXD13第1外显子的SNP位点rs13392701与单纯性先天性马蹄内翻足有明显的相关性，提示HOXD12、HOXD13可能是单纯性马蹄内翻足重要的易感基因。     

神经型烟碱乙酰胆碱受体α7亚单位基因多态性与精神分裂症的传递不平衡研究

目的 探讨神经型烟碱乙酰胆碱受体α7亚单位基因(neuronal nicotinic acetyleholine receptor α7 subunit gene,CHRNA7)多态性与精神分裂症的关系.方法 应用聚合酶链反应及聚丙烯酰胺凝胶芯片技术检测129个精神分裂症先证者核心家系CHRNA7基因的rs2337980、rs1909884、rs883473三个单核苷酸多态性,并采用基于单倍型的单倍型相对风险检验(haplotype relative risk,HHRR)、传递不平衡检验(transmission disequilibrium test,TDT)及单倍型分析进行统计.结果 (1)HHRR分析结果显示rs2337980位点精神分裂症患者组与虚拟对照组之间等位基因频率差异有统计学意义(P=0.017);(2)TDT分析发现,rs2337980位点与精神分裂症之间可能存在传递不平衡,杂合子父母过多的传递等位基因C给患病子女(P=0.021).(3)单倍型分析发现,rs2337980、rsl909884及rs2337980、rsl909884、rs883473组成的单倍型与精神分裂症有显著相关(总体P=0.034;glohal P=0.027),其中T-C,T-C-T两个单倍型与精神分裂症可能存在传递不平衡.结论 CHRNA7 基因多态性可能与精神分裂症存在关联,rs2337980的变异等位基因T可能是精神分裂症的保护性因子.     

DIO2基因单核苷酸多态性与精神发育迟滞相关性研究

目的探讨DIO2基因多态性及单倍型与精神发育迟滞的相关关系。方法本研究以344个汉族精神发育迟滞患者及其亲属组成的家系为研究对象．在DIO2上选择了3个合适的SNPs作为标记．利用PCR—SSCP和PCR—RFLP方法完成基因分型。应用FBAT软件对多态位点及可能组成的单倍型与精神发育迟滞的关系进行分析。结果单个位点家系关联性分析结果提示：rs225015、rs225014和rs225012位点各等位基因从亲代传递给患病子代没有观察到显著性（P〉0．05）。多态性位点间的连锁不平衡检验显示：3个位点rs225015、rs225014和rs225012均具有较高的连锁不平衡（D’〉0．8）。单倍型分析结果显示：3个位点构成的单体型GTG在附加遗传模型（Z=2．226,P=0．026019）和隐性遗传模型（Z=2．651,P=0．008023）与MR相关。结论DIO2基因可能与精神发育迟滞的易感性有关。     

腺苷A1受体基因与精神分裂症的遗传关联分析

目的探讨腺苷A1受体基因(ADORA1)多态性与精神分裂症关联的关系。方法选取ADORA1基因上rs3766558位点采用聚合酶链式反应—限制性片段长度多态性(PCR-RFLP)方法对119例精神分裂症病例,包括88例正常对照组ADORA1基因分型进行检测和进行遗传关联分析。结果病例组和正常对照组基因型分布符合Hard-Weinberg平衡法则,rs3766558单倍型相对风险分析,结果为χ2=6.301,P=0.026和χ2=4.771,P=0.029。差异到达显著(P<0.05)。结论漳州地区人群ADORA1基因rs3766558与精神分裂症存在关联。     

ESR1基因单核苷酸多态性及单倍型与精神分裂症的关联研究

目的 探索雌激素受体1 (estrogen receptor 1,ESR1)基因rs2234693、rs9340799和rs3798759位点单核苷酸多念性(single nucleotide polymorphisms,SNPs)及其单倍型与精神分裂症(schizophrenia,SZ)发病之间的相关性.方法 应用聚合酶链反应-限制性片段长度多态性技术对333例SZ患者和315名正常对照rs2234693、rs9340799和rs3798759位点进行基因分型,应用x2检验对SZ组和对照组等位基因、基因型和单倍型频率进行分析.结果 rs2234693、rs9340799位点两组间基因型频率及等位基因分布差异均无统计学意义(P＞0.05).SZ组rs3798759位点GG基因型频率及G等位基因频率均高于健康对照组(P＜0.01).性别分层分析提示,女性SZ患者rs3798759位点TG、GG基因型频率及G等位基因频率均高于健康女性(P＜0.05).单倍型C-A-G和C-G-G在SZ组的分布频率高于对照组(P＜0.05).结论 rs3798759位点突变可能为女性精神分裂症发生的风险因子,C-A-G和C-G-G单倍型可能为精神分裂症的遗传风险单倍型.     

Association of single nucleotide polymorphisms of CDH13 gene with metabolic syndrome among ethnic Han ChineseCSCD

Objective: To assessthe association of single nucleotide polymorphisms (SNPs) of the T-cadherin (CDH13) gene with metabolic syndrome (MS) among ethnic Han Chinese. Methods: Genotypes of 6 SNPs(rsll646213, rsl2596316, rs3865188, rsl2444338, rsl2051272, and rs7195409) of the CDH13 gene among 453 patients with MS and 526 controls were determined with a TaqMan method, and their association with MS was assessed. Results: For 5 SNPs (rsll646213, rs3865188, rsl2444338, rsl2051272, and rs7195409), no difference was found in allelic and genotypic frequencies of the CDH13 gene between the two groups. Comparing with rsl2596316 (AA+GG) genotype, rsl2596316 AG genotype has significantly increased the risk of MS(P = 0.01, OR=1.38, 95%CI: 1.07-1.78), though no association was found between particular alleles of the rsl2596316 with MS. There was no difference in the frequencies of rsll646213-rsl2596316-rs3865188-rsl2444338-rsl2051272 haplotype between the two groups(P>0.05). Conclusion: No association was found between the five SNPs (rsll646213, rs3865188, rsl2444338, rsl2051272 and rs7195409) of the CDH13 gene with the MS, while the rsl2596316AG genotype of the CDH13 gene is associated with the susceptibility to MS among ethnic Han Chinese. © 2018 West China University of Medical Sciences. All rights reserved.     

Association of single nucleotide polymorphisms of LEPR gene with essential hypertension among ethnic Mongolian and Han Chinese from Inner Mongolia regionCSCD

Objective: To assess the association of single nucleotide polymorphisms (SNPs) of leptin receptor (LEPR) gene with essential hypertension (EH) and body mass index (BMI) among ethnic Mongolian and Han Chinese from Inner Mongolia region. Methods: In total 411 Han Chinese patients with EH and 480 healthy controls, together with 658 Mongolian patients with EH and 403 healthy controls, were collected. The SNPs of the LEPR gene were determined with ligase detection reaction (LDR). Logistic regression was used to analyze the association of the polymorphisms of each locus with EH and BMI. MDR software was used to analyze the interaction between above loci and environmental factors. Results: Genotypic frequencies of LEPR gene rs7555955, rsll37100 and rsll37101 loci had differed significantly among ethnic Hans with EH and the control group (All P <0. 05). While those of rs7555955, rsl805094, rsll37100, rsll579567, rsl805134 and rs6669354 loci had differed significantly among ethnic Mongolians with EH and the control group (All P<0. 05). After adjustment for confounders, logistic regression analysis indicated that age(Oi=2. 97, 95%CJ: 1. 94-3. 99), BMI (Ofl = 3. 93, 95%CI:2. 91-5. 96), and rsll37101 (AA) (Oi=3. 96, 95%CI-.l. 32-11. 90) were independent risk factors for EH among ethnic Hans, while age (Oi=2. 99, 95%C7:2. 98-4. 57), BMI (Oi = 3. 03, 95%CI-. 1. 05-1. 27), rs7555955 (AG, AA) (OR = 12.12, 95%CI:2.80-52.43) OP = 6.35, 95%CI: 1. 44-27. 94), and rs7555955 (GG) were independent risk factors for EH among ethnic Mongolians (P <0. 05). Conclusion: Age and BMI are independent risk factors for EH in both ethnic Han and Mongolian Chinese. rsll37101 locus is associated with EH among ethnic Hans, while rs7555955 locus is associated with EH among ethnic Mongolians. © 2018 MeDitorial Ltd. All rights reserved.     

Association of coagulation factor V gene polymorphism with unexplained recurrent spontaneous abortion among ethnic Hans from Wenzhou areaCSCD

Objective: To assess the association of coagulation factor V gene polymorphisms with unexplained recurrent spontaneous abortion (URSA) among ethnic Han Chinese from Wenzhou area. Methods: Ninety-six patients with URSA and 103 females with a history of normal pregnancy were recruited. Genotypes of coagulation factor V gene were determined through target sequence capture and high-throughput sequencing. The results were confirmed with a MassARRAY system. Allelic and genotypic frequencies between the two groups were compared. Results: Nineteen single nucleotide polymorphism (SNPs), except coagulation factor V Leiden, were identified in the two groups. The frequencies of rs9287090 allele A, rsl046712 allele T and rsl800594 allele G of the URSA group were lower than those of the control group (6. 77% to. 16.50%, 3.12% to. 13.11%, 10.94% to. 18.45%, respectively). After Bonferroni and false discovery rate correction, rs9287090 and rsl046712 were significantly associated with URSA (corrected P<0. 05). Although genotypic distribution of rs9287090 and rsl046712 also differed between the two groups, the corrected P value showed no significance (corrected P>0. 05). A complete linkage disequilibrium (r 2 = l, D' = l) of rs6022 and rs6029 was observed for the haplotype block rs6022-rs6029-rs6028. The frequencies of rs6022 allele A and rs6029 allele T were higher in the URSA group with corrected insignificance (75. 00% vs. 65. 53%, corrected P >0. 05). Furthermore, significantly more A-T-T haplotype was found in the URSA group (75. 00% vs. 65. 50%, OP = 1. 578, 95%C7:1. 021-2. 438, X 2 =4. 248, P<0. 05). Conclusion: The decreased rate of rs9287090 allele A, rsl046712 allele T, and rsl800594 allele G may contribute to the susceptibility to URSA among ethnic Han Chinese from Wenzhou area. The rs6022 allele A and rs6029 allele T may also predispose to URSA. © 2018 MeDitorial Ltd. All rights reserved.     

Pooled analysis of genetic variation at chromosome 8q24 and colorectal neoplasia risk

Several different genetic variants at chromosome 8q24 have been related to prostate, breast and colorectal cancer risk with evidence of region-specific risk differentials for various tumor types. We investigated the association between 15 polymorphisms located in 8q24 regions associated with cancer risk in a pooled analysis of 2587 colorectal adenoma cases, 547 colorectal cancer cases and 2798 controls of European descent from four studies. Logistic regression was used to estimate odds ratios (ORs) and 95% confidence intervals (95% CIs) for the associations. Three polymorphisms (rs10808555, rs6983267 and rs7837328) located between 128.47 and 128.54 Mb were found to be associated with colorectal tumor risk. The association was strongest for the previously reported rs6983267 variant and was similar for both adenoma (OR(per allele) = 1.16, 95% CI: 1.07-1.25, P = 0.0002) and cancer (OR (per allele) = 1.17, 95% CI: 1.01-1.35, P = 0.03). The strength of the association of the regional haplotype containing variant alleles at rs10808555, rs6983267 and rs7837328 but not rs10505476 was greater than that of any single variant of both adenoma (OR = 1.27, P = 0.0001) and cancer (OR = 1.26, P = 0.03). The risk associated with rs6983267 was stronger for multiple adenomas (OR(per allele) = 1.29, P = 5.6 x 10(-6)) than for single adenoma (OR(per allele) = 1.10, P = 0.03) with P(heterogeneity) = 0.008. This study confirms the association between colorectal neoplasia and the 8q24 polymorphisms located between 128.47 and 128.54 Mb and suggests a role for these variants in the formation of multiple adenomas.     

B7-H4基因多态性与乳腺浸润性导管癌预后的相关性研究

目的探讨B7-H4基因rs10754339、rs10801935和rs3738414等单核苷酸多态性（SNP）位点多态性与黑龙江省妇女乳腺浸润性导管癌预后的相关性。方法取280例乳腺浸润性导管癌患者的外周血提取基因组DNA,利用聚合酶链式反应限制性片段长度多态性（PCR．RFLP）技术进行B7．H4单核苷酸多态性检测,引用统计学软件分析基因多态性与患者临床指标（包括肿瘤大小,淋巴结转移,以及雌激素受体、孕激素受体和P53基因的表达）间的关系（卡方检验计算P值）,进而确定该基因与黑龙江省汉族妇女乳腺癌预后的相关性。结果B7-H4基因的rs10754339中,AA和AG基因型发生频率在雌激素受体表达阳性和阴性患者中有统计学差异（Х^2=4．06,P〈0．05;Х^2=3．97,P〈0．05）,AA基因型和G等位基因发生频率在孕激素受体表达阳性和阴性患者中有显著差异（Х^2=4．74,P〈0．05;Х^2=5．30,P〈0．05）。rs10801935中,AA基因型和C等位基因发生频率在孕激素受体表达阳性和阴性患者中有显著差异（Х^2=5．36,P〈0．05;Х^2=5．90,P〈0．05）,而AC基因型发生频率在P53基因表达阳性和阴性患者中有显著差异（Х^2=5．82,P〈0．05）。结论B7-H4基因多态性与乳腺浸润性导管癌患者雌激素受体,孕激素受体及P53基因的表达有关联,与乳腺癌患者的预后有一定相关性。     

Genetic polymorphisms of IL17A and pri-microRNA-938, targeting IL17A 3'-UTR, influence susceptibility to gastric cancer

We report an association between gastric cancer (GC) and polymorphisms in IL17A, rs2275913 (-197 G > A), rs3748067 (*1249 C > T), and pri-miR-938, rs2505901 (T > C). We employed the multiplex PCR-SSCP method to detect gene polymorphisms in 337 GC cases and 587 controls. The minor allele frequency of rs2275913 was significantly higher, and those of rs3748067 and rs2505901 significantly lower, in GC cases than controls. The rs2275913 AA homozygote was associated with an increased risk (OR, 2.38; 95%CI, 1.63-3.46; p < 0.0001) for the development of both intestinal and diffuse types of GC. The rs3748067 T polymorphism was associated with a decreased risk for intestinal GC (OR, 0.511; 95%CI, 0.272-0.962; p = 0.037), whereas rs2505901 C locus carried a decreased risk overall for GC (OR, 0.733; 95%CI, 0.545-0.985; p = 0.039). In addition, rs3748067 T allele was inversely correlated with lymph node metastasis. Our results suggest that polymorphisms in both IL17A and pri-miR-938 contribute to cancer risk susceptibility and therefore can affect the development of gastric cancer.     

Tankyrase 1 polymorphism associated with an increased risk in developing non-small cell lung cancer in a Chinese population: a proof-of-principle study

Objectives: Tankyrase 1 (TNKS1), a poly (ADP-ribose) polymerase, regulates telomere length and apoptosis in cells, overexpression of which occurred in non-small cell lung cancer (NSCLC). This study investigated TNKS1 single-nucleotide polymorphisms (SNPs) for association with a risk in NSCLC development in a Chinese population. Methods: NSCLC cases and healthy controls of 500 each were recruited for genotyping of 24 TNKS1 SNPs. The association between genotype and NSCLC risk was evaluated by computing the odds ratio (OR) and 95% confidence interval (CI) with multivariate unconditional logistic regression analyses. Haploview software was to analyze association between haplotypes and NSCLC risk. Results: TNKS1 rs6601328 A allele was associated with a lower risk in developing NSCLC and adenocarcinoma (ADC) (OR=0.71; 95% CI, 0.51-0.99 and OR=0.70; 95% CI, 0.50-0.99), whereas TNKS1 rs11991621 C allele (OR=1.44; 95% CI, 1.03-2.03), rs11991621 C/C (OR=1.44, 95% CI, 1.03-2.35; P=0.03), and rs10503380 G/G (OR= 1.56, 95% CI, 1.09-2.50, P=0.02) were associated with a higher risk in developing NSCLC or ADC in females and rs6601328 A/A major allele (OR=1.39; 95% CI, 1.00-1.92; P=0.047) and rs7015700 G/G (OR= 1.51, 95% CI, 1.04-2.21) was associated with an increased NSCLC or ADC risk in males but a reduced NSCLC risk (OR=0.63; 95% CI, 0.42-0.96) and ADC risk (OR=0.64; 95% CI, 0.42-0.97) in females. Haploview showed that there were three Haplotype Blocks associated with NSCLC risk. However, TNKS1 rs12541709 C/C was associated with protective effect against ADC (OR=0.75; 95% CI, 0.56-0.99; P=0.04) in this Chinese population. Conclusion: TNKS1 SNPs (rs11991621 rs10503380, and rs7015700) were associated with NSCLC risk, whereas rs6601328 and rs12541709 inversely associated with NSCLC or ADC risk in this Chinese population.     

Association study between CYP24A1 gene polymorphisms and cancer risk

CYP24A1, an essential gene in regulation of vitamin D, has been reported to play an important role in enhancing immune activity and inhibiting tumorigenesis. Previous studies proposed that rs2585428, rs4809960, rs6022999 and rs6068816 in CYP24A1 gene might be greatly associated with cancer risk. To validate the findings, we here investigated the associations of these four polymorphisms and colorectal cancer (CRC) risk in a central Chinese population (426 colon cancer patients, 361 rectal cancer patients and 800 healthy controls). The genotyping was conducted by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and confirmed by sequencing. Our results revealed that the rs4809960 and rs6022999 were strongly associated with the CRC risk, especially with the colon cancer risk. Moreover, the analysis of haplotypes consisting of rs2585428(G > A), rs4809960(T > C), rs6022999(A > G) and rs6068816(C > T) indicated that haplotype ATGC significantly decreased the CRC risk, especially the colon cancer risk. Haplotype GCAT significantly increased the CRC risk, especially the rectal cancer risk. However, haplotype ACAC was only found to be associated with increased risk of CRC. To improve the statistical strength, an updated meta-analysis was further performed. The results showed that rs2585428 was associated with cancer risk in Caucasian population, rs4809960 was associated with breast cancer risk in Caucasian population, and rs6022999 was associated with cancer risk in Asian population. Collectively, the rs4809960 and rs6022999 may be the genetic biomarkers for prediction of colon cancer risk in Chinese population, the rs2585428 and rs6022999 may link to cancer susceptibility in Caucasian population and in Asian population respectly.