原发性高血压SCNN1G基因多态性特征分析

目的:本实验通过分析SCNN1G基因rs5729的基因型及等位基因分布特点,探究此基因单核苷酸多态性与原发性高血压(EH)的关系。方法:采用高分辨率熔解曲线法(high resolution melting,HRM)对rs5729位点进行基因多态性分型检测。样本来自2018-06-2019-07吉林市中心医院高血压患者115例(病例组)和非高血压人群88例(对照组)。同时,在上述样本中随机选取81例采用测序法进行验证。结果:病例组的基因型频率是TT 67.82%、AT 25.22%、AA 6.96%,T、A等位基因频率分别为80.43%和19.57%;对照组中rs5729位点TT、AT、AA基因型频率分别为89.77%、9.10%、1.13%;T、A等位基因频率分别为94.32%和5.68%;病例组和对照组的基因型与等位基因频率在2组间分布差异有统计学意义(P0.05)。结论:利用HRM法对SCNN1G rs5729位点进行基因分型,发现其在高血压人群中分布存在差异。     

中国男性痛风患者SLC2A9基因单核苷酸多态性与尿酸水平的关系

目的 SLC2A9是新近发现的尿酸转运子,该基因单核苷酸多态性可影响血清尿酸水平。本研究检测SLC2A9基因第6内含子rs7442295多态性在中国男性痛风和原发性高尿酸血症患者中的分布情况以及与尿酸代谢指标的相关性。方法 选取268例原发性痛风患者和288名健康志愿者,分别检测血压、体质量指数、血尿酸、血糖、血脂、肾功能水平,并同时提取外周血DNA,运用高分辨率熔解曲线(HRM)分析rs7442295基因型,并用测序法证实。统计学方法采用x2检验及t检验。结果 运用HRM技术能准确区分rs7442295 A/A和A/G基因型,而G/G基因型则在本研究人群中未发现。A/A和A/G基因型在人群分布频率分别是96.2％和3.8％。与健康对照组相比,痛风组的A/A和A/G基因型频率及A、G等位基因频率分布差异无统计学意义(x2=0.003,P=0.82; x2=0.003,P=1.00),但携带A/G基因型个体的尿酸水平[(293±100) μmol/L]明显低于携带A/A基因型的个体[(392±133) μmol/L]（t=2.426,P＜0.01）,且正常尿酸组内A/G基因型频率明显高于高尿酸组(x2=6.279,P=0.01）,基于HRM技术的基因分型结果与测序法所得结果完全一致。结论 SLC2A9基因rs7442295多态性可能是评估中国汉族男性人群原发性高尿酸血症危险性的一个遗传学标志,HRM技术简单、方便、快速,并实现闭管检测,非常适合单核苷酸多态性分析。     

高迁移率族蛋白1基因多态性与代谢综合征的相关性

目的探讨福建地区高迁移率族蛋白1(HMGB1)基因多态性与代谢综合征(MS)的关系。方法共纳入2015年2月-2016年2月期间连续住院治疗的受试者1005例,其中MS组450例,非MS组555例。采用病例对照关联分析研究方法,探讨HMGB1基因单核苷酸多态性rs2249825、rs1045411、rs1412125与MS及其各组分的关系。应用直接计算法计算等位基因及基因型频率,利用HaploView4.2软件分析其单倍体,非条件Logistic回归分析HMGB1各位点基因型与MS的关系。结果 (1)HMGB1基因位点rs2249825、rs1045411、rs1412125在共显性、显性、隐性3种遗传模式下与MS相关性无统计学意义(均P0.05)。HMGB1基因rs2249825-rs1045411单倍体CA在MS组与非MS组分布差异有统计学意义(P=0.027)。(2)HMGB1位点rs2249825的共显性模式基因型GC及显性模式基因型GG+GC是高三酰甘油发生的影响因素(分别OR=1.573,1.558,分别P=0.041、0.038)。HMGB1基因rs2249825-rs1045411单倍体GA、CA在高三酰甘油组与非高三酰甘油组分布差异有统计学意义(分别P=0.007,0.030)。(3)HMGB1位点rs2249825的显性模式基因型GG+GC(OR=0.711)、rs1045411的共显性模式基因型AA(OR=0.457)及隐性模式基因型AA(OR=0.438)和rs1412125的共显性模式基因型CC(OR=0.529)及显性模式基因型CC+CT(OR=0.714)是高血压发生的影响因素(均P0.05)。结论 HMGB1基因多态性与MS危险因素成分中的高三酰甘油、高血压具有一定相关性。     

C1GALT1基因rs1047763单核苷酸多态性与维吾尔族人群IgA肾病易感性的关系

目的 探讨β1,3-半乳糖基转移酶(C1GALT1)基因rs1047763单核苷酸多态性与维吾尔族人群IgA肾病(IgAN)易感性的关系.方法 选择IgAN患者90例(IgAN组),体检健康者90例(对照组),均为维吾尔族人.采用直接测序法检测两组C1GALT1基因rs1047763位点的多态性及分布,直接计数法计算其基因型、基因频率及等位基因型、等位基因型频率,并对基因型进行Hardy-Weinberg平衡检验.结果 IgAN组C1GALT1基因rs1047763位点的AA、AG、GG基因型频率分别为21.10％、47.80％、31.10％,对照组分别为17.80％、40.00％、42.20％;组间两两比较差异均无统计学意义(P均＞0.05).分层分析显示,IgAN组中的A等位基因频率、AG基因型频率明显高于对照组,未发现其与维吾尔族人群的IgAN易感性相关.结论 C1GALT1基因rs1047763位点的SNP可能与维吾尔族人群的IgAN易感性无相关性.     

脂肪量和肥胖相关基因多态性与非酒精性脂肪性肝病易感性的关系

目的 探讨我国青岛地区汉族人群脂肪量和肥胖相关基因(FTO) rs1421085、rs9939609、rs8050136多态性与非酒精性脂肪性肝病(NAFLD)易感性的关系。方法 纳入自2018年6月—2019年6月就诊于青岛市市立医院及城阳区人民医院的NAFLD患者(119例)及体检人群(187例)。采集参与者基本信息,抽取空腹静脉血并检测生化指标。提取全血DNA并采用聚合酶链式反应结合测序的方法鉴定FTO基因多态性。计量资料两组间比较采用t检验或Mann-Whitney U检验,基因型分布等定性资料两组间比较采用χ²检验,并计算等位基因频率风险系数比值比和95%CI,评估等位基因与NAFLD风险的关系。结果 NAFLD和对照组基本信息进行比较,两组间年龄、BMI、ALT、GGT、TG及胆红素(Bil)差异均具有统计学意义(P值均<0.05)。基因型鉴定结果显示,rs1421085(TT、CT、CC),rs8050136(TT、CT、CC),rs9939609(TT、AT、AA)位点均具有3种基因型。NAFLD和对照组中FTO rs1421085、rs99...     

RAD18基因rs373572位点多态性与结直肠癌的相关性研究

背景:RAD18是一种单链DNA结合蛋白,在维持受损DNA的完整性和细胞基因组稳定等方面起有重要作用。目的:研究RAD18基因单核苷酸多态性(SNPs)位点Arg302Gln(rs373572)与结直肠癌易感性及其临床病理特征的关系。方法:提取109例结直肠癌患者和241名健康对照者的外周血基因组DNA,采用PCR测序法对RAD18基因rs373572位点进行基因分型。结果:结直肠癌组与对照组间RAD18基因rs373572位点GG、GA、AA基因型分布差异有统计学意义(P0.05),结直肠癌组AA基因型频率显著高于对照组(16.5%对8.7%,P0.05;校正后OR=2.428,95%CI:1.170~5.035),有远处转移的结直肠癌患者GA基因型频率显著高于无远处转移者(75.0%对41.9%,P0.05;校正后OR=7.764,95%CI:0.927~65.206)。rs373572位点多态性与结直肠癌分化程度、肿瘤部位、Duke分期、淋巴结转移均无相关性(P0.05)。结论:RAD18基因rs373572位点AA基因型可能是结直肠癌的遗传易感因素,且该位点多态性与结直肠癌的远处转移有关。     

焦磷酸测序技术对肠促胰素作用相关基因的SNP位点分型

目的探讨肠促胰素作用相关基因的5个单核苷酸多态性位点rs7903146、rs12617656、rs4664443、rs3765467、rs10423928与二肽基肽酶(DPP)-4抑制剂疗效的相关性。方法收集35例2型糖尿病(T2DM)患者的外周血样本,自行设计聚合酶链式反应(PCR)扩增引物和测序引物,优化扩增条件,应用焦磷酸测序仪进行测序和基因型分析。并使用Sanger测序法对临床样本进行二次验证,确保焦磷酸测序法的准确性。结果建立的PCR结合焦磷酸测序方法经Sanger测序验证,35例临床样本5个位点的基因分型结果完全一致。结论建立的PCR结合焦磷酸测序方法快速、准确、成本低,适用于后序研究中对肠促胰素作用相关基因的单核苷酸多态性(SNP)位点分型。     

NKX3.1基因rs1512268单核苷酸多态性与前列腺癌风险关系的初步研究

目的 探讨NKX3.1基因的常见变异rs1512268单核苷酸多态性与中国人前列腺癌发生的关系及相关危险因素的相互作用. 方法 选取122例前列腺癌患者和年龄匹配的105例男性(前列腺癌特异抗原＜4μg/L,且无前列腺癌家族史者)作为对照,采用聚合酶链反应-高分辨熔解曲线(PCR-HRM)技术结合测序验证法检测NKX3.1基因rs1512268单核苷酸多态性的分布. 结果 前列腺癌组中GG、AG和AA基因型分布分别为42例(33.4％)、66例(54.1％)和14例(11.5％);正常对照组中三种基因型分布分别为45例(42.9％)、51例(48.6％)和9例(8.6％);两组间基因型频率(x2=1.70,0.69,0.52)和等位基因频率(x2=1.575)的分布差异无统计学意义(P＞0.05).NKX3.1基因rs1512268单核苷酸多态性的不同基因型与前列腺癌患者的年龄、Gleason评分和PSA浓度以及临床分期等指标间均无相关性(P＞0.05). 结论 NKX3.1基因rs1512268单核苷酸多态性与中国人前列腺癌的发生无明显相关性,可能不是中国人前列腺癌发病的遗传危险因素.     

Toll样受体1基因多态性与胃癌癌前病变的相关性研究

背景:大量研究表明,肠化生、异型增生为胃癌的癌前病变。Toll样受体1(TLR1)基因多态性与多种疾病的发生相关,但与胃癌癌前病变关系的研究少见。目的:探讨TLR1基因rs4833095位点多态性与胃癌癌前病变的相关性。方法:选取2008年12月—2014年12月青岛市市立医院432例胃癌癌前病变患者(包括上皮内瘤变84例、肠化生348例),同时以540名健康志愿者作为对照。采用DNA测序法检测TLR1基因rs4833095位点基因型,评估幽门螺杆菌(Hp)感染状态。以多因素Logistic回归模型分析TLR1基因多态性与胃癌癌前病变的关系。结果:病例组TLR1基因rs4833095位点GG、GA、AA基因型频率与对照组相比差异有统计学意义(χ~2=19.966,P=0.000),病例组AA基因型频率明显高于对照组(17.6%对8.9%;χ~2=16.336,P=0.000)。多因素Logistic回归分析显示,与GG基因型相比,携带AA基因型者胃癌癌前病变的发病风险明显增加(OR=1.329,95%CI:1.002~1.762)。与GG+GA基因型且未感染Hp的患者相比,携带AA基因型并感染Hp者发生胃癌癌前病变的风险明显增加(OR=3.617,95%CI:2.147~6.092)。结论:TLR1 rs4833095基因多态性与胃癌癌前病变发病风险呈正相关。     

TRIB3基因rs2295490多态性与2型糖尿病合并冠心病的相关性

目的探讨TRIB3基因rs2295490多态性与2型糖尿病(T2DM)和T2DM合并冠心病(CHD)的关系。方法用基因测序方法对126例健康对照组、101例T2DM组、94例T2DM合并CHD组TRIB3基因rs2295490多态性进行分型,同时对其生化指标如空腹血糖(FPG)、总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)、糖化血红蛋白(Hb A1c)等进行检测。结果 3组间TRIB3基因rs2295490多态性基因型和等位基因分布频率差异无统计学意义(P0.05)。健康对照组中AA基因型TG水平明显低于AG+GG基因型(P0.05);T2DM组中AA基因型TC与TG水平明显低于AG+GG基因型(P0.05);T2DM+CHD组AA基因型TC、TG、LDL-C水平明显低于AG+GG基因型(P0.05),AA基因型HDL-C水平明显高于AG+GG基因型(P0.05)。结论 TRIB3基因rs2295490多态性与T2DM合并CHD无明显关联,但可能与T2DM及T2DM并发CHD患者的血脂异常有关。     

Association of variants in the fat mass and obesity associated (FTO) gene with polycystic ovary syndrome

AIMS/HYPOTHESIS: Variants in the fat-mass and obesity-associated gene (FTO) influence susceptibility to type 2 diabetes via an effect on adiposity/obesity. Given the important role of obesity in the aetiology of both polycystic ovary syndrome (PCOS) and type 2 diabetes mellitus, our aim was to establish whether FTO variants are also implicated in PCOS susceptibility. METHODS: We performed a genetic association study of FTO variant rs9939609 using case-control analyses, conducted in 463 PCOS patients (geometric mean BMI 27.5 kg/m(2)) and 1,336 female controls (geometric mean BMI 25.3 kg/m(2)) of UK British/Irish origin. We also sought evidence for associations between FTO variation and circulating testosterone levels in 324 UK PCOS patients and 1,000 women from the Northern Finland Birth Cohort of 1966. Outcome measures included FTO rs9939609 genotype frequencies by participant group and androgen measures (testosterone, free androgen index) by genotype. RESULTS: There was a significant association between FTO genotype and PCOS status in the UK case-control analysis, which was attenuated by adjustment for BMI (Cochran-Armitage test, odds ratio [per minor allele copy] 1.30 [95% CI 1.12, 1.51], p = 7.2 x 10(-4) [unadjusted], p = 2.9 x 10(-3) [adjusted]). This association was most evident in obese PCOS patients (PCOS patients below median BMI vs UK controls, p = 0.11; above median BMI vs controls, p = 2.9 x 10(-4)). No relationship between FTO genotype and androgen levels was seen. CONCLUSIONS/INTERPRETATION: We provide the first evidence that variants that predispose to common obesity also result in altered susceptibility to PCOS, confirming the mechanistic link between these conditions. The predominant effect of FTO variants on PCOS susceptibility is probably mediated through adiposity.     

白细胞介素-7受体α基因多态性对亚洲人多发性硬化易感性的影响

目的 探讨亚洲人群白细胞介素-7受体α(IL-7RA)基因rs6897932多态性位点与多发性硬化(MS)遗传易感性的关系。 方法 采用反转录聚合酶链反应(RT-PCR)技术,对78例MS和视神经脊髓炎( neuromyelitis optica,NMO)患者(NMO组),187非MS的视神经脊髓炎(non-NMO MS)患者（non-NMO MS组）及158例健康对照组筛查IL-7RA基因分布频率,并进行统计学分析。结果 non-NMO MS组C等位基因频率89.3％（167例）明显高于对照组79.8％（126例）,差异有统计学意义(OR=2.12,95％CI:1.38～3.25,P＜0.01);CC等位基因型频率分别为78.6％( 147例)与63.3％（100例）,差异有统计学意义(OR=2.13,95％CI;1.32～3.43,P＜0.01);而NMO组与对照组C、CC等位基因频率比较,差异无统计学意义。 结论 IL-7RA基因rs6897932多态性位点影响亚洲人群MS遗传易感性。C等位基因为MS的易感因子,T等位基因则可能为MS的保护因子。     

FCRL5基因多态性对安徽省汉族人群强直性脊柱炎易感性及临床表现型的影响

目的 探讨FCRL5基因中rs6427384和rs12036228位点单核苷酸多态性(SNP)对强直性脊柱炎(AS)易感性和临床表现型的影响。方法 收集安徽汉族人群AS患者169例和健康对照184名,采用基于高温连接酶的连接酶检测反应( LDR)—聚合酶链反应(PCR)方法检测其FCRL5基因中rs6427384和rs12036228位点的SNP,分析比较其等位基因频率及基因型频率在患者组和对照组中的分布,并比较不同基因型AS患者的临床表现型的差别。采用x2检验和方差分析进行统计学处理。结果 AS患者组和对照人群中rs6427384位点C等位基因频率(17.3％,25.0％)和T等位基因频率(82.7％,75.0％)及rs12036228位点C等位基因频率(92.3％,87.2％)和T等位基因频率(7.7％,12.8％)分布差异均有统计学意义(P＜0.05)。FCRL5基因rs6427384位点CC、CT和TT基因型频率在AS组（3.7％、27.2％和69.1％）和对照组（3.9％、42.2％和53.9％）之间的分布差异有统计学意义(-8.7637,P=0.0 125)。AS患者组rs6427384位点各基因型间骶髂关节X线分期(x2=34.159,P=0.0001)、疾病首发症状（腰痛或外周关节炎）发生率(x2=7.254,P=0.027）、晨僵持续时间(F=4.159,P=0.018)、Bath AS疾病活动指数(BASDAI)平均积分(F=4.461,P=0.014)差异均有统计学意义。AS患者组rs12036228位点各基因型间仅在疾病首发症状上有明显不同（=6.640,P=0.036）。结论 安徽籍汉族人群AS易感性与FCRL5基因rs6427384和rs 12036228位点单核苷酸多态性有关;其基因型的不同对AS的临床表现型有影响。     

Role of the rs9939609 gene variant of FTO on cardiovascular risk factors and adipokines levels in naive patients with diabetes mellitus type 2

One of the genetic variants (rs9939609) of FTO gene is related with obesity and type 2 diabetes mellitus. The aim of the present study was to analyze the relationship of the rs9939609 FTO gene polymorphism to body weight, insulin resistance, cardiovascular risk factors and serum adipokine levels in patients with diabetes. 123 naïve patients with diabetes mellitus type 2 were analyzed in a cross sectional design. Body weight, blood pressure, fast blood glucose, c-reactive protein (CRP), insulin, HbA1c, insulin resistance (homeostasis model assessment, HOMA-R), total cholesterol, HDL-cholesterol, HDL-cholesterol, triglycerides blood and adipocytokines levels were measured. Forty one patients (14 males/27 females) (33.3 %) had the genotype TT (wild type group), 51 (11 males/40 females) (41.5 %) TA and 31 (9 males/22 females) (25.2 %) AA (mutant type group). No association between the FTO variant and anthropometric parameters or blood pressure was found. Wild type group had higher HOMA-R (1.3 units:CI95% 0.51–5.8), insulin (3.3 mUI/L:CI95% 0.31–13.4) and triglyceride (12.6 mg/dl: CI95% 3.90–46.1) levels than mutant allelic group (TA and AA). Adipocytokines levels were similar in both genotype groups. The FTO gene polymorphism, rs9939609, was found to be associated with HOMA-R, insulin and triglyceride levels in naïve diabetic patients with TT variant.     

RNF213基因多态性与颅内血管狭窄性疾病易感性的汇总分析

目的 探讨RNF213基因多态性(rs112735431、rs138130613及rs148731719)与颅内血管狭窄性疾病易感性的关联.方法 根据相关数据库,收集涉及RNF213基因多态性与颅内血管狭窄性疾病关联的研究文献,应用Stata 12.0软件选用合适遗传模型,分析异质性并计算合并优势比(odds ratio,OR)及其95％可信区间(confidence interval,口).结果 经筛选共纳入12篇相关文献.汇总分析结果显示,rs112735431多态性与烟雾病易感性在各种遗传模型下均存在显著性关联,其中以显性模型最为显著(AA+ GA基因型对GG基因型:OR 101.46,95％ CI 59.41～173.27;P＜0.001),同时该位点多态性也与非烟雾病性颅内动脉狭窄/闭塞存在显著相关性(AA+ GA基因型对GG基因型:OR 13.82,95％ CI4.48～42.61;P ＜0.001);rs138130613多态性在显性模型下与中国人群烟雾病易感性存在显著性关联(OR 5.01,95％ CI 1.57 ～ 15.98;P =0.006);未发现rs148731719多态性与烟雾病易感性有关联.结论 RNF213基因rs112735431多态性是烟雾病的易感因素,同时该位点多态性还与非烟雾病性颅内动脉狭窄形成有关.系统研究RNF213分子功能对此类血管狭窄性疾病的诊断和治疗具有重要意义.     

The association of the common fat mass and obesity associated gene polymorphisms with type 2 diabetes in obese Iraqi population

Background & objectivesThis study investigates the association of two potential Fat mass and obesity associated gene (FTO) gene polymorphisms (rs9939609 and rs918031) as potential predictors of type 2 diabetes (T2D) in obese Iraqi population and their metabolic effects on hyperglycemia and insulin sensitivity.Materials & methodsThe study included 400 participants with obesity & T2D, with a matching 400 obese non-diabetic cohort. Venous blood samples were collected for DNA extraction. Using specific primers and restriction enzymes, genotyping was performed to identify the various alleles for each gene. The genotype and allele frequencies determined by multinomial logistic regression analysis for FTO single nucleotide polymorphisms (rs9939609) among all the study groups.ResultsThere is a two-fold increase in the risk of T2D within the homozygous genotype (TT) group (OR = 2.43, CI 95% 3.57–11.2, P ≤ 0.001) as compared to the wild type (TA). In addition, there was a significantly higher level of the minor allele genotype (T) in T2D patients when compared to the control group, (P ≤ 0.001).ConclusionWe conclude that the FTO rs9939609 genotype significantly affect the development of insulin resistance, therefore the future occurrence of T2D, in obese individuals.     

Relation of the rs9939609 gene variant in FTO with metabolic syndrome in obese female patients

ObjectivesCommon polymorphisms of the fat mass and obesity associated gene (FTO) have been linked to obesity and diabetes mellitus type 2 in some populations. The aim of our study was to analyze the relationship of the rs9939609 FTO gene polymorphism with metabolic syndrome and its components.Material and MethodsA population of 457 obese Caucasian females was analyzed in a cross-sectional survey. To estimate the prevalence of Metabolic Syndrome, the definitions of the ATPIII were considered. Genotype of FTO gene polymorphism (rs9939609) was studied.ResultsOne hundred and thirty patients (28.4%) had the genotype TT (wild group), whereas 227 patients (49.7%) had the genotype TA and 100 patients (21.9%) had the genotype AA. Prevalence of metabolic syndrome (MS) with ATP III definition was 40.7% (186 patients) and 59.3% patients had no MS (n = 271). Prevalence of mutant FTO genotypes was similar in patients with metabolic syndrome (27.4% wild genotype and 72.6% mutant genotype) and without metabolic syndrome (29.2% wild genotype and 70.8% mutant genotype).Odds ratio of metabolic syndrome in wild vs mutant genotype was 1.04 (95% CI: 0.87–1.22). Insulin levels (13.9 ± 6.3 mUI/L vs. 12.6 ± 3.4 mUI/L; p < 0.05), HOMA-R (3.3 ± 1.6 vs. 2.8 ± 1.4; p < 0.05) and triglycerides concentrations (110.8 ± 27.3 mg/dl vs. 103.1 ± 47.3 mg/dl; p < 0.05) were lower in the mutant type group than the wild type group in patients without metabolic syndrome.ConclusionThe FTO gene polymorphism (rs9939609) was found to be associated with increased insulin resistance, insulin and triglyceride levels in obese females with TT variant and without metabolic syndrome. MS or its components were not associated with this polymorphism in obese females.     

飞行时间质谱与TaqMan探针技术在结核病易感性相关基因单核苷酸多态性筛选中的应用

目的 对比分析飞行时间质谱技术（MALDI-TOF）和TaqMan探针筛选与结核病易感性相关单核苷酸多态性（SNP）位点的结果,以及联合应用的方法学和效果评价.方法 选取2010年10月至2011年4月在深圳市第三人民医院收治并确诊的结核病患者400例为结核病组,对照组为同时期收集的健康体检者300名,利用MALDI-TOF对选取的7个SNP位点（rs2227476、rs1800795、rs56077270、rs1800797、rs2227484、rs2227472和rs2227473）同时进行基因分型,初步筛选易感SNP位点;与结核病易感相关的单个SNP位点,采用基于TaqMan探针技术的实时荧光定量PCR对同样的标本再进行基因分型,比较两种方法的准确性与敏感度;以rs2227473位点为实例对分型结果的基因频率进行分析,确定肺结核的易感SNP.结果 MALDI-TOF分型成功率为99.7％（698/700）,TaqMan探针技术为98.4％（689/700）;在基因分型过程中,MALDI-TOF与TaqMan探针方法对1例标本的分型结果不一致,经过对此分型结果进行了测序验证,MALDI-TOF的分型结果正确,MALDI-TOF在准确性和敏感度比TaqMan法稍高.位点rs2227473基因频率分析中,结核病组G等位基因频率（90.3％,722/800）明显高于对照组（82.5％,495/600）（x2=6.911,P=0.009）.结论 上述肺结核易感基因的筛选方法是可行的;实例分析中,将两种方法联合应用,发现了IL-22基因rs2227473位点等位基因G可能与肺结核发病相关,两位点中等位基因A可能为保护性基因.