Performance of CEA and CA19-9 in identifying pleural effusions caused by specific malignancies

ObjectivesTumor markers analysis has been proposed as a less invasive alternative for categorizing malignant and non-malignant pleural effusions. This study establishes diagnostic cutoffs for CEA and CA19-9 in pleural fluid to differentiate etiologies of effusions.Design and methodsPleural effusions obtained from 198 patients (100 malignant, 98 non-malignant) were analyzed for CEA and CA19-9. ROC curve analysis was performed to determine analyte cutoffs, and cutoff performance was examined in various subsets of malignancies.ResultsCEA and CA19-9 concentrations were significantly higher in malignant effusions compared to non-malignant effusions, particularly in effusions caused by lung cancer and other cancers associated with elevated CEA and/or CA19-9 serum concentrations. Concentrations were not elevated in effusions caused by cancers not associated with serum tumor marker elevations.ConclusionsMeasurement of CEA and CA19-9 in pleural fluid complements cytology and other classifying tests. Performance is specifically enhanced in effusions caused by malignancies known to secrete CEA or CA19-9, and their use should be tailored to patients suspected of having those malignancies. Routine analysis of these markers is therefore not recommended in all pleural effusions. Moreover, negative results should be correlated with serum levels to assist in the clinical interpretation.     

血清肿瘤标记物及HSP60联合检测对大肠癌诊断的意义

目的 探讨血清肿瘤标记物CEA、CA19-9及HSP60的水平与大肠癌生物学特性的关系及联合诊断的价值.方法 采用电化学发光法及酶联免疫法分别对45例大肠癌患者和44例正常对照者进行血清中CEA、CA19-9及HSP60含量的检测,分析其与大肠癌转移和临床分期的关系,并用ROC曲线分析癌症患者血清中CEA、CA19-9及HSP60的联合诊断价值.结果 大肠癌患者血清中CEA、CA19-9及HSP60水平明显高于正常对照组,尤其在Ⅲ-Ⅳ期以及有淋巴转移的患者血清中水平更高,ROC曲线结果显示三项联合检测敏感性、特异性及AUC值可达到80.0%、90.9%和0.90,与单项或者二项联合相比,可明显提高诊断的准确性.结论 血清中CEA、CA19-9及HSP60水平是大肠癌发生、发展的重要检测指标,三项联合检测对大肠癌患者诊断和预后等有着重要意义.     

血清肿瘤标志物联合检测在肺癌诊断中的临床价值

目的探讨肿瘤标志物癌胚抗原(CEA)、糖类抗原125(CA125)、神经特异性烯醇化酶(NSE)、细胞角蛋白19片段(CYFRA21-1)检测对肺癌诊断的临床价值。方法收集肺癌患者92例和肺良性疾病患者60例,用电化学发光法检测其血清中CEA、CA125、NSE和CYFRA21-1的阳性率。结果肺癌患者血清肿瘤     

Diagnostic values of MMP-7, MMP-9, MMP-11, TIMP-1, TIMP-2, CEA,and CA19-9 in patients with colorectal cancer

ObjectiveColorectal cancer (CRC) is one of the most common and lethal malignancies. The identification of precise and noninvasive biomarkers is urgently needed to aid the early diagnosis and clinical management of CRC.MethodsA total of 112 patients with CRC and 115 healthy control subjects were included in this study. Serum levels of matrix metalloproteinase (MMP)-7, MMP-9, MMP-11, tissue inhibitor of metalloproteinase (TIMP)-1, and TIMP-2 were analyzed by enzyme-linked immunosorbent assay, and carcinoembryonic antigen (CEA) and carbohydrate antigen (CA)19-9 levels were measured using an automatic immunoassay analyzer.ResultsMMP-7, MMP-9, MMP-11, TIMP-1, TIMP-2, CEA, and CA19-9 levels were all significantly higher in CRC patients compared with healthy controls. MMP-7, TIMP-1, and CEA levels were also closely related to clinicopathologic features in patients with CRC. The combination of serum CEA, MMP-7, and TIMP-1 significantly improved the diagnostic value compared with any single marker (area under the curve 0.858–0.890). Furthermore, a combined detection model including MMP-7, TIMP-1, and CEA improved both the specificity and sensitivity for detecting CRC.ConclusionsThe results showed that combined detection of CEA, MMP-7, and TIMP-1 in serum could provide a specific and sensitive biomarker for the diagnosis of CRC.     

血清CEA、CA199、CA125、CA153、AFP联合检测对胃癌的诊断价值

目的 探讨血清癌胚抗原（ CEA） 、糖链抗原199（ CA199） 、糖链抗原125（CA125）、糖链抗原153（CA153）、甲胎蛋白（AFP）单检和联检在胃癌中的诊断价值.方法采用化学发光免疫分析法检测50 例胃癌患者和65 例正常对照组的血清CEA、CA199、CA125、CA153、AFP的含量,分析五种肿瘤标志物单个检测和联合检测的敏感度、特异度.结果 胃癌患者的血清CEA、CA199、CA125的含量明显高于正常对照组（P＜0.05）;采用单项肿瘤标志物诊断胃癌时,灵敏度最高的为CEA和CA199,特异度最高的为CA153,ROC曲线下面积最大的为CEA;采用不同肿瘤标志物的组合诊断胃癌时,灵敏度和特异度均较好的为CEA、CA199与CA125组成的组合.联合检测和单独检测相比,敏感度显著提高,特异度有所下降.结论 联合检测可提高胃癌诊断的敏感度,为早期诊断及早期治疗提供有力的依据.     

乳腺肿块患者血清CA15-3及CEA检测的临床意义

目的 探讨电化学发光法检测血清糖类抗原15-3(CA15-3)及癌胚抗原(CEA)在乳腺疾病诊断以及术后监测中的临床应用价值.方法 分析2005年5月至2006年12月间住院患者血清CA15-3及CEA检测结果,结合临床病历资料进行统计学分析.结果 乳腺良性肿块组与乳腺癌组CA15-3及CEA检测结果差异显著,血清CA15-3及CEA用于诊断乳腺癌的特异性较高(97.6%及96%),但敏感性较低(30.5%及13.9%);血清CA15-3异常的乳腺癌患者,术后CA15-3明显下降;CA15-3与CEA之间存在一定的相关性,但相关系数不高.结论 CA15-3及CEA在诊断早期乳腺癌时虽然特异性很高,但由于敏感性太低导致其临床应用价值有限,二者联合应用对提高诊断效率意义不大,当乳腺癌患者血清CA15-3较高时,可以用于评价治疗效果.对于乳腺癌的早期诊断,尚需寻找更敏感的标志物.     

Monitoring breast cancer with CA 549

CA 549, a new marker for breast cancer, was measured in serum of 719 patients by an immunoradiometric assay involving two monoclonal antibodies: BC4E 549, developed against a breast-tumor cell line, and BC4N 154, developed against milk fat-globule membrane. The reference interval for healthy women was 0-11 kilo-units/L. The percentages of patients with CA 549 greater than 11 kilo-units/L for benign conditions are: 0% pregnancy, 1% breast, 26% liver; and for nonbreast metastatic cancers: 12% endometrial, 33% lung, 40% prostatic, and 50% ovarian. In women with breast cancer who were receiving or had completed adjuvant therapy with no evidence of disease there was an 11% increase in CA 549. For patients with metastatic breast cancer, 19% of those in complete remission, 63% of those in partial remission, and 88% of those with systemic progression had increased CA 549. CA 549 is a more specific marker than carcinoembryonic antigen (CEA) in nonmalignant disease, nonbreast malignancies, and adjuvant breast-cancer patients, and it is more sensitive in breast-cancer patients with progressive disease than is CEA. We could show CA 549 to be superior to CEA for detecting active breast cancer in patients with malignant or nonmalignant breast diseases. In monitoring 19 adjuvant-treated patients, CA 549 correlated more closely with the clinical course than did CEA values and, when increased, predicted a clinical recurrence. In 18 breast-cancer patients with metastasis, monitored for two to three years, the change of CA 549 values paralleled disease courses more often than did CEA values.     

Tumour-associated trypsin inhibitor, carcinoembryonic antigen and acute-phase reactant proteins CRP and alpha1-antitrypsin in patients with gastrointestinal malignancies

Objectives: Elevated serum tumour-associated trypsin inhibitor (TATI) levels have been observed in association with malignancy or inflammation. The aim of our study was to evaluate the role of TATI in gastric and colorectal cancer.Design and methods: In preoperative serum samples, we measured TATI, carcinoembryonic antigen (CEA), C-reactive protein (CRP) and α₁-antitrypsin (AAT).Results: Elevated levels of TATI were observed in 50% and 41.7% of patients with gastric and colorectal cancer. Elevated levels of TATI were observed only in 8% of patients with benign gastrointestinal malignancies (92% specificity). Elevated levels of CEA were observed in 25% and 24.4% of patients, respectively. The total positivity of CEA and TATI (with at least one marker positive) was 62.5% and 57%, respectively. Spearman's test has shown a statistically significant correlation among serum TATI, CRP and AAT levels (P < 0.01).Conclusions: In gastrointestinal cancer, TATI can be used as a complementary tumour marker in addition to CEA. Regulation of TATI synthesis resembles that of acute-phase reactant proteins.     

CEA、CA153、CA199、CYFR21-1联合检测在乳腺癌诊断中的意义

目的：探讨乳腺癌患者血清癌胚抗原（CEA）、糖蛋白抗原（CA）153、CA199、细胞角蛋白片段（CYFR）21-1联合检测在乳腺癌诊断中的意义。方法选取经病理学诊断确诊为乳腺癌的60例患者作为乳腺癌组,选取30例良性乳腺病患者作为乳腺良性疾病组,40例体检结果正常的女性作为健康组。采用Beckman Coulter 快速微粒子酶免疫分析系统（IMX）检测患者血清CEA、CA153、CA199、CYFR21-1水平,分析CEA、CA153、CA199、CYFR21-1水平与乳腺癌临床特征之间的关系。结果乳腺癌组血清CEA、CA153、CA199、CYFR21-1水平均高于乳腺良性疾病组及健康组;乳腺癌组血清CEA、CA153、CA199、CYFR21-1联合检测的阳性率均高于单独检测的阳性率;4种指标联合检测对乳腺癌诊断的特异度及准确度无明显影响,灵敏度明显提高。结论血清CEA、CA153、CA199、CYFR21-1水平联合检测有助于乳腺癌的诊断。     

血清肿瘤标记物与HER2阳性乳腺癌骨转移的相关性研究

目的观察人类表皮生长因子受体2(HER2)阳性乳腺癌的肿瘤标记物水平与骨转移的相关性。方法收集确诊为HER2阳性浸润性乳腺癌的100例患者,根据有无骨转移分为2组:骨转移组(n=40),未骨转移组(n=60)。采用ELISA法监测患者入院时、随访发生骨转移时血清糖类抗原(CA153)和癌胚抗原(CEA)水平,观察2组患者年龄、病理分型、血清肿瘤标记物和赫赛汀的应用情况等,比较2组患者上述指标的差异。采用受试者工作特征(ROC)曲线预测血清CA153、CEA对HER2阳性乳腺癌骨转移的价值。结果 HER2阳性乳腺癌患者中,骨转移组和未骨转移组入院时血清CEA、CA153水平差异无统计学意义(P0.05),ROC曲线发现血清CEA水平(AUC 0.72,95%CI0.63~0.81,P=0.01)和CA153水平(AUC 0.67,95%CI 0.60~0.77,P=0.03)为预测预测骨转移的因素。其中CA15317.2U/mL预测HER2阳性乳腺癌患者骨转移的敏感度为78.8%,特异度为45.0%;CEA2.64μg/L预测骨转移的敏感度为75.8%,特异度为43.3%。结论血清CA153和CEA水平对HER2阳性乳腺癌的骨转移有一定的预测价值。     

4种血清肿瘤标志物联合检测在乳腺癌诊断中的临床意义

目的探究血清糖类抗原(CA)125、CA153、癌胚抗原(CEA)及肿瘤特异度生长因子(TSGF)4项血清肿瘤标志物联合检测在乳腺癌诊断中的临床意义。方法将2015年3月至2016年3月在该院就诊的125例患者为研究对象,其中乳腺癌组65例,良性乳腺疾病组60例,并以55例健康体检者为对照组。检测3组研究对象血清中的CA125、CA153、CEA及TSGF等,观察并对比这4项肿瘤标志物在乳腺癌诊断中的应用价值。结果乳腺癌组患者的血清CA125、CA153、CEA及TSGF水平均明显高于良性乳腺疾病组和对照组,差异均有统计学意义(P0.05)。同时4项血清肿瘤标志联合检测的灵敏度为90.2%,特异度为88.9%,明显高于单项血清肿瘤标志物检测的灵敏度和特异度,差异有统计学意义(χ2=26.12,P0.05)。结论 4项血清肿瘤标志物联合检测不仅将乳腺癌诊断的灵敏度提高,同时也提高了乳腺癌诊断的特异度,为乳腺癌的诊断提供了有力的依据,值得临床推广。     

Alu-based cell-free DNA: A potential complementary biomarker for diagnosis of colorectal cancer

ObjectivesMany patients with colorectal cancer (CRC) present with regional or widespread metastasis, partially reflecting limitations of the current screening programs. This study was aimed to find a complementary marker that can improve the diagnostic accuracy.Design and methodsConcentrations of cell-free DNA based on Alu (Alu‐based CFD) in 31 unselected CRC patients, 30 intestinal polyp patients and 92 healthy individuals were detected by branch DNA (bDNA). Concentrations of carcinoembryonic antigen (CEA) and carbohydrate antigen 19–9 (CA19-9) were detected by ARCHITECT assay.ResultsThere was significant difference in concentrations of CFD between CRC and intestinal polyp patients or healthy individuals (P < 0.0001). There was no statistically significant difference in CFD in different subgroups of CRC patients with respect to gender, age, tumor site and pathologic stage, suggesting that CFD might be an independent marker relative to CEA and CA19-9. There was a significant correlation between pathologic stage and CEA or CA19-9. Although no significant correlation was observed between pathologic stage and CFD, CFD (the area under the receiver operating characteristic curve (AUC) = 0.904) seemed to be a better indicator to distinguish CRC patients from intestinal polyp patients as compared with CEA (AUC = 0.681) or CA19-9 (AUC = 0.651). CFD was more accurate than CEA or CA19-9 in diagnosing CRC.ConclusionsCombination of CFD, CEA and CA19-9 may be a better option for the diagnosis of CRC than any of them used alone. Discrimination CRC from intestinal polyp patients with CFD and staging with CEA and CA19-9 may substantially improve the accuracy CRC diagnosis.     

血清TK1监测对胰腺癌诊断的临床意义

目的研究评价胰腺癌和胰腺炎患者血清胸苷激酶1（TK1）的表达,同时检测胰腺癌肿瘤标记物糖类抗原19-9（CA19-9）和癌胚抗原（CEA）,探讨联合检测TK1、CA19-9和CEA在胰腺癌与胰腺炎鉴别诊断方面的临床价值。方法应用化学增强发光（ECL）点印迹法定量检测43例胰腺癌和40例胰腺炎患者血清TK1浓度,直接化学发光法检测血清CEA和CA19-9浓度;50例健康志愿者作为对照组。结果血清CA19-9、CEA水平胰腺癌组、胰腺炎组明显高于对照组（P均〈0.05）,但胰腺癌组与胰腺炎组比较差异无统计学意义。血清TK1水平胰腺癌组明显高于胰腺炎组、对照组（P均〈0.05）,而胰腺炎组与对照组比较差异无统计学意义。结论联合检测血清CA199、CEA和TK1有助于胰腺炎和胰腺癌的鉴别诊断。     

外周血STC-1mRNA测定及其在结直肠癌诊断中的价值

目的比较斯钙素（STC-1）mRNA在结直肠癌患者和健康人外周血中表达水平的差异,初步探讨STC-1mRNA作为循环肿瘤标志物的临床意义。方法采用荧光定量逆转录聚合酶链反应（RT—PCR）检测37例结直肠癌患者、18名健康人外周血STC-1mRNA的表达水平,并对其中30例患者的癌胚抗原（CEA）和糖链抗原199（CA199）等血清肿瘤标志物进行比较分析。结果结直肠癌患者与健康人的外周血STC-1mRNA表达水平差异有统计学意义,患者组高于健康组;以受试者工作特征（ROC）曲线分析,发现STC-1mRNA作为结直肠癌诊断指标具有较高的敏感性和特异性,其曲线下面积为0．730;以0．5为表达阳性界值,STC-1mRNA检出结直肠癌的效能优于血清肿瘤标志物CEA和CA199的联合应用。结论应用荧光定量RT—PCR检测结直肠癌患者外周血STC-1mRNA表达水平具有较高的诊断价值,其可能成为新的用于结直肠癌诊断的循环肿瘤标志物。     

术前血清CEA、CA19-9、CA50、AFP、TPS检测在结直肠癌肝转移中的预测价值

目的探讨在结直肠癌肝转移预测中,术前血清癌胚抗原(CEA)、糖类抗原19-9(CA19-9)、糖类抗原50(CA50)、甲胎蛋白(AFP)、组织多肽特异性抗原(TPS)检测的应用价值。方法选取该院接诊的结直肠癌患者168例,根据术后病理结果,将发生肝转移的患者45例作为观察组,未转移患者123例作为对照组,对入组对象进行血清抽检,分析血清CEA、CA19-9、CA50、AFP、TPS表达。结果观察组血清CEA、CA19-9、CA50、AFP、TPS检测结果均高于对照组,差异有统计学意义(P<0.05);结直肠癌肝转移患者中,血清CEA、CA19-9在不同T分期患者所占百分比相比较,差异有统计学意义(P<0.05);血清指标单独检测阳性率与联合检测阳性率比较,差异有统计学意义(P<0.05);五项指标联用的灵敏度为84.44%,特异度为94.31%。结论在结直肠癌肝转移预测诊断中,术前血清CEA、CA19-9、CA50、AFP、TPS联合检测具有较高应用价值。     

血清CA153、CA125和CEA联合检测在乳腺癌诊断中的应用

目的探讨检测外周血肿瘤标志物CA153、CA125和CEA在乳腺癌的临床应用价值。方法应用电化学发光技术检测20例健康对照者、55例乳腺癌患者以及20例乳房良性肿瘤患者手术前、后血清中CA153、CA125和CEA含量。结果乳腺癌患者组血清CA153、CA125、CEA含量较健康对照组显著升高（P〈0．05）,其中CEA和CA153含量较乳房良性肿瘤患者组显著升高（P〈0．05）。手术后,患者血清中CA153含量较手术前明显下降,差异具有统计学意义（P〈O．05）。临床分期为Ⅲ、Ⅳ期的乳腺癌患者外周血CEA和CA153含量较健康对照组显著升高（P〈0．05）;Ⅲ、Ⅳ期的乳腺癌患者外周血CA153含量较Ⅰ、Ⅱ期患者显著升高（P〈0．05）。联合检测CA153、CA125、CEA,敏感性达53．8％,特异性为83．3％。结论检测CA153、CA125、CEA对乳腺癌的诊断有一定的价值,其中CA153和CEA对良、恶性乳腺肿瘤的鉴别诊断、乳腺癌病情进程的监测有实用价值。     

多项指标联合检测在乳腺癌早期诊断中的应用

目的探讨血清游离前列腺特异性抗原(F-PSA)、白细胞介素-6(IL-6)、癌胚抗原(CEA)、糖类抗原153(CA153)联合检测在乳腺癌早期诊断中的价值。方法采用微粒化学发光免疫法检测35例乳腺癌患者、183乳腺良性疾病与80例健康女性血清中F-PSA、IL-6、CEA、CA153水平。结果乳腺癌组F-PSA、IL-6、CEA、CA153水平均显著高于乳腺良性疾病与健康女性对照组,差异有统计学意义(P0.01);乳腺良性疾病与健康女性对照组F-PSA、IL-6、CEA、CA153水平差异无统计学意义(P0.05)。单独检测血清F-PSA、IL-6、CEA、CA153评价乳腺癌的灵敏度分别为71.5%、87.9%、41.5%、61.3%。特异性为45.7%、23.8%、40.3%、93.2%,联合检测血清F-PSA、IL-6、CEA、CA153诊断乳腺癌的灵敏度为81.5%、特异性为88.5%。结论联合检测血清F-PSA、IL-6、CEA、CA153能有效提高乳腺癌早期诊断率。     

肿瘤标志物CEA、CA153、SCC、CY211联合检测肺癌

目的 :探讨肿瘤标志物的联合检测在肺癌诊断及鉴别诊断的临床意义。方法 :采集 14 4例有肺部疾病入院患者的血清样本 ,其中肺癌患者 94例 ,肺部良性病变患者 (BLD) 5 0例 ,用免疫放射法检测其血清CEA、CA15 3、SCC和CY2 11的含量。结果 :肿瘤患者血清CEA、CA15 3、SCC、CY2 11的阳性率分别为 38.2 0 %、5 9.30 %、2 0 .4 8%和 5 4 .95 % ,明显高于BLD组 (P <0 .0 0 1) ;非小细胞肺癌 (NSCLC)中鳞癌以CY2 11阳性率最高 ,达 88.4 6 % ,腺癌为CA15 3(73.91% ) ,小细胞肺癌 (SCLC)为CY2 11(5 2 .94 % ) ;四项标志物联合检测可将阳性率提高到 89.36 % ,特异度为 80 % ;血清CA15 3+CY2 11联合检测敏感度为84 .94 % ,特异度为 84 % ;对于不同分期 ,血清CEA、CA15 3和CY2 11含量随期别的升高而升高 ;标志物联合检测早期肿瘤诊断敏感度为 75 %。结论 :血清肿瘤标志物CEA、CA15 3、SCC和CY2 11联合检测可提高肺癌诊断的敏感度及早期诊断阳性率 ,建议联合检测方式以CA15 3和CY2 11为佳。     

CA72-4联合AFP、CEA、CA19-9检测在胃肠道疾病中的临床应用价值研究

目的探讨糖类抗原72-4(CA72-4)联合甲胎蛋白(AFP)、癌胚抗原(CEA)、糖类抗原19-9(CA19-9)检测在胃肠道良、恶性疾病中的临床价值。方法收集2017-2018年该院就诊的胃癌(55例)、胃肠道其他癌(71例)、胃肠道良性疾病(556例)患者的临床资料与血清AFP、CEA、CA72-4、CA19-9检查结果,分析肿瘤标志物在不同疾病组间的表达差异。结果(1)血清CA72-4水平在胃癌组与良性疾病组、胃癌组与其他癌组比较,差异有统计学意义(P<0.05)。血清CA72-4在胃癌组的阳性率(30.91%)明显高于其他癌组(18.84%)及良性疾病组(17.99%)。(2)血清CA72-4在胃溃疡、胃息肉、慢性胃炎、急性胃肠炎、十二指肠溃疡、肠息肉等良性疾病的阳性率分别为15.00%、19.12%、11.02%、25.53%、24.07%、19.58%,各组间CA72-4水平及阳性率比较差异无统计学意义(P>0.05);(3)CEA单项检测用于胃癌诊断的灵敏度为23.64%,CA72-4+CEA+CA19-9联合检测用于胃癌诊断的灵敏度为47.27%;CA19-9单项检测用于胃肠道其他癌诊断的灵敏度为24.64%,AFP+CEA+CA19-9联合检测用于胃肠道其他癌诊断的灵敏度为66.20%,差异有统计学意义(P<0.05)。结论血清CA72-4联合CEA、CA19-9检测,可更好地识别胃癌;血清AFP联合CEA、CA19-9检测,可更好地识别胃肠道其他恶性肿瘤。     

血清miR-107在结直肠癌患者中的表达及其诊断价值分析

目的 探究血清微小RNA(miR)-107在结直肠癌患者中的表达及其对疾病的诊断价值。方法选取2016年1月至2019年1月该院收治的结直肠癌患者60例作为结直肠癌组,并选取同期在该院接受治疗的60例结直肠息肉患者作为息肉对照组,另选取同期在本院体检的健康志愿者60例作为健康对照组。采用实时荧光定量PCR法检测miR-107的相对表达量,比较3组研究对象血清癌胚抗原(CEA)、糖类抗原199(CA199)、miR-107的水平,分析血清miR-107与结直肠癌患者临床病理特征的关系,受试者操作特征曲线(ROC)分析血清miR-107、CEA、CA199对直结肠癌的诊断价值。结果 结直肠癌组的血清miR-107相对表达量以及血清CEA、CA199水平高于息肉对照组和健康对照组,差异有统计学意义(P<0.05);结直肠癌患者血清miR-107的水平与性别、年龄、肿瘤最大径无关,差异无统计学意义(P>0.05),而与分化程度、TNM分期、淋巴结转移有关,差异有统计学意义(P<0.05);miR-107所得ROC曲线下面积为0.882(95%CI:0.814~0.950),灵敏度和特异度分别为85.0%和82.9%。若和CEA及CA199进行联合应用,则灵敏度和特异度可提高至91.7%和86.7%。结论 miR-107在结直肠癌患者血清中呈高水平,而且其水平与分化程度、TNM分期、淋巴结转移有关,且对结直肠癌有较高的诊断价值。