Inetetamab combined with tegafur as second-line treatment for human epidermal growth factor receptor-2-positive gastric cancer: A case report

BACKGROUND Human epidermal growth factor receptor-2(HER-2)plays a vital role in tumor cell proliferation and metastasis.However,the prognosis of HER2-positive gastric cancer is poor.Inetetamab,a novel anti-HER2 targeting drug independently developed in China,exhibits more potent antibody-dependent cell-mediated cytotoxicity than trastuzumab,which is administered as the first-line treatment for HER2-positive gastric cancer in combination with chemotherapy.In this case,the efficacy and safety of inetetamab combined with tegafur was investigated as a second-line treatment for HER2-positive gastric cancer.CASE SUMMARY A 52-year-old male patient with HER2-positive gastric cancer presented with abdominal distension,poor appetite,and fatigue two years after receiving six cycles of oxaliplatin combined with tegafur as first-line treatment after surgery,followed by tegafur monotherapy for six months.The patient was diagnosed with postoperative recurrence of gastric adenocarcinoma.He received 17 cycles of a combination of inetetamab,an innovative domestically developed anti-HER2 monoclonal antibody,and tegafur chemotherapy as the second-line treatment(inetetamab 200 mg on day 1,every 3 wk combined with tegafur twice daily on days 1–14,every 3 wk).Evaluation of the efficacy of the second-line treatment revealed that the patient achieved a stable condition and progression-free survival of 17 months.He tolerated the treatment well without exhibiting any grade 3-4 adverse events.CONCLUSION Inetetamab combined with chemotherapy for the treatment of metastatic HER2-positive gastric cancer demonstrates significant survival benefits and acceptable safety.

Human epidermal growth factor receptor-2 gene amplification in gastric cancer using tissue microarray technology

AIM:To assess human epidermal growth factor receptor-2 (HER2)-status in gastric cancer and matched lymph node metastases by immunohistochemistry (IHC) and chromogenic in situ hybridization (CISH).METHODS:120 cases of primary gastric carcinomas and 45 matched lymph node metastases from patients with full clinicopathological features were mounted onto multiple-punch and single-punch tissue microarrays,respectively,and examined for HER2 overexpression and gene amplification by IHC and CISH.RESULTS:Twenty-four tumors (20%) expressed HER2 immunohistochemically.An IHC score of ≥ 2+ was observed in 20 tumors (16.6%).HER2 amplification was detected by CISH in 19 tumors (15.8%) and in their matched lymph node metastases.A high concordancerate was found between HER2 positivity (as detected by IHC) and HER2 gene amplification (as detected by CISH),since 19 of the 20 IHC positive cases were amplified (95%).All amplified cases had 2+ or 3+ IHC results.Amplification was associated with intestinal phenotype (P < 0.05).No association with grading,staging or survival was found.CONCLUSION:In gastric cancer,HER2 amplification is the main mechanism for HER2 protein overexpression and is preserved in lymph node metastases.

High levels of serum platelet-derived growth factor-AA and human epidermal growth factor receptor-2 are predictors of colorectal cancer liver metastasis

AIM To develop predictive markers in blood for colorectal cancer liver metastasis.METHODS Twenty colorectal cancer patients were selected and divided into two groups. Group A consisted of 10 patients whose pathological TNM stage was ⅢC(T3-4N2M0), while another 10 patients with synchronous liver metastasis(TNM stage Ⅳ) were recruited for group B. During the surgical procedure, a 10-ml drainage vein(DV) blood sample was obtained from the DV of the tumor-bearing segment prior to the ligation of the DV. At the same time, a 10-ml peripheral vein(PV) blood sample was collected via peripheral venipuncture. The serum levels of 24 molecules that are potentially involved in the mechanism of liver metastasis in both DV blood and PV blood were analyzed by using high-throughput enzyme-linked immunosorbent assay technology.RESULTS Univariate analysis revealed that platelet-derivedgrowth factor AA(PDGFAA) in DV blood(d PDGFAA)(P = 0.001), PDGFAA in PV blood(p PDGFAA)(P = 0.007), and human epidermal growth factor receptor-2 in PV blood(p HER2)(P = 0.001), p MMP7(P = 0.028), pR ANTES(P = 0.013), and pE GF(P = 0.007) were significantly correlated with synchronous liver metastasis. Multivariate analysis identified d PDGFAA(HR = 1.001, P = 0.033) and p HER2(HR = 1.003, P = 0.019) as independent predictive factors for synchronous liver metastasis. Besides, high peripheral HER2 level may also be a risk factor for metachronous liver metastasis, although the difference did not reach statistical significance(P = 0.06). Significant correlations were found between paired DV and PV blood levels for PDGFAA(r = 0.794, P < 0.001), but not for HER2(r = 0.189, P = 0.424).CONCLUSION PDGFAA in tumor drainage and HER2 in PV blood may be useful predictive factors for synchronous liver metastasis of colorectal cancer.

Tyrosine kinase inhibitors and human epidermal growth factor receptor-2 positive breast cancer

The body of evidence investigating human epidermal growth factor receptor-2(HER2)directed therapy in patients with breast cancer(BC)has been growing within the last decade.Recently,the use of tyrosine kinase inhibitors(TKIs)has been of particular interest in the treatment of human malignancies.This literature commentary is intended to highlight the most recent findings associated with the widely-studied TKI agents and their clinical significance in improving the outcomes of HER2 positive BC.

宫颈鳞癌中高危型HPV感染与Her-2、PTEN表达的相关性研究

目的探究宫颈鳞癌中高危型人乳头瘤病毒(HPV)感染与人表皮生长因子受体-2(Her-2)、第十号染色体缺失的磷酸酶张力蛋白同源物基因(PTEN)表达的相关性。方法采取分层随机分组方法取2018年8月至2021年7月期间的高危型HPV感染的宫颈鳞癌根治标本50例宫颈鳞癌患者为A组,同时期的高危型HPV感染的宫颈活检标本40例宫颈上皮内病变患者为B组,非高危型HPV感染的宫颈活检标本30名健康同龄者为C组。检测及比较A组与B组的病变组织及C组的正常上皮组织Her-2及PTEN表达结果及高危型HPV感染率,并比较其在A组中的不同年龄、肿瘤直径、国际妇产科联盟(FIGO)分期、组织学分级、宫颈间质浸润深度、有无脉管内癌栓、有无神经束侵犯及淋巴结转移者的检测结果,采用Spearman分析法进行处理和分析宫颈鳞癌中高危型HPV感染与Her-2、PTEN表达的相关性。结果A组中Her-2阳性表达率及高危型HPV感染率高于B组及C组、B组高于C组(P<0.05);A组的组织PTEN阳性表达率低于B组及C组,B组低于C组(P<0.05)。Ⅰ~Ⅱ期Her-2、PTEN阳性表达率及高危型HPV感染率高于Ⅲ期、G1~G2级Her-2、PTEN阳性表达率及高危型HPV感染率高于G3级、有淋巴结转移者Her-2及PTEN表达结果及高危型HPV感染率低于无淋巴结转移者(P<0.05)。宫颈鳞癌中高危型HPV感染与Her-2表达呈正相关,与PTEN表达呈负相关(P<0.05)。结论宫颈鳞癌中高危型HPV感染、Her-2和PTEN的阳性表达存在异常,且三者之间关系密切,宫颈鳞癌中HER-2高表达,PTEN低表达,高危型HPV感染与Her-2表达呈正相关、与PTEN表达呈负相关,三者在宫颈病变患者中有较高的检测价值。

标准化碘浓度与胃癌组织中HER2表达的关系

目的:探讨标准化碘浓度与胃癌人表皮生长因子受体2(human epidermal growth factor receptor 2,HER2)表达的相关性,从而间接评价胃癌的生物学特性.方法:回顾性分析61例郑州大学第一附属医院胃癌患者的双能量CT扫描资料,分别测量动、静脉期病灶及同层主动脉的碘浓度,计算标准化碘浓度(normalized iodine concentration,NIC).应用免疫组织化学方法检测胃癌中HER2的表达,用统计学方法分析NIC与HER2的相关性.结果:19例(31.15%)患者HER2表达阳性.H E R2阳性组的动、静脉期的N I C分别为0.298±0.399、0.677±0.868,均高于阴性组,且差异具有统计学意义(P<0.05);动、静脉期的胃癌组织NIC与HER2呈中度正相关,相关系数分别为0.772、0.788;静脉期的相关性高于动脉期.结论:胃癌组织的NIC与胃癌病灶中的HER2的表达具有一定的相关性,能较好的评估胃癌的生物学特性.

护理风险管理在赫赛汀治疗Her-2过度表达乳腺癌患者中的应用

目的：探讨护理风险管理在赫赛汀治疗人表皮生长因子受体2（Her-2）过度表达乳腺癌中的应用效果。方法：回顾性调查2013年1~12月在我院接受赫赛汀治疗的乳腺癌患者9例（102例次）护理风险事件18例次,根据风险事件的原因制定控制风险事件发生的策略;将2014年1~12月进行护理风险管理后患者11例（124例次）,与实施风险管理前的护理风险事件及满意度进行比较。结果：实施护理风险管理前后比较,护理风险事件明显减少,患者满意度显著提高,差异均有统计学意义（P〈0.05）。结论：在赫赛汀治疗Her-2过度表达乳腺癌中实施护理风险管理是可行的,能够有效减少护理风险事件的发生率,预防护理纠纷,提高患者满意度,可在临床中推广应用。

荧光原位杂交与免疫组化对乳腺癌HER-2检测的对比研究

目的探讨荧光原位杂交技术（FISH）检测石蜡标本乳腺癌HER-2基因和免疫组化法（1HC）检测HER-2蛋白表达的结果。方法采用荧光原位杂交技术（FISH）和免疫组化技术（IHC）分别检测203例乳腺癌患者手术切除标本的HER-2基因和HER-2蛋白表达，对两种方法检测结果进行对比分析。结果203例HER2IHC结果阳性110例（54％），阴性93例（46％）；FISH结果阳性60例（阳性率29％），阴性143例（71％）。93例HER-2蛋白为阴性的患者中，HER-2基因表达阴性的87例，符合率93．6％（87／93）；58例HER-2蛋白为＋的患者中，HER-2基因表达为阳性的11例，符合率为19．0％（11／58）；29例HER-2蛋白为＋＋的患者中，HER-2基因表达为阳性的22例，符合率75．9％（22／29）；23例HER-2蛋白为卅的患者中，HER-2基因表达为阳性的21例，两者符合率为91．3％（21／23）。结论对于IHC法初筛为阴性（-）或强阳性（卅）的患者两种方法检测的符合率（≥91．3％）较高，可选择性的进行FISH实验，尤其对于50岁以上年龄组的患者符合率（≥97．7％）更高，而对于IHC法初筛为阳性（＋～＋T）的患者应再进行FISH实验以确定HER-2基因的状态。

HER2突变非小细胞肺癌患者的临床特征和疗效

1文献来源 Mazieres J, Peters S, Lepage B, et al. Lung cancer that harbors an HER2 mutation ： Epidemiologic characteristics and therapeutic perspectives [ J ]. J Clin Oncol, 2013,31 （16） ： 1997- 2003.

HER-2在胃癌中的研究进展

人类表皮生长因子受体2(HER-2)是一种原癌基因,其与多种肿瘤的发生、发展及预后关系密切,通过下游信号的转导参与肿瘤细胞增殖、凋亡、浸润及转移等的调控。HER-2的过表达与肿瘤患者不良总体预后相关。作为胃癌预后指标、治疗反应预测指标、治疗靶点,其可预测新辅助化疗的疗效,HER-2已成为国际肿瘤生物治疗的热点。该文就HER-2的生物学特征、作用机制、检测方法及与胃癌生物学行为关系的研究作一综述。

IVIM-DWI参数与乳腺浸润性导管癌预后因子ER、c-erbB-2的相关性

目的:探讨体素内不相关运动扩散加权成像(IVIM-DWI)参数与乳腺浸润性导管癌预后因子雌激素受体(ER)、人类表皮生长因子受体(c-erb B-2)的相关性。方法:回顾性分析42例乳腺浸润性导管癌患者的IVIM-DWI图像和免疫组织化学染色结果。采用Kruskal-Wallis检验及Spearman等级相关分析比较不同ER、c-erb B-2表达强度组间IVIM-DWI参数f值、D值、D*值的差异及其相关性。结果:不同ER表达强度组间f值、D*值存在统计学差异(P<0.05);且f值、D*值与ER表达强度存在弱负相关(r=-0.334,r=-0.281;均P<0.05)。不同c-erb B-2表达强度组间f值、D值、D*值差异均无统计学意义(P>0.05)且与c-erb B-2表达强度无明显相关性(P>0.05)。结论:f值、D*值与不同ER表达强度组间存在相关性,可为乳腺浸润性导管癌患者提供有价值的组织学信息。

^(131)I和高能X线对HER-2高表达乳腺癌细胞BT474杀伤效应的比较

目的比较放射性131I与高能X线对人类表皮生长因子受体-2(HER-2)高表达乳腺癌细胞BT474的杀伤效应,为临床放射免疫治疗(RIT)提供依据。方法采用免疫组化法检测BT474细胞HER-2基因表达。取对数生长期BT474细胞,分别行放射性核素131I培养和高能X线外照射,并按射线吸收剂量分为0、2、4、6、8 Gy 5个亚组,以克隆形成实验分析细胞存活率,根据多靶单击模型绘制细胞存活曲线,计算反映放射敏感性的指标准域剂量(Dq)、平均致死剂量(D0)、2 Gy照射的存活分数(SF2)。结果免疫组化染色显示BT474细胞呈HER-2蛋白高表达。131I和高能X线外照射后BT474细胞的D0分别为1.725、1.786,Dq分别为0.415、-0.762;SF2分别为22.650%、37.922%,差异无统计学意义(P>0.05,t=3.643)。结论放射性核素131I低剂量持续辐射与高能X线外照射对乳腺癌BT474细胞可产生相当的杀伤效应,前者因对正常组织损伤小而更适于RIT。

基于HER2靶标的抗体偶联药物T-DM1内吞机制研究

目的:研究抗体偶联药物T-DM1与乳腺癌细胞SKBR3表面人表皮生长因子受体2(HER2)的相互作用及内吞机制。方法:采用基于表面等离子共振(SPR)原理的Biacore方法测试配体T-DM1与受体HER2的相互作用,通过流式细胞仪测定药物在体外内吞清除率,利用激光扫描共聚焦显微镜原位检测药物在细胞中的内吞过程。结果:T-DM1与HER2具有高亲和力,ka为6.234×10~6mol/(L·s),kd为3.077×10^(-4)/s,KD为4.936×10^(-11)mol/L,流式细胞实验证明受体与配体的结合具有饱和性;利用免疫荧光方法检测到T-DM1在SKBR3细胞内的消除呈时间-剂量依赖关系,实验表明4 h内荧光强度减低32%,48 h时降低约90%;共聚焦显微镜实验表明T-DM1先与SKBR3细胞表面的HER2受体结合,进入细胞内,反应1 h到达溶酶体,48 h时在显微镜下已消失。结论:T-DM1与HER2具有高亲和力及结合饱和性,在1 h内通过HER2介导内吞进入细胞,随后定位于溶酶体,最后于48 h裂解。

HER2 in gastric cancer: Comparative analysis of three different antibodies using whole-tissue sections and tissue microarrays

AIM:To compare the performance of three commercially available anti-human epidermalgrowth factor receptor 2(HER2)antibodies in whole-tissue sections and tissue microarrays(TMAs)of a series of gastric tumors.METHODS:We present a comparative analysis of three anti-HER2 antibodies(HercepTest,4B5 and SP3)using TMA and whole-tissue sections prepared from the same paraffin blocks of 199 gastric adenocarcinomas operated upon between January 2004 and December2008 at a Brazilian cancer hospital.The data on the patients’age,sex,the anatomical location of the tumor and the Lauren’s histological classification were collected from clinical and pathological records.The immunohistochemical(IHC)results were examined by two pathologists and the cases were classified as positive(3+),equivocal(2+)and negative(0 or 1+),according to the criteria of the IHC scoring system of gastric cancer.TMAs and whole-tissue sections were evaluated separately and independently.All cases yielding discordant IHC results and/or scored as 2+were subjected to dual-color in situ hybridization in order to determine the final HER2 status.Besides determining the sensitivity and predictive value for HER2-positive status,we measured the accuracy of each antibody by calculating the area under the receiver operating characteristic(ROC)curve.The agreement between the results obtained using the TMAs and those obtained using the whole-tissue sections was assessed by means of Kappa coefficient.RESULTS:Intratumoral heterogeneity of HER2 expression was observed with all antibodies.HER2-positive expression(3+)in the whole-tissue sections was observed in 23 cases(11.6%)using the 4B5 antibody,in 18 cases(9.1%)using the SP3 antibody and in 10 cases(5.1%)using the HercepTest antibody.In the TMAs,11 positive cases(5.6%)were identified using SP3 antibody,9(4.6%)using the 4B5 antibody and 6(3%)using the HercepTest antibody.The sensitivity using whole-tissue sections and TMA,respectively,was 95.2%and 42.9%with 4B5,90.5%and 66.7%with SP3 and 47.6%and42.9%with HercepTest.The accuracy,calculated from the area under the ROC curve,using whole-tissue sections and TMA,respectively,was 0.91 and 0.79 by 4B5,0.86 and 0.80 by SP3 and 0.73 and 0.71 by HercepTest.The concordance of the results obtained using wholetissue sections and TMA was 97.4%(Kappa 0.75)using HercepTest,85.6%(Kappa 0.56)using SP3 and 84.1%(Kappa 0.38)using 4B5.CONCLUSION:The use of the 4B5 antibody on wholetissue sections was the most accurate IHC method for evaluating HER2 expression in gastric adenocarcinoma.

Therapeutic options for HER-2 positive breast cancer: Perspectives and future directions

During the last 15 years we have witnessed an unprecedented expansion in the drugs developed to target human epidermal growth factor receptor-2(HER-2) positive breast cancer. Trastuzumab, pertuzumab, adotrastuzumab emtansine and lapatinib are currently food and drug administration(FDA)-approved for the treatment of breast cancer patients with HER-2 overexpressed. However, given the amount of information gathered from years of uninterrupted clinical research, it is essential to have periodic updates that succinctly recapitulate what we have learnt over these last years and help us to apply that information in our daily practice. This review will pursue that objective. We will summarize the most relevant and updated informationrelated to the state of the art management of HER-2 positive breast cancer in all the clinical scenarios including the adjuvant, neoadjuvant and metastatic settings. But we will also critically appraise that literature in order to highlight some key clinical concepts that should not be overlooked. Lastly, this review will also point out some of the most promising strategies that are currently being tested and may soon become available.

A Meta-Analysis of Lymphatic Vessel Invasion Correlated with Pathologic Factors in Invasive Breast Cancer

Objectives: The invasive breast cancer is divided into four clinical subtypes: Luminal A-like, Luminal B-like, HER-2 positive, and triple-negative according to the expression status of estrogen receptor (ER), progesterone receptor(PR), human epidermal growth factor receptor-2 (HER-2) and Ki-67. The prognosis and treatment strategy vary with subtypes. The current studies have reported the relation between lymphatic vessel invasion (LVI) and the expression status of ER, PR, HER-2, Ki-67 in invasive breast cancer, but the results were debatable. So the meta-analysis was conducted to confirm the relation between LVI and the four factors. Methods: Literature was searched by entering the terms: breast AND (neoplasm OR cancer OR carcinoma) AND (lymphovascular OR “lymph vessel” OR “lymphatic vessel” invasion OR carcinoma embolus) AND (ER OR estrogen receptor OR PR OR progesterone receptor OR HER-2 OR human epidermal growth factor receptor-2 OR Ki-67 OR clinicopathological) in Pubmed. The merged odds ratio (OR) and 95% confidence interval (CI) were estimated using fixed-effect model. Review Manager 5.2 was used to analysis the relation between LVI and the expression status of ER, PR, HER-2, Ki-67 in invasive breast cancer respectively. The fail-safe number was used to estimate publication bias. Results: The analysis included 5 studies, LVI positive rate was significant lower in ER positive, PR positive, HER-2 negative, low Ki-67 expression group statistically. The OR and 95% CI were 0.6(0.44 - 0.81), 0.64(0.43 - 0.95), 1.52(1.03 - 2.24), 5.29(1.53 - 18.35) respectively.Conclusions:?LVI was significantly correlated with the expression status of ER, PR, HER-2 and Ki-67 in invasive breast cancer. Furthermore, LVI was consistent with poor prognostic expression status of the four factors.

Repurposed anti-cancer epidermal growth factor receptor inhibitors: mechanisms of neuroprotective effects in Alzheimer’s disease

Numerous molecular mechanisms are being examined in an attempt to discover disease-modifying drugs to slow down the underlying neurodegeneration in Alzheimer’s disease.Recent studies have shown the beneficial effects of epidermal growth factor receptor inhibitors on the enhancement of behavioral and pathological sequelae in Alzheimer’s disease.Despite the promising effects of epidermal growth factor receptor inhibitors in Alzheimer’s disease,there is no irrefutable neuroprotective evidence in well-established animal models using epidermal growth factor receptor inhibitors due to many un-explored downstream signaling pathways.This caused controversy about the potential involvement of epidermal growth factor receptor inhibitors in any prospective clinical trial.In this review,the mystery beyond the under-investigation of epidermal growth factor receptor in Alzheimer’s disease will be discussed.Furthermore,their molecular mechanisms in neurodegeneration will be explained.Also,we will shed light on SARS-COVID-19 induced neurological manifestations mediated by epidermal growth factor modulation.Finally,we will discuss future perspectives and under-examined epidermal growth factor receptor downstream signaling pathways that warrant more exploration.We conclude that epidermal growth factor receptor inhibitors are novel effective therapeutic approaches that require further research in attempts to be repositioned in the delay of Alzheimer’s disease progression.

RNA干扰DNA修复蛋白Ku80对乳腺癌基因HER2表达的影响

目的 构建特异性沉默Ku80基因的真核表达栽体,检测其对乳腺癌基因HER2表达的影响.方法 设计2条表达短发夹RNA的互补DNA序列,分别克隆至真核表达载体pGCsi-U6/Neo/DsRed构建shRNA-Ku80,转化大肠埃希菌DH5α菌株扩增后,提取质粒测序分析,以相同的方法构建并鉴定Ku80基因的真核表达载体pEGFP-N1-Ku80;将2种shRNA-Ku80分别与pEGFP-N1-Ku80共转染HEK293细胞株,通过流式细胞仪检测荧光强度筛选高效敲减靶点,并在基因和蛋白水平观察抑制Ku80对乳腺癌基因HER2表达的影响.结果 成功构建Ku80特异性shRNA表达载体,shR-NA-Ku80对靶点Ku80敲减效率达到59.50％,抑制Ku80表达使乳腺癌基因HER2在基因和蛋白水平明显降低.结论 成功构建shRNA-Ku80载体,在体外可有效抑制Ku80的表达,使癌基因HER2的表达明显下调,提示Ku80有望成为乳腺癌治疗的基因靶点.

Correlation of expression of ER,PR and c-erbB-2 with ultrasonographic features in invasive ductal cancer of breast

Objective To analyze the relationship of the expression level of estrogen receptor(ER),progesterone receptor(PR)and human epidermal growth factor receptor-2(HER-2,c-erbB-2)of breast invasive ductal carcinoma(IDC)with ultrasonographic characteristics.Methods Totally 104 patients with IDCs confirmed pathologically were involved in this study.ER,PR and c-erbB-2 expression in the IDC specimens was determined by immunohistochemical staining technique.The correlation between the ultrasonographic features and the positive expression of ER,PR or c-erbB-2 was analyzed.Results The positive expression rate of ER and PR in the group with tumor spiculation sign and posterior acoustic attenuation was higher than that in the group without.The positive expression rate of ER differed significantly(P<0.05)while that of PR did not(P>0.05).The over-expression rate of c-erbB-2 in the group of microcalcification,sufficient blood flow and axillary lymph node metastasis was higher than that in the group of non-microcalcification,deficient blood flow or without axillary lymph node metastasis(P<0.05).The expression of ER,PR and c-erbB-2 was not related to the size of tumor(P>0.05).Conclusion The expression of ER and c-erbB-2 is closely related to the ultrasonographic characteristics of IDC,which may,to some extent,reflect the expression level of ER and c-erbB-2.

Effect of Herceptin combined with paclitaxel neoadjuvant chemotherapy on the proliferation viability of HER-2 positive breast cancer cell

Objective: To study the effect of Herceptin combined with paclitaxel neoadjuvant chemotherapy on the proliferation viability of HER-2 positive breast cancer cell. Methods:The patients who were diagnosed with breast cancer and received neoadjuvant chemotherapy in Ziyang First People's Hospital between February 2015 and October 2017 were selected and randomly divided into the experimental group who received Herceptin combined with docetaxel chemotherapy and the control group who received epirubicin combined with docetaxel chemotherapy. After chemotherapy ended, serum levels of tumor markers were measured;after surgical resection, the breast cancer lesions were collected to measure the mRNA expression of proliferation genes and tumor suppressor genes. Results: The differences in tumor marker levels as well as proliferation gene and tumor suppressor gene expression were statistically significant between the two groups;CA15-3, IGF-1, TSGF and TPS levels in serum as well as CyclinD1, PCNA, Bcl-2, Survivin and VEGF mRNA expression in breast cancer lesions of experimental group were lower than those of control group whereas PTEN, Bax, ARID1A, FasL and Caspase-3 mRNA expression in breast cancer lesions were higher than those of control group. Conclusion: Herceptin combined with paclitaxel neoadjuvant chemotherapy can more effectively inhibit the proliferation activity of HER-2 positive breast cancer cells than epirubicin combined with paclitaxel chemotherapy.