新辅助化疗后Ki-67表达变化对乳腺癌预后的影响及其与分子分型的关系

目的:探讨新辅助化疗(NCT)后Ki-67表达改变对乳腺癌预后的影响及与分子分型的关系。方法:回顾2010—2013年收治的121例接受NCT的II A~III C期乳腺癌患者资料,分析NCT后Ki-67表达变化与乳腺癌预后的关系以及其在不同分子分型中的差异。结果:NCT前Ki-67表达与患者肿瘤大小(r=0.181,P=0.047)、组织学分级(r=0.340,P0.001)及HER-2表达(r=0.335,P0.001)呈正相关。全组患者3年无病生存率(DFS)为73.4%,其中NCT后Ki-67减少、增加、不变患者中3年DFS分别为82.6%、61.1%、68.4%,差异有统计学意义(P=0.034);而不同分子亚型3年DSF分别为Luminal A型70.7%、Luminal B型71.4%、HER-2阳性型80.7%、基底样型(78.7%),4组间差异无统计学意义(P=0.857)。族别、治疗前HER-2状态、病理腋窝淋巴结及NCT前后Ki-67表达改变是乳腺癌患者DFS的独立影响因素(均P0.05)。结论:乳腺癌NCT后Ki-67的变化是乳腺癌患者DFS的独立影响因素,但其变化的影响与乳腺癌的分子分型无明显关系。     

乳腺癌根治术后早期化疗对患者临床预后的影响

目的:探讨乳腺癌根治术后不同时间开始化疗对患者临床预后的影响。方法:自2012年1月—2013年1月,前瞻性收集我院收治的乳腺癌患者100例,根据患者术后化疗时间,将患者分为观察组(开始时间3周)和对照组(开始时间3~8周)。主要观察指标包括临床疗效(无进展生存期、生存率和复发率)和安全性(治疗相关并发症和健康相关的生存质量)。结果:与对照组相比,观察组患者无进展生存期明显延长(P=0.049);3年复发率明显降低(20.00%vs.38.00%,P=0.047)。两组患者生存率无统计学差异(94.00%vs.92.00%,P=1.000)。观察组患者术后1年健康相关的生存质量显著高于对照组[(73.00±12.16)vs.(64.64±10.58),t=3.677,P=0.000]。两组患者主要治疗相关并发症包括骨髓抑制、贫血、腹泻、恶心和呕吐等差异均无统计学意义(P0.05)。结论:术后早期化疗有助于延长乳腺癌患者无进展生存期,改善患者术后生存质量。     

HGF在浸润性乳腺癌中的表达及其对化疗敏感性和预后的影响

目的:探讨肝细胞生长因子(HGF)在乳腺癌组织中的表达水平变化及与患者远期预后、化疗敏感性的关系。方法:选取121例经病理学证实为浸润性乳腺癌的患者,采用免疫组化染色方法观察术前未接受放化疗治疗的55例乳腺癌患者癌组织中HGF的表达水平,分析术前接受新辅助化疗的66例浸润性乳腺癌患者中不同HGF表达情况与患者预后的关系;检测下调HGF后乳腺癌MCF-7细胞与表阿霉素共培养的细胞增殖情况。结果:121例浸润性乳腺癌患者有77例(63.64%)患者乳腺癌组织中HGF表达阳性;HGF表达阳性、阴性患者的肿瘤分化程度、TNM分期、淋巴结转移率有关(均P0.05)。HGF阳性表达患者新辅助化疗缓解率明显低于阴性组的(50.00 vs.86.67%,P0.05),5年存活率明显低于阴性患者的(63.98%,vs.86.67%,P0.05);MCF-7细胞HGF表达下调后对表阿霉素的敏感性明显增高(P0.05)。结论:HGF在乳腺癌组织中的表达与肿瘤分化程度、TNM分期、淋巴结转移相关,阳性表达会影响患者的化疗效果,下调HGF表达可增强乳腺癌细胞对化疗的敏感性。     

乳腺癌术后局部复发的治疗及预后分析

目的 探讨乳腺癌术后局部复发的治疗方案及影响预后的相关因素.方法回顾性分析天津肿瘤医院2002年7月至2005年2月期间收治的477例乳腺癌术后复发患者的临床资料.结果 477例复发病例中,术后1年内复发占26.2%(125/477),2年内复发占61.2%(292/477).局部复发后远处转移率为65.0%(310/477),复发后5年总生存率48.4%.不同复发部位、临床分型、有无放射治疗、放射治疗范围、有无手术切除或切除活检的亚组之间局部控制率的差异有统计学意义(P<0.05).不同原发肿瘤分期、无病间期、临床分型以及治疗方式的亚组间远处转移率及5年总生存率的差异有统计学意义(P<0.05),多因素分析显示治疗方案单一、原发肿瘤分期晚、三阴型乳腺癌是影响复发性乳腺癌预后的独立危险因素(P<0.05).结论 多部位复发者和三阴型乳腺癌局部控制不佳,局部扩大野放射治疗结合手术治疗是改善局部控制率的必要模式.原发肿瘤分期晚、2年内复发、三阴型的乳腺癌复发后容易发生远处转移,对于复发性乳腺癌采取综合治疗方案可以提高患者的生存率.

Abstract：

Objective To explore an optimal treatment and to study the prognosis related factors of breast cancer patients with local recurrence after mastectomy. Methods From 2002. 7 to 2005. 2, 477female patients with loco-regional recurrence of breast cancer treated in Tianjin Cancer Hospital were analyzed retrospectively. Results In 477 cases, recurrence within 1 year after mastectomy accounted for 26. 2% , recurrence within 2 years accounted for 61. 2%. There were 310 cases with metastasis after local recurrence was diagnosed, accounting for 65.0%. 5-year total survival rate after recurrence is 48.4%.Local control rates varied in subgroups with different recurrence site, clinical subtypes, radiotherapy fields,with or without radiotherapy, surgical resection or excisional biopsy ( P<0. 05 ). There was a statistical difference in distant metastasis rate and 5-year survival rate among subgroups which had different clinical stage of primary tumor, disease-free interval, clinical subtypes or treatment methods ( P<0. 05 ). Simplistic treatment option, late clinical stage of primary tumor and triple-negative breast cancer were the independent factors predicting poor prognosis for recurrent breast cancer ( P<0.05 ). Conclusions Multi-site recurrence and triple-negative breast cancer lead to a poor local control. Local expansion of radiotherapy combined with surgery improves the local control rate. Patients with late clinical stage of primary tumor,recurrence within 2 years, triple-negative breast cancer are likely to have distant metastasis when recurrence is diagnosed. Combined treatment program improves survival rate.     

淋巴结阴性乳腺癌的预后和辅助化疗

作者报道了４３９例经手术治疗,病理证实无区域淋巴结转移的单侧原发性乳腺癌,分析了术后辅助化疗对患者预后的影响。按寿命表法计算生存率。结果显示：淋巴结阴性乳腺癌的主要临床预后因素：（１）肿瘤大小,当肿瘤≤３ｃｍ时,单纯手术组与辅助化疗组的１０年生存率分别为９２．６０％和９４．１３％;肿瘤＞３ｃｍ时,单纯手术组为７９．８９％,辅助化疗组为９６．０２％（Ｐ＜０．０１）,差异有显著意义。（２）不管年龄、绝经与否、肿瘤病理分型、手术方式和雌激素受体测定等分型均显示辅助化疗组的疗效优于单纯手术组（Ｐ＜０．０５～０．００１）。作者认为,对肿瘤≤３ｃｍ的淋巴结阴性乳腺癌的术后辅助化疗的差别不明显,应寻找更强的指标,以决定辅助化疗与否。对肿瘤＞３ｃｍ、ＥＲ阴性者术后辅助化疗能提高生存率,对淋巴结阴性的乳腺癌手术范围可适当缩小,特别是肿瘤＜３ｃｍ时可以更多考虑行乳腺癌改良根治术。     

Her-2/neu表达对无淋巴结转移早期胃癌患者预后的影响

目的：探讨Her-2/neu表达及临床病理特征对无淋巴结转移的早期胃癌患者预后的影响。 方法：收集70例有完整随访记录和病理组织蜡块保存完整的无淋巴结转移的早期胃癌根治手术切除患者资料,采用免疫组化法检测病理组织切片Her-2/neu表达情况,分析Her-2/neu表达及临床病理因素与患者预后的关系。 结果：全组Her-2/neu阳性表达率为25.0%,Her-2/neu表达与患者的性别、年龄、肿瘤大小、分化类型及浸润深度均无明显关系（均P>0.05）。全组5年生存率为87.8%。单因素分析显示,患者性别、年龄、肿瘤大小、肿瘤浸润深度及分化程度对患者生存状况无明显影响（均P>0.05）。Her-2/neu表达阳性患者的5年生存率72.0%,阴性患者为93.0%,差异有统计学意义（P<0.05）。多因素回归分析显示,Her-2/neu的表达为影响预后的危险因素（OR=5.036,P=0.035）。 结论：Her-2/neu的表达是影响无淋巴结转移早期胃癌患者预后的危险因素,并对早期胃癌的临床治疗有一定指导意义。     

乳腺癌术后辅助化疗的进展

自上世纪50年代Fisher提出“乳腺癌是一种全身性疾病”的重要概念后，乳腺癌的诊治发生了重大的革新。系统性辅助治疗在乳腺癌治疗中的地位得到广泛重视。在乳腺癌新发病例逐年增加的背景下，死亡率却在逐年下降，其中术后辅助化疗的作用功不可没。在全世界范围内针对乳腺癌的辅助化疗已进行了大量的临床研究。在强调循证医学的今天．如何更合理地为病人选择化疗方案、最大程度改善病人预后．是摆放在我们面前的重大课题。熟悉和掌握这些研究结果是从事乳腺癌治疗的基本要求。     

HER2过度表达乳腺癌的辅助治疗研究进展

HER2基因与乳腺癌的发生发展及转移有密切关系 ,HER2过度表达与化疗、内分泌治疗抵抗有关 ,进一步的标准化检测及分析方法将对HER2在肿瘤中深入研究起到推动作用。     

FTO基因在乳腺癌组织的表达及新辅助化疗对其表达的影响

目的：探讨FTO基因在原发性乳腺癌组织中的表达及新辅助化疗对其表达的影响。 方法：应用RT-PCR方法检测28例乳腺增生病组织和24例乳腺癌组织及10例乳腺癌新辅助化疗前后组织中FTO mRNA的表达水平,并分析FTO基因表达水平与乳腺癌患者临床病理参数的关系。 结果：FTO基因在乳腺增生组织及乳腺癌组织均有表达,而在乳腺癌表达高于乳腺增生组织（P<0.05）;新辅助化疗后乳腺癌组织FTO mRNA的表达水平低于化疗前（P<0.05）;乳腺癌组织FTO mRNA表达水平与淋巴结转移有关,FTO mRNA的表达量在淋巴结转移组高于未转移组（P<0.05）,而与ER,PR受体,CerbB-2基因状态及肥胖无关（均P>0.05）。 结论：FTO基因在乳腺癌组织中表达增加,且可能与乳腺癌发生发展有关;新辅助化疗可以下调乳腺癌组织FTO基因的表达。     

HER2阳性乳腺癌患者新辅助化疗后免疫分型变化的研究

目的探讨HER2阳性乳腺癌新辅助化疗后雌激素受体(ER)、孕激素受体(PR)、细胞增殖核抗原Ki－67(Ki－67)、HER2变化。 方法回顾性分析2012年1月至2017年12月进行乳腺癌新辅助化疗且HER2为阳性的患者66例资料。所有患者化疗前行经超声引导下穿刺取病理活检,并于术后行病理检查。采用SPSS19.0统计学软件处理,观察患者在辅助化疗前后ER、PR、Ki67、HER2水平变化,采用(例,%)表示,行卡方检验,以P<0.05为差异有统计学意义。 结果66例HER2阳性乳腺癌新辅助化疗患者化疗后,PR出现上调表达最高,为19.32%,同时也是下调表达最高,为25.57%;ER保持不变比例最高(74.43%);Ki67下调率为23.86%,明显高于上调率的12.50%,保持不变比例63.64%;66例患者中7例患者经过新辅助化疗后HER2转为阴性,转阴率为10.61%。 结论HER2阳性乳腺癌新辅助化疗后部分患者的ER、PR、会出现上调或者下调的变化,Ki－67出现一定比例的下降、HER2部分转阴,这种变化对乳腺癌的分型以及术后治疗药物的选择均会产生影响。     

Evaluation of HER2/neu oncoprotein in serum and tissue samples of women with breast cancer: Correlation with clinicopathological parameters

BackgroundHER2/neu (HER2) is a proto-oncogen of the EGF Receptor family. The assessment of serum HER2 level is useful for predicting the patients’ response to chemotherapy or hormonal therapy and selection of proper patients for treatment with Herceptin.We aimed to compare serum HER2 levels with immunohistochemistry in tumoral tissues and investigate correlation between these levels and various prognostic factors.Materials and methodsThis cross-sectional study was conducted on 75 patients with breast carcinoma referred to surgical ward of Mashhad Imam Reza’s hospital from November 2008 to February 2009. Pre-operative serum samples were collected and stored in ?20 °C.Surgical samples were investigated for the type of carcinoma, tumor size, lymph node metastasis, stage as well as grade of the tumor. Tissue HER2 over-expression was evaluated by immunohistochemistry (IHC) staining and HER2 levels were studied by ELISA method. Statistical analysis was performed by SPSS software.ResultsSerum HER2 cut-off level was 18.4 ng/ml; 46.7% of patients were serum HER2-positive and 43% were IHC positive. There was a high statistical correlation between these two parameters (P = 0.018).Statistically, there was no significant correlation between serum HER2 and age, tumor size, stage, grade and metastatic lymph nodes (P > 0.05).ConclusionSerum HER2 level assay can be considered as a complementary method besides tissue methods.     

Comparison of serum HER2/neu with immunohistochemical HER2/neu expression for the prediction of biochemical progression in metastatic prostate cancer

Objectives:   To examine whether pretreatment serum human epidermal growth factor receptor 2 (HER2/neu) and immunohistochemical HER2/neu expression predict biochemical recurrence-free survival in advanced prostate cancer.
Methods:   We studied 75 untreated patients with metastatic prostate cancer and compared them to a control group of 97 patients without histologically diagnosed prostate cancer. Serum samples were collected for HER2/neu protein analysis before the patients started endocrine therapy. HER2/neu expression in the prostate tissue was evaluated using immunohistochemical analysis.
Results:   Serum concentration of HER2/neu in patients with prostate cancer was significantly higher than in those without cancer ( P  = 0.005). Based on the median HER2/neu value, a cut-off level of 12.5 ng/mL was established to separate low from high serum HER2/neu levels. The biochemical recurrence-free survival rate was significantly lower in patients with a high serum HER2 level ( P  < 0.001). HER2/neu overexpression was found in 18 patients (24%) by immunohistochemical analysis. Biochemical recurrence-free survival rates did not show a statistically significant difference between HER2/neu positive and negative groups. Multivariate analysis showed that the pretreatment serum HER2/neu value was an independent predictor of biochemical recurrence ( P  = 0.02).
Conclusions:   Pretreatment serum HER2/neu may represent a more valuable tool than immunohistochemical HER2/neu expression for the prediction of biochemical recurrence in metastatic prostate cancer patients.     

Locoregional recurrence in patients with HER2 positive breast cancer

Literature shows that HER2/neu positive breast cancer cells are more sensitive to radiation-induced apoptosis by targeting the epidermal growth factor receptor family tyrosine kinase. We selected 466 patients with pT1-2 HER2/neu positive tumors who received adjuvant trastuzumab for primary invasive breast cancer. Patients were divided into three groups [Quadrantectomy followed by conventional radiotherapy vs Quadrantectomy followed by Intra-operative radiotherapy with electrons vs Mastectomy without radiotherapy]. After a median follow-up of 52 months, the 5-year cumulative incidence of locoregional recurrence (LRR) was 1.9%, 11.5% and 5.0% respectively (p < 0.01). At the multivariate analysis, extensive perivascular invasion, Luminal B HER2/Progesterone Receptor (PgR) negative status and Quadrantectomy followed by Intra-operative radiotherapy with electrons have significantly increased the risk of LRR. Our results suggest that HER2/neu positive breast cancer might have better outcomes when treated simultaneously with external radiotherapy and trastuzumab. Moreover, we underline the importance of PgR and further new stratification of risk among luminal subtypes.     

Co-overexpression of HER2/HER3 is a predictor of impaired survival in breast cancer patients

BackgroundRecently, HER3-expression was postulated as independent risk factor for metastatic spread. Therefore, we investigated the role of HER3 expression as prognostic marker in metastatic breast cancer patients.MethodsPatients of different breast cancer subtypes diagnosed with metastatic disease (visceral and/or brain metastases) were identified from a breast cancer database. Tissue samples of the respective primary tumors were retrieved, and immunohistochemical staining for estrogen-receptor, progesterone-receptor, HER2, and HER3 was performed. In HER2 equivocal and selected HER3 positive cases, subsequent fluorescent in situ hybridization (FISH) analysis was performed.ResultsTissue specimens of 110 patients were available for this analysis. 21% had strong, complete, membranous HER3 staining of at least 10% of all tumor cells; HER3 protein expression was not associated with HER3 gene amplification. HER2/HER3 co-overexpression was observed in 12/110 (11%) specimens and HER3-overexpression showed a statistically significant association with HER2-overexpression (p = 0.02). No correlation was observed for HER3-overexpression and overall survival (OS), time to diagnosis of brain metastases, and incidence of brain metastases. Still, in patients with HER3 overexpression, a higher rate of ‘brain only’ metastatic behavior was observed (p = 0.042). In the HER2-positive subgroup, HER3-overexpression was significantly associated with shorter OS from diagnosis of metastatic disease (median 17 vs. 35 months; p = 0.04; log rank test).ConclusionsHER2/HER3 co-overexpression is significantly associated with impaired OS from diagnosis of metastatic disease in patients with HER2-positive metastatic breast cancer. Co-inhibition of HER2 and HER3 or the inhibition of HER2/HER3 hetero-dimerization may improve clinical outcome in this subgroup.     

Intratumoral heterogeneity of HER2/neu in breast cancer--a rare event

HER2/neu is overexpressed in about 20% of invasive breast carcinomas. Numerous studies have shown that there is high level of concordance between the HER2/neu status of the primary breast cancer and the metastases of a given patient. Recently, changes in HER2/neu status with tumor progression have been reported, suggesting the possibility of an emerging different tumor clone. Little is known about intratumoral heterogeneity with regard to HER2/neu oncoprotein overexpression. We identified nine cases of invasive ductal carcinoma that showed intratumoral variation in HER2/neu oncoprotein expression by immunohistochemistry. This was confirmed by the intratumoral variation in the amplification status of the HER2/neu gene by fluorescence in situ hybridization and by chromogenic in situ hybridization. The results of this study suggest that some cases of primary breast carcinoma are heterogeneous in regard to HER2/neu gene amplification or protein overexpression. Heterogeneity of HER2/neu status in a tumor may be a rare event or underestimated. This phenomenon should be examined as it may contribute to a better understanding of the variation in therapeutic responses and the conflicting data in studies about the prognostic and predictive role of HER2/neu status in subsets of breast cancer patients.     

Significance of Her-2/neu protein over expression in Indian breast cancer patients

Background  

Racial disparity in presentation and outcome of breast cancer is established but cause is unexplained. Many studies show various molecular markers for racial differences in the prognosis of breast cancer. There is scarcity of data on prognostic significance of HER-2/neu in Indian breast cancer.     

The effect of neoadjuvant chemotherapy on histologic grade, hormone receptor status, and HER2/neu status in breast carcinoma

The use of neoadjuvant chemotherapy prior to surgical resection for breast cancer is no longer restricted to patients with locally advanced disease. As preoperative treatment becomes more common, the question arises whether or not such therapy changes important tumor characteristics. The objective of our study is to compare histological grade, hormone receptor status, and HER2/neu expression pre- and post-therapy patients receiving preoperative neo-adjuvant chemotherapy. Forty patients status post-neoadjuvant treatment who had available archived pathologic material pre- and post-therapy were identified. Glass slides were reviewed retrospectively, and tumor grade, hormone receptor status, and HER2/neu expression were compared between the pre- and post-therapy specimens. No significant differences were noted between the pre- and post-specimens for two of the three parameters comprising the modified Bloom-Richardson grade, including degree of tubule formation (p = 0.062) and nuclear pleomorphism (p = 0.086). For mitotic activity, a decrease in score was observed between pre- and post-therapy specimens which was statistically significant (p = 0.021). However, there was no significant difference in the overall modified Bloom-Richardson grade (p = 0.118). Information was available regarding hormone receptor and HER2/neu status in 26 patients (65%). There was no significant difference between pre- and post-treatment specimens for hormone receptor status. However, there were more patients with HER2/neu overexpression after receiving neoadjuvant therapy (p = 0.027). Neoadjuvant therapy resulted in a significant decrease in mitotic count and an increase in the proportion of patients with HER2/neu overexpression. No significant changes were noted for the degree of tubule formation, nuclear pleomorphism, overall Bloom-Richardson score, and hormone receptor status. However, small sample size may be a limitation of these results.     

Investigating the Combination of Trastuzumab and HER2/neu Peptide Vaccines for the Treatment of Breast Cancer

Background Trastuzumab, an anti-HER2/neu monoclonal antibody, is thought to promote HER2/neu receptor internalization and/or turnover. This study was designed to investigate the kinetics of trastuzumab treatment on tumor cells with varying levels of HER2/neu expression and to determine the effect of trastuzumab on HER2/neu-specific cytotoxic T lymphocyte–mediated lysis. Methods Three cell lines with varying levels of HER2/neu expression were incubated with varying doses of trastuzumab at multiple time points. Trastuzumab binding and HER2/neu expression were determined. Peripheral blood mononuclear cells from three HLA-A2⁺ healthy donors and four E75 peptide–vaccinated patients were stimulated with HER2/neu-derived peptides and tested in standard chromium release cytotoxicity assays with HER2/neu⁺ tumor cells pretreated with trastuzumab. Results Treatment of tumor cells with 10 μg/mL of trastuzumab in an overnight incubation resulted in saturation of cell-surface HER2/neu receptors. At higher doses, trastuzumab staining and HER2/neu expression decreased in a time-dependent manner. Pretreatment of tumor cells with trastuzumab resulted in increases in specific cytotoxicity by peptide-stimulated cytotoxic T lymphocytes from HLA-A2⁺ donors over untreated cells by an average of 5.6% and 15.3% (P = .0002) for doses of 10 and 50 μg/mL, respectively. In similar experiments involving peripheral blood mononuclear cells obtained from immunized patients, the average specific cytotoxicity for untreated cells was 34.2% ± 1.3% vs. 40.6% ± 2.5% (P = .035) and 40.7% ± 1.6% (P = .0005) for those treated with 10 and 50 μg/mL, respectively. Conclusions Our data suggest that pretreatment of breast cancer cells with trastuzumab induces turnover of the HER2/neu protein and enhanced killing by HER2/neu peptide–stimulated CTLs. This increased lysis occurs regardless of the degree of HER2/neu expression and seems more pronounced in vaccinated patients. These findings support further investigation into the use of combination immunotherapy with trastuzumab and HER2/neu peptide–based vaccines. The opinions or assertions contained herein are the private views of the authors and are not to be construed as official or reflecting the views of the Department of the Army or the Department of Defense.     

HER2×CD3双抗体治疗过度表达HER2基因裸鼠乳腺癌及其机制

目的　探讨基因工程HER2×CD3双特异性抗体 (BsAb)对过度表达HER2 /neu基因人乳腺癌的治疗效果及其作用机制。方法　建立人乳腺癌异位种植转移模型。 48只裸鼠皮下接种人乳腺癌细胞株BT 474后 ,随机分成 4组 (n =12 ) ,1周后开始 ,分别腹腔内注射磷酸盐缓冲液(PBS ,1ml ,对照组 )、效应细胞 +抗CD3单克隆抗体 (Anti CD3McAb) (0 .85mg/kg ,CD3McAb组 )、效应细胞 +抗HER2单克隆抗体Herceptin(0 .85mg/kg ,Herceptin组 )、效应细胞 +HER2×CD3双特异性抗体 (0 .3 5mg/kg ,BsAb组 ) ,每周 2次 ,共用 3周。第 8周末处死动物 ,测量种植处肿瘤体积、抑瘤率、观察癌细胞转移情况 ,应用Northernblot方法检测HER2 /neumRNA的表达。结果　各组均成瘤 ;BsAb组、Herceptin组、抗CD3组、对照组肿瘤体积和抑瘤率分别为(0 .10± 0 .0 2 )、(0 .2 1± 0 .0 7)、(0 .5 4± 0 .0 5 )、(0 .84± 0 .11)cm3 和 88.1%、75 .0 %、3 7.9%、0 ;腋窝淋巴结转移率分别为 0、16.7%、45 .5 %、10 0 % ;肝转移率分别为 0、16.7%、3 6.4%、75 .0 % ;Northernblot印迹分析示HER2×CD3双特异性抗体明显抑制HER2 /neumRNA表达。Herceptin组和BsAb组乳腺癌生长和转移受到明显抑制 (P <0 .0 5 ) ,尤以BsAb组最明显 (P <0 .0 5 )。结论　基     

Paraneoplastic cerebellar degeneration with anti-Yo antibody in a patient with HER2/neu overexpressing breast cancer: a case report with a current literature review

Abstract:  Paraneoplastic cerebellar degeneration (PCD) is a rare paraneoplastic syndrome, occurring in <1% of breast cancers. We describe a 32-year-old female presenting with ataxia subsequently diagnosed with poorly differentiated breast cancer. She was serum anti-Yo antibody positive, with estrogen/progesterone receptor negative and HER2/neu receptor positive breast cancer. Neurological symptoms progressed despite modified radical mastectomy, supraclavicular lymphadenectomy, intravenous immunoglobulin, corticosteroids, transtuzumab, and combination chemotherapy. We performed a literature search, which found a possible association between anti-Yo positive PCD and HER2/neu-expressing breast cancer.