乳腺癌新辅助化疗后微钙化减少对肿瘤病理完全反应的预测

目的:探讨乳腺癌患者新辅助化疗(neoadjuvant chemotherapy,NAC)后影响微钙化(mcrocalcification,MC)改变的因素及MC减少与肿瘤病理完全反应(pathological complete response,pCR)的相关性。方法:收集2015年1月至2018年12月天津医科大学肿瘤医院215例乳腺癌患者的临床资料,分为范围改变组及数量改变组,评估影响MC改变的因素。根据MC是否减少进行分组,分为MC范围缩小组及MC数量减少组,分析不同分子分型中MC减少与pCR的相关性。采用受试者工作特征曲线(receiver operating characteristic curve,ROC)评价乳腺X线摄影(mammography,MG)检查中MC减少对pCR敏感性、特异性的预测。结果:MC呈弥散分布,范围>2 cm,数量>20个患者更易发生MC减少。MC范围缩小组较非缩小组易发生pCR。MC数量减少组与非减少组比较差异无统计学意义,分子分型不是MC范围缩小及数量减少与pCR的影响因素。MC范围缩小组预测pCR的敏感度为77.78%、特异度为5...     

预测乳腺癌新辅助化疗反应的临床病理和分子指标研究进展

新辅助化疗(NAC)增加了局部晚期乳腺癌患者的手术机会,改善了预后.但是,仍有一部分患者不能从目前使用的不同化疗方案中获益,导致疾病进展,从而失去永久治愈肿瘤的机会.识别与NAC反应有关的预测指标有助于区分对治疗反应不同的患者,以便实施个体化治疗.到目前为止,已证实多个因素可作为NAC反应的预测因子,包括肿瘤大小、组织...     

影响乳腺癌新辅助化疗后病理完全缓解的临床因素分析

目的:探讨影响乳腺癌新辅助化疗后病理完全缓解（pathological complete response,pCR）的临床因素。方法:回顾分析新辅助化疗并行根治性手术的120例女性乳腺癌患者的临床资料;所有患者均接受6~8周期EC-T方案化疗,化疗结束后2~4周行根治性手术。采用χ2检验及 Logistic 回归分析影响pCR和非pCR的临床因素。结果:疗效结果单因素分析显示:T分期、N分期、乳腺癌分子分型、治疗前Ki-67表达水平、治疗前血小板水平与乳腺癌新辅助化疗后肿瘤pCR率显著相关。Logistic二元回归分析发现乳腺癌非Luminal分子亚型和新辅助化疗前高血小板水平是影响乳腺癌新辅助化疗后pCR的独立预测因素。结论:乳腺癌非Luminal分子亚型和新辅助化疗前高血小板水平是影响乳腺癌新辅助化疗后pCR的决定性因素。     

乳腺癌新辅助化疗后病理完全缓解的因素分析

目的:研究代谢综合征（metabolic syndrome,MS）与乳腺癌新辅助化疗（neoadjuvant chemotherapy,NAC）病理完全缓解（pathological complete response,pCR）的关系。方法:收集2014年01月至2020年06月在哈尔滨医科大学附属肿瘤医院接受NAC后进行手术的女性乳腺癌患者526例,并收集患者的临床病理资料,根据MS诊断标准分为MS组99例与非MS组427例。采用Logistic回归模型进行单因素和多因素分析MS与pCR的关系。结果:105例患者NAC后获得pCR,其中MS组10例,非MS组95例。单因素分析显示:非MS组较MS组更易获得pCR（P=0.008）,激素受体（hormone receptor,HR）阴性、人类表皮生长因子受体2（human epidermal growth factor receptor-2,HER-2）阳性、Ki-67＞14%者更易获得pCR（P＜0.001、P＜0.001、P=0.002）。多因素分析显示:与HR阴性者相比,HR阳性者较难获得pCR（P＜0.001）;与HER-2阴性者相比,HER-2阳性者pCR率更高（P=0.033）;与非MS患者相比,合并MS患者更难获得pCR（P=0.041）。亚组分析显示:非MS组中HR阴性患者更易获得pCR（P＜0.001）。结论:HR状态、HER-2状态及MS是乳腺癌NAC后pCR的独立预测因素,合并代谢综合征的乳腺癌患者接受新辅助化疗后更难获得病理完全缓解,与长期预后相关性有待进一步研究。     

影响青年乳腺癌患者新辅助化疗后病理完全缓解和预后的病理因素分析

目的:探讨影响青年乳腺癌患者新辅助化疗（neoadjuvant chemotherapy,NAC）后病理完全缓解（pathological complete response,pCR）和预后的临床病理因素。方法:回顾性分析2010年01月至2018年12月我院甲乳外科收治年龄≤35岁行NAC的女性乳腺癌患者的临床病理资料。NAC后依据Miller-Payne评分系统,将患者分为pCR组和非pCR组。探讨临床病理因素对青年乳腺癌患者pCR、复发转移和死亡的影响,同时分析pCR与无病生存期（disease free survival,DFS）与总生存期（overall survival,OS）之间的相关性。结果:168例患者中pCR 37例,pCR率为22.0%。体质量指数(body mass index,BMI)、术前淋巴结状态、雌激素受体（estrogen receptor,ER）、孕激素受体（progesterone receptor,PR）、人类表皮生长因子受体2（human epidermal growth factor receptor-2,HER-2）、Ki-67、p53及分子分型与青年乳腺癌患者NAC后的pCR率关系密切（P＜0.05）。肿瘤大小、术前淋巴结状态、ER、PR、HER-2、p53及分子分型影响患者的复发转移和死亡（P＜0.05）,同时肿瘤大小、术前淋巴结状态、组织学分级、ER、PR、HER-2、Ki-67及分子分型均是DFS和OS的独立影响因素（P＜0.05）。66例复发转移患者中pCR患者7例,占pCR患者的18.9%（7/37）,pCR组和非pCR组DFS比较差异具有统计学意义（P＜0.05）。38例死亡患者中pCR患者3例,占pCR患者的8.1%（3/37）,pCR组和非pCR组OS比较差异具有统计学意义（P＜0.05）。结论:影响青年乳腺癌患者pCR和预后的临床病理因素较多,获得pCR的患者具有更好的远期预后。     

18F-FDG PET/CT预测乳腺癌新辅助化疗病理反应的价值

目的 评价早期应用18F-脱氧葡萄糖(FDG) PET/CT显像预测新辅助化疗疗效的价值;比较最大标准摄取值(maximum standard uptake value,SUVmax)和靶组织/非靶组织(target organization/non-target organization,T/NT)评估新辅助化疗疗效方面的效能,选择评价疗效的合适指标及具体数值.方法 前瞻性研究初治乳腺癌患者22例,在新辅助化疗前、第一疗程结束后及第二疗程结束后行18F-FDG PET-CT显像并计算其SUVmax和T/NT的变化率.结果 新辅助化疗有效组在第一疗程结束后SUVmax和T/NT比值下降率与无效组比较差异有统计学意义(P值均＜0.05),根据受试者工作曲线(ROC曲线)分别得到第一疗程结束后的△SUVmaxi％最佳预测疗效值为36.3％(敏感度为83.3％,特异性为80.0％),△T/N1％最佳预测疗效值为42.8％(敏感度为83.3％,特异性为86.7％);第二疗程结束后△SUVmax2％最佳预测疗效值为57.7％(敏感度为83.3％,特异性为93.3％),△T/N2％最佳预测疗效值为53.4％(敏感度为83.3％,特异性为73.3％).结论 第一疗程结束后18F-FDG PET-CT显像预测新辅助化疗疗效具有较好的可行性,支持有效者继续治疗;SUVmax在评价新辅助化疗疗效方面优于T/NT.     

乳腺癌新辅助化疗的疗效预测因子

乳腺癌的新辅助化疗已经成为乳腺癌治疗策略的一部分,并逐渐应用于早期乳腺癌[1],通过减少肿瘤体积,部分可达到保乳目的 ,而且理论上可以减少微小转移灶的播散,并观察药物的疗效。新辅     

乳腺癌新辅助化疗的回顾性研究

目的探讨新辅助化疗在乳腺癌治疗中的近期和远期临床效果，为今后开展前瞻性临床研究作准备。方法对1984～1991年我院住院手术的26例新辅助化疗乳腺癌患者和48例术前未作任何辅助治疗的乳腺癌患者作回顾性分析，资料计算化疗后对临床肿瘤退缩程度和生存率作比较。其中新辅助化疗组患者接受一个疗程的CMF方案〔环磷酰胺（CTX）600mg／m2，静脉推注，第1天和第8天；甲氨喋吟（MTX）30mg／m2，静脉推注，第1天和第8天；氟尿嘧啶（5－FU）500mg／m2，静脉滴注，第1天和第8天〕化疗后进行手术。结果新辅助化疗后4例部分缓解。在平均44个月（2～120个月）的随访中，新辅助化疗组8例出现复发（3．8％），对照组32例出现复发（66．7％），18例死于乳腺癌（37．5％）。单因素分析显示两组差别有显著意义（P相似文献   

乳腺癌新辅助化疗病理完全缓解率及影响因素分析

目的:分析影响患者新辅助化疗(neoadjuvant chemotherapy, NAC)后病理完全缓解(pathologic complete remission, pCR)的相关因素,为乳腺癌(breast cancer, BC)患者应用NAC联合保乳手术治疗方案提供参考和依据。方法:研究对象来源于2013年01月至2021年12月在山西白求恩医院乳腺外科治疗的Ⅱ-Ⅲ期女性BC患者。采集患者的人口学特征、临床病理资料以及化疗相关信息,观察肿瘤原发灶的变化评价NAC的短期疗效。结果:研究共260例研究对象,保乳手术(breast-conserving surgery, BCS)率为21.9%,pCR率为18.1%。肿瘤pCR的单因素分析中,是否哺乳(P<0.05)、ER、PR、HER-2、Ki-67表达、分子分型、靶向治疗及治疗方案均与乳腺pCR相关(P≤0.01)。多因素分析中,肿瘤分子分型与肿瘤pCR显著相关(OR=0.077,95%CI:0.022～0.262)。结论:NAC可以减小肿瘤,提高保乳率及pCR率。不同分子分型的肿瘤pCR率有显著差异,尤其是在三阴性乳腺癌患者...     

Clinical and pathological predictors of recurrence in breast cancer patients achieving pathological complete response to neoadjuvant chemotherapy

IntroductionDespite the excellent prognosis associated with pathological complete response (pCR) to neoadjuvant chemotherapy (NAC), some patients still develop recurrence. Here, we investigated the outcomes of breast cancer patients with pCR, as well as the clinical and pathological predictors of cancer recurrence in these patients.Materials and methodsOf the 1599 breast cancer patients treated with NAC, we evaluated 394 patients who achieved pCR between January 2007 and December 2016. pCR was defined as no evidence of invasive cancer in breast. Residual in situ ductal and axillary lymph node diseases were not considered. We analyzed the outcomes using the Kaplan–Meier method. We assessed the association of clinical and pathological predictors with cancer recurrence using the cox proportional hazards regression model.ResultsThe median follow-up time was 63 months. The 5-year disease-free survival rate was 92.3%. Cancer recurrence was observed in 28 patients (7.1%): local recurrence 8 patients (2.0%), visceral metastasis 10 patients (2.5%), and brain metastasis 10 patients (2.5%). Brain metastases were found in patients with HER2 type breast cancer. The significant predictors of cancer recurrence were HER2 positivity (p = 0.04), clinical tumor size (p < 0.01), and lymph node metastasis (p < 0.01) before NAC on univariate analysis and only lymph node metastasis on multivariate analysis.ConclusionPatients achieving pCR to NAC showed excellent outcomes. Advanced clinical stage, large tumor size, presence of lymph node metastasis, and HER2 positivity before NAC were identified as significant predictors of cancer recurrence. Residual in situ ductal and lymph node diseases after NAC were not significant predictors.     

Meta-analysis confirms achieving pathological complete response after neoadjuvant chemotherapy predicts favourable prognosis for breast cancer patients

Neoadjuvant chemotherapy (NAC) has become a widely accepted method of sequencing systemic therapy for breast cancer treatment. While ‘response to chemotherapy’ in the neoadjuvant setting has been utilised to predict prognosis, the published data are inconsistent. The present meta-analysis was conducted to determine whether the pathologic response to NAC predicts for outcomes. Papers were selected from the PubMed database based on defined inclusion and exclusion criteria. Parameters such as number/percentage of patients having pCR and outcome statistics (i.e. overall survival (OS), disease-free survival (DFS), relapse-free survival (RFS)) were collected. The analysis included 16 studies with 3776 patients. The summary odds ratio (OR) estimating the association of OS with pCR was 3.44 (95% confidence interval [95%CI]: 2.45-4.84), with similar findings for DFS (OR = 3.41, 95%CI: 2.54-4.58) and RFS (OR = 2.45, 95%CI: 1.59-3.80). No obvious statistical heterogeneity was detected. Funnel plots and Egger’s tests did not reveal publication bias. This meta-analysis confirms that pathologic response is a prognostic indicator for RFS, DFS and OS and suggests that patients achieving pCR after NAC have favourable outcomes.     

Diagnosis of pathological complete response to neoadjuvant chemotherapy in breast cancer by minimal invasive biopsy techniques

Background:

Neoadjuvant chemotherapy (NACT) is widely used as an efficient breast cancer treatment. Ideally, a pathological complete response (pCR) can be achieved. Up to date, there is no reliable way of predicting a pCR. For the first time, we explore the ability of minimal invasive biopsy (MIB) techniques to diagnose pCR in patients with clinical complete response (cCR) to NACT in this study. This question is of high clinical relevance because a reliable pCR prediction could have direct implications for clinical practice.

Methods:

In all, 164 patients were included in this review-board approved, multicenter pooled analysis of prospectively assembled data. Core-cut (CC)-MIB or vacuum-assisted (VAB)-MIB were performed after NACT and before surgery. Negative predictive values (NPV) and false-negative rates (FNR) to predict a pCR in surgical specimen (diagnose pCR through MIB) were the main outcome measures.

Results:

Pathological complete response in surgical specimen was diagnosed in 93 (56.7%) cases of the whole cohort. The NPV of the MIB diagnosis of pCR was 71.3% (95% CI: (63.3% 79.3%)). The FNR was 49.3% (95% CI: (40.4% 58.2%)). Existence of a clip marker tended to improve the NPV (odds ratio 1.98; 95% CI: (0.81; 4.85)). None of the mammographically guided VABs (n=16) was false-negative (FNR 0%, NPV 100%).

Conclusions:

Overall accuracy of MIB diagnosis of pCR was insufficient to suggest changing clinical practice. However, subgroup analyses (mammographically guided VABs) suggest a potential capacity of MIB techniques to precisely diagnose pCR after NACT. Representativity of MIB could be a crucial factor to be focused on in further analyses.     

Breast radiologic complete response is associated with favorable survival outcomes after neoadjuvant chemotherapy in breast cancer

BackgroundThe aim of this study was to examine the accuracy of radiologic complete response (rCR) in predicting pathologic complete response (pCR), and determine whether rCR is a predictor of favorable survival outcomes.Materials and methodsWe retrospectively reviewed breast cancer patients treated with neoadjuvant chemotherapy (NAC) followed by surgery from September 2007 to June 2016. Breast lesions and axillary nodes were measured by MRI and categorized into either disappeared (breast rCR) or residual disease (breast non-rCR) and either normalized (axillary rCR) or abnormal findings (axillary non-rCR) in the axillary nodes. Correlation between rCR and pCR were compared using Cohen’s Kappa statistics, and the recurrence-free survival (RFS) and overall survival (OS) rates were calculated by the Kaplan-Meier method.ResultsOut of the 1017 eligible patients, 287 (28.2%) achieved breast pCR, 165 (16.2%) achieved breast rCR, 529 (52.0%) had axillary pCR, and 274 (26.9%) achieved axillary rCR. The correlation between a breast rCR and pCR showed a Cohen’s Kappa value of 0.459, and between axillary rCR and pCR, the value was 0.384. During a median follow-up time of 48.0 months, the 5-year RFS rates were 90.6% for breast rCR, and 69.2% for breast non-rCR. The 5-year RFS rates were 82.3% for axillary rCR, and 68.8% for axillary non-rCR. Patients without breast rCR had a 2.4-fold significant increase in the risk of recurrence (p = 0.004) compared to patients with breast rCR.ConclusionAlthough rCR correlated with pCR by only moderate to fair degrees, breast rCR was a strong predictor for a favorable RFS outcome.     

Postmastectomy radiation improves the outcome of patients with locally advanced breast cancer who achieve a pathologic complete response to neoadjuvant chemotherapy

PURPOSE: The aim of this study was to investigate the role of postmastectomy radiation therapy in women with breast cancer who achieved a pathologic complete response (pCR) to neoadjuvant chemotherapy. METHODS AND MATERIALS: We retrospectively identified 226 patients treated at our institution who achieved a pCR at surgery after receiving neoadjuvant chemotherapy. Of these, the 106 patients without inflammatory breast cancer who were treated with mastectomy were analyzed. The patients' clinical stages at diagnosis were I in 2%, II in 31%, IIIA in 30%, IIIB in 25%, and IIIC in 11% (American Joint Committee on Cancer 2003 system). Of the patients, 92% received anthracycline-based chemotherapy, and 38% also received a taxane. A total of 72 patients received postmastectomy radiation therapy, and 34 did not. The actuarial rates of local-regional recurrence (LRR) and survival of the two groups were compared using the log-rank test. RESULTS: The median follow-up of surviving patients was 62 months. Use of radiation therapy did not affect the 10-year rates of LRR for patients with Stage I or II disease (the 10-year LRR rates were 0% for both groups). However, the 10-year LRR rate for patients with Stage III disease was significantly improved with radiation therapy (7.3% +/- 3.5% with vs. 33.3% +/- 15.7% without; p = 0.040). Within this cohort, use of radiation therapy was also associated with improved disease-specific and overall survival. CONCLUSION: Postmastectomy radiation therapy provides a significant clinical benefit for breast cancer patients who present with clinical Stage III disease and achieve a pCR after neoadjuvant chemotherapy.     

Bisphosphonates and pathologic complete response to taxane- and anthracycline-based neoadjuvant chemotherapy in patients with breast cancer

BACKGROUND:

Several studies have suggested that bisphosphonates have an antitumor effect. In the current study, the authors sought to evaluate whether the use of bisphosphonates increased the rate of pathological complete response (pCR) in patients with breast cancer.

METHODS:

The authors identified 1449 patients with breast cancer who were receiving taxane‐ and anthracycline‐based neoadjuvant chemotherapy between 1995 and 2007 at The University of Texas MD Anderson Cancer Center. Patients who received bisphosphonates for osteopenia or osteoporosis while receiving chemotherapy were also identified. The primary outcome was the percentage of patients achieving a pCR. Groups were compared using the chi‐square test. A multivariable logistic regression model was fit to examine the relation between the use of bisphosphonates and pCR. An exploratory survival analysis using the Kaplan‐Meier method was performed; groups were compared using the log‐rank test.

RESULTS:

Of the 1449 patients included, 39 (2.7%) received bisphosphonates. Those receiving bisphosphonates were older (P < .001) and less likely to be obese (P = .04). The pCR rate was 25.4% in the bisphosphonate group and 16% in the nonbisphosphonate group (P = .11). In the multivariable model, patients treated with bisphosphonates tended to have higher rates of pCR (odds ratio, 2.18; 95% confidence interval, 0.90‐5.24); however, the difference was not found to be statistically significant. With a median follow‐up of 55 months (range, 3 months‐145 months), no differences in disease recurrence or survival were observed.

CONCLUSIONS:

The use of bisphosphonates at the time of neoadjuvant chemotherapy was not found to be associated with a statistically significant increase in the rates of pCR. The observed estimates suggest a positive effect; however, the small percentage of patients receiving bisphosphonates likely affected the power to detect a statistically significant difference. Cancer 2011;. © 2011 American Cancer Society.     

Oestrogen receptor status, pathological complete response and prognosis in patients receiving neoadjuvant chemotherapy for early breast cancer

The aim of this study was to ascertain if oestrogen receptor (ER) status predicts for pathological complete response (pCR) to neoadjuvant chemotherapy in operable breast cancer, and the effects of pCR on survival. Using a single-institution database, 435 patients were identified, who received neoadjuvant chemotherapy for operable breast cancer and were eligible for the analysis. Patients whose tumours were ER negative were more likely to achieve a pCR than patients who were ER positive (21.6 vs 8.1%, P<0.001). Owing to a strong correlation between ER status and grade, these variables were not shown to be independent predictors of pCR. Overall survival (OS) was better in those patients who achieved a pCR compared to those who did not (5-year OS 91 vs 73%; P=0.02). This was still the case when only patients with ER-negative tumours were examined (5-year OS 90 vs 52%, P=0.005), but not in the subset of patients with ER-positive tumours (5-year OS 93 vs 79%; P=0.3). Therefore, patients with ER-negative tumours were found to be more likely to achieve a pCR to neoadjuvant chemotherapy than those with ER-positive tumours, and pathological response did not have prognostic significance in patients with ER-positive tumours.