CMET-25. PROGRESSION-FREE SURVIVAL (PFS) AND SITE OF FIRST PROGRESSION IN HER2+ METASTATIC BREAST CANCER PATIENTS WITH OR WITHOUT BRAIN METASTASES: A POOLED ANALYSIS OF TUCATINIB PHASE I STUDIES

Taxanes have been shown to be the most effective treatment for recurrent or metastatic breast cancer. However, for patients pretreated with taxanes, more active and possibly less toxic drugs are needed. In this retrospective study, we investigated on the effectiveness and safety of eribulin mesylate in 91 taxane-refractory subjects, extracted from the ESEMPIO database, which included 497 metastatic breast cancer patients treated with eribulin allover the Italy. This analysis included only those patients who have shown disease progression while receiving taxane therapy (primary refractory), or those who achieved a response followed by progression while still on therapy (taxane failure). Overall, 41/91 patients (45.2%) showed a clinical benefit; 1 complete response (2.2%) and 16 partial responses (17.6%) were observed. The median progression free survival was 3.1 months (95% CI: 2.8–3.5) and the median overall survival was 11.6 months (95% CI: 8.7–16.7). With regard to toxicity, 53 patients (58%) experienced asthenia/fatigue, 23 (25%) showed peripheral neurotoxicity, 18 (20%) alopecia, 12 (13%) mild constipation and 27 (30%) neutropenia. The toxicity related to the treatment led to eribulin dose reduction in 19 (21%) and discontinuation in 9 (10%) patients, respectively. In conclusion, this study suggests that eribulin is effective and well tolerated also in taxane-refractory patient.

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Diagnostic, prognostic, and treatment monitoring value of plasma X in patients with metastatic breast cancer.

Journal of Clinical Oncology ◽

10.1200/jco.2014.32.26_suppl.37 ◽

2014 ◽

Vol 32 (26_suppl) ◽

pp. 37-37

Author(s):

Cike Peng ◽

Rongxi Yang ◽

Dharanija Madhavan ◽

Markus Wallwiener ◽

Anja Rudolph ◽

...

Keyword(s):

Breast Cancer ◽

Metastatic Breast Cancer ◽

Cox Regression ◽

Metastatic Breast ◽

Progression Free Survival ◽

Fold Increase ◽

Base Line ◽

Breast Cancer Patients ◽

Free Survival ◽

Independent Cohort

37 Background: Metastasis is the main course of death in breast cancer (BC) patients. Reliable prognostic markers are very much appreciated to evaluate possible outcome of patients. Circulating tumor cells (CTC) is a circulating prognostic tumor marker of metastatic breast cancer patients. Despite the big technical challenges in CTC detection, the reliability of CTC enumeration for the prognosis of BC is still on debate. Some studies have proved that the plasma level of X, a major component in extracellular matrix, was increased in patients with metastatic breast cancer. However, the association between the plasma X level and the prognosis of metastatic breast cancer is still unknown. Methods: Plasma X was measured by ELISA in 60 healthy controls, 48 primary breast cancer (PBC) patients, and 212 metastatic breast cancer (MBC) patients. Progression free survival (PFS) and overall survival (OS) were analyzed. An independent cohort with 210 primary and 69 patients with metastatic breast cancer were further investigated to validate our findings. Results: A 2-fold elevation was presented in MBC patients when compared with PBC patients and controls, regardless of their CTC status. A multivariate Cox regression demonstrated that lower X level at base line was associated with longer PFS (HR: 2.50, 95% CI: 1.72–3.63, p = 1.607 × 10-6), as well as longer OS (HR: 3.74, 95% CI: 1.65 – 8.51, p = 0.002). After 1stcycle of chemotherapy, plasma X level was still prognostic and was dramatically decreased in patients who had responded to the treatment (54%, IQR: 36%–64%). In the independent validation round, a 2-fold increase of plasma X was observed again in MBC patients, compared with PBC patients. The prognostic value was also validated for PFS (HR: 2.12, 95% CI: 1.43– 3.84, p = 0.001) and OS (HR: 2.91, 95% CI: 1.73–7.65, p = 0.002) in MBC patients. Conclusions: Plasma X could be used as a diagnostic and prognostic marker for metastatic breast cancer. Its reduction after 1st cycle of chemotherapy could be an indicator of treatment efficacy. This finding may further prevent unnecessary systemic therapy by facilitating personalized medicine in the treatment of metastatic breast cancer.

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Gemcitabine and Vinorelbine Combination Chemotherapy in Taxane-Pretreated Patients with Metastatic Breast Cancer: A Phase II Study of the Kinki Multidisciplinary Breast Oncology Group (KMBOG) 1015

Chemotherapy ◽

10.1159/000475879 ◽

2017 ◽

Vol 62 (5) ◽

pp. 307-313 ◽

Cited By ~ 2

Author(s):

Jun Yamamura ◽

Norikazu Masuda ◽

Daigo Yamamoto ◽

Shigeru Tsuyuki ◽

Masahide Yamaguchi ◽

...

Keyword(s):

Breast Cancer ◽

Metastatic Breast Cancer ◽

Phase Ii ◽

Response Rate ◽

Phase Ii Study ◽

Objective Response ◽

Metastatic Breast ◽

Progression Free Survival ◽

Breast Cancer Patients ◽

Free Survival

Background: This phase II study was conducted to evaluate the efficacy and safety of the chemotherapy combination of gemcitabine and vinorelbine in taxane-pretreated Japanese metastatic breast cancer patients. Methods: In this multicenter, phase II, single-arm study, patients with recurrent or metastatic HER2-negative breast cancer were administered gemcitabine (1,200 mg/m2) and vinorelbine (25 mg/m2) intravenously on days 1 and 8 every 3 weeks. The primary endpoint was the objective response rate, and other endpoints included progression-free survival, overall survival, and safety. Results: A total of 42 patients were enrolled in this study. The objective response rate and clinical benefit rate were 24 and 43%, respectively. The median progression-free survival was 4.0 months. The median overall survival was 11.1 months. Grade 3/4 neutropenia was the most common hematologic toxicity, occurring in 22 patients (54%). Nonhematologic toxicity was moderate and transient, with fatigue (48%) being the most common condition and no severe adverse event reported. Conclusion: The combination of gemcitabine and vinorelbine is an effective and tolerable regimen for HER2-negative, taxane-pretreated, metastatic breast cancer patients in Japan.

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Clinical utility of serum HER2/neu in monitoring and prediction of progression-free survival in metastatic breast cancer patients treated with trastuzumab-based therapies

Breast Cancer Research ◽

10.1186/bcr1020 ◽

2005 ◽

Vol 7 (4) ◽

Cited By ~ 107

Author(s):

Francisco J Esteva ◽

Carol D Cheli ◽

Herbert Fritsche ◽

Monica Fornier ◽

Dennis Slamon ◽

...

Keyword(s):

Breast Cancer ◽

Metastatic Breast Cancer ◽

Cancer Patients ◽

Clinical Utility ◽

Metastatic Breast ◽

Progression Free Survival ◽

Breast Cancer Patients ◽

Free Survival

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The impact of waist-to-hip ratio (WHR) on survival in metastatic breast cancer patients treated with aromatase inhibitors (AIs)

Journal of Clinical Oncology ◽

10.1200/jco.2007.25.18_suppl.1070 ◽

2007 ◽

Vol 25 (18_suppl) ◽

pp. 1070-1070

Author(s):

M. Artac ◽

M. Samur ◽

H. Bozcuk ◽

B. Afacan ◽

M. Ozdogan

Keyword(s):

Breast Cancer ◽

Metastatic Breast Cancer ◽

Cancer Patients ◽

Metastatic Breast ◽

Progression Free Survival ◽

Fat Distribution ◽

Abdominal Fat ◽

Rank Statistic ◽

Breast Cancer Patients ◽

Free Survival

1070 Background: Aromatase inhibitors represent a novel hormonal therapy for breast cancer. Aromatase is expressed in the ovaries, brain, bone and, adipose and breast tissue. Elevated WHR, representing a higher abdominal fat distribution, has been associated with both the development of and mortality from breast cancer. Therefore, we aimed to identify whether abdominal fat distribution could affect the outcome in metastatic breast cancer patients treated with AIs. Methods: A total of 46 metastatic breast cancer patients treated with first line hormonal therapy were enrolled in this study. Pretreatment body weight, height, BMI and WHR were measured. Estrogen, progesteron and c- erb-B2 receptor status were also evaluated in analyses. Univariate and multivariate Cox regression analyses, and Kaplan Meier survival curves subjected to log rank testing were utilized for the survival analyses. Forward likelihood ratio was used for the multivariate selection process. A P value < 0.05 was considered to be significant. Results: Median age was 51 years (range 28 - 75). 36 patients were treated with letrozole and 10 patients with anastrozole. Median body weight, height, WHR and BMI were found to be 68.5 kg (range 46 - 115), 156 cm (range 137 - 167), 0.91 (range 0.7 - 1.2), and 28.7 (range 18 - 45), respectively. Factors associated with overall survival in the univariate analysis were age, c-erb-B2 expression intensity (+++ versus others by immunohistochemistry), and WHR, whereas only WHR retained significance in the multivariate analysis. Likewise, predictors of progression free survival were c-erb-B2 expression intensity and WHR. However, none of these factors was significant in the multivariate analysis. Median overall survival figures were 472 days versus unreached for patients with a WHR of <0.92 and =0.92 (Log rank statistic = 9.76, P = 0.002). Similarly, the corresponding progression free survival figures for patients with a WHR of <0.92 and =0.92 were 423 versus 1,004 days (Log rank statistic = 6.37, P = 0.012). Conclusions: This is the first report examining and suggesting the value of abdominal fat distribution in relation with benefit from AIs in metastatic breast cancer. Our results should be validated in larger series. No significant financial relationships to disclose.

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