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1.
Breast Cancer Res Treat ; 195(1): 55-64, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35829935

RESUMO

PURPOSE: Resistance to endocrine therapy poses a major clinical challenge for patients with hormone receptor-positive (HR +), human epidermal growth factor receptor 2-negative (HER2-) metastatic breast cancer (MBC). We present the preplanned 24-month final overall survival (OS) results, alongside updated progression-free survival (PFS), and objective response rate (ORR) results. METHODS: nextMONARCH is an open-label, controlled, randomized, Phase 2 study of abemaciclib alone or in combination with tamoxifen in women with endocrine-refractory HR + , HER2- MBC previously treated with chemotherapy. Patients were randomized 1:1:1 to: abemaciclib 150 mg and tamoxifen 20 mg (A + T), abemaciclib 150 mg (A-150), or abemaciclib 200 mg and prophylactic loperamide (A-200). OS was the main prespecified secondary endpoint. PFS, ORR, and safety at 24 months were compared to previously reported primary analysis results. RESULTS: Of the 234 patients enrolled, 12 were receiving study treatment at data cutoff (28Jun2019). Median follow-up was 27.2 months. Median OS was 24.2 months in the A + T arm, 20.8 months in A-150, and 17.0 months in A-200 (A + T versus A-200: HR 0.62; 95%CI [0.40, 0.97], P = 0.03 and A-150 versus A-200: HR 0.96; 95%CI [0.64, 1.44], P = 0.83). PFS and ORR results at 24 months were consistent with the primary analysis. The safety profile corresponded with previous reports. CONCLUSION: The addition of tamoxifen to abemaciclib demonstrated greater OS benefit than monotherapy. This study confirmed the single-agent activity of abemaciclib in heavily pretreated women with endocrine-refractory HR + , HER2- MBC, as well as the previously reported primary PFS and ORR results, with no new safety signals observed. Trial Registration ClinicalTrials.gov Identifier: NCT02747004.


Assuntos
Aminopiridinas , Protocolos de Quimioterapia Combinada Antineoplásica , Benzimidazóis , Neoplasias da Mama , Aminopiridinas/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Benzimidazóis/efeitos adversos , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Feminino , Humanos , Intervalo Livre de Progressão , Tamoxifeno/uso terapêutico
2.
Breast Cancer Res Treat ; 192(3): 629-637, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-35113257

RESUMO

PURPOSE: Breast cancer is increasing around the globe, including Asia. We aimed to examine the survival and risk of contralateral breast cancer (CBC) in Asian breast cancer patients with BRCA mutations. METHODS: A total of 128 breast cancer patients with germline BRCA mutations and 4,754 control breast cancer patients were enrolled. Data on clinical-pathologic characteristics, survival, and CBC were collected from the medical record. The rates of survival and CBC were estimated by Kaplan-Meier method. RESULTS: The mean age of onset in BRCA mutation carriers was significantly younger than control patients (BRCA vs. Non-BRCA: 43.9 vs. 53.2 years old). BRCA mutation carriers had a higher proportion of triple-negative breast cancer (TNBC) (52%) than control patients (12%, p < 0.001). The risk of CBC was significantly higher in BRCA mutation patients than in control cases (hazard ratio (HR) = 3.95, 95% CI 2.71-5.75); when stratified by genotype, the HRs (95%CI) were 4.84 (3.00-7.82) for BRCA1 and 3.13 (1.78-5.49) for BRCA2 carriers, respectively. Moreover, BRCA1 mutation patients with triple-negative breast cancer (TNBC) as their first breast cancer had the highest risk of CBC (HR = 5.55, 95% CI 3.29-9.34). However, we did not observe any differences in relapse-free survival and overall survival between mutation carriers and control patients. CONCLUSION: Our study suggest that BRCA patients had a significantly higher risk of developing CBC, particularly for BRCA1 mutation carriers with TNBC as the first breast cancer.


Assuntos
Proteína BRCA1 , Proteína BRCA2 , Neoplasias da Mama , Neoplasias de Mama Triplo Negativas , Adulto , Proteína BRCA1/genética , Proteína BRCA2/genética , Neoplasias da Mama/epidemiologia , Neoplasias da Mama/genética , Feminino , Mutação em Linhagem Germinativa , Heterozigoto , Humanos , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/genética , Recidiva Local de Neoplasia/mortalidade , Neoplasias de Mama Triplo Negativas/genética , Neoplasias de Mama Triplo Negativas/mortalidade
3.
Cancer Sci ; 112(6): 2381-2392, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33686753

RESUMO

This post hoc analysis of MONARCH 2 and MONARCH 3 assesses the efficacy, safety, and pharmacokinetics (PK) of abemaciclib in combination with endocrine therapy (ET) in East Asian patients with hormone receptor positive (HR+), human epidermal growth factor receptor 2-negative (HER2-) advanced breast cancer. MONARCH 2 and MONARCH 3 are global, randomized, double-blind, phase 3 studies of abemaciclib/placebo + fulvestrant and abemaciclib/placebo + nonsteroidal aromatase inhibitor (NSAI, anastrozole or letrozole), respectively. The East Asian population comprised 212 (31.7%) of the 669 intent-to-treat (ITT) population in the MONARCH 2 trial and 144 (29.2%) of the 493 ITT patients in the MONARCH 3 trial. In the East Asian population, median progression-free survival (PFS) was significantly prolonged in the abemaciclib arm compared with placebo in both MONARCH 2 (hazard ratio [HR], 0.520; 95% confidence interval [CI], 0.362 to 0.747; P < .001; median: 21.2 vs 11.6 months) and MONARCH 3 (HR, 0.326; 95% CI, 0.200 to 0.531, P < .001; median: not reached vs 12.82 months). Diarrhea (MONARCH 2: 90%; MONARCH 3: 88%) and neutropenia (MONARCH 2: 68%; MONARCH 3: 58%) were the most frequent adverse events observed in the East Asian populations. Abemaciclib exposures and PK were similar in East Asians and the non-East Asian populations of both trials. Abemaciclib in combination with ET in the East Asian populations of MONARCH 2 and MONARCH 3 provided consistent results with the ITT populations, demonstrating improvements in efficacy with generally tolerable safety profiles for patients with HR+, HER2- advanced breast cancer.


Assuntos
Aminopiridinas/administração & dosagem , Inibidores da Aromatase/administração & dosagem , Benzimidazóis/administração & dosagem , Neoplasias da Mama/tratamento farmacológico , Fulvestranto/administração & dosagem , Aminopiridinas/efeitos adversos , Aminopiridinas/farmacocinética , Anastrozol/administração & dosagem , Anastrozol/efeitos adversos , Anastrozol/farmacocinética , Inibidores da Aromatase/efeitos adversos , Inibidores da Aromatase/farmacocinética , Benzimidazóis/efeitos adversos , Benzimidazóis/farmacocinética , Neoplasias da Mama/sangue , Neoplasias da Mama/genética , Diarreia/induzido quimicamente , Diarreia/epidemiologia , Método Duplo-Cego , Quimioterapia Combinada , Feminino , Fulvestranto/efeitos adversos , Fulvestranto/farmacocinética , Humanos , Letrozol/administração & dosagem , Letrozol/efeitos adversos , Letrozol/farmacocinética , Neutropenia/induzido quimicamente , Neutropenia/epidemiologia , Receptor ErbB-2/genética , Resultado do Tratamento
4.
Breast Cancer Res Treat ; 187(3): 759-768, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33860389

RESUMO

PURPOSE: In the KATHERINE study (NCT01772472), patients with HER2-positive early breast cancer (EBC) and residual invasive disease after neoadjuvant chemotherapy plus HER2-targeted therapy who were treated with adjuvant trastuzumab emtansine (T-DM1) had a 50% reduction in the risk of an invasive disease-free survival (IDFS) event compared to patients treated with adjuvant trastuzumab. In metastatic disease, T-DM1 has resulted in higher rates of thrombocytopenia in Asian versus non-Asian patients. Here, we report safety and efficacy in Chinese patients from KATHERINE. METHODS: Patients with HER2-positive EBC and residual invasive disease after taxane- and trastuzumab-containing neoadjuvant chemotherapy followed by surgery were randomized 1:1 to 14 cycles of adjuvant T-DM1 or trastuzumab. The primary endpoint was time to an IDFS event. RESULTS: Among Chinese patients (T-DM1 n = 51, trastuzumab n = 50), T-DM1 treatment resulted in a 43% reduction in risk of an IDFS event compared to trastuzumab (HR = 0.57; 95% CI 0.25-1.31), with similar results for secondary endpoints. As in the global population, Chinese patients receiving T-DM1 versus trastuzumab had more grade ≥ 3 adverse events (AEs; 39.2% versus 4.1%) and AEs leading to treatment discontinuation (27.5% versus 0%). The most common grade ≥ 3 AE with T-DM1 was thrombocytopenia (21.6%), a frequency higher than the frequency in the global population (5.7%). Grade ≥ 3 hemorrhage was reported in 1 patient (T-DM1 arm). CONCLUSIONS: In the KATHERINE study, T-DM1 demonstrated increased efficacy compared to trastuzumab in Chinese patients. Consistent with previous data in Asian patients, T-DM1 was associated with more grade ≥ 3 AEs, and AEs leading to discontinuation, which was driven by an increase in thrombocytopenia.


Assuntos
Neoplasias da Mama , Maitansina , Ado-Trastuzumab Emtansina , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Neoplasias da Mama/tratamento farmacológico , China , Feminino , Humanos , Maitansina/efeitos adversos , Terapia Neoadjuvante , Receptor ErbB-2/genética , Trastuzumab/efeitos adversos
5.
BMC Cancer ; 21(1): 522, 2021 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-33964927

RESUMO

BACKGROUND: Neoadjuvant chemotherapy (NACT) was initially applied to locally advanced breast cancer to convert advanced lesions to an operable status. Currently, its application has been expanded to enhance overall oncological results, especially in patients with triple-negative or HER-2-positive breast cancer. With more NACT being applied, the role and impact of this approach on breast reconstruction needs to be determined. This study aimed to perform a complete reconstructive outcome analysis of patients receiving NACT who underwent immediate breast reconstruction. METHODS: A retrospective review of a single reconstructive surgeon's immediate breast reconstructions performed from July 2008 to December 2018 was undertaken. The results were stratified by the use of NACT. Patient demographics, delivery of NACT, adjuvant treatment, incidence of surgical complications, and postoperative photographs were analyzed. RESULTS: A total of 269 patients were included. The mean follow-up was 46.3 months. Forty-six out of 269 patients received NACT and were included in the NACT group. The other patients were included in the non-NACT group. When implant-based reconstruction was planned, the NACT group had a higher rate of two-stage tissue expander-implant reconstruction than direct-to-implant reconstruction (p < 0.001). The requirement for postmastectomy radiotherapy was higher in the NACT group (p < 0.001). The surgical complication rates were similar between groups after adjusting for confounding factors. The objective aesthetic outcomes assessed by 6 plastic surgeons were also similar between groups. CONCLUSIONS: Immediate breast reconstruction is a safe and reliable procedure, with an acceptable reconstructive complication rate and satisfactory aesthetic outcomes, for patients treated with NACT.


Assuntos
Neoplasias da Mama/cirurgia , Mamoplastia/efeitos adversos , Adulto , Neoplasias da Mama/tratamento farmacológico , Quimioterapia Adjuvante , Estudos Transversais , Feminino , Humanos , Mastectomia , Pessoa de Meia-Idade , Terapia Neoadjuvante , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos
6.
BMC Surg ; 21(1): 160, 2021 Mar 23.
Artigo em Inglês | MEDLINE | ID: mdl-33757489

RESUMO

BACKGROUND: Neoadjuvant chemotherapy (NAC) has been the standard treatment for locally advanced breast cancer for the purpose of downstaging or for conversion from mastectomy to breast conservation surgery (BCS). Locoregional recurrence (LRR) rate is still high after NAC. The aim of this study was to determine predictive factors for LRR in breast cancer patients in association with the operation types after NAC. METHODS: Between 2005 and 2017, 1047 breast cancer patients underwent BCS or mastectomy after NAC in Chang Gung Memorial Hospital, Linkou. We obtained data regarding patient and tumor characteristics, chemotherapy regimens, clinical tumor response, tumor subtypes and pathological complete response (pCR), type of surgery, and recurrence. RESULTS: The median follow-up time was 59.2 months (range 3.13-186.75 months). The mean initial tumor size was 4.89 cm (SD ± 2.95 cm). Of the 1047 NAC patients, 232 (22.2%) achieved pCR. The BCS and mastectomy rates were 41.3% and 58.7%, respectively. One hundred four patients developed LRR (9.9%). Comparing between patients who underwent BCS and those who underwent mastectomy revealed no significant difference in the overall LRR rate of the two groups, 8.8% in BCS group vs 10.7% in mastectomy group (p = 0.303). Multivariate analysis indicated that independent factors for the prediction of LRR included clinical N2 status, negative estrogen receptor (ER), and failure to achieve pCR. In subgroups of multivariate analysis, only negative ER was the independent factor to predict LRR in mastectomy group (p = 0.025) and hormone receptor negative/human epidermal growth factor receptor 2 positive (HR-/HER2 +) subtype (p = 0.006) was an independent factor to predict LRR in BCS patients. Further investigation according to the molecular subtype showed that following BCS, non-pCR group had significantly increased LRR compared with the pCR group, in HR-/HER2 + subtype (25.0% vs 8.3%, p = 0.037), and HR-/HER2- subtype (20.4% vs 0%, p = 0.002). CONCLUSION: Clinical N2 status, negative ER, and failure to achieve pCR after NAC were independently related to the risk of developing LRR. Operation type did not impact on the LRR. In addition, the LRR rate was higher in non-pCR hormone receptor-negative patients undergoing BCS comparing with pCR patients.


Assuntos
Neoplasias da Mama/patologia , Neoplasias da Mama/cirurgia , Mastectomia , Terapia Neoadjuvante/efeitos adversos , Recidiva Local de Neoplasia/patologia , Neoplasias da Mama/tratamento farmacológico , Quimioterapia Adjuvante , Feminino , Humanos , Terapia Neoadjuvante/métodos , Recidiva Local de Neoplasia/epidemiologia , Recidiva Local de Neoplasia/cirurgia , Receptor ErbB-2/uso terapêutico , Receptores de Estrogênio/uso terapêutico , Estudos Retrospectivos
7.
BMC Cancer ; 19(1): 176, 2019 Feb 26.
Artigo em Inglês | MEDLINE | ID: mdl-30808421

RESUMO

BACKGROUND: Zoledronic acid (ZA), a nitrogen-containing bisphosphonate, inhibits osteoclastogenesis. Emerging evidence suggests that ZA has anti-tumor and anti-metastatic properties for breast cancer cells. In a mouse model of ZA-related osteonecrosis of the jaw, ZA administration was found to suppress regulatory T-cells (Tregs) function. Our previous reports also demonstrated ZA acted as an immune modulator to block Tregs. Manipulation of Tregs represents a new strategy for cancer treatment. However, the relationship among ZA, Tregs, and cancer cells remains unclear. In this study, we investigated the effects of ZA on the interaction of breast cancer cells and Tregs. METHODS: The anti-tumor effect of ZA on triple negative breast cancer cell lines were validated by XTT, wound healing and apoptosis analysis. A flow cytometry-based assay was used to analyze the immunosuppressive effect of Tregs treated with media conditioned by breast cancer cells, and a transwell assay was used to evaluate the chemotactic migration of Tregs. Differential gene expression profile on MDA-MB-231 treated with ZA (25 µM) was analyzed by. microarrays to describe the molecular basis of actions of ZA for possible direct anti-tumor effects. Enzyme-linked immunosorbent assays and quantitative real-time PCR were used to investigate the effect of ZA on the expression of cytokines/factors by breast cancer cells. RESULTS: ZA was found to inhibit the proliferation and migration of breast cancer cells. Media conditioned by the MDA-MB-231 cells promoted the expansion, chemotactic migration, and immunosuppressive activity of Tregs, and these effects were attenuated in a dose-dependent manner by ZA treatment, and the attenuation was due to reduced expression of selected breast cancer cell factors (CCL2, CCL5, and IDO). CONCLUSIONS: ZA can significantly affect the interaction between breast cancer cells and Tregs. Our findings indicate that ZA is a potential therapeutic agent that can be used to reduce cancer aggressiveness by abolishing the supportive role of Tregs.


Assuntos
Fatores Imunológicos/farmacologia , Linfócitos T Reguladores/imunologia , Neoplasias de Mama Triplo Negativas/tratamento farmacológico , Ácido Zoledrônico/farmacologia , Comunicação Celular , Linhagem Celular Tumoral , Movimento Celular , Proliferação de Células , Quimiocina CCL2/metabolismo , Quimiocina CCL5/metabolismo , Feminino , Perfilação da Expressão Gênica , Humanos , Indolamina-Pirrol 2,3,-Dioxigenase/metabolismo , Linfócitos T Reguladores/efeitos dos fármacos , Neoplasias de Mama Triplo Negativas/imunologia , Microambiente Tumoral
8.
BMC Cancer ; 17(1): 863, 2017 Dec 18.
Artigo em Inglês | MEDLINE | ID: mdl-29254480

RESUMO

BACKGROUND: Obesity is linked to poor disease outcomes in breast cancer patients. However, this link was mostly based on body weight or BMI rather than body-fat. The purpose of this study was to evaluate the relationship between body-fat gain and disease progression in Taiwanese women after breast cancer surgery and how this relationship is influenced by menopausal status. METHODS: Body fat percentage was measured 1 day before and 6 months after surgery in 131 women with stages 0-III breast cancer. Disease outcomes (metastasis and death) were assessed by chart review and telephone contact 7 to 8 years after diagnosis. These data were analyzed by multivariate Cox proportional hazard model analysis. RESULTS: The percentage of women with over 5% gain in body-fat was 56% for premenopausal and 42% for postmenopausal. Rates of distant metastasis and all-cause mortality were 17.6 and 9.9%, respectively over the follow-up period. Distant metastases were predicted in postmenopausal but not premenopausal women with breast cancer by increased body fat percentage (HR = 1.3, p = 0.035), after controlling other potential covariates, including disease severity, estrogen receptor expression, progesterone receptors expression, age, and exercise habit before diagnosis. Survival was not significantly associated with body-fat percentage gains. CONCLUSIONS: Our results suggest that increased body fat percentage 6 months after breast surgery is an important predictor of distant metastasis in postmenopausal Taiwanese women with breast cancer. Clinicians may need to measure patients' body fat periodically. Our findings should be validated in studies with a longer follow-up time.


Assuntos
Tecido Adiposo/fisiopatologia , Neoplasias da Mama/fisiopatologia , Progressão da Doença , Obesidade/fisiopatologia , Adulto , Índice de Massa Corporal , Peso Corporal , Neoplasias da Mama/complicações , Neoplasias da Mama/cirurgia , Feminino , Humanos , Mastectomia , Pessoa de Meia-Idade , Obesidade/complicações , Obesidade/cirurgia , Pré-Menopausa/fisiologia , Modelos de Riscos Proporcionais , Receptores de Estrogênio/metabolismo , Receptores de Progesterona/metabolismo , Fatores de Risco
9.
Lancet Oncol ; 17(3): 357-366, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26822398

RESUMO

BACKGROUND: Trastuzumab resistance is a key therapeutic challenge in metastatic breast cancer. We postulated that broader inhibition of ErbB receptors with afatinib would improve clinical outcomes compared with HER2 inhibition alone in patients who had progressed on previous trastuzumab treatment. LUX-Breast 1 compared afatinib plus vinorelbine with trastuzumab plus vinorelbine for such patients with HER2-positive metastatic breast cancer. METHODS: We did this open-label trial at 350 hospitals in 41 countries worldwide. We enrolled female patients with HER2-overexpressing metastatic breast cancer who had progressed on or following adjuvant trastuzumab or first-line treatment of metastatic disease with trastuzumab. Participants were randomly assigned (2:1) to receive oral afatinib (40 mg/day) plus intravenous vinorelbine (25 mg/m(2) per week) or intravenous trastuzumab (2 mg/kg per week after 4 mg/kg loading dose) plus vinorelbine. Randomisation was done centrally and stratified by previous trastuzumab treatment (adjuvant vs first-line treatment), hormone receptor status (oestrogen receptor and progesterone receptor positive vs others), and region. The primary endpoint was progression-free survival, assessed in the intention-to-treat population. This trial is closed to enrolment and is registered with ClinicalTrials.gov, NCT01125566. FINDINGS: Between Aug 26, 2010, and April 26, 2013, we enrolled 508 patients: 339 assigned to the afatinib group and 169 assigned to the trastuzumab group. Recruitment was stopped on April 26, 2013, after a benefit-risk assessment by the independent data monitoring committee was unfavourable for the afatinib group. Patients on afatinib plus vinorelbine had to switch to trastuzumab plus vinorelbine, afatinib monotherapy, vinorelbine monotherapy, or receive treatment outside of the trial. Median follow-up was 9·3 months (IQR 3·7-16·0). Median progression-free survival was 5·5 months (95% CI 5·4-5·6) in the afatinib group and 5·6 months (5·3-7·3) in the trastuzumab group (hazard ratio 1·10 95% CI 0·86-1·41; p=0·43). The most common drug-related adverse events of grade 3 or higher were neutropenia (190 [56%] of 337 patients in the afatinib group vs 102 [60%] of 169 patients in the trastuzumab group), leucopenia (64 [19%] vs 34 [20%]), and diarrhoea (60 [18%] vs none). INTERPRETATION: Trastuzumab-based therapy remains the treatment of choice for patients with HER2-positive metastatic breast cancer who had progressed on trastuzumab. FUNDING: Boehringer Ingelheim.


Assuntos
Neoplasias da Mama/tratamento farmacológico , Recidiva Local de Neoplasia/tratamento farmacológico , Quinazolinas/administração & dosagem , Receptor ErbB-2/metabolismo , Trastuzumab/administração & dosagem , Vimblastina/análogos & derivados , Adulto , Afatinib , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Neoplasias da Mama/mortalidade , Neoplasias da Mama/patologia , Neoplasias da Mama/cirurgia , Quimioterapia Adjuvante , Intervalo Livre de Doença , Relação Dose-Resposta a Droga , Esquema de Medicação , Feminino , Humanos , Estimativa de Kaplan-Meier , Mastectomia/métodos , Pessoa de Meia-Idade , Invasividade Neoplásica/patologia , Metástase Neoplásica , Recidiva Local de Neoplasia/mortalidade , Recidiva Local de Neoplasia/patologia , Prognóstico , Modelos de Riscos Proporcionais , Quinazolinas/efeitos adversos , Medição de Risco , Análise de Sobrevida , Trastuzumab/efeitos adversos , Resultado do Tratamento , Vimblastina/administração & dosagem , Vimblastina/efeitos adversos , Vinorelbina
10.
BMC Immunol ; 17(1): 45, 2016 11 25.
Artigo em Inglês | MEDLINE | ID: mdl-27887569

RESUMO

BACKGROUND: CD4+CD25+ regulatory T (Treg) cells suppress tumor immunity by inhibiting immune cells. Manipulation of Treg cells represents a new strategy for cancer treatment. Zoledronic acid (ZA), a nitrogen-containing bisphosphonate, inhibits the expression of receptor activator of nuclear factor kappa-B ligand (RANKL) on osteoblasts to inhibit osteoclastogenesis. In a mouse model of bisphosphonate-related osteonecrosis of the jaw, administration of ZA suppressed Treg-cell activity and activated inflammatory Th17 cells. However, the interaction between ZA and Treg cells remained unclear. This study investigated the immune modulation of Treg cells by ZA. METHODS: Flow cytometry was used to analyze the phenotypic and immunosuppressive characteristics of Treg cells treated with ZA. Chemotactic migration was evaluated using transwell assays. Quantitative real-time PCR (qRT-PCR) was used to investigate the effect of ZA on the expression of suppressive molecules by Treg cells. RESULTS: Proliferation of isolated Treg cells in culture was inhibited by ZA, although ZA did not induce apoptosis. qRT-PCR and flow cytometry showed that ZA significantly downregulated the expression of CCR4, CTLA4, PD-1 and RANKL on Treg cells. Chemotactic migration and immunosuppressive functions were also significantly attenuated in Treg cells pretreated with ZA, and these effects were dose-dependent. Co-culture with Treg cells significantly increased the migration rate of breast cancer cells, while pretreatment of Treg cells with ZA attenuated this effect. CONCLUSIONS: Our findings demonstrated that ZA acted as an immune modulator by significantly inhibiting the expansion, migration, immunosuppressive function and pro-metastatic ability of Treg cells. Immunomodulation of Treg cells by ZA represents a new strategy for cancer therapy.


Assuntos
Neoplasias da Mama/imunologia , Vacinas Anticâncer/imunologia , Difosfonatos/farmacologia , Imidazóis/farmacologia , Fatores Imunológicos/farmacologia , Imunoterapia/métodos , Osteogênese , Linfócitos T Reguladores/imunologia , Células Th17/imunologia , Neoplasias da Mama/tratamento farmacológico , Antígenos CD4/metabolismo , Movimento Celular , Células Cultivadas , Técnicas de Cocultura , Difosfonatos/uso terapêutico , Feminino , Humanos , Imidazóis/uso terapêutico , Fatores Imunológicos/uso terapêutico , Imunoterapia/tendências , Subunidade alfa de Receptor de Interleucina-2/metabolismo , Ativação Linfocitária , NF-kappa B/metabolismo , Ligante RANK/metabolismo , Transdução de Sinais , Linfócitos T Reguladores/efeitos dos fármacos , Ácido Zoledrônico
11.
Support Care Cancer ; 24(1): 243-251, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26014617

RESUMO

PURPOSE: Higher symptom burden in oncology patients is associated with poorer quality of life (QOL). However, the long-term predictive relationship between pre-treatment symptom profiles and QOL is unknown. The aim of this study was to identify subgroups of breast cancer patients based on their presurgical symptom profiles and to examine the predictive effect of group membership on QOL 2 years after surgery. METHODS: Data were analyzed from a longitudinal study of women's (N = 198) symptoms after breast cancer surgery. Patient subgroups were identified by latent class analysis based on presurgical severity of five symptoms (i.e., attentional and physical fatigue, sleep disturbance, depression, and anxiety). Among these 198 women, quality of life 2 years after surgery was available for 97. Group differences in QOL were examined by general linear models. RESULTS: We identified four distinct patient groups. Group A (All Low) had low levels of all symptoms. Group B (Low Fatigue and Moderate Mood) was characterized by low attentional and physical fatigue but moderate sleep disturbance, depression, and anxiety. Group C (All Moderate) was characterized by moderate levels of all five symptoms. Group D was characterized by moderate attentional and physical fatigue and severe sleep disturbance, depression, and anxiety (Moderate Fatigue and High Mood). Group D had significantly lower overall QOL scores 2 years after surgery than Group A (p = 0.002). CONCLUSIONS: Breast cancer patients' presurgical symptom profile had a long-term predictive effect on QOL. Routine assessment of patients' pre-treatment symptom is suggested to identify high risk group.


Assuntos
Neoplasias da Mama/cirurgia , Mastectomia/psicologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Ansiedade , Neoplasias da Mama/complicações , Depressão , Fadiga , Feminino , Humanos , Estudos Longitudinais , Pessoa de Meia-Idade , Qualidade de Vida , Adulto Jovem
12.
J Formos Med Assoc ; 115(4): 249-56, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25900861

RESUMO

BACKGROUND/PURPOSE: Extended hormonal therapy with tamoxifen for > 5 years has improved disease-free survival (DFS) and overall survival (OS) in hormone receptor (HR)-positive breast cancer patients. The aim of this study was to identify the HR-positive breast cancer women who need adjuvant tamoxifen for > 5 years. METHODS: Between 1990 and 2004, 1104 HR-positive breast cancer patients who had received tamoxifen treatment at our institution and had been disease free for at least 6 years were included in this analysis. Univariate and multivariate analyses of prognostic factors for late recurrence were performed using the binary logistic regression model. RESULTS: During a median follow-up period of 10.9 years after surgery, 70 patients died and 99 showed recurrence. In multivariate analysis, age < 40 years (p < 0.001) and lymph node metastasis (p < 0.001) were associated with higher rates of recurrence. We stratified patients into high-risk (age < 40 years or positive lymph node status, 536 patients) and low-risk (age > 40 years and negative lymph node status, 566 patients) groups. The recurrence rates were 14.6% and 3.5% in the high-risk and low-risk groups, respectively. Patients in the high-risk group had poorer disease-free survival (p < 0.001) and overall survival (p = 0.010) than those in the low-risk group. CONCLUSION: Our findings suggest that HR-positive breast cancer women either aged < 40 years or with positive lymph node status were justified in continuing with tamoxifen therapy for > 5 years.


Assuntos
Antineoplásicos Hormonais/administração & dosagem , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/mortalidade , Recidiva Local de Neoplasia/epidemiologia , Tamoxifeno/administração & dosagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos Hormonais/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Quimioterapia Adjuvante , Intervalo Livre de Doença , Feminino , Humanos , Estimativa de Kaplan-Meier , Modelos Logísticos , Metástase Linfática , Pessoa de Meia-Idade , Análise Multivariada , Taiwan , Tamoxifeno/uso terapêutico
13.
Int J Mol Sci ; 17(4)2016 Apr 21.
Artigo em Inglês | MEDLINE | ID: mdl-27110769

RESUMO

Regarding breast cancer treatment, triple negative breast cancer (TNBC) is a difficult issue. Most TNBC patients die of cancer metastasis. Thus, to develop a new regimen to attenuate TNBC metastatic potential is urgently needed. MART-10 (19-nor-2α-(3-hydroxypropyl)-1α,25(OH)2D3), the newly-synthesized 1α,25(OH)2D3 analog, has been shown to be much more potent in cancer growth inhibition than 1α,25(OH)2D3 and be active in vivo without inducing obvious side effect. In this study, we demonstrated that both 1α,25(OH)2D3 and MART-10 could effectively repress TNBC cells migration and invasion with MART-10 more effective. MART-10 and 1α,25(OH)2D3 induced cadherin switching (upregulation of E-cadherin and downregulation of N-cadherin) and downregulated P-cadherin expression in MDA-MB-231 cells. The EMT(epithelial mesenchymal transition) process in MDA-MB-231 cells was repressed by MART-10 through inhibiting Zeb1, Zeb2, Slug, and Twist expression. LCN2, one kind of breast cancer metastasis stimulator, was also found for the first time to be repressed by 1α,25(OH)2D3 and MART-10 in breast cancer cells. Matrix metalloproteinase-9 (MMP-9) activity was also downregulated by MART-10. Furthermore, F-actin synthesis in MDA-MB-231 cells was attenuated as exposure to 1α,25(OH)2D3 and MART-10. Based on our result, we conclude that MART-10 could effectively inhibit TNBC cells metastatic potential and deserves further investigation as a new regimen to treat TNBC.


Assuntos
Movimento Celular/efeitos dos fármacos , Colecalciferol/análogos & derivados , Neoplasias de Mama Triplo Negativas/patologia , Caderinas/genética , Caderinas/metabolismo , Linhagem Celular Tumoral , Colecalciferol/farmacologia , Colecalciferol/uso terapêutico , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Humanos , Invasividade Neoplásica , Metástase Neoplásica/prevenção & controle , Neoplasias de Mama Triplo Negativas/tratamento farmacológico
14.
Breast J ; 21(3): 224-32, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25772033

RESUMO

Flat epithelial atypia (FEA) and atypical ductal hyperplasia (ADH) are precursors of breast malignancy. Management of FEA or ADH after image-guided core needle biopsy (CNB) remains controversial. The aim of this study was to evaluate malignancy underestimation rates after FEA or ADH diagnosis using image-guided CNB and to identify clinical characteristics and imaging features associated with malignancy as well as identify cases with low underestimation rates that may be treatable by observation only. We retrospectively reviewed 2,875 consecutive image-guided CNBs recorded in an electronic data base from January 2010 to December 2011 and identified 128 (4.5%) FEA and 83 (2.9%) ADH diagnoses (211 total cases). Of these, 64 (30.3%) were echo-guided CNB procedures and 147 (69.7%) mammography-guided CNBs. Twenty patients (9.5%) were upgraded to malignancy. Multivariate analysis indicated that age (OR = 1.123, p = 0.002, increase of 1 year), mass-type lesion with calcifications (OR = 8.213, p = 0.006), and ADH in CNB specimens (OR = 8.071, p = 0.003) were independent predictors of underestimation. In univariate analysis of echo-guided CNB (n = 64), mass with calcifications had the highest underestimation rate (p < 0.001). Multivariate analysis of 147 mammography-guided CNBs revealed that age (OR = 1.122, p = 0.040, increase of 1 year) and calcification distribution were significant independent predictors of underestimation. No FEA case in which, complete calcification retrieval was recorded after CNB was upgraded to malignancy. Older age at diagnosis on image-guided CNB was a predictor of malignancy underestimation. Mass with calcifications was more likely to be associated with malignancy, and in cases presenting as calcifications only, segmental distribution or linear shapes were significantly associated with upgrading. Excision after FEA or ADH diagnosis by image-guided CNB is warranted except for FEA diagnosed using mammography-guided CNB with complete calcification retrieval.


Assuntos
Hiperplasia/patologia , Biópsia Guiada por Imagem/métodos , Glândulas Mamárias Humanas/patologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Biópsia com Agulha de Grande Calibre , Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/patologia , Feminino , Humanos , Hiperplasia/diagnóstico , Pessoa de Meia-Idade , Ultrassonografia
15.
J Formos Med Assoc ; 114(3): 246-53, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23871549

RESUMO

BACKGROUND/PURPOSE: Breast cancer patients may encounter a wide range of physical and psychosocial distress symptoms during diagnosis, while awaiting treatment, and during treatment. This study of newly diagnosed breast cancer patients explores: (1) changes in symptom distress over 4 months; and (2) factors predicting changes in symptom distress. METHODS: A prospective longitudinal design was used to collect data from breast cancer patients in northern Taiwan. A set of questionnaires was used to measure anxiety, symptom distress, social support, and demographic and treatment-related characteristics. Repeated measures analysis of variance (RM-ANOVA) with least significant difference (LSD) was used to examine differences in symptom distress, state anxiety, and social-support levels across four time-points. Generalized estimating equation (GEE) is used to determine predictors for the change in symptom distress. RESULTS: Participants showed mild overall symptom distress during treatment that increased from cancer diagnosis to treatment phases, with a peak at 4 months after diagnosis. Insomnia was the most commonly identified distressful symptom over time. Changes in overall symptom distress were significantly predicted by state anxiety, health professional support, and time since cancer diagnosis. CONCLUSION: Change in symptom distress following the first 4 months after diagnosis was predicted by state anxiety, health professional support, and time. Patients should receive social support and be trained in problem-solving skills to relieve distressful symptoms from diagnosis through treatment.


Assuntos
Ansiedade/diagnóstico , Neoplasias da Mama/psicologia , Apoio Social , Estresse Psicológico/diagnóstico , Adulto , Idoso , Análise de Variância , Neoplasias da Mama/diagnóstico , Neoplasias da Mama/terapia , Feminino , Humanos , Estudos Longitudinais , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Prognóstico , Estudos Prospectivos , Escalas de Graduação Psiquiátrica , Análise de Regressão , Fatores Socioeconômicos , Inquéritos e Questionários , Taiwan
16.
Breast Cancer Res Treat ; 146(2): 299-308, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24951266

RESUMO

Studies have shown that having breast reconstruction has a positive influence on patient satisfaction and health-related quality of life (HRQoL) at the conclusion of treatment. However, no study has critically evaluated changes to these patient-reported outcomes during the process of undergoing breast reconstruction. This study was to prospectively evaluate changes to patient-centered metrics through the progression of breast reconstruction. An IRB-approved prospective, multi-institutional study was performed for all patients undergoing breast reconstruction between 2009 and 2011. The Breast-Q reconstruction questionnaire was used for evaluation of HRQoL and was administered at five intervals in the perioperative period. Longitudinal evaluation was performed to assess changes to HRQoL metrics during this perioperative interval. One hundred and ten patients were enrolled, and 100 patients (91.9 %) completed appropriate follow-up. Preoperative HRQoL scores were higher in patients electing to forgo reconstruction (P < 0.004), while postoperative HRQoL scores consistently deteriorated at multiple time points following mastectomy as compared to reconstructed patients. On subgroup analysis, results indicated lower initial HRQoL scores in delayed reconstruction (P < 0.05) as compared to immediate reconstruction. These scores did, however, merge at approximately 9 months postoperatively. Changes to HRQoL outcomes occur through progression of breast reconstruction. Within the first year of surgery, early decreases are mirrored by significant increases at later time points above baseline levels when evaluating most forms of reconstruction. Choosing against reconstruction will likely result in continued deterioration of HRQoL for patients undergoing cancer surgery, but steady improvements can be expected if delayed reconstruction is chosen.


Assuntos
Neoplasias da Mama/mortalidade , Neoplasias da Mama/cirurgia , Mamoplastia , Adulto , Idoso , Neoplasias da Mama/diagnóstico , Neoplasias da Mama/terapia , Feminino , Humanos , Estudos Longitudinais , Mamoplastia/métodos , Mastectomia , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Satisfação do Paciente , Estudos Prospectivos , Qualidade de Vida , Fatores de Risco , Autorrelato , Inquéritos e Questionários , Fatores de Tempo , Resultado do Tratamento , Adulto Jovem
17.
Hepatol Int ; 18(2): 449-460, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38376651

RESUMO

BACKGROUND AND AIMS: This study aimed to compare the efficacy of shorter vs. longer tenofovir disoproxil fumarate (TDF) prophylaxis in preventing hepatitis B virus (HBV) relapse in cancer patients with chronic hepatitis B (CHB) undergoing chemotherapy. METHODS: This phase IV, prospective randomized trial enrolled cancer patients with CHB from 2014 to 2019 in Taiwan. Included patients were randomized to receive either 24- (Arm A) or 48-week (Arm B) post-chemotherapy TDF and compared for cumulative incidence of virological and clinical relapse. Logistic regressions were conducted to determine the factors associated with HBV relapse. RESULTS: One hundred patients were randomized, and 41 patients in Arm A and 46 in Arm B completed the TDF treatment. No significant difference was found in cumulative incidence of virological relapse (Arm A: 94.4%, Arm B: 93.1%, p = 0.110) or clinical relapse among patients with baseline HBV DNA > 2000 IU/mL (Arm A: 38.9%, Arm B: 26.7%, p = 0.420) between the two arms. High baseline HBV DNA ≥ 10,000 IU/mL (OR = 51.22) and HBsAg ≥ 1000 IU/mL (OR = 8.64) were independently associated with an increased virological relapse. Alanine aminotransferase (ALT), serum phosphorus, vitamin D, and estimated glomerular filtration rate (eGFR) remained stable throughout the study. CONCLUSIONS: The 24-week preventative TDF has comparable efficacy to the 48-week treatment in virologic and clinical relapse. High baseline HBsAg or HBV DNA is associated with a higher risk of HBV relapse. These findings imply a 24-week duration of TDF treatment with a close monitor for patients with a high baseline viral load. Hepatitis B virus infection is a prominent cause of liver cancer and chronic liver disease and affected millions of people worldwide. When HBV-infected people are exposed to immunosuppressive medication or chemotherapy for cancer, the chance of HBV reactivation rises considerably. This trial showed 24-week tenofovir disoproxil fumarate (TDF) may be sufficient for preventing HBV relapse in cancer patients receiving chemotherapy. CLINICAL TRIAL REGISTRATION NUMBER: NCT02081469.


Assuntos
Hepatite B Crônica , Hepatite B , Humanos , Tenofovir , Antivirais , Antígenos de Superfície da Hepatite B , DNA Viral , Taiwan , Estudos Prospectivos , Recidiva Local de Neoplasia/prevenção & controle , Recidiva Local de Neoplasia/tratamento farmacológico , Hepatite B Crônica/tratamento farmacológico , Hepatite B Crônica/prevenção & controle , Hepatite B/prevenção & controle , Vírus da Hepatite B/genética , Carga Viral , Resultado do Tratamento
18.
Breast Cancer ; 31(2): 252-262, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38150135

RESUMO

BACKGROUND: Due to the presence of other comorbidities and multi-therapeutic modalities in breast cancer, renally cleared chemotherapeutic regimens may cause nephrotoxicity. The aim of this retrospective study is to compare the chemotherapy types and outcomes in breast cancer patients with or without chronic renal disease. PATIENTS AND METHODS: We retrospectively enrolled 62 female patients with breast cancer and underlying late stages (stage 3b, 4, and 5) of chronic kidney disease (CKD) treated from 2000 to 2017. They were propensity score-matched 1:1 with patients in our database with breast cancer and normal renal function (total n = 124). RESULTS: The main subtype of breast cancer was luminal A and relatively few patients with renal impairment received chemotherapy and anti-Her-2 treatment. The breast cancer patients with late-stage CKD had a slightly higher recurrent rate, especially at the locally advanced stage. The 5-year overall survival was 90.1 and 71.2% for patients without and with late-stage CKD, but the breast cancer-related mortality rate was 88.9 and 24.1%, respectively. In multivariate analyses, dose-reduced chemotherapy was an independent negative predictor of 5-year recurrence-free survival and late-stage CKD was associated with lower 5-year overall survival rate. CONCLUSIONS: Breast cancer patients with late-stage CKD may receive insufficient therapeutic modalities. Although the recurrence-free survival rate did not differ significantly by the status of CKD, patients with breast cancer and late-stage CKD had shorter overall survival time but a lower breast cancer-related mortality rate, indicated that the mortality was related to underlying disease.


Assuntos
Neoplasias da Mama , Insuficiência Renal Crônica , Humanos , Feminino , Neoplasias da Mama/complicações , Neoplasias da Mama/tratamento farmacológico , Estudos Retrospectivos , Taxa de Filtração Glomerular , Insuficiência Renal Crônica/complicações , Insuficiência Renal Crônica/terapia , Taxa de Sobrevida
19.
Sci Rep ; 14(1): 25690, 2024 10 28.
Artigo em Inglês | MEDLINE | ID: mdl-39465324

RESUMO

This study aimed to evaluate the effect of Astragalus polysaccharides (PG2) on reducing chemotherapy-induced fatigue (CIF) and toxicity, thereby encouraging compliance to chemotherapy. This was a randomized, placebo-controlled, phase 2 study. Patients with stage II/III early breast cancer planning to undergo adjuvant anthracycline-based chemotherapy were randomly assigned to receive PG2 500 mg or placebo on days 1, 3, and 8 every 21 days. The fatigue global score (FGS) was assessed using the brief fatigue inventory (BFI)-Taiwan. The Breast Cancer-Specific Module of the European Organization for Research and Treatment of Cancer Quality of Life Questionnaires-Core30 evaluated the health-related quality of life during the first four cycles of adjuvant chemotherapy. Overall, 66 eligible patients were equally randomized into the PG2 and placebo groups between March 01, 2018, and March 09, 2021. The mean change in the FGS and fatigue intensity did not significantly differ between both groups. However, the FGS and fatigue intensity were less aggravated in the first four cycles in the premenopausal-PG2 group than in the placebo group. Our study concluded PG2 combined with adjuvant chemotherapy can reduce CIF, insomnia, the negative effect on future perspectives, and improve global health status, especially for premenopausal patients with breast cancer. Trial registration number: NCT03314805 registered on 19/10/2017.


Assuntos
Astrágalo , Neoplasias da Mama , Fadiga , Polissacarídeos , Qualidade de Vida , Humanos , Neoplasias da Mama/tratamento farmacológico , Feminino , Fadiga/tratamento farmacológico , Fadiga/induzido quimicamente , Quimioterapia Adjuvante , Polissacarídeos/uso terapêutico , Polissacarídeos/farmacologia , Pessoa de Meia-Idade , Adulto , Astrágalo/química , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico
20.
Oncol Res Treat ; 47(10): 484-495, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39033747

RESUMO

INTRODUCTION: This multicenter, phase II randomized, non-inferiority study reports from the first prospective two-armed randomized control trial that compared the efficacy, safety, and quality of life (QoL) of pegylated liposomal doxorubicin (PLD)-based and epirubicin-based as adjuvant chemotherapy for stage I-II human epidermal growth factor receptor 2 (HER2)-negative breast cancer. METHODS: Patients with stage I/II HER2-negative breast cancer received PLD (37.5 mg/m2, Q3W, 5 cycles, LC arm) plus cyclophosphamide (600 mg/m2) or epirubicin (90 mg/m2, Q3W, 4 cycles, EC arm) plus cyclophosphamide (600 mg/m2). Randomization was stratified by lymph node and ER and PR status. The primary endpoint was disease-free survival (DFS), and secondary endpoints were overall survival (OS), safety profiles, and QoL. QoL was assessed using the EORTC-QLQ-C30 and QLQ-BR23 questionnaires. RESULTS: A total of 256 patients were assigned to LC (n = 148) and EC (n = 108). There was no difference in 5-year DFS and OS rate between the two groups. LC-based adjuvant regimens had significantly less alopecia and low-grade 3-4 hematologic adverse events (AEs). Significantly improved QoL was observed in the LC arm during and after treatment for symptoms including fatigue, nausea and vomiting, and systemic therapy side effects. CONCLUSION: Comparable efficacy and safety between adjuvant PLD and epirubicin for stage I-II HER2-negative breast cancer was observed. There was no difference in the 5-year DFS and OS rates between the two treatment arms. However, low-grade 3-4 AEs and a trend of favorable QoL symptom scales were observed in the LC arm, suggesting that PLD-containing regimen could become a new standard treatment for early-stage HER2-negative breast cancer patients.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica , Neoplasias da Mama , Ciclofosfamida , Doxorrubicina , Epirubicina , Polietilenoglicóis , Qualidade de Vida , Receptor ErbB-2 , Humanos , Feminino , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Neoplasias da Mama/mortalidade , Polietilenoglicóis/uso terapêutico , Polietilenoglicóis/administração & dosagem , Epirubicina/uso terapêutico , Epirubicina/administração & dosagem , Epirubicina/efeitos adversos , Doxorrubicina/análogos & derivados , Doxorrubicina/uso terapêutico , Doxorrubicina/efeitos adversos , Pessoa de Meia-Idade , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Ciclofosfamida/uso terapêutico , Ciclofosfamida/efeitos adversos , Ciclofosfamida/administração & dosagem , Receptor ErbB-2/metabolismo , Adulto , Estudos Prospectivos , Idoso , Resultado do Tratamento , Estadiamento de Neoplasias , Quimioterapia Adjuvante
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