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1.
J Clin Oncol ; 42(3): 283-299, 2024 Jan 20.
Artigo em Inglês | MEDLINE | ID: mdl-37864337

RESUMO

PURPOSE: Immunotherapy and chemotherapy combinations have shown activity in endometrial cancer, with greater benefit in mismatch repair (MMR)-deficient (dMMR) than MMR-proficient (pMMR) disease. Adding a poly(ADP-ribose) polymerase inhibitor may improve outcomes, especially in pMMR disease. METHODS: This phase III, global, double-blind, placebo-controlled trial randomly assigned eligible patients with newly diagnosed advanced or recurrent endometrial cancer 1:1:1 to: carboplatin/paclitaxel plus durvalumab placebo followed by placebo maintenance (control arm); carboplatin/paclitaxel plus durvalumab followed by maintenance durvalumab plus olaparib placebo (durvalumab arm); or carboplatin/paclitaxel plus durvalumab followed by maintenance durvalumab plus olaparib (durvalumab + olaparib arm). The primary end points were progression-free survival (PFS) in the durvalumab arm versus control and the durvalumab + olaparib arm versus control. RESULTS: Seven hundred eighteen patients were randomly assigned. In the intention-to-treat population, statistically significant PFS benefit was observed in the durvalumab (hazard ratio [HR], 0.71 [95% CI, 0.57 to 0.89]; P = .003) and durvalumab + olaparib arms (HR, 0.55 [95% CI, 0.43 to 0.69]; P < .0001) versus control. Prespecified, exploratory subgroup analyses showed PFS benefit in dMMR (HR [durvalumab v control], 0.42 [95% CI, 0.22 to 0.80]; HR [durvalumab + olaparib v control], 0.41 [95% CI, 0.21 to 0.75]) and pMMR subgroups (HR [durvalumab v control], 0.77 [95% CI, 0.60 to 0.97]; HR [durvalumab + olaparib v control] 0.57; [95% CI, 0.44 to 0.73]); and in PD-L1-positive subgroups (HR [durvalumab v control], 0.63 [95% CI, 0.48 to 0.83]; HR [durvalumab + olaparib v control], 0.42 [95% CI, 0.31 to 0.57]). Interim overall survival results (maturity approximately 28%) were supportive of the primary outcomes (durvalumab v control: HR, 0.77 [95% CI, 0.56 to 1.07]; P = .120; durvalumab + olaparib v control: HR, 0.59 [95% CI, 0.42 to 0.83]; P = .003). The safety profiles of the experimental arms were generally consistent with individual agents. CONCLUSION: Carboplatin/paclitaxel plus durvalumab followed by maintenance durvalumab with or without olaparib demonstrated a statistically significant and clinically meaningful PFS benefit in patients with advanced or recurrent endometrial cancer.


Assuntos
Anticorpos Monoclonais , Antineoplásicos , Neoplasias do Endométrio , Ftalazinas , Piperazinas , Feminino , Humanos , Antineoplásicos/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Carboplatina , Neoplasias do Endométrio/tratamento farmacológico , Recidiva Local de Neoplasia/tratamento farmacológico , Paclitaxel , Inibidores de Poli(ADP-Ribose) Polimerases/uso terapêutico , Método Duplo-Cego
2.
Artigo em Inglês | MEDLINE | ID: mdl-37600670

RESUMO

More than 50% of breast cancers are currently defined as "Human epidermal growth factor receptor 2 (HER2) low breast cancer (BC)", with HER2 immunohistochemistry (IHC) scores of +1 or +2 with a negative fluorescence in situ hybridization (FISH) test. In most studies that compared the clinical and biological characteristics of HER2-low BC with HER2-negative BC, HER2-low was not associated with unique clinical and molecular characteristics, and it seems that the importance of HER2 in these tumors is being a docking site for the antibody portion of antibody drug conjugates (ADCs). Current pathological methods may underestimate the proportion of BCs that express low levels of HER2 due to analytical limitations and tumor heterogeneity. In this review we summarize and contextualize the most recent literature on HER2-low breast cancers, including clinical and translational studies We also review the challenges of assessing low HER2 expression in BC and discuss the current and future therapeutic landscape for these tumors.

3.
Biologics ; 17: 61-67, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37163178

RESUMO

PIK3CA activating mutations are found in 40% of advanced breast cancer and are associated with worse prognosis. PI3K blockage is associated with insulin resistance, leading to hyperglycemia and hyperinsulinemia. Alpelisib is the first PI3K inhibitor used in cancer treatment. Laboratory evidence indicated that alpelisib-induced hyperinsulinemia offsets the drug's efficacy, but insulin levels were not tested in the clinical trials that evaluated alpelisib for breast cancer. Hyperglycemia could also interfere with anti-tumor effects of PI3K inhibitors by inducing Immune tolerance and altered mitochondrial metabolism. We have monitored insulin levels in 4 breast cancer patients with concomitant metabolic syndrome treated with alpelisib, and pre-treated patients with baseline increased insulin levels with pioglitazone, a potent insulin sensitizer, to target both hyperinsulinemia and hyperglycemia, and we report the treatment course of these patients. All patients achieved glycemic control and were able to maintain alpelisib dose intensity. Duration of response to alpelisib was longer than anticipated in this treatment setting. Insulin dynamics confirmed the efficacy of pioglitazone as a specific on-target hypoglycemic and hypo-insulinemic agent in the unique setting of PI3K blockade. Our experience suggests that targeting hyperinsulinemia in patients with is safe and feasible and results in good metabolic and oncologic outcomes.

4.
Chemotherapy ; 68(2): 95-101, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36273438

RESUMO

INTRODUCTION: Fluorouracil (5-FU) pharmacokinetics are variable, leading to a risk of toxicity in some patients and underdosing in others. Therapeutic drug monitoring of 5-FU was shown to reduce toxicity and increase efficacy. This study assessed the clinical utility of starting treatment with 70-80% of BSA calculated dose and titrating according to 5-FU blood levels and toxicity. METHODS: A retrospective analysis of a prospectively collected database of 126 patients treated with regimens containing 5-FU bolus and continuous infusion for 46 h for whom the 5-FU blood level was collected at least once. Response,and date of progression, and death were collected for patients with colon and pancreatic cancer. RESULTS: In multivariate analysis, 5-FU blood levels were correlated with 5-FU dose and with age, albeit a small effect size (coefficient = 0.007). Of patients with colon cancer treated with an initial lower 5-FU dose, 18% had a therapeutic 5-FU blood level. The median survival was similar in patients with metastatic colon cancer treated with lower doses and those treated with a full dose. Of patients with pancreatic cancer treated with lower doses, 40% had therapeutic blood levels. The median survival was 13 months in patients with metastatic pancreatic cancer treated with lower 5-FU doses. CONCLUSION: Starting treatment with low 5-FU dose was associated with patient survival comparable to other published data, and a sizeable percentage of patients had therapeutic blood levels. This approach can be considered, especially in elderly and frail patients.


Assuntos
Neoplasias do Colo , Neoplasias Colorretais , Neoplasias Pancreáticas , Humanos , Idoso , Fluoruracila/efeitos adversos , Estudos Retrospectivos , Neoplasias Colorretais/patologia , Resultado do Tratamento , Infusões Intravenosas , Neoplasias Pancreáticas/tratamento farmacológico , Neoplasias do Colo/tratamento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Leucovorina/uso terapêutico , Neoplasias Pancreáticas
5.
Front Pain Res (Lausanne) ; 3: 861037, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35669038

RESUMO

The use of medical cannabis (MC) to treat cancer-related symptoms is rising. However, there is a lack of long-term trials to assess the benefits and safety of MC treatment in this population. In this work, we followed up prospectively and longitudinally on the effectiveness and safety of MC treatment. Oncology patients reported on multiple symptoms before and after MC treatment initiation at one-, three-, and 6-month follow-ups. Oncologists reported on the patients' disease characteristics. Intention-to-treat models were used to assess changes in outcomes from baseline. MC treatment was initiated by 324 patients and 212, 158 and 126 reported at follow-ups. Most outcome measures improved significantly during MC treatment for most patients (p < 0.005). Specifically, at 6 months, total cancer symptoms burden declined from baseline by a median of 18%, from 122 (82-157) at baseline to 89 (45-138) at endpoint (-18.98; 95%CI= -26.95 to -11.00; p < 0.001). Reported adverse effects were common but mostly non-serious and remained stable during MC treatment. The results of this study suggest that MC treatment is generally safe for oncology patients and can potentially reduce the burden of associated symptoms with no serious MC-related adverse effects.

6.
Oncol Lett ; 23(4): 130, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-35251350

RESUMO

KRAS mutations, which are the main cause of the pathogenesis of lethal pancreatic adenocarcinomas, impair the functioning of the GTPase subunit, thus rendering it constitutively active and signaling intracellular pathways that end with cell transformation. In the present study, the AsPC-1 cell line, which has a G12D-mutated KRAS gene sequence, was utilized as a cellular model to test peptide nucleic acid-based antisense technology. The use of peptide nucleic acids (PNAs) that are built to exhibit improved hybridization specificity and have an affinity for complementary RNA and DNA sequences, as well as a simple chemical structure and high biological stability that affords resistance to nucleases and proteases, enabled targeting of the KRAS-mutated gene to inhibit its expression at the translation level. Because PNA-based antisense molecules should be capable of binding to KRAS mRNA sequences, PNAs were utilized to target the mRNA of the mutated KRAS gene, a strategy that could lead to the development of a novel drug for pancreatic cancer. Moreover, it was demonstrated that introducing new PNA to cells inhibited the growth of cancer cells and induced apoptotic death and, notably, that it can inhibit G12D-mutated KRAS gene expression, as demonstrated by RT-PCR and western blotting. Altogether, these data strongly suggest that the use of PNA-based antisense agents is an attractive therapeutic approach to treating KRAS-driven cancers and may lead to the development of novel drugs that target the expression of other mutated genes.

7.
Harefuah ; 161(2): 101-103, 2022 Feb.
Artigo em Hebraico | MEDLINE | ID: mdl-35195971

RESUMO

INTRODUCTION: In their article published in this issue of Harefuah, Greenhouse et al. describe a complicated case of a woman with delayed diagnosis of breast cancer, presenting with spinal cord compression due to spin metastases and a locally advanced breast lesion. The patient had concurrent symptomatic infection with COVID-19, and was successfully diagnosed and treated, resulting in neurologic recovery. This case raises several issues, relevant to the care of patients with breast cancer. Late diagnosis of breast cancer is not uncommon, but little is known regarding the reasons why some women forego breast cancer screening or delay diagnosis of symptomatic breast lesions. Available information points at fear of breast cancer and fear of surgery as common causes, and it seems that interventions aimed to increase screening rates should take these findings into account. The patient described by Greenhouse et al. complained of back ache and was treated by telemedicine for a month preceding hospitalization, during the initial stages of the COVID-19 outbreak. As the implementation of telemedicine increases, organizations should issue guidelines for its use. It seems prudent to avoid using telemedicine in patients with new symptoms or recurring symptoms without a definite diagnosis. There is currently sufficient data showing that breast cancer patients are not at higher risk for COVID-19 complications compared with the general population, even while treated for their cancer. Serologic studies performed in Israel following COVID-19 vaccination found that 85-90% of patients with solid tumors have positive serologic tests after the 2nd dose of the vaccine. Studies have estimated that delaying breast cancer screening during the pandemic would result in increased breast cancer mortality. Thus, efforts should be made to continue breast cancer screening, diagnostic workup of suspicious findings and treatment of confirmed breast cancer in the event of additional outbreaks of COVID-19.


Assuntos
Neoplasias da Mama , COVID-19 , Neoplasias da Mama/diagnóstico , Neoplasias da Mama/epidemiologia , Neoplasias da Mama/terapia , Vacinas contra COVID-19 , Feminino , Humanos , Recidiva Local de Neoplasia , Pandemias , SARS-CoV-2
8.
J Oncol Pharm Pract ; 28(5): 1239-1243, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-35037791

RESUMO

INTRODUCTION: Immune checkpoint inhibitors (ICI) induced cardiac toxicity can present with non-specific symptoms and signs. Early recognition and treatment are important; however, diagnosis can be challenging. CASE REPORT: We describe a 67-year-old woman with a history of ICI induced pneumonitis who presented with dyspnea, hypoxemia and pulmonary infiltrates while treated with pembrolizumab for lung cancer, initially diagnoses with relapssed pneumonitis. When her condition did not improve with steroids, NT-pro-BNP level was tested and was markedly high, prompting additional tests for heart failure. MANAGEMENT AND OUTCOME: The patient was diagnosed with ICI induced left ventricular dysfunction and treated with steroids, beta blockers, diuretics, and ACE inhibitors. Her symptoms and imaging studies markedly improved. DISCUSSION: Here, we review the literature on ICI induced cardiac toxicity and the role of NT-pro -BNP in triage of patients presenting with dyspnea in the emergency setting. We suggest that measurement of NT-pro -BNP be utilized in patients receiving ICI's and presenting with respiratory abnormalities, to rapidly assess for possible cardiac toxicity.


Assuntos
Insuficiência Cardíaca , Inibidores de Checkpoint Imunológico , Humanos , Feminino , Idoso , Inibidores de Checkpoint Imunológico/efeitos adversos , Diagnóstico Diferencial , Cardiotoxicidade/diagnóstico , Dispneia/induzido quimicamente , Insuficiência Cardíaca/complicações , Biomarcadores
9.
Isr Med Assoc J ; 23(12): 759-765, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34954913

RESUMO

BACKGROUND: The increased susceptibility of cancer patients to coronavirus disease-2019 (COVID-19) infections and complications calls for special precautions while treating cancer patients during COVID-19 pandemics. Thus, oncology departments have had to implement a wide array of prevention measures. OBJECTIVES: To address issues associated with cancer care during the COVID-19 pandemic and to assess the implementation of measures aimed at containment of COVID-19 diffusion while allowing continuation of quality cancer care. METHODS: A national survey among oncology departments in Israel was conducted between 12 April 2020 and 14 April 2020. Eighteen heads of hospital-based oncology departments completed a self-report questionnaire regarding their institute's preparedness for treatment of cancer patients during the COVID-19 pandemic. RESULTS: In this national survey, prevention measures against COVID-19 spread were taken prior to patients' arrival and at arrival or while staying in the departments. Most participants (78-89%) reported using a quick triage of patients and caregivers prior to their entrance to the oncology units, limiting the entrance of caregivers, and reducing unnecessary visits to the clinic. Switching to oral therapies rather than intravenous ones when possible was considered by 82% and shortage in personal protective equipment was reported by five (28%) heads of oncology departments. Some differences between large and small/medium sized medical centers were observed regarding issues related to COVID-19 containment measures and changes in treatment. CONCLUSIONS: Oncology departments in Israel were able to prepare and adapt their services to guidelines and requirements related to the COVID-19 pandemic with little harm to their treatment capacity.


Assuntos
COVID-19/prevenção & controle , Hospitais/estatística & dados numéricos , Neoplasias/terapia , Equipamento de Proteção Individual/provisão & distribuição , Pesquisas sobre Atenção à Saúde , Humanos , Israel , Triagem/métodos
10.
Cancers (Basel) ; 13(16)2021 Aug 20.
Artigo em Inglês | MEDLINE | ID: mdl-34439346

RESUMO

The BNT162b2 vaccine was shown to be highly effective in reducing the risk of COVID-19 infection in healthy individuals and patients with chronic disease. However, there are little data regarding its efficacy in patients treated for cancer. We analyzed the humoral response following vaccination with the second dose of BNT162b2 in 140 patients with solid malignancies who were receiving anti-cancer therapy at the time of vaccination and 215 participants who had not been diagnosed with cancer. Multivariate analysis was performed, followed by matching the two groups by age, gender and days from vaccination. The humoral response in the cancer patient group was significantly lower than in the non-cancer group: 20/140 seronegative (14.3%) vs. 3/215 (1.4%), p < 0.001; median IgG levels 2231 AU/mL (IQR 445-8023) vs. 4100 (IQR 2231-6774) p = 0.001 respectively. The odds ratio for negative serology results in cancer patients adjusted by age and gender was 7.35 compared to participants without cancer. This effect was observed only in chemotherapy treated patients: 17/73 seronegative (23.3%) vs. 3/215 (1.4%), p < 0.001; median IgG 1361 AU/mL vs. 4100, p < 0.001 but not in patients treated with non-chemotherapeutic drugs. Reduced immunogenicity to COVID-19 vaccine among chemotherapy-treated cancer patients, raises the need to continue exercising protective measures after vaccination in these patients.

11.
Cancers (Basel) ; 13(11)2021 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-34070748

RESUMO

Risk-reducing mastectomy (RRM) is often advocated for BRCA1/2 mutation carriers who face a heightened lifetime risk of breast cancer. However, many carrier patients seek alternative risk-reducing measures. In a phase II nonrandomized trial, we previously reported that prophylactic irradiation to the contralateral breast among BRCA carriers undergoing breast-conserving treatment significantly reduced subsequent contralateral breast cancer. Herein, we report the outcome of salvage mastectomy and reconstruction in 11 patients that suffered reoccurrences of breast cancer in either the ipsilateral or contralateral breast or elected to have the procedure for risk reduction during the eight-year follow-up period. Patients' satisfaction with the procedure and physicians' assessment of the cosmetic outcome were not inferior for previously irradiated compared to non-irradiated breasts. Although the numbers are small, the results are encouraging and sustain hope in a challenging population. Our findings support continuing research as well as a discussion of risk-reduction alternatives besides mastectomy, including prophylactic breast irradiation, in BRCA1/2 mutation carriers.

12.
Mol Clin Oncol ; 14(6): 120, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33903826

RESUMO

A 63-year-old man was hospitalized for immune check-point inhibitors (ICIs) medicated pneumonitis, secondary to treatment with pembrolizumab for non-small cell lung cancer. He was treated with high dose steroids, mycophenolate mofetil, empiric broad spectrum antibiotics and empiric trimethoprim-sulfamethoxazole and intravenous immunoglobulin. Despite the aforementioned treatment, his condition continued to deteriorate. The patient was admitted to the intensive care unit. While intubated, he underwent bronchoscopy and lavage, which was analyzed for potential infectious agents. Cytomegalovirus (CMV) pneumonia was diagnosed and treated. He passed away despite antiviral treatment and maximal supportive care. CMV infection should be suspected in patients failing to recover from toxicities of ICIs with appropriate immunosuppression.

13.
Pharmaceuticals (Basel) ; 13(12)2020 Nov 30.
Artigo em Inglês | MEDLINE | ID: mdl-33265945

RESUMO

In the last decade the use of medical cannabis (MC) for palliative cancer treatment has risen. However, the choice between products is arbitrary and most patients are using Tetrahydrocannabinol (THC)-dominant cannabis products. In this study, we aimed to assess the short-term outcomes of MC treatment prescribed by oncologists in relation to the type of cannabis they receive. A comparative analysis was used to assess the differences in treatment effectiveness and safety between THC-dominant (n = 56, 52%), cannabidiol (CBD)-dominant (n = 19, 18%), and mixed (n = 33, 30%) MC treatments. Oncology patients (n = 108) reported on multiple symptoms in baseline questionnaires, initiated MC treatment, and completed a one-month follow-up. Most parameters improved significantly from baseline, including pain intensity, affective and sensory pain, sleep quality and duration, cancer distress, and both physical and psychological symptom burden. There was no significant difference between the three MC treatments in the MC-related safety profile. Generally, there were no differences between the three MC treatments in pain intensity and in most secondary outcomes. Unexpectedly, CBD-dominant oil treatments were similar to THC-dominant treatments in their beneficial effects for most secondary outcomes. THC-dominant treatments showed significant superiority in their beneficial effect only in sleep duration compared to CBD-dominant treatments. This work provides evidence that, though patients usually consume THC-dominant products, caregivers should also consider CBD-dominant products as a useful treatment for cancer-related symptoms.

14.
BMC Med ; 18(1): 281, 2020 10 21.
Artigo em Inglês | MEDLINE | ID: mdl-33081767

RESUMO

BACKGROUND: Adjuvant chemotherapy induces weight gain, glucose intolerance, and hypertension in about a third of women. The mechanisms underlying these events have not been defined. This study assessed the association between the microbiome and weight gain in patients treated with adjuvant chemotherapy for breast and gynecological cancers. METHODS: Patients were recruited before starting adjuvant therapy. Weight and height were measured before treatment and 4-6 weeks after treatment completion. Weight gain was defined as an increase of 3% or more in body weight. A stool sample was collected before treatment, and 16S rRNA gene sequencing was performed. Data regarding oncological therapy, menopausal status, and antibiotic use was prospectively collected. Patients were excluded if they were treated by antibiotics during the study. Fecal transplant experiments from patients were conducted using Swiss Webster germ-free mice. RESULTS: Thirty-three patients were recruited; of them, 9 gained 3.5-10.6% of baseline weight. The pretreatment microbiome of women who gained weight following treatment was significantly different in diversity and taxonomy from that of control women. Fecal microbiota transplantation from pretreatment samples of patients that gained weight induced metabolic changes in germ-free mice compared to mice transplanted with pretreatment fecal samples from the control women. CONCLUSION: The microbiome composition is predictive of weight gain following adjuvant chemotherapy and induces adverse metabolic changes in germ-free mice, suggesting it contributes to adverse metabolic changes seen in patients. Confirmation of these results in a larger patient cohort is warranted.


Assuntos
Neoplasias da Mama/complicações , Quimioterapia Adjuvante/efeitos adversos , Microbioma Gastrointestinal/genética , Neoplasias dos Genitais Femininos/complicações , Aumento de Peso/efeitos dos fármacos , Adolescente , Adulto , Idoso , Animais , Neoplasias da Mama/tratamento farmacológico , Estudos de Coortes , Feminino , Neoplasias dos Genitais Femininos/tratamento farmacológico , Humanos , Camundongos , Pessoa de Meia-Idade , Adulto Jovem
15.
Palliat Support Care ; 18(5): 589-601, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-31771672

RESUMO

OBJECTIVE: Advanced care planning (ACP) is central to patients' dignity and autonomy; however, in many countries it is underutilized. Studies that tested the effects of palliative care (PC) often included the rate of documented ACP as a secondary end point. We aimed to assess the contribution of PC to the rate of ACP among terminally ill patients by systematically reviewing relevant clinical trials. METHOD: PUBMED and "Cochrane trials" databases were screened for clinical trials published until October 2017 that compared the addition of PC to standard treatment and that had ACP as a primary or a secondary end point. Studies were assessed for validity by three investigators using the Cochrane Collaboration tool and the ROBINS-I tool for randomized controlled trials (RCTs) and for cohort studies, respectively. RESULTS: Twenty-six trials with 37,924 patients were included. Four were RCTs, nine were cohort studies, and 12 were cross-sectional studies. Randomized trials had the lowest risk of bias. There was a positive correlation between the addition of PC and ACP in 25 studies, among them four randomized trials. SIGNIFICANCE OF RESULTS: In this systematic review, PC was associated with improvement in the rate of ACP. Understanding the significant effect of PC on the completion of ACP is an additional emphasis on the importance of this treatment among terminally ill patients.


Assuntos
Planejamento Antecipado de Cuidados/normas , Cuidados Paliativos/métodos , Correlação de Dados , Humanos , Aceitação pelo Paciente de Cuidados de Saúde
16.
Oncotarget ; 8(16): 25963-25976, 2017 Apr 18.
Artigo em Inglês | MEDLINE | ID: mdl-28404930

RESUMO

Hormone receptor status is of significant value when deciding on anti-estrogenic adjuvant therapy for breast cancer tumors. However, while estrogen receptor (ER) regulation was intensively studied, the regulation of progesterone receptor (PR) levels has not been extensively investigated. MicroRNAs (miRNAs, miRs) are post-transcriptional negative regulators of gene expression involved in diverse cellular processes. The aim of this study was to identify miRNAs that regulate PR in breast cancer.We mapped potential miRNA binding sites for miR-181a, miR-23a and miR-26b on PR mRNA and demonstrated a direct regulation of PR by these three miRNAs by in-vitro Luciferase binding assays. Over-expression of each miRNA in MCF-7 cells resulted in a reduction in the expression levels of PR mRNA. Then, expression levels of these miRNAs were measured in Formalin-Fixed, Paraffin-Embedded (FFPE) samples of 29 ER-positive breast cancer tumors and adjacent normal breast tissues. A significant reciprocal correlation between PR mRNA and the miRNA levels were identified suggesting a role for miR-181a, miR-23a and miR-26b in PR regulation in breast cancer. Moreover, the average expression fold-changes of the three miRNAs between cancerous and normal tissues displayed an opposite trend when analyzing according to Immuno-histochemistry(IHC) status. Furthermore, miR-181a and miR-26b were found to be over-expressed in most tumor tissues supporting their role in ER-positive breast cancer development. We conclude that miR-181a, miR-23a and miR-26b act as negative regulators of PR expression in ER-positive breast cancer. The diagnostic and prognostic potential of these miRNAs in breast cancer should be further evaluated.


Assuntos
Neoplasias da Mama/genética , Regulação Neoplásica da Expressão Gênica , MicroRNAs/genética , Interferência de RNA , Receptores de Progesterona/genética , Regiões 3' não Traduzidas , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/patologia , Linhagem Celular Tumoral , Feminino , Expressão Gênica , Genes Reporter , Humanos , Pessoa de Meia-Idade , Estadiamento de Neoplasias , RNA Mensageiro/genética
17.
Eur J Obstet Gynecol Reprod Biol ; 207: 227-231, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-27890326

RESUMO

BACKGROUND: Diabetes mellitus is associated with an increased risk of recurrence in patients with ovarian cancer. Retrospective studies suggested that the use of statins, metformin and beta blockers is associated with improved prognosis in these patients. Patients with diabetes often suffer from hypertension and are usually treated concomitantly by several classes of drugs. Our aim was to assess the independent contribution of diabetes mellitus and hypertension and of the use of aspirin, statins, metformin and beta blockers on the risk of ovarian cancer recurrence and mortality. METHODS: Files of ovarian cancer patients treated between 2000 and 2012 were retrospectively reviewed. Data regarding disease characteristics, presence of diabetes mellitus and hypertension, recurrence and death were extracted. The use of drugs was assessed using the Clalit Health Services (CHS) pharmacy records. RESULTS: 143 patients treated by debulking surgery and platinum based chemotherapy were included. Median age was 62.5, 22 (15.4%) had diabetes mellitus, 61 (42.7%) had chronic hypertension. Statins were used by 43 (30%) patients, 31 (21.7%) used aspirin, 25 (17.5%) used beta blockers and 12 (8.4%) used metformin. In multivariate analysis diabetes mellitus was associated with a shorter recurrence free survival (RFS) and the use of aspirin and metformin was associated with a prolonged RFS in this cohort. Overall survival (OS) was longer in patients using aspirin and shorter in patients with hypertension. CONCLUSIONS: Our data suggests that metabolic comorbidities and commonly used drugs are associated with the prognosis of patients with ovarian cancer. Additional trials are needed to confirm these observations and test therapeutic interventions.


Assuntos
Anti-Hipertensivos/uso terapêutico , Diabetes Mellitus Tipo 2/tratamento farmacológico , Hipertensão/tratamento farmacológico , Hipoglicemiantes/uso terapêutico , Recidiva Local de Neoplasia/prevenção & controle , Neoplasias Ovarianas/diagnóstico , Idoso , Anti-Hipertensivos/efeitos adversos , Institutos de Câncer , Estudos de Coortes , Terapia Combinada , Comorbidade , Diabetes Mellitus Tipo 2/epidemiologia , Feminino , Seguimentos , Humanos , Hipertensão/epidemiologia , Hipoglicemiantes/efeitos adversos , Israel/epidemiologia , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/induzido quimicamente , Estadiamento de Neoplasias , Neoplasias Ovarianas/epidemiologia , Neoplasias Ovarianas/patologia , Neoplasias Ovarianas/terapia , Ovário/efeitos dos fármacos , Ovário/patologia , Ovário/cirurgia , Prognóstico , Estudos Retrospectivos , Fatores de Risco , Análise de Sobrevida
18.
J Surg Oncol ; 113(4): 370-3, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26751138

RESUMO

INTRODUCTION: IORT is becoming an accepted radiotherapy technique for treatment of early breast cancer. Data regarding the early complications of breast IORT are lacking. OBJECTIVES: Assess the nature and risk factors for early complications of breast conserving surgery (BCS) and intraoperative radiotherapy (IORT) with INTRABEAM®. METHODS: IORT with INTRABEAM® was administered to breast cancer patients in Carmel Medical Center as part of an institutional clinical registry project. Three hundred and ninety five patients treated during 2006-2013 were included. Clinical and treatment data and data regarding complications documented within 1 year of surgery were collected. The association between clinical and treatment variables and risk of complications was assessed. RESULTS: Complications were documented in 108 (27.3%) of patients. Grade III or IV complications were found in 5% of patients. Infections were diagnosed in 43 (10.8%) patients, seroma in 40 (10.1%), wound dehiscence in 32 (8.1%), and bleeding and hematomas in 11(2.8%). Two patients had a small size skin necrosis. Sixteen patients with a seroma had a secondary complication. All complications resolved. Diabetes mellitus and use of anticoagulants were associated with an increased risk of wound dehiscence and bleeding, respectively. CONCLUSIONS: IORT for breast cancer is safe in appropriately selected patients. Careful surgical technique and postoperative care is prudent. J. Surg. Oncol. 2016;113:370-373. © 2016 Wiley Periodicals, Inc.


Assuntos
Neoplasias da Mama/radioterapia , Neoplasias da Mama/cirurgia , Idoso , Terapia Combinada , Feminino , Hematoma/etiologia , Hemorragia/etiologia , Humanos , Cuidados Intraoperatórios/efeitos adversos , Cuidados Intraoperatórios/métodos , Complicações Intraoperatórias/etiologia
19.
Gynecol Oncol Rep ; 11: 20-2, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26076088

RESUMO

A 58 years old woman was diagnosed with squamous cell carcinoma of the uterine cervix FIGO stage IIB and was treated by concomitant radio-chemotherapy followed by simple hysterectomy. Several months later a single metastasis to the skull was diagnosed. The patient underwent craniotomy and radiotherapy and achieved a prolonged disease free survival of 20 months. Bone metastases from cervical carcinoma are usually part of widespread metastatic disease. Skull metastases are extremely rare. Selected cases of solitary bone metastases can be treated radically and achieve long term disease free survival.

20.
Fam Cancer ; 13(3): 499-505, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24838932

RESUMO

Women who report a history of endometrial cancer in a first-degree relative are at increased risk of endometrial cancer, with a hazard ratio of 1.5 to 2.0. Only a minority of patients with familial endometrial cancer have a recognized cancer syndrome. Lynch syndrome is the most common genetic syndrome associated with endometrial cancer and a marked increased risk of colon cancer. Cowden syndrome is a rare condition resulting from a mutation in the tumor suppressor gene phosphatase and tensin homolog. The risk for endometrial cancer is about five times higher in women with Cowden syndrome than in the general population. Recently, a novel germline mutation in the POLD1 gene that encodes the catalytic subunit of DNA polymerase δ was described in several families with multiple cases of endometrial cancer. This mutation is also associated with colorectal cancer. The association between BRCA1 mutations and endometrial cancer has been investigated in several studies; it appears that the risk of endometrial cancer is restricted to women with a history of tamoxifen exposure. In recent years, research has focused on genetic polymorphisms that are associated with endometrial cancer risk. Although many polymorphisms have been identified, their clinical significance is unclear and they have not been adapted for clinical practice.


Assuntos
Neoplasias do Endométrio/genética , Predisposição Genética para Doença/genética , Feminino , Humanos
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