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1.
Breast ; 75: 103712, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38492276

RESUMO

BACKGROUND: Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer associated with shorter survival and a higher likelihood of recurrence. In early TNBC, platinum chemotherapy has been shown to improve pathological complete response (pCR); however, its effect on long-term survival outcomes has not been fully elucidated. METHODS: Randomised controlled trials examining neoadjuvant or adjuvant platinum chemotherapy for early TNBC were included. Primary outcomes were disease-free survival (DFS) and overall survival (OS). Secondary outcomes were pCR, treatment adherence, grade III or IV toxicity related to chemotherapy, and quality of life. RESULTS: From 3972 records, we included 20 published studies. All studies reporting DFS and OS used carboplatin. Inclusion of platinum chemotherapy improved DFS (neoadjuvant: hazard ratio (HR) 0.63, 95% confidence interval (CI) 0.53 to 0.75; adjuvant: HR 0.69, 95% CI 0.54 to 0.88) and OS (neoadjuvant: HR 0.69, 95% CI 0.55 to 0.86; adjuvant: 0.70, 95% CI 0.50 to 0.96). Our analysis confirmed platinum chemotherapy increased pCR rates (risk ratio (RR) 1.44, 95% CI 1.31 to 1.59). There were no differences seen in examined subgroups. Platinum chemotherapy was associated with reduced dose intensity and increased haematological toxicity. CONCLUSIONS: Platinum-based chemotherapy using carboplatin in the adjuvant or neoadjuvant setting improves long-term outcomes of DFS and OS in early TNBC, with no evidence of differences by subgroup. This was at the cost of more frequent chemotherapy delays and dose reductions, and greater haematological toxicity. These findings support the use of platinum-based chemotherapy for people with early TNBC.


Assuntos
Carboplatina , Terapia Neoadjuvante , Ensaios Clínicos Controlados Aleatórios como Assunto , Neoplasias de Mama Triplo Negativas , Humanos , Neoplasias de Mama Triplo Negativas/tratamento farmacológico , Feminino , Carboplatina/administração & dosagem , Terapia Neoadjuvante/métodos , Quimioterapia Adjuvante , Intervalo Livre de Doença , Pessoa de Meia-Idade , Qualidade de Vida , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Adulto , Antineoplásicos/uso terapêutico , Resultado do Tratamento , Idoso
2.
Intern Med J ; 2023 Nov 06.
Artigo em Inglês | MEDLINE | ID: mdl-37929784

RESUMO

BACKGROUND: Chemotherapy is potentially harmful to a developing foetus, and there are limited data on the foetal impact of chemoimmunotherapy (CIT). Therefore, determining pregnancy status prior to initiation of CIT should be standard of care. AIMS: To determine how many women of childbearing age are tested for pregnancy prior to immunochemotherapy administration. METHODS: A retrospective chart review at a large Australian metropolitan cancer referral centre, including 304 women aged 18-51 years with a diagnosis of cancer receiving outpatient-based CIT between 1 May 2015 and 12 June 2020. We assessed the uptake of pregnancy screening and contraception counselling prior to and during first-line CIT. RESULTS: Only 17.3% of CIT cycles (n = 416) screened patients for pregnancy no more than 90 days prior to administration, and the median time between pregnancy screening and treatment was approximately 3 weeks. One patient with early breast cancer had a spontaneous miscarriage estimated at 3-4 weeks' gestation, and neither the patient nor the treating oncologist was aware of this event. This was also the only patient who had a pregnancy test beyond the first cycle of CIT during their treatment. CONCLUSIONS: Our results highlight a concerningly low rate of pregnancy screening in women of childbearing age receiving CIT. The implication of missing a positive pregnancy test in this group of women could result in foetal complications, accidental miscarriage, potential bleeding risks and avoidable psychosocial stress. This highlights the urgent need for guidelines to mandate pregnancy testing in women of childbearing age receiving CIT and evidence-based implementation tools.

3.
Cochrane Database Syst Rev ; 9: CD014805, 2023 09 08.
Artigo em Inglês | MEDLINE | ID: mdl-37681577

RESUMO

BACKGROUND: Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer associated with shorter survival and a higher likelihood of the cancer returning. In early TNBC, platinum-based chemotherapy has been shown to improve pathological complete response (pCR); however, its effect on long-term survival outcomes has not been fully elucidated and recommendations to include platinum chemotherapy are not consistent in international guidelines. OBJECTIVES: To evaluate the benefits and harms of platinum-based chemotherapy as adjuvant and neoadjuvant treatment in people with early triple-negative breast cancer. SEARCH METHODS: We used standard, extensive Cochrane search methods. The latest search date was 4 April 2022. SELECTION CRITERIA: We included randomised controlled trials examining neoadjuvant or adjuvant platinum chemotherapy for early TNBC. DATA COLLECTION AND ANALYSIS: We used standard Cochrane methods. Our primary outcomes were disease-free survival (DFS) and overall survival (OS). Our secondary outcomes were pCR, treatment adherence, grade III or IV toxicity related to chemotherapy, and quality of life. Prespecified subgroups included BRCA mutation status, homologous recombination deficiency (HRD) status, frequency of chemotherapy, type of platinum agent used, and the presence or absence of anthracycline chemotherapy. We assessed risk of bias using Cochrane's RoB 1 tool and certainty of evidence using the GRADE approach. MAIN RESULTS: From 3972 records, we included 20 published studies involving 21 treatment comparisons, and 25 ongoing studies. For most domains, risk of bias was low across studies. There were 16 neoadjuvant chemotherapy studies (one of which combined neoadjuvant and adjuvant therapy) and four adjuvant chemotherapy trials. Most studies used carboplatin (17 studies) followed by cisplatin (two), and lobaplatin (one). Eight studies had an anthracycline-free intervention arm, five of which had a carboplatin-taxane intervention compared to an anthracycline-taxane control. All studies reporting DFS and OS used carboplatin. Inclusion of platinum chemotherapy improved DFS in neoadjuvant and adjuvant settings (neoadjuvant: hazard ratio (HR) 0.63, 95% confidence interval (CI) 0.53 to 0.75; 7 studies, 8 treatment comparisons, 1966 participants; high-certainty evidence; adjuvant: HR 0.69, 95% CI 0.54 to 0.88; 4 studies, 1256 participants; high-certainty evidence). Platinum chemotherapy in the regimen improved OS (neoadjuvant: HR 0.69, 95% CI 0.55 to 0.86; 7 studies, 8 treatment comparisons, 1973 participants; high-certainty evidence; adjuvant: 0.70, 95% CI 0.50 to 0.96; 4 studies, 1256 participants; high-certainty evidence). Median follow-up for survival outcomes ranged from 36 to 97.6 months. Our analysis confirmed platinum chemotherapy increased pCR rates (risk ratio (RR) 1.44, 95% CI 1.31 to 1.59; 15 studies, 16 treatment comparisons, 3083 participants; high-certainty evidence). Subgroup analyses showed no evidence of differences in DFS according to BRCA mutation status, HRD status, lymph node status, or whether the intervention arm contained anthracycline chemotherapy or not. Platinum chemotherapy was associated with reduced dose intensity, with participants more likely to require chemotherapy delays (RR 2.23, 95% CI 1.70 to 2.94; 4 studies, 5 treatment comparisons, 1053 participants; moderate-certainty evidence), dose reductions (RR 1.77, 95% CI 1.56 to 2.02; 7 studies, 8 treatment comparisons, 2055 participants; moderate-certainty evidence) and early cessation of treatment (RR 1.20, 95% CI 1.04 to 1.38; 16 studies, 17 treatment comparisons, 4178 participants; moderate-certainty evidence). Increased haematological toxicity occurred in the platinum group who were more likely to experience grade III/IV neutropenia (RR 1.53, 95% CI 1.43 to 1.63; 19 studies, 20 treatment comparisons, 4849 participants; moderate-certainty evidence), anaemia (RR 8.20, 95% CI 5.66 to 11.89; 18 studies, 19 treatment comparisons, 4757 participants; moderate-certainty evidence) and thrombocytopenia (RR 7.59, 95% CI 5.10 to 11.29; 18 studies, 19 treatment comparisons, 4731 participants; moderate-certainty evidence). There was no evidence of a difference between chemotherapy groups in febrile neutropenia (RR 1.16, 95% CI 0.89 to 1.49; 11 studies, 3771 participants; moderate-certainty evidence). Renal impairment was very rare (0.4%, 2 events in 463 participants; note 3 studies reported 0 events in both arms; 4 studies; high-certainty evidence). Treatment-related death was very rare (0.2%, 7 events in 3176 participants and similar across treatment groups; RR 0.58, 95% 0.14 to 2.33; 10 studies, 11 treatment comparisons; note 8 studies reported treatment-related deaths but recorded 0 events in both groups. Thus, the RR and CIs were calculated from 3 studies rather than 11; 3176 participants; high-certainty evidence). Five studies collected quality of life data but did not report them. AUTHORS' CONCLUSIONS: Platinum-based chemotherapy using carboplatin in the adjuvant or neoadjuvant setting improves long-term outcomes of DFS and OS in early TNBC, with no evidence of differences by subgroup. This was at the cost of more frequent chemotherapy delays and dose reductions, and greater haematological toxicity, though serious adverse events including neuropathy, febrile neutropenia or treatment-related death were not increased. These findings support the use of platinum-based chemotherapy for people with early TNBC. The optimal dose and regimen are not defined by this analysis, but there is a suggestion that similar relative benefits result from the addition of carboplatin to either anthracycline-free regimens or those containing anthracycline agents.


Assuntos
Neutropenia Febril , Neoplasias de Mama Triplo Negativas , Humanos , Neoplasias de Mama Triplo Negativas/tratamento farmacológico , Platina , Carboplatina , Qualidade de Vida , Adjuvantes Imunológicos , Antraciclinas/uso terapêutico
5.
J Natl Compr Canc Netw ; 21(4): 366-372, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-37015339

RESUMO

BACKGROUND: Chemotherapy predisposes people who menstruate to abnormal uterine bleeding that can be life-threatening and may also damage ovaries, resulting in premature menopause. The purpose of this study was to explore the incidence of menstrual history documentation and counseling before, during, and after cancer treatment. PATIENTS AND METHODS: The medical charts of 137 consecutive females (self-reported) aged 18 to 49 years receiving anticancer treatment at a major tertiary metropolitan hospital in Australia between 2017 and 2020 were reviewed. Data collected included primary diagnosis, stage of cancer, treatment(s) received, rates of remission or progression, documentation of involvement of a specialist gynecologist, reproductive history, menstrual disturbances, menstruation counseling or intervention offered, and diagnosis of early ovarian failure. RESULTS: Only 16.1% of patients had their menstrual history documented at the initial consult, and 49.6% had their menstrual history documented at a subsequent consult with their treating oncologist or hematologist. Most (82.4%) patients with a menstrual history documented experienced menstrual disturbance posttreatment, most commonly amenorrhea (48.0%), followed by menopause or menopause symptoms (20.6%), irregular menstrual bleeding (16.7%), menorrhagia (13.7%), dysmenorrhea (3.9%), and iron deficiency from bleeding (2.9%). Menopause/Menopausal symptoms and iron deficiency were more likely to be treated than other disturbances. CONCLUSIONS: Menstruation disturbance is a common side effect of cancer treatment. Menstrual care should be integral to cancer care for people who menstruate, and higher engagement could be achieved through education of medical and allied health staff, information technology systems automating prompts and referral pathways, regular audits to ensure compliance, better alliances between cancer and fertility specialists, and the creation of accessible patient information to promote awareness and facilitate discussion.


Assuntos
Menstruação , Neoplasias , Feminino , Humanos , Amenorreia , Menopausa , Aconselhamento , Neoplasias/epidemiologia , Neoplasias/terapia
6.
Pharmaceuticals (Basel) ; 15(7)2022 Jun 22.
Artigo em Inglês | MEDLINE | ID: mdl-35890071

RESUMO

Breast cancers are most frequently oestrogen receptor (ER) and progesterone receptor (PR) positive and [18F]Fluorodeoxyglucose PET-CT (FDG) has lower sensitivity for these subtypes. The gastrin-releasing peptide receptor (GRPR) is overexpressed in ER+/PR+ breast cancers. This study assessed the safety and potential of [64Cu]Cu-Sarcophagine (SAR)-Bombesin PET/CT (BBN) in re-staging metastatic ER+/PR+/human epidermal growth-factor-2-negative (HER2-) breast cancer. Seven patients with metastatic ER+/PR+/HER2- breast cancer undergoing staging underwent [64Cu]Cu-SAR-BBN PET-CT. Bloods, vital signs and electrocardiogram, blood tracer-clearance and dosimetry were undertaken. GRPR status was assessed in available metastatic biopsy samples. Staging with conventional imaging ([18F]FDG, bone scan and diagnostic CT) was within 3 weeks of [64Cu]Cu-SAR-BBN PET/CT. PET scans were assessed visually and quantitatively. Seven patients underwent imaging. One of the seven had de-novo metastatic breast cancer and six of the seven recurrent metastatic disease. Two of the seven had lobular subtype. No adverse events were reported. All seven patients were positive on conventional imaging (six of seven on FDG). [64Cu]Cu-SAR-BBN imaging was positive in five of the seven. Both [64Cu]Cu-SAR-BBN-negative patients had disease identified on [18F]FDG. One patient was [64Cu]Cu-SAR-BBN positive/[18F]FDG negative. Four of seven patients were [64Cu]Cu-SAR-BBN positive/[18F]FDG positive. In these four, mean SUVmax was higher for [64Cu]Cu-SAR-BBN than [18F]FDG (SUVmax 15 vs. 12). In the classical lobular subtype (two of seven), [64Cu]Cu-SAR-BBN was more avid compared to [18F]FDG (SUVmax 20 vs. 11, and 20 vs. <3). Dosimetry calculations estimated whole-body effective dose for 200 MBq of [64Cu]Cu-SAR-BBN to be 1.9 mSv. [64Cu]Cu-SAR-BBN PET/CT appears safe and may have diagnostic value in metastatic ER+/PR+/HER2- breast cancer, particularly the lobular subtype. Further evaluation is warranted.

7.
Breast Cancer Res Treat ; 191(3): 501-511, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34853987

RESUMO

PURPOSE: Genomic tests improve accuracy of risk prediction for early breast cancers but these are expensive. This study evaluated the clinical utility of EndoPredict®, in terms of impact on adjuvant therapy recommendations and identification of parameters to guide selective application. METHODS: Patients with ER-positive, HER2-negative, and early-stage invasive breast cancer were tested with EndoPredict®. Two cohorts were recruited: one consecutively and another at clinical team discretion. Systemic treatment recommendations were recorded before and after EndoPredict® results were revealed to the multidisciplinary team. RESULTS: 233 patients were recruited across five sites: 123 consecutive and 110 at clinical team discretion. In the consecutive cohort 50.6% (62/123) cases were classified high risk of recurrence by EndoPredict®, compared with 62.7% (69/110) in the selective cohort. A change in treatment recommendation was significantly more likely (p < 0.0001) in the selective cohort (43/110, 39.1%) compared to the consecutive group (11/123, 8.9%). The strongest driver of selective recruitment was intermediate grade histology, whilst logistic regression modelling demonstrated that nodal status (p < 0.001), proliferative rate (p = 0.001), and progesterone receptor positivity (p < 0.001) were the strongest discriminators of risk. CONCLUSION: Whilst molecular risk can be predicted by traditional variables in a high proportion of cases, EndoPredict® had a greater impact on treatment decisions in those cases selected for testing at team discretion. This is indicative of the robust ability of the clinical team to identify cases most likely to benefit from testing, underscoring the value of genomic tests in the oncologists' tool kit.


Assuntos
Neoplasias da Mama , Médicos , Neoplasias da Mama/diagnóstico , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/genética , Quimioterapia Adjuvante , Estudos de Coortes , Feminino , Genômica , Humanos , Prognóstico , Receptor ErbB-2/genética , Receptores de Estrogênio/genética
8.
J Med Imaging Radiat Oncol ; 66(6): 731-737, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34676675

RESUMO

INTRODUCTION: 18 F-Fludeoxyglucose PET-CT (FDG) is increasingly used to stage breast cancer. Most breast cancers express the Oestrogen Receptor (ER) and Progesterone Receptor (PR), and this subtype demonstrates lower activity on FDG imaging. Somatostatin receptors (SSTR) offer a potentially improved radiotracer target for ER+ /PR+ breast cancer. We present the first in vivo clinical study comparing 68 Ga-DOTATATE PET-CT (DOTA) to FDG and conventional imaging (bone scan and diagnostic CT), in metastatic ER+ /PR+ human epidermal growth factor receptor 2 (HER2) negative breast cancer. METHODS: Patients with clinically progressive metastatic ER+ /PR+ HER2- breast cancer underwent restaging with DOTA, FDG and conventional imaging. Scans were analysed visually, and semi-quantitatively. Wilcoxon-Rank Scoring was used to assess significance. RESULTS: Ten women (mean age 57 years) underwent imaging. 8/10 demonstrated disease on both DOTA and FDG. 2/10 positive on conventional imaging, but DOTA- /FDG- , and had no disease progression at 1-year follow-up. Heterogeneity of uptake was seen between DOTA and FDG with 5 bone lesions DOTA+ /FDG- and 1 bone lesion FDG+ /DOTA- . Twenty-one visceral lesions were FDG+ /DOTA- (2 patients), with 10/21 identified on conventional imaging. Maximum standard uptake values (SUV max) of DOTA were greater than FDG (10.9 vs. 6.6, P = ns). Four sites were biopsied (3 patients). 3/4 had high ER/PR expression (mean DOTA SUV max 9.4) and 1/4 low ER/PR expression (DOTA SUV max 3.1). CONCLUSION: Whilst we have not demonstrated DOTA to be superior to FDG in staging of ER+ /PR+ breast cancers, DOTA may have a role in assessing HR status and treatment decisions; further evaluation of this is warranted.


Assuntos
Neoplasias da Mama , Compostos Organometálicos , Neoplasias da Mama/diagnóstico por imagem , Feminino , Fluordesoxiglucose F18 , Radioisótopos de Gálio , Humanos , Pessoa de Meia-Idade , Projetos Piloto , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada/métodos , Tomografia por Emissão de Pósitrons , Estudos Prospectivos , Cintilografia , Compostos Radiofarmacêuticos , Receptores de Estrogênio/metabolismo , Receptores de Progesterona/metabolismo , Tomografia Computadorizada por Raios X
9.
Ocul Surf ; 18(1): 108-113, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31669349

RESUMO

PURPOSE: Aromatase inhibitors (AIs) limit the synthesis of oestrogen in peripheral tissues thus lowering levels of oestrogen. The primary aim was to evaluate whether women treated with AIs have altered dry eye symptoms and signs. A sub-aim was to investigate whether symptoms of dry eye in postmenopausal women were associated with symptoms of non-eye pain, ocular pain and self-rated pain perception. METHODS: This cross-sectional, observational, single visit study recruited 56 postmenopausal women (mean age 64.1 + 7.9 years) and 52 undergoing AI treatment (mean age 66.6 + 9.0). Ocular symptoms (OSDI, MGD14) and pain questionnaires (PSQ, OPAS) were administered and signs of dry eye and meibomian gland dysfunction were evaluated. RESULTS: Almost half of each group reported dry eye symptoms, defined as OSDI>12 (48% control, 46% AI). The PSQ score was significantly higher in the AI group (p = 0.04). Neither frequency or severity of dry eye (or MGD) symptoms scores were significantly different between groups. In the AI group, meibomian gland expressibility score was worse (p = 0.003); there were no differences in any other signs. Higher OSDI scores were associated with higher OPAS eye-pain scores (r = 0.49, p < 0.001), but not OPAS non-eye pain (r = 0.09, p = 0.35). Pain perception (PSQ) showed a moderate positive association with OPAS eye-pain (r = 0.30, p = 0.003). CONCLUSIONS: In this study elevated ocular symptoms were observed in both the AI treated and the untreated groups, with no difference between the groups. Women undergoing AI treatment for early stage breast cancer had worse meibum expressibility score and increased pain perception compared to an untreated group of women.


Assuntos
Síndromes do Olho Seco , Idoso , Inibidores da Aromatase/efeitos adversos , Estudos Transversais , Síndromes do Olho Seco/induzido quimicamente , Síndromes do Olho Seco/diagnóstico , Doenças Palpebrais , Feminino , Humanos , Glândulas Tarsais , Pessoa de Meia-Idade , Lágrimas
10.
Aust J Gen Pract ; 48(5): 278-283, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-31129938

RESUMO

BACKGROUND: Breast cancer is the most common cancer in women in Australia. Breast cancer is a heterogeneous disease; subtypes are defined by their biology with prognostic and therapeutic implications. Advancements in treatment have led to improved survival and quality of life for patients with advanced breast cancer. OBJECTIVE: The aim of this article is to provide a concise update regarding the current systemic management of advanced breast cancer, including novel treatment options. DISCUSSION: The aim of treatment in advanced breast cancer is to prolong life, manage symptoms and improve quality of life. The general practitioner is an important member of the patient's multidisciplinary team.


Assuntos
Neoplasias da Mama/tratamento farmacológico , Antineoplásicos Imunológicos/uso terapêutico , Austrália/epidemiologia , Neoplasias da Mama/epidemiologia , Estrogênios não Esteroides/uso terapêutico , Feminino , Humanos , Moduladores Seletivos de Receptor Estrogênico/uso terapêutico
11.
Support Care Cancer ; 26(1): 305-312, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-28852873

RESUMO

BACKGROUND: Chemotherapy-induced alopecia is a common and distressing adverse event for patients. Scalp cooling to reduce this alopecia has been available in Europe for more than a decade, but only recently introduced in Australia. The aim of this study was to qualitatively explore health professionals' perceptions of the barriers and enablers to the implementation of scalp cooling in Australian cancer centres. METHODS: Using a qualitative methodology, telephone interviews were conducted with 21 health professionals working in a tumour stream where chemotherapy-induced alopecia is an adverse event of treatment. Participants were recruited from five centres in Australia where scalp cooling is currently available and one centre without access to the technology. RESULTS: Four interrelated themes were identified: (1) health professional attitudes, (2) concerns for patient equity, (3) logistical considerations and (4) organisational support. CONCLUSIONS: This qualitative study provides the first methodological exploration of Australian health professionals' perceptions of barriers and enablers to scalp cooling uptake. The results highlighted health professional support drives the introduction of scalp cooling. Integration of the technology requires adjustments to nursing practice to manage the increased time, workload and change in patient flow. Strategies to manage the change in practice and organisational support for change in work flow are essential for successful implementation into routine care.


Assuntos
Alopecia/terapia , Couro Cabeludo/irrigação sanguínea , Adulto , Alopecia/induzido quimicamente , Atitude do Pessoal de Saúde , Austrália , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pesquisa Qualitativa
13.
J Natl Compr Canc Netw ; 15(9): 1131-1139, 2017 09.
Artigo em Inglês | MEDLINE | ID: mdl-28874598

RESUMO

Background: For trials to validly evaluate new treatments, comparison against the best existing alternative treatment is essential. We reviewed the care provided to women in control arms of breast cancer clinical trials to estimate the proportion consistent with the standard of care as defined in clinical guidelines. Methods: We analyzed phase III randomized controlled breast cancer trials comparing drug treatments with "standard care," enrolling between 2004 and 2014, and registered on ClinicalTrials.gov Our primary outcome was the proportion of trials in which treatment in the control arm was consistent with concurrent NCCN Guidelines. A secondary analysis assessed trials recruiting outside the United States that provided control group therapy not consistent with NCCN Guidelines, comparing them with the German Gynecological Oncology Group (AGO) guidelines. We assessed associations between the primary outcome and a priori selected trial characteristics. Results: This study included 210 trials that recruited 229,182 women worldwide; 29% of trials (60/210) did not provide control group treatment that was consistent with NCCN Guidelines. For trials not recruiting in the United States, results were similar; in 21% of trials, control arm treatment was inconsistent with both AGO and NCCN Guidelines. Factors significantly associated with offering control arm treatment that were inconsistent with guidelines were time period (later trials were less likely to be consistent), breast cancer stage and type (trials in early-stage breast cancer and estrogen receptor-negative disease were less likely consistent), and recruitment in ≥4 countries and recruitment outside the United States. Conclusions: To ensure that clinical trials achieve their goal of obtaining the best information to guide patient treatment, the question of how investigators chose and describe "standard care" for control arm participants warrants further investigation.


Assuntos
Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Ensaios Clínicos como Assunto , Feminino , Humanos
14.
BMC Cancer ; 16(1): 929, 2016 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-27905893

RESUMO

BACKGROUND: Multidisciplinary team (MDT) meetings are used to optimise expert decision-making about treatment options, but such expertise is not digitally transferable between centres. To help standardise medical decision-making, we developed a machine learning model designed to predict MDT decisions about adjuvant breast cancer treatments. METHODS: We analysed MDT decisions regarding adjuvant systemic therapy for 1065 breast cancer cases over eight years. Machine learning classifiers with and without bootstrap aggregation were correlated with MDT decisions (recommended, not recommended, or discussable) regarding adjuvant cytotoxic, endocrine and biologic/targeted therapies, then tested for predictability using stratified ten-fold cross-validations. The predictions so derived were duly compared with those based on published (ESMO and NCCN) cancer guidelines. RESULTS: Machine learning more accurately predicted adjuvant chemotherapy MDT decisions than did simple application of guidelines. No differences were found between MDT- vs. ESMO/NCCN- based decisions to prescribe either adjuvant endocrine (97%, p = 0.44/0.74) or biologic/targeted therapies (98%, p = 0.82/0.59). In contrast, significant discrepancies were evident between MDT- and guideline-based decisions to prescribe chemotherapy (87%, p < 0.01, representing 43% and 53% variations from ESMO/NCCN guidelines, respectively). Using ten-fold cross-validation, the best classifiers achieved areas under the receiver operating characteristic curve (AUC) of 0.940 for chemotherapy (95% C.I., 0.922-0.958), 0.899 for the endocrine therapy (95% C.I., 0.880-0.918), and 0.977 for trastuzumab therapy (95% C.I., 0.955-0.999) respectively. Overall, bootstrap aggregated classifiers performed better among all evaluated machine learning models. CONCLUSIONS: A machine learning approach based on clinicopathologic characteristics can predict MDT decisions about adjuvant breast cancer drug therapies. The discrepancy between MDT- and guideline-based decisions regarding adjuvant chemotherapy implies that certain non-clincopathologic criteria, such as patient preference and resource availability, are factored into clinical decision-making by local experts but not captured by guidelines.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias da Mama/diagnóstico , Neoplasias da Mama/tratamento farmacológico , Tomada de Decisão Clínica , Aprendizado de Máquina , Modelos Teóricos , Equipe de Assistência ao Paciente , Adulto , Idoso , Idoso de 80 Anos ou mais , Algoritmos , Quimioterapia Adjuvante , Terapia Combinada , Simulação por Computador , Feminino , Humanos , Pessoa de Meia-Idade , Aprendizado de Máquina Supervisionado
15.
Psychooncology ; 25(7): 787-94, 2016 07.
Artigo em Inglês | MEDLINE | ID: mdl-26514374

RESUMO

BACKGROUND: Family members (FMs) regularly attend oncology consultations. However, limited studies have assessed actual behaviours of oncologists, patients and FMs - particularly during decision-making. The current study aimed the following: (i) to rigorously develop a family (kin) interaction coding system (KINcode) capturing communication and decision-making behaviours of FMs and family-relevant behaviours of oncologists and patients and (ii) to apply KINcode to initial oncology consultations. METHODS: The 80-item KINcode system was developed and applied to 72 transcripts of audiotaped medical/radiation oncology consultations including an FM, collected as part of two previous studies. RESULTS: The role of the FM varied considerably within the one encounter, with 33% of FMs assuming three or more roles across the four consultation stages. Whilst most FMs asked treatment decision questions (71%), a minority engaged in other behaviours such as prompting patient questions (4%) or providing information relevant to the decision to the oncologist (18%). Although oncologists rarely initiated interaction with FMs such as in rapport building (18%) or asking FMs questions (25%), they were typically fully responsive to FM questions (90%). Many patients asked their FM a question (42%), but few elicited the FM's decision preferences (4%). CONCLUSIONS: This study provides novel insights into the complex nature of family involvement. The findings highlight potentially positive FM-focused consultation behaviours such as oncologist responsiveness to family questions and potential areas for improvement such as rapport building, invitation of questions and validation of the family's role. Family-specific communication skills training should be considered in medical student and professional education settings. Copyright © 2015 John Wiley & Sons, Ltd.


Assuntos
Família , Oncologia/normas , Neoplasias/terapia , Relações Médico-Paciente , Encaminhamento e Consulta/normas , Gravação em Fita , Tomada de Decisões , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/psicologia , Oncologistas
16.
Cochrane Database Syst Rev ; (12): CD008792, 2013 Dec 18.
Artigo em Inglês | MEDLINE | ID: mdl-24347031

RESUMO

BACKGROUND: Combination chemotherapy can cause greater tumour cell kill if the drug dose is not compromised, while sequential single agent chemotherapy may allow for greater dose intensity and treatment time, potentially meaning greater benefit from each single agent. In addition, sequentially using single agents might cause less toxicity and impairment of quality of life, but it is not known whether this might compromise survival time. OBJECTIVES: To assess the effect of combination chemotherapy compared to the same drugs given sequentially in women with metastatic breast cancer. SEARCH METHODS: We searched the Cochrane Breast Cancer Group Specialised Register, using the search terms "advanced breast cancer" and "chemotherapy", MEDLINE and EMBASE on 31 October 2013. The World Health Organization International Clinical Trials Registry Platform and ClinicalTrials.gov were also searched (22 March 2012). SELECTION CRITERIA: Randomised controlled trials of combination chemotherapy compared to the same drugs used sequentially in women with metastatic breast cancer in the first-, second- or third-line setting. DATA COLLECTION AND ANALYSIS: Two authors independently extracted data from published trials. Hazard ratios (HR) were derived from time-to-event outcomes where possible, and a fixed-effect model was used for meta-analysis. Response rates were analysed as dichotomous variables (risk ratios (RR)), and toxicity and quality of life data were extracted where available. MAIN RESULTS: Twelve trials reporting on nine treatment comparisons (2317 patients randomised) were identified. The majority of trials (10 trials) had an unclear or high risk of bias. Time-to-event data were collected for nine trials for overall survival and eight trials for progression-free survival. All 12 trials reported results for tumour response. In the 12 trials there were 1023 deaths in 2317 women randomised. There was no difference in overall survival, with an overall HR of 1.04 (95% confidence interval (CI) 0.93 to 1.16; P = 0.45), and no significant heterogeneity. This result was consistent in the four subgroups analysed (risk of bias, line of chemotherapy, type of schema of chemotherapy, and relative dose intensity). In particular, there was no difference in survival according to the type of schema of chemotherapy, that is whether chemotherapy was given on disease progression or after a set number of cycles. In the eight trials that reported progression-free survival, 678 women progressed out of the 886 women randomised. The combination arm had a higher risk of progression than the sequential arm (HR 1.16; 95% CI 1.03 to 1.31; P = 0.01) with no significant heterogeneity. This result was consistent in all subgroups. Overall tumour response rates were higher in the combination arm (RR 1.13; 95% CI 1.03 to 1.24; P = 0.008) but there was significant heterogeneity for this outcome across the trials. In the seven trials that reported treatment-related deaths, there was no significant difference between the two arms, although the CIs were very wide due to the small number of events (RR 1.53; 95% CI 0.71 to 3.29; P = 0.28). The risk of febrile neutropenia was higher in the combination arm (RR 1.32; 95% CI 1.06 to 1.65; P = 0.01). There was no statistically significant difference in the risk of neutropenia, nausea and vomiting, or treatment-related deaths. Overall quality of life showed no difference between the two groups, but only three trials reported this outcome. AUTHORS' CONCLUSIONS: Sequential single agent chemotherapy has a positive effect on progression-free survival, whereas combination chemotherapy has a higher response rate and a higher risk of febrile neutropenia in metastatic breast cancer. There is no difference in overall survival time between these treatment strategies, both overall and in the subgroups analysed. In particular, there was no difference in survival according to the schema of chemotherapy (giving chemotherapy on disease progression or after a set number of cycles) or according to the line of chemotherapy (first-line versus second- or third-line). Generally this review supports the recommendations by international guidelines to use sequential monotherapy unless there is rapid disease progression.


Assuntos
Antineoplásicos/administração & dosagem , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Neoplasias da Mama/tratamento farmacológico , Antineoplásicos/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Neoplasias da Mama/mortalidade , Neoplasias da Mama/patologia , Progressão da Doença , Intervalo Livre de Doença , Feminino , Humanos , Náusea/induzido quimicamente , Neutropenia/induzido quimicamente , Ensaios Clínicos Controlados Aleatórios como Assunto , Vômito/induzido quimicamente
17.
Med J Aust ; 197(9): 507-11, 2012 Nov 05.
Artigo em Inglês | MEDLINE | ID: mdl-23121587

RESUMO

OBJECTIVES: To identify gaps in colorectal cancer clinical trials research in Australia and to suggest and prioritise trials to fill those gaps. DESIGN, SETTING AND PARTICIPANTS: Retrospective review of colorectal cancer trial activity from 1 January 2005 to 1 July 2011 in Australia and internationally, followed by a consensus meeting of consumers, health care professionals, researchers and funding agencies. MAIN OUTCOME MEASURES: Proportion of Phase III and randomised clinical trials in the areas of prevention, screening, surgery, adjuvant therapy, advanced disease and behavioural interventions, and priority areas of research identified by participants at the consensus meeting. RESULTS: The registry search identified 76 colorectal cancer clinical trials (all phases) registered in Australia from 1 January 2005 to 1 July 2011, of which 51 were Phase III or randomised, and 323 Phase III and randomised trials registered worldwide. In Australia, most trials were in advanced colorectal cancer (32), screening (10), and behavioural interventions (9). Worldwide, most Phase III or randomised trials were in advanced disease (94, 29.1%), surgery (64, 19.8%), behavioural interventions (38, 11.8%), and screening (30, 9.3%). At the consensus meeting, all participant groups emphasised the need for research in secondary prevention, screening, individualised treatments and follow-up care after treatment for colorectal cancer. CONCLUSIONS: There is a mismatch between the high proportion of registered trials in advanced colorectal cancer and the areas of priority identified. The development of specific trials in these priority areas depends on the availability of funding and the existence of plausible interventions likely to improve patient outcomes.


Assuntos
Ensaios Clínicos como Assunto , Neoplasias Colorretais , Prioridades em Saúde , Austrália , Neoplasias Colorretais/diagnóstico , Neoplasias Colorretais/terapia , Gerenciamento Clínico , Humanos , Avaliação de Resultados em Cuidados de Saúde , Estudos Retrospectivos
18.
Asia Pac J Clin Oncol ; 8(3): 292-302, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22897801

RESUMO

AIMS: The aim of this study is to analyze the prognostic factors for overall and relapse-free survival that may help select patients for pulmonary metastasectomy and inform their prognosis. METHODS: From 1978 to 2008 130 patients underwent pulmonary metastasectomy for bone (osteosarcoma, chondrosarcoma and Ewing's sarcoma) and soft tissue sarcomas. Outcome measures analyzed were time to death and relapse and Cox regression models analyzed the association of prognostic factors. RESULTS: In total 114 patients were analyzed. The 5-year post-metastasectomy overall survival rate was 43%. The 5-year relapse-free survival rate was 19%. In the multivariate analysis, an incomplete surgical resection (P = 0.02) was associated with an increased risk of death. There was weak evidence that a diameter of the largest resected metastasis ≥ 1.8 cm (P = 0.07) and a disease-free interval of ≤ 18 months (P = 0.08) were associated with an increased risk of death. CONCLUSION: Poor prognostic factors for overall survival after a pulmonary metastasectomy are an incomplete surgical resection, a large diameter of the biggest resected metastasis and a short disease-free interval. The role of perioperative chemotherapy is uncertain.


Assuntos
Neoplasias Ósseas/cirurgia , Neoplasias Pulmonares/secundário , Neoplasias Pulmonares/cirurgia , Metastasectomia/métodos , Pneumonectomia/métodos , Sarcoma/cirurgia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Austrália , Neoplasias Ósseas/patologia , Condrossarcoma/patologia , Condrossarcoma/secundário , Condrossarcoma/cirurgia , Estudos de Coortes , Intervalo Livre de Doença , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Metástase Neoplásica , Osteossarcoma/patologia , Osteossarcoma/secundário , Osteossarcoma/cirurgia , Prognóstico , Estudos Retrospectivos , Sarcoma/patologia , Sarcoma/secundário , Sarcoma de Ewing/patologia , Sarcoma de Ewing/secundário , Sarcoma de Ewing/cirurgia , Taxa de Sobrevida , Adulto Jovem
20.
Health Res Policy Syst ; 9: 30, 2011 Jun 26.
Artigo em Inglês | MEDLINE | ID: mdl-21703017

RESUMO

BACKGROUND: The Australian Cancer Trials website (ACTO) was publicly launched in 2010 to help people search for cancer clinical trials recruiting in Australia, provide information about clinical trials and assist with doctor-patient communication about trials. We describe consumer involvement in the design and development of ACTO and report our preliminary patient evaluation of the website. METHODS: Consumers, led by Cancer Voices NSW, provided the impetus to develop the website. Consumer representative groups were consulted by the research team during the design and development of ACTO which combines a search engine, trial details, general information about trial participation and question prompt lists. Website use was analysed. A patient evaluation questionnaire was completed at one hospital, one week after exposure to the website. RESULTS: ACTO's main features and content reflect consumer input. In February 2011, it covered 1, 042 cancer trials. Since ACTO's public launch in November 2010, until the end of February 2011, the website has had 2, 549 new visits and generated 17, 833 page views. In a sub-study of 47 patient users, 89% found the website helpful for learning about clinical trials and all respondents thought patients should have access to ACTO. CONCLUSIONS: The development of ACTO is an example of consumers working with doctors, researchers and policy makers to improve the information available to people whose lives are affected by cancer and to help them participate in their treatment decisions, including consideration of clinical trial enrolment. Consumer input has ensured that the website is informative, targets consumer priorities and is user-friendly. ACTO serves as a model for other health conditions.

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