Antibody-Drug Conjugates in Breast Cancer: A Comprehensive Review of How to Selectively Deliver Payloads.

Antibody-drug conjugates (ADCs) have surfaced as a promising group of anticancer agents employing the precise targeting capacity of monoclonal antibodies to transport highly effective cytotoxic payloads. Compared to conventional chemotherapy, they aim to selectively eradicate cancer cells while minimizing off-target toxicity on healthy tissues. An increasing body of evidence has provided support for the efficacy of ADCs in treating breast cancer across various contexts and tumor subtypes, resulting in significant changes in clinical practice. Nevertheless, unlocking the full potential of these therapeutic agents demands innovative molecular designs to address complex clinical challenges, including drug resistance, tumor heterogeneity, and treatment-related adverse events. This thorough review provides an in-depth analysis of the clinical data on ADCs, offering crucial insights from pivotal clinical trials that assess the efficacy of ADCs in diverse breast cancer settings. This aids in providing a comprehensive understanding of the current state of ADCs in breast cancer therapy, while also providing valuable perspectives for the future.

Malignant Phyllodes Tumor of the Breast: A Practice Review.

INTRODUCTION: Phyllodes tumor (PT) of the breast, particularly malignant phyllodes tumor (mPT), is a rare fibroepithelial neoplasm. A complex diagnosis is based on pathologic, radiologic, and clinical findings, with controversies about what is the best therapeutic strategy. OBJECTIVE: Our objective was to provide an overview of the clinical, pathologic, and therapeutic aspects of this rare tumor. CONCLUSIONS: mPT is a rare presentation of breast cancer and a challenge in clinical practice. A multidisciplinary approach should take into account some aspects like pathogenic mutations and hereditary syndromes. Oncologic surgery is the fundamental approach, and the use of adjuvant therapies is still controversial due to the lack of clinical trials. Treatment recommendations should be individualized according to patient risk and preferences. Prospective studies are fundamental to clarifying the best treatment for these tumors.

Aplicação do instrumento termômetro de estresse em pacientes idosos com câncer: estudo piloto / Application of the distress thermometer in elderly patients with cancer: pilot study

JUSTIFICATIVA E OBJETIVOS: Evidências apontam que cerca de metade dos pacientes com câncer apresentam altos níveis de estresse, condição que ainda permanece pouco diagnosticada e tratada. Este estudo piloto visou investigar a utilização do instrumento Termômetro de Estresse (TE) aplicando-o a pacientes idosos em vigência de tratamento quimioterápico, de forma a identificar possíveis fatores preditivos de estresse nessa população. MÉTODO: Foram selecionados aleatoriamente 40 pacientes com idade igual ou superior a 65 anos, portadores de neoplasia sólida ou hematológica, em tratamento quimioterápico nos serviços vinculados à Faculdade de Medicina do ABC. Estes responderam ao TE e a questionários para avaliação de qualidade de vida, atividades da vida diária, escala de sintomas relacionados à quimioterapia, escala de depressão geriátrica, mini-exame do estado mental e mini-avaliação nutricional. RESULTADOS: A pontuação média do TE foi de 4,20, sendo que 65% dos pacientes apresentaram alto nível de estresse (pontuação de corte maior ou igual a 4). Verificou-se a correlação do TE ao Questionário de Atividades Instrumentais de Lawton (p = 0,035), à Escala de Sintomas de Edmonton (p = 0,043) e à Escala de Depressão Geriátrica (p = 0,030). CONCLUSÃO: Pacientes idosos em tratamento quimioterápico sofrem de estresse, que pode estar relacionado à diminuição da capacidade de desenvolver atividades instrumentais da vida diária, aos próprios sintomas do regime quimioterápico e à manifestação de sintomas de depressão.

BACKGROUND AND OBJECTIVES: Up to half of all cancer patients experience clinically significant levels of stress and much of this stress goes unrecognized and untreated. This pilot study aimed to evaluate the Distress Thermometer (DT) in elderly patients undergoing chemotherapy in oncology services related to the School of Medicine of ABC and to identify possible predictors. METHOD: We randomly selected 40 patients aged over 65 years with hematologic or solid tumors undergoing chemotherapy treatment. They were asked to respond to the DT and questionnaires for assessing quality of life, activities of daily living, symptoms related to chemotherapy, geriatric depression scale, mini-mental state and mini-nutritional assessment. RESULTS : Regarding the DT, the average score was 4.20 and 26 patients (65% of total) had scores above 4 (the optimal DT cutoff score). In the correlation analysis, we obtained a correlation of TD to the questionnaires of Instrumental Activities of Daily Living (p= 0.035), Edmonton Symptom Assessment Scale (p =0.043) and Geriatric Depression Scale (p=0.030). CONCLUSION: Elderly patients undergoing chemotherapy suffer from stress that can be related to the decline in their ability to develop instrumental daily activities, to the symptoms related to the chemotherapy and to the development of depression symptoms.

[How to consent without understanding?]. / Como consentir sem entender?

BACKGROUND: The Consent Form (CF) is an important document that informs patients about benefits and risks of a study, it assures patients the right to accept or reject participation in a procedure related to their health. Some authors believe that Consent Forms are complex and difficult to read for most people. OBJECTIVE: Correlate the difficulty of understanding CF, through the Flesch Index (FI) and Flesch-Kincaid Index (FKI), used in our oncology outpatient clinic, with the profile of our patient's education. We also wanted to verify readability and presence of the information which must be part of these CF according to item IV.1 from Resolution 196/96 of the Brazilian Health Council. RESULTS: We obtained 10 CFs, according to FI and FKI the mean was 38.5 and 18.16 respectively, indicating that, at least, 18 years of study are needed for the comprehension. This result is incompatible with the Brazilian population where more than 50% have less than 8 years of study. According to the quality of the CF, they were well elaborated, and had most of the necessary contents. When the authors correlated FKI and quality of CF, they concluded that the quality of CF does not correlate with readability (p= 0.884, Pearson correlation coefficients 0.053). CONCLUSION: Despite the good content quality of most of the analyzed CF, their level of reading difficulty is not compatible with the literacy skills of a major part of the Brazilian population.

Como consentir sem entender? / How consent without knowing?

INTRODUÇÃO: Termo de Consentimento Livre e Esclarecido (TCLE) é o documento que informa sobre os benefícios e riscos de um estudo. Alguns autores concluíram que os TCLE são de difícil compreensão. OBJETIVO: Correlacionar grau de dificuldade dos TCLE, pelos índices de Flesch (IF) e Flesch-Kincaid (ILFK), utilizados num ambulatório de oncologia ao perfil de escolaridade dos usuários desse mesmo serviço, bem como verificar a legibilidade e a presença das informações obrigatórias segundo o item IV.1 da Resolução 196/96 do Conselho Nacional de Saúde. RESULTADOS: Foram obtidos 10 TCLE; segundo o IF e ILFK, a média foi de 38,5 e 18,16 respectivamente, mostrando ser necessário aproximadamente 18 anos de estudo para a compreensão, dado incompatível com a realidade de nossa população, em que mais de 50 por cento tem menos de oito anos de estudos. Em relação à qualidade dos termos, estes eram bem elaborados tecnicamente, contendo a maior parte dos itens necessários. Ao correlacionarmos o ILFK com a qualidade dos TCLEs, pôde-se observar que a qualidade dos termos não apresentou correlação com a legibilidade (p= 0.884, coeficiente de correlação de Pearson 0.053). CONCLUSÃO: O grau de dificuldade dos TCLE é incompatível com a escolaridade de nossa população e nossos TCLE apresentavam informações suficientes. Esperávamos relacionar a quantidade de informações ao grau de dificuldade de compreensão do texto, não sendo confirmada, mostrando a possibilidade de um TCLE ser completo ao mesmo tempo fácil de ler.

BACKGROUND: The Consent Form (CF) is an important document that informs patients about benefits and risks of a study, it assures patients the right to accept or reject participation in a procedure related to their health. Some authors believe that Consent Forms are complex and difficult to read for most people. OBJECTIVE: Correlate the difficulty of understanding CF, through the Flesch Index (FI) and Flesch-Kincaid Index (FKI), used in our oncology outpatient clinic, with the profile of our patient's education. We also wanted to verify readability and presence of the information which must be part of these CF according to item IV.1 from Resolution 196/96 of the Brazilian Health Council. RESULTS: We obtained 10 CFs, according to FI and FKI the mean was 38.5 and 18.16 respectively, indicating that, at least, 18 years of study are needed for the comprehension. This result is incompatible with the Brazilian population where more than 50 percent have less than 8 years of study. According to the quality of the CF, they were well elaborated, and had most of the necessary contents. When the authors correlated FKI and quality of CF, they concluded that the quality of CF does not correlate with readability (p= 0.884, Pearson correlation coefficients 0.053). CONCLUSION: Despite the good content quality of most of the analyzed CF, their level of reading difficulty is not compatible with the literacy skills of a major part of the Brazilian population.

Importance of cancer among the Brazilian elderly population from 2000 to 2005 / A importância das neoplasias na população idosa brasileira de 2000 a 2005

Objective: To describe cancer hospital morbidity and mortality in the Brazilian elderly population according to the primary site of neoplasms per Brazilian region and their importance on Public Health System expenses. Methods: The data were obtained from the Ministry of Health records from 2000 to 2005. Results: From 2000 to 2005, there were 507,174 deaths due to neoplasms of the population older than 60 years old. The largest mortality rates were found in South and South-East regions. Among women, breast cancer was the most fatal neoplasm; among men, prostate cancer and trachea, bronchi and lung cancer. In situ neoplasms accounted for the highest average hospitalizations and the highest average expenses of the total amount paid for hospitalizations, while brain neoplasms accounted for the highest average amount spent per hospitalization. Conclusions: The elderly population corresponds to the majority of deaths due to neoplasms in the Brazilian population and for most of the hospitalizations expenses due to oncologic causes and subsequent expenses of the public health system.

Objetivo: Descrever a mortalidade e a morbidade hospitalar por câncer em idosos no Brasil de acordo com o sítio primário das neoplasias por regiões do Brasil e o valor gasto no Sistema Público de Saúde. Métodos: Os dados foram obtidos dos registros do Ministério da Saúde, no Sistema de Informação sobre Mortalidade (SIM) e Sistema de Informação Hospitalar (SIH) no período de 2000 a 2005. Resultados: Nos anos de 2000 a 2005 ocorreram 507.174 óbitos por neoplasias em pessoas com mais de 60 anos. As maiores taxas de mortalidade foram encontradas nas regiões Sul e Sudeste. Entre as mulheres, o câncer de mama foi a neoplasia que apresentou maior mortalidade e, entre os homens, foi o câncer de próstata e o de traqueia, brônquios e pulmão. As neoplasias in situ apresentaram a maior média de internações e a maior média anual do valor total pago em internações enquanto as neoplasias de encéfalo apresentaram o maior valor médio gasto em reais por internação. Conclusões: A população geriátrica corresponde à maior parcela dos óbitos por neoplasia na população brasileira e por grande parte dos gastos em internações por causa oncológica e consequentes gastos com o sistema de saúde público.