RESUMO
Abstract: The stimulation of the immune system, in order to generate an attack against cancer cells, similarly to that which occurs in infectious disease, has long been matter of interest in oncology; however, only limited success has been achieved, with different treatment strategies tested in recent years. The development of new immune checkpoint inhibitors is currently changing this scenario, and immunotherapy is becoming a real choice among traditional cytotoxic treatments to fight cancer. Recent reports have shown efficacy and safety with the use of pembrolizumab, nivolumab, and ipilimumab for the treatment of different neoplasms, especially melanoma. In this article, we propose a review of the mechanisms of action involved in cancer immunology, the response evaluation of immunotherapies, and its toxicity profile, as well as a summary of the main clinical trials that led to the adoption of these new drugs for melanoma treatment.
Assuntos
Humanos , Antineoplásicos Imunológicos/uso terapêutico , Imunoterapia/métodos , Melanoma/imunologia , Melanoma/tratamento farmacológico , Neoplasias/imunologia , Neoplasias/tratamento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica , Resultado do Tratamento , Anticorpos Monoclonais Humanizados/uso terapêutico , Antígeno CTLA-4/antagonistas & inibidores , Receptor de Morte Celular Programada 1/antagonistas & inibidores , Ipilimumab/uso terapêutico , Anticorpos Monoclonais/uso terapêuticoRESUMO
Purpose To assess the activity, safety and treatment patterns of sunitinib in patients with poor-risk metastatic renal cell carcinoma (mRCC). Materials and Methods We retrospectively reviewed the charts of poor risk patients treated with sunitinib from October 2006 to July 2013 who met the eligibility criteria. The primary endpoint was overall survival (OS). Tumor radiological response was measured according to RECIST 1.1 and adverse events (AEs) were assessed through standard criteria. Results Median OS was 8.16 months (95% CI, 5.73-10.59). Of the 53 patients included in this analysis, 9 (17.0%) achieved partial response, 12 (22.6%) had stable disease. Median treatment duration was 3.30 months (95% CI: 1.96-4.63) and 26.4% of patients discontinued treatment due to toxicity. Grade 3 or higher AEs occurred in 39.6% of patients, the most common being fatigue (15.1%), neutropenia (9.5%), nausea, vomiting and diarrhea (7.5% each). Discussion Sunitinib may benefit some unselected poor-risk patients, although the rates of AEs and drug discontinuation suggest a need for careful patient monitoring. .