Clinical Oncology

[Cardiovascular Side Effects of Anti-Cancer Therapies]

LANDHERR László1, NAGY András Csaba2, NAGYKÁLNAI Tamás3

DECEMBER 05, 2014

Clinical Oncology - 2014;1(04)

AFFILIATIONS

  1. Uzsoki utcai Kórház, Budapest, Onkoradiológiai Központ
  2. Uzsoki utcai Kórház, Budapest, I. Belgyógyászat-Kardiológia
  3. Budapest, XV. ker. Szakrendelő, Onkológia, Budapest

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[Bone is the most common site of metastatic disease in many solid tumours, mainly in breast, prostate and lung cancer. Patients with bone metastases are at risk for skeletal-related events such as bone pain, pathological fractures requiring surgery and/or radiation to bone lesions, hypercalcemia, and spinal cord compression. Skeletal-related events are major source of morbidity for cancer patients and may be associated with negative impact on quality of life and survival. Bisphosphonates inhibit osteoclast function and are widely used in the treatment of malignant bone disease, as preventive therapy against skeletal-related events. Recently, the NF-κappa B-ligand (RANKL)-mediated osteoclast activity and this pathway in bone metabolism became a prime target for the treatment of bone metastases. The fi rst drug targeting the RANK-RANKL pathway is denosumab, a fully monoclonal human antibody which binds to RANKL and inhibits osteoclast activity. Nowadays optimal treatment of bone metastases requires multidisciplinary management of patients including the administration of bone-modifying agents such bisphosphonates or denosumab. The use of bone-targeted agents is a valuable additional treatment in the fi ght against bone metastases and multiple, randomised trials have demonstrated the effectivity of these drugs in reducing skeletal morbidity caused by advanced cancer.]

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[Our immune system fi ghts effectively against infections, but the same activity exists against invading cancer cells, as well. However, malignant tumors are able to escape from these mechanisms; therefore tumor cells become unrecognizable for the immune system. Immuno-oncology is a novel and innovative discipline, focusing on a long-term purpose: to enhance the immune-response against malignancies. The main goal is to stimulate the immune system to properly recognize and destroy malignant tumor cells. This approach is comprehensive, includes the initiation of antitumor immune-response and enhancing its controlling mechanisms, moreover, provides active, anti-tumor effector cells. Recent results of anticancer research highlighted a new era of oncology, which is based on targeted, personalized medicine over cytotoxic therapies, and mainly focusing on the rapidly evolving discipline of immuno-oncology.]

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[Bone metastases (BMs) are common in patients with renal cell carcinoma (RCC) and approximately in 30% of patients with metastatic RCC (mRCC) will develop. Inhibition of vascular endothelial growth factor (VEGF) has been pursued as a therapeutic target in the treatment of metastatic clear cell RCC (mRCC). Tyrosine kinase inhibitors (TKIs), such as sunitinib, pazopanib, sorafenib, and axitinib, became the therapy of choice for patients with mRCC. Apart from the undisputed effi cacy of TKI in treatment of mRCC, the problem of metastatic bone disease still remains. There is evidence that the presence of BMs in m-RCC patients has a signifi cant and clinically-relevant negative impact on survival and potentially on the outcome of VEGF-targeted therapy. Also, common practice in the treatment of such patients is bonedirected therapy with BPs. Recent evidence shows a potentially synergistic effect on effi cacy but also a potential impact on increased toxicity of combining TKIs and BPs. This review highlights the importance of this subject and aims to facilitate further research and optimize the treatment of this important and common group of RCC patients.]

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[Current clinical practice for breast cancer originates in “evidence based medicine”. In this, each tumor receives a therapy optimal for a given patient population - which might not be optimal for each individual patient. Multigenic tests determining expression of a set of genes can provide additional support in this decision process. Two such tests (MammaPrint and Prosigna) have already received FDA clearance. A number of additional test are commercially available (IHC4, Oncotype DX, EndoPredict, BCI). A common property of these assays is their utility in estrogen receptor positive early breast cancer. The main clinical problem answered by them is the necessity of adjuvant chemotherapy. To date, no reliable algorithm has been identifi ed capable to pinpoint the most effective chemotherapy combination for a given patient. Furthermore, there is no trustworthy test for triple negative breast cancer. The assays utilize different technologies (immunohistochemistry, gene chips, RT-PCR) and a discrepant list of genes - these result in discordance of the predictions for the individual patient. Despite these shortcomings, multigenic tests quickly gained foothold in breast cancer therapy decision process. Their utility is supported by the cost reduction for the health care providers by lowering the number of patients eligible for chemotherapy.]

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