Granulocyte colony-stimulating factors used in clinical practice: PoloNord Registry-Based Cohort Italian Study.

AIMS AND BACKGROUND: Granulocyte colony-stimulating factors are widely used to reduce myelotoxicity of chemotherapy and to allow its regular administration. National and international guidelines regulate their use. The aim of the study was to evaluate the use of pegfilgrastim and filgrastim/lenograstim in clinical practice, adherence to ASCO and ESMO guidelines, chemotherapy-related complications and adverse reactions. MATERIALS AND METHODS: Data from 645 consecutive patients and 3,150 chemotherapy administrations, receiving granulocyte colony-stimulating factors, as primary/secondary prophylaxis or therapeutic use, for the first time during a line of chemotherapy, were recorded from 08/2008 to 08/2011, in 10 Lombardy Italian cancer centers. Patients and chemotherapy administrations data were examined in a multiple logistic regression analysis model. RESULTS: Adherence to guidelines: primary prophylaxis, pegfilgrastim and filgrastim/ lenograstim 66%/47% (P = 0.002); secondary prophylaxis, 19.0%/26.8%; but 56.8%/ 53.6% including patients at high risk of febrile neutropenia with grade 3-4 neutropenia. Correct timing start (administration 24-72 h after chemotherapy): pegfilgrastim and filgrastim/lenograstim, 93.2%/61.5% (P <0.0001). CONCLUSIONS: Results suggest the more correct administration of pegfilgrastim as primary prophylaxis and timing start, compared to filgrastim/lenograstim. In secondary prophylaxis, the use of granulocyte colony-stimulating factors is extended beyond guideline recommendations to support patients at high risk of febrile neutropenia and to guarantee dose intensity. These outcomes suggest both the need of educational activities and the development of predictive tools to better define high risk patients and the use of granulocyte colony-stimulating factors.

Current treatments of neuroendocrine tumors role of biotherapy and chemotherapy.

Neuroendocrine tumors are rare neoplasms originating from cells belonging to a diffuse or confined neuroendocrine system and characterized by a significant histopatologic and biologic heterogeneity. Timely diagnosis is delayed because they are often clinically silent for their low differentiation grade and the absence of any symptom due to abnormal hormone release. For these reasons, many neuroendocrine tumor patients are not treated medically for metastatic or inoperable disease. Medical treatments include biotherapy, with interferon-alpha and somatostatin analogues, and chemotherapy. Somastostatin analogues are widely used in patients with symptoms and with carcinoids of low differentiation grade. Interferon-alpha is used alone or in combination with somatostatin analogues. Chemotherapy is active in patients with poorly differentiated neuroendocrine tumors. The therapeutic regimen commonly used is the combination of cisplatinum and etoposide. In conclusion, no standard treatment for NET has yet been identified, and the response criteria suggested by ITMO remain a reference point. The clinical aspect of the disease and biologic features suggest the identification of neuroendocrine tumors patients suitable for the appropriate therapies. On these bases, it is recommended that diagnosis and treatment of neuroendocrine tumors be carried out at specialized oncological centers involved in clinical trials.

Renal cancer treatment: a review of the literature.

Renal carcinoma represents about 3% of all adult tumors, with an estimate of 31,900 new cases diagnosed in 2003 in the United States. In the early phase of its natural history, renal cancer is potentially curable by surgery, but if the disease presents any signs of metastasis, the chances of survival are remote, even though anecdotal cases characterized by long survival have been reported. In fact, the treatment of metastatic renal cancer remains unsatisfactory. Systemic treatment with single agents and with polychemotherapy, with or without cytokine-based immunotherapy, has not been successful, obtaining very low response rates without a significant benefit in overall survival. This review highlights the most interesting issues regarding conventional therapeutic strategies, in localized and in advanced disease. New approaches such as monoclonal antibodies, vaccines, gene therapy, angiogenesis inhibitors and allogeneic cell transplantation and their possible clinical applications are also discussed.

Metastatic melanoma: chemotherapy.

The incidence of cutaneous melanoma has been rapidly increasing, with an estimate of 47,700 new cases diagnosed in 2000 in the United States. In the early phase of its natural history, melanoma is cured in most cases by surgery, but once the metastatic phase develops, it is almost always fatal. The treatment of metastatic melanoma remains unsatisfactory. Systemic therapy has not been successful up to now, with very low response rates to single-agent chemotherapy. Polychemotherapy has increased the response rate (RR), without a significant improvement in overall survival. Immunotherapy alone is able to induce only a few durable complete responses (CRs). New chemotherapeutic and biologic agents are now available and promising combined approaches targeting the tumor by several different mechanisms are desirable and will probably represent the future modality of treatment.