Search

Background: There are conflicting data regarding the role of KRAS mutation on the risk of venous thromboembolism (VTE) in colorectal cancer (CRC) patients. Moreover, the role of other biomarkers such as NRAS or BRAF has not been studied. Purpose: To analyze the incidence of VTE in a cohort of patients with CRC based on KRAS, NRAS, and BRAF status. Methods: We performed a retrospective review of patients with unresectable locally advanced and metastatic CRC (mCRC) and known KRAS/NRAS/BRAF status, attended in the Medical Oncology Department of the Hospital General Universitario Gregorio Marañón (Madrid, Spain). The primary outcome was VTE defined as any venous thromboembolic event that occurred either 6 months before or at any time after the diagnosis of CRC. The biomarker status (KRAS, NRAS, and BRAF) and other predictors of thrombosis were collected. Results: One hundred and ninety-four patients were identified and included in the analysis. Forty-one patients (21.1%) experienced VTE. The incidence was 19.1% in RAS-mutated patients, 28.6% in BRAF-mutated patients and 21% in triple wild-type patients (p = NS). In multivariate analysis, ECOG ≥ 2 was the only independent predictor of VTE (OR 8.73; CI 95% 1.32–57.82; p = 0.025). Conclusions: In our study, biomarkers have not been associated with an increased risk of VTE in CRC patients. A high incidence of VTE in BRAF-mutated patients has been observed and should be explored in further studies. [ABSTRACT FROM AUTHOR]

Venous thromboembolism (VTE) is a common event in cancer patients and one of the major causes of cancer-associated mortality and a leading cause of morbidity. In recent years, the incidence rates of VTE have notably increased; however, VTE is still commonly underestimated by oncologists. VTE is considered an adverse prognostic factor in cancer patients in all settings. In 2011 the Spanish Society of Medical Oncology (SEOM) first published a clinical guideline of prophylaxis and treatment of VTE in cancer patients. In an effort to incorporate evidence obtained since the original publication, SEOM presents an update of the guideline for thrombosis and cancer in order to improve the prevention and management of VTE. [ABSTRACT FROM AUTHOR]

Purpose: To evaluate the incidence of venous thromboembolism (VTE) in ambulatory pancreas cancer patients receiving chemotherapy and analyze Khorana's predictive model of chemotherapy-associated thrombosis. Methods/patients: We performed a retrospective review to determine the incidence of VTE in the gastrointestinal cancer unit of our center. Between 2008 and 2011, 84 consecutives patients diagnosed with pancreas adenocarcinoma were identified and included in the analysis. Pancreatic neuroendocrine tumors were excluded. Results: Thirty patients experienced VTE (35.7 %) and 66 % of the events were diagnosed during the first 6 months after diagnosis. Khorana's score: 33.3 % of the intermediate category patients developed a venous thromboembolic event and 37.5 % in the high-risk category. Conclusions: The high incidence of VTE observed in this study is consistent with prior reports. Specific predictive model for chemotherapy-associated thrombosis in pancreatic cancer must be investigated. [ABSTRACT FROM AUTHOR]