Current opinion in oncology
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To review recent developments in the molecular pathogenesis of tenosynovial giant cell tumor (TGCT) or pigmented villonodular synovitis (PVNS) and its therapeutic implications. ⋯ Currently, surgery remains the treatment of choice for patients with TGCT/PVNS. Localized TGCT/PVNS is managed by marginal excision. Recurrences occur in 8-20% of patients and are easily managed by re-excision. Diffuse TGCT/PVNS tends to recur more often (33-50%) and has a much more aggressive clinical course. Patients are often symptomatic and require multiple surgical procedures during their lifetime. For patients with unresectable disease or multiple recurrences, systemic therapy using CSF1R inhibitors may help delay or avoid surgical procedures and improve functional outcomes.
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Since 2003, fluorouracil/leucovorin plus oxaliplatin (FOLFOX) has been the standard of care in adjuvant therapy. This review reports the results of recent phase III trials which have attempted to improve upon the existing standard of care in adjuvant therapy. In addition, we examine how results of these trials have shaped our knowledge and outline directions for future research. ⋯ Negative results from multiple phase III trials suggest that the existing paradigm for the selection of agents to use in adjuvant trials is deeply flawed. Moving forward, we need to ensure mechanistic rationale for clinical trial design and reassess whether disease-free survival is the primary endpoint that should be used to evaluate biologic agents. Future research should be directed toward the development of prognostic and predictive markers for the development of a data-driven roadmap to inform risk stratification and therapeutic decision-making.
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This study aims to assess various types of nutritional intervention for improving treatment tolerance in patients with malnutrition related to the cancer anorexia-cachexia syndrome. ⋯ Supplementation with ω3 fatty acids appears to offer benefits that are verifiable at a biochemical, clinical and functional level. Related literature, however, provides conflicting results; therefore further studies will be required to confirm their efficacy. Supplementation with glutamine appears to support the efficacy of chemoradiotherapy treatment while reducing toxicity of the tissues and improving outcomes. Oral supplementation with branched amino acid appears to reduce the length of hospital stay, decrease morbidity and improve the quality of life, without any changes in mortality. Perioperative supplementation with arginine has shown a reduced incidence of complications and a significant increase in long-term survival.
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Human epidermal growth factor receptor 2 (HER2) amplification and overexpression play a central role in initiation, progression and metastasis of some common cancers, including breast and gastric cancer. About 20% of gastric and esophagogastric junction (EGJ) tumors overexpress HER2, providing a rationale to investigate trastuzumab, a monoclonal antibody directed against HER2, in this setting. This review focuses on the current role of HER2 inhibition as a new treatment option for gastric and EGJ cancer and discusses the optimization of gastric cancer-specific HER2 testing and analysis. ⋯ On the basis of the results of the ToGA trial, HER2 status should now be included in the diagnostic workup of patients presenting with advanced gastric and EGJ cancer. The addition of trastuzumab to chemotherapy is a new standard treatment for patients with locally advanced and irresectable, recurrent or metastatic HER2-positive disease.