Expert review of anticancer therapy
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Expert Rev Anticancer Ther · Aug 2009
ReviewOsteonecrosis of the jaw and bisphosphonate use in breast cancer patients.
It is renowned that breast cancer patients suffer from a number of cancer-related skeletal events, while drugs recently added to the practitioners' quiver, such as aromatase inhibitors, intensify the need to preserve bone mass in this group of patients. Bisphosphonates are potent inhibitors of both normal and pathologic bone resorption. ⋯ The purpose of this review is to critically reflect the incidence, etiopathogenesis, prevention and treatment of osteonecrosis of the jaw. Succinct suggestions are provided to ensure clinicians prevent and detect the complications early.
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Trabectedin is a new marine-derived compound that binds the DNA minor groove and interacts with proteins of the DNA-repair machinery. Trabectedin has shown promising single-agent activity in pretreated patients with soft-tissue sarcoma (STS) and ovarian and breast cancer; combination with various other chemotherapeutic drugs is feasible. ⋯ Trabectedin obtained regulatory approval by the EMEA and in other countries for the treatment of STS patients after failure of all available standard-of-care chemotherapy. Current research focuses on the identification of predictive factors for patients treated with trabectedin as well as the development of other combinations.
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Expert Rev Anticancer Ther · May 2009
ReviewSomatostatin analog octreotide LAR in gastro-entero-pancreatic tumors.
Neuroendocrine tumors (NETs) are considered to be rare but, during the last two decades, their incidence and prevalence has considerably increased in gastro-entero-pancreatic (GEP) NETs. Most GEP-NETs express somatostatin receptors, which could be targets for treatment. The development of somatostatin analogs for treatment of functioning NETs was a revolution in the treatment of these patients and is still a cornerstone for managing hormone-related clinical symptoms. ⋯ The side effects are few and easily manageable. In the future, somatostatin analogs will continue to be a major treatment option for functioning NETs, but will be combined with other biologicals, such as a-interferons, mTOR inhibitors and VEGF inhibitors. A new multireceptor somatostatin analog, SOM230 (pasireotide), as well as chimeric molecules, such as dopastatin (a combination of a somatostatin analogue plus a dopamine agonist), will come into the clinical management of GEP-NETs.
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Desmoid tumor, also known as aggressive fibromatosis or desmoid-type fibromatosis, is a rare monoclonal, fibroblastic proliferation arising in musculoaponeurotic structures. Although histologically benign, desmoids are often locally invasive and associated with a high local recurrence rate after resection. Since it is a heterogeneous disease, in particular regarding clinical presentation, anatomic location and biological behavior, treatment should be individualized to reduce local tumor control failure with concurrently acceptable morbidity and preservation of quality of life. ⋯ Systemic treatment may be indicated in patients that have anatomic barriers to effective surgery or radiotherapy. Considering the significant morbidity of surgery and/or radiotherapy for certain locations, especially mutilation and loss of function, and the tumor's natural history, which is often characterized by prolonged periods of stability or even regression, a period of watchful waiting may compose the most appropriate management in selected asymptomatic patients. Attempts to complete eradication of the disease may be worse than the disease itself.
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Expert Rev Anticancer Ther · Mar 2009
ReviewTreatment of Barrett's esophagus with high-grade dysplasia.
The incidence of esophageal adenocarcinoma is increasing in the USA, now accounting for at least 4% of US cancer-related deaths. Barrett's esophagus is the main risk factor for the development of esophageal adenocarcinoma. The annual incidence of development of adenocarcinoma in Barrett's esophagus is approximately 0.5% per year, representing at least a 30-40-fold increase in risk from the general population. ⋯ The addition of laparoscopic esophagectomy adds a less invasive surgical resection to the treatment armanentarium. Esophagectomy will remain the gold-standard treatment of Barrett's esophagus with high-grade dysplasia until clinical research validates the role of endoscopic therapies. Current treatment strategies for Barrett's esophagus with high-grade dysplasia will be reviewed.