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Thymic malignancies: from clinical management to targeted therapies


, : Thymic malignancies: from clinical management to targeted therapies. Journal of Clinical Oncology 29(36): 4820-4827

A key challenge in the treatment of thymoma and thymic carcinoma (TC) is in improving our understanding of the molecular biology of these relatively rare tumors. In recent years, significant efforts have been made to dissect the molecular pathways involved in their carcinogenesis. Here we discuss the results of large-scale genomic analyses conducted to date and review the most active chemotherapies and targeted treatments. We reviewed the literature for chemotherapeutic trials in the last 2 years and trials involving targeted therapies between 1999 and 21. The search was supplemented by a review of abstracts presented at the annual meetings of the American Society of Clinical Oncology (from 1999 to 21), at the first International Conference on Thymic Malignancies in 29, and at a follow-up meeting of the newly formed International Thymic Malignancies Interest Group in 21. Surgery remains the treatment of choice for operable tumors, whereas chemotherapy is standard in locally advanced and metastatic disease. Thus far, targeted therapies have been developed empirically. Histone deacetylase inhibitors have shown some activity in thymoma whereas sunitinib may be active in TC. There are no data to support the use of HER2- or EGFR-targeted therapies in thymic malignancies. Drug development for the treatment of thymic malignancies is difficult because of the rarity of these tumors. Ethnic differences are becoming apparent, with aggressive subtypes being observed in Asians and African Americans. Incremental improvements in our understanding of tumor biology suggest that molecular profiling–directed therapies may be the preferred route of investigation in the future.

US$19.90

PMID: 22105817

DOI: 10.1200/JCO.2011.36.0487


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