Targeted molecular therapies comprise the newest frontier of oncology research. [1][2][3] Recent investigations have concentrated on the development of novel treatments designed to interrupt cellular pathways crucial to oncogenesis and, in fact, these medications represent a large proportion of drugs undergoing evaluation in current and new clinical trials.2 Identification of the intracellular signals responsible for conferring malignant potential on tumor cells enables therapeutic discrimination between malignant and healthy cells. 1,2 The expectation is that targeted therapies, in contrast to traditional chemotherapeutic agents, will provide enhanced patient outcomes and improved efficacy in the setting of superior, or at least complementary, toxicity profiles. 3 Furthermore, targeted drugs provide alternative approaches to disruption of carcinogenesis, which may prove to be synergistic with conventional cancer therapies. While the advent of innovative treatment modalities for cancers has improved the landscape for affected patients, the overall response to therapy thus far has been modest.
Epidermal Growth Factor ReceptorNon-malignant cells develop in a regulated fashion using a series of This response compared favorably with the data for the single-agent Gynecologic Cancer be treated successfully and with equal efficacy using either radical surgery or radiation. 20 However, approximately 25% of women have advanced disease at diagnosis, and the overall survival for these patients is low, even with multimodality therapies. 9 Furthermore, despite improvements in treatment, up to 35% of women will eventually develop persistent, recurrent, or metastatic cervical cancers, which will respond only briefly to platinum-based chemotherapy.
8,17Historically, radiation was the mainstay of treatment for locally advanced cervical cancer. 21 In 1999, five large clinical trials from the Gynecologic Oncology Group (GOG), Southwest Oncology Group (SOG), and Radiation Therapy Oncology Group (RTOG), encompassing more than 1,800 patients, published remarkably consistent data that changed the landscape of treatment of cervical cancer. 11,16,22,23 These trials each demonstrated a reduction in relative risk of death of 30-50% with the addition of concurrent cisplatin chemotherapy as a radiosensitizer.
11,16These data led the NCI to endorse platinum-based chemotherapy for the treatment of locally advanced cervical cancer. Since then, single-agent cisplatin with radiation has been the mainstay of treatment, and it continues to be the most active chemotherapeutic agent in cervical cancer. 17,21,23 More recently, the GOG has conducted several trials aimed at the identification of other single or multi-agent radiosensitizer regimens that demonstrate improved response and overall survival rates while maintaining satisfactory quality of life. 11,16,22 Recurrent cervical cancer usually cannot be cured, particularly when surgical resection is not feasible and radiation salvage is not possible secondary to previous treatment, or when patie...