Gene Therapy for Head and Neck Cancers
March 1st 2001Despite advances in surgery, radiotherapy, and chemotherapy, survival of patients with squamous cell carcinoma of the head and neck has not significantly improved over the past 30 years. Locally recurrent or refractory disease is particularly difficult to treat. Repeat surgical resection and/or radiotherapy are often not possible, and long-term results for salvage chemotherapy are poor. Recent advances in gene therapy have been applied to recurrent squamous cell carcinoma of the head and neck. Many of these techniques are now in clinical trials and have shown some efficacy. This article discusses the techniques employed in gene therapy and summarizes the ongoing protocols that are currently being evaluated in clinical trials. [ONCOLOGY 15(3):303-314, 2001]
Imaging Prostate Cancer: Current and Future Applications
March 1st 2001Various treatment options are available for adenocarcinoma of the prostate-the most common malignant neoplasm among men in the United States. To select an optimum management strategy, we must be able to identify an organ-confined disease (in which local therapy such as surgery or radiation may be beneficial) vs prostate cancer beyond the confines of the gland (for which other treatment approaches may be more appropriate). At present, no standard imaging modality can by itself reliably diagnose and/or stage adenocarcinoma of the prostate. Standard transrectal ultrasound, magnetic resonance imaging (MRI), computed tomography, bone scans, and plain x-ray are not sufficiently reliable when used alone. Fortunately, advances in imaging technology have led to the development of several promising modalities. These modalities include color and power Doppler ultrasonography, ultrasound contrast agents, intermittent and harmonic ultrasound imaging, MR contrast imaging, MRI with fat suppression, MRI spectroscopy, three-dimensional MRI spectroscopy, elastography, and radioimmunoscintigraphy. These newer imaging techniques appear to improve the yield of prostate cancer detection and staging, but are limited in availability and thus require further validation. This article reviews the status of current imaging modalities for prostate cancer and identifies emerging imaging technologies that may improve the diagnosis and staging of this disease. [ONCOLOGY 15(3):325-342, 2001]
Systemic Therapy for Older Women With Breast Cancer
March 1st 2001Breast cancer is a common problem in older women. As the number of medical illnesses increases with age and the life expectancy decreases, the benefits of systemic therapy for women with breast cancer become questionable. All women over age 65 years are at high enough risk of breast cancer to consider the risk/benefit ratio of preventive therapy with tamoxifen (Nolvadex) or participation in the Study of Tamoxifen and Raloxifene (STAR) trial. Adjuvant chemotherapy and hormonal therapies for early breast cancer significantly improve disease-free and overall survival; recommendations for their use are based on risk of tumor recurrence. Use of tamoxifen in the adjuvant setting in women with receptor-positive tumors is a relatively simple decision in light of its favorable toxicity profile. The delivery of adjuvant chemotherapy is a more complicated decision, and the patient’s wishes, estimated life expectancy, presence of comorbid conditions, and estimated benefit from treatment should be considered. The primary goal of the treatment of metastatic breast cancer is palliation. We discuss trials specific to older women and make appropriate treatment recommendations. Unfortunately, there is a paucity of data from clinical trials in women over age 70 years. However, because the clinical trial is the primary scientific mechanism for testing the efficacy of a treatment, every effort should be made to enter older women into treatment protocols. [ONCOLOGY 15(3):280-299, 2001]
Empiric Antifungal Therapy for the Neutropenic Patient
March 1st 2001One of the major challenges facing oncologists today is invasive fungal infection. Difficult to diagnose and deadly when missed, invasive fungal infection-primarily by Candida and Aspergillus organisms-is the major infectious cause of death associated with chemotherapy-induced myelosuppression. In this review, the problem will be described and evidence-based approaches to management, including assessment for risk factors and empiric antifungal therapy, will be discussed. Finally, the future of diagnostic and therapeutic strategies for protecting the immunocompromised patient will be considered. [ONCOLOGY 15(3):351-369, 2001]
High-dose therapy (HDT) with peripheral blood stem cell transplantation is a treatment option for patients with advanced follicular, marginal, and mantle cell lymphoma. In this setting, frequent contamination of peripheral blood stem cell harvests by
Tositumomab/iodine-131 tositumomab (Bexxar) is a radioimmunotherapeutic agent in development for patients with low-grade or transformed non-Hodgkin’s lymphoma (NHL). This analysis focuses
Brachytherapy for Carcinoma of the Lung
March 1st 2001An estimated 157,000 patients died of lung cancer in the United States in the year 2000.[1] Although surgery can be curative, only about 20% of patients are amenable to complete surgical resection. Most of the other patients are treated with radiation
Relapsed or refractory low-grade non-Hodgkin’s lymphoma (NHL) and transformed low-grade NHL are incurable diseases. Tositumomab/iodine-131 tositumomab (Bexxar) is a novel
Rituximab Is Active in Lymphocyte-Predominant Hodgkin’s Disease
March 1st 2001We designed a phase II trial to determine the efficacy of the chimeric anti-CD20 monoclonal antibody rituximab (Rituxan) in lymphocyte-predominant Hodgkin’s disease (LPHD). A unique subtype of Hodgkin’s disease that expresses the CD20
Ibritumomab Tiuxetan Radioimmunotherapy of Rituximab-Refractory Follicular Non-Hodgkin’s Lymphoma
March 1st 2001Ibritumomab tiuxetan (Zevalin) is an anti-CD20 murine IgG1 kappa monoclonal antibody covalently bound to tiuxetan, which forms a strong chelate with the pure beta-emitting isotope yttrium-90. We conducted an open-label trial of