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Current Challenges of Gene Therapy for Prostate CancerGene therapy for prostate cancer faces hurdles similar to those being encountered for other cancers and nonmalignant processes. The greatest obstacle is the identification of efficient delivery systems, since numerous animal models and cell culture systems have shown potential efficacy when most cells express the introduced genetic material. Early prostate cancers are easily accessible to gene vector introduction, and the predictable metastatic patterns of this cancer may offer additional advantages for gene therapy. This article reviews gene vectors and gene products, as well as ongoing trials of gene therapy that have recently begun in prostate cancer. [ONCOLOGY 11(6):845-856, 1997]
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IntroductionAs we review the past decade, one of the most valuable contributions to cancer care has been the success of a number of agents that block angiogenesis.
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Extraovarian Primary Peritoneal CarcinomaExtraovarian primary peritoneal carcinoma (EOPPC), a relatively newly defined disease that develops only in women, accounts for approximately 10% of cases with a presumed diagnosis of ovarian cancer. Characterized by
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Primary CNS Lymphoma: The Role of ResectionIs PCNSL resection safe? Evidence from clinical trials in which enrollment follows surgery-such as G-PCNSL-SG-1-is not valid proof of the safety of resection.
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An Extended Time Frame for VTE Risk in Bladder CancerCancer promotes the development of venous thromboembolism (VTE) by inducing a hypercoaguable state, through mechanisms that are complex and multifactorial.
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Current Status of Vinorelbine For Breast CancerVinorelbine tartrate (Navelbine) is a new semisynthetic vinca alkaloid with efficacy against a variety of solid tumors, including non-small-cell lung cancer, breast cancer, head and neck cancer, and Hodgkin's lymphoma.
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Irinotecan/Cisplatin Followed by 5-FU/ Paclitaxel/Radiotherapy and Surgery in Esophageal CancerLocal-regional carcinoma of the esophagus is often diagnosed inadvanced stages because the diagnosis is established when symptomsare severe. The prognosis of patients with local-regional carcinoma ofthe esophagus continues to be grim. While preoperative chemoradiotherapyincreases the fraction of patients who achieve pathologiccomplete response, that percentage is approximately 25%. In an attemptto increase the number of patients with either no cancer in the surgicalspecimen or only microscopic cancer, we adopted a three-step strategy.The current study utilized up to two 6-week cycles of induction chemotherapywith irinotecan (CPT-11, Camptosar) and cisplatin as step 1.This was followed by concurrent radiotherapy and chemotherapy withcontinuous infusion fluorouracil (5-FU) and paclitaxel as step 2. Oncethe patients recovered from chemoradiotherapy, a preoperative evaluationwas performed and surgery was attempted. All patients signed aninformed consent prior to their participation on the study. A total of 43patients were enrolled. The baseline endoscopic ultrasonography revealedthat 36 patients had a T3 tumor, five patients had a T2 tumor, andtwo had a T1 tumor. Twenty-seven patients had node-positive cancer(N1). Thirty-nine (91%) of the 43 patients underwent surgery; all hadan R0 (curative) resection. A pathologic complete response was noted in12 of the 39 patients. In addition, 17 patients had only microscopic(< 10%) viable cancer in the specimen. Therefore, a significant pathologicresponse was seen in 29 (74%) of 39 taken to surgery or 29 (67%)of all 43 patients enrolled on the study. With a median follow up beyond25 months, 20 patients remain alive and 12 patients remain free ofcancer. Our preliminary data suggest that the proportion of patientswith significant pathologic response can be increased by using thethree-step strategy.
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Discussing Disease Progression and End-of-Life DecisionsBecause most patients now want to know the truth about their diagnosis and prognosis, the ability to discuss the cancer diagnosis, disease recurrence, or treatment failure, and to solicit patients’ views about resuscitation
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Commentary (Baraboutis/Noskin): Management of Health-Care–Associated Infections in the Oncology PatientDrs. Guinan, McGuckin, andNowell have nicely reviewedthe risk factors associatedwith increased susceptibility to hospital-acquired infection in oncologypatients and also discussed preventivesteps to attenuate those risks.We agree that patients with malignanciespresent a challenge to thehealth-care provider, as infection willdevelop at some point in almost allcancer patients[1] and may be associatedwith significant mortality.[2]
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Superficial Bladder Cancer: Decreasing the Risk of RecurrenceDr. Grossman's article provides a well-organized review of the literature on the treatment of superficial bladder cancer. At the time of diagnosis, approximately 80% of patients with bladder cancer have superficial tumors (limited to the urothelial lining of the bladder or the underlying lamina propria). In such patients, the risk of distant disease is low, and the natural history of bladder cancer is based on two separate, but related processes: tumor recurrence and progression to a higher stage of disease.
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Understanding the Benefits of Acupuncture Treatment for Cancer Pain ManagementThis article reviews how acupuncture is thought to work, data on acupuncture for managing pain caused by cancer or by cancer treatment, how acupuncture is practiced in the US medical system, discussion of safety issues, and practical tips on how to integrate acupuncture into cancer care.
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Clinical Hypnosis for the Palliative Care of Cancer PatientsClinical hypnosis has been defined as a mind-body therapy that involves a deeply relaxed state, individualized mental imagery, and therapeutic suggestion.
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Gemcitabine, Paclitaxel, and Trastuzumab in Metastatic Breast CancerA phase II trial evaluated the effectiveness and toxicity of combination paclitaxel (Taxol), gemcitabine (Gemzar), and trastuzumab (Herceptin) as first-line therapy for patients with newly diagnosed HER2-overexpressing
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Neoadjuvant Androgen Deprivation Before Prostatectomy in T1-T3 PatientsAndrogen deprivation has been used prior to radical prostatectomy in an attempt to improve local control of prostate cancer and delay time to cancer progression. Thirty men (mean age of 65) with clinical stage T3 adenocarcinoma of the prostate were entered into a phase II trial at the University of California, San Francisco, examining the effects of neoadjuvant androgen deprivation (luteinizing hormone-releasing agonist and an antiandrogen) before radical prostatectomy. Twenty-six of these patients subsequently underwent radical prostatectomy. Despite impressive physiological changes in prostate and tumor volume, stage reduction was noted in only 4 patients (15%). Overall, with a mean follow-up of 32.7 months, 72% of patients had evidence of disease recurrence, including detectable PSA. Several series suggest that in patients with stage T1 and T2 disease, the likelihood of a positive surgical margin after radical prostatectomy is decreased substantially by neoadjuvant deprivation. The effect on long-term disease-free survival, however, is still unknown. [Oncol News Int 6(Suppl 3):16-17, 1997
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The Road to Romiplostim Approval and BeyondRomiplostim (Nplate) was the first thrombopoietin (TPO) receptor agonist to receive regulatory approval by the US Food and Drug Administration (FDA) for treatment of thrombocytopenia in patients with chronic immune (idiopathic) thrombocytopenic purpura (ITP) who have had an insufficient response to corticosteroids, immunoglobulins, or splenectomy.
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Strategies for Identification and Clinical Evaluation of Promising Chemopreventive AgentsStrategies for chemopreventative drug development are based on the use of well-characterized agents, intermediate biomarkers correlating to cancer incidence, and suitable cohorts for efficacy studies. Since
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ACR Appropriateness Criteria® Ductal Carcinoma in SituManagement of ductal carcinoma in situ (DCIS) commonly involves excision, radiotherapy, and hormonal therapy. Radiotherapy is employed for local control in breast conservation. Evidence is evolving for several radiotherapy techniques exist beyond standard whole-breast irradiation.
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Management of Early-Stage Lung Cancer: Past, Present, and Future Adjuvant TrialsThe standard of care with regard to adjuvant chemotherapy of lung cancer has changed remarkably over the past 3 years. Until the initial report of the International Adjuvant Lung Trial in 2003, there was no real evidence from any individual randomized clinical trial (RCT) that adjuvant chemotherapy improves survival in resectable non-small-cell lung cancer. However, five RCTs that have now been reported indicate that adjuvant chemotherapy is effective, at least in certain subgroups of resectable patients. Moreover, numerous meta-analyses have also reported a positive effect from adjuvant treatment. Nonetheless, because of methodologic issues and conflicting results, the question of who should be treated and what constitutes optimal adjuvant therapy remains controversial. This article reviews the recent randomized trials that have contributed to a change in the state of the art, as well as some of the methodologic problems that may have confounded their proper interpretation. It also considers newer approaches to adjuvant therapy, with a particular focus on strategies that incorporate our growing knowledge of molecular medicine and predictive factors to the field of adjuvant chemotherapy of lung cancer.
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Adjuvant vs Neoadjuvant Chemotherapy in Resectable NSCLC: Is That the Real Question?Besse and Le Chevalier provide us with an excellent and comprehensive review of available literature summarizing the current state of the art relating to both adjuvant and neoadjuvant (or induction) chemotherapy in resectable non–small-cell lung cancer (NSCLC).[1] They review the efficacy of adjuvant and neoadjuvant treatment in randomized clinical trials (RCTs) that employ cisplatin-based chemotherapy in stages I, II, and IIIA NSCLC, as well as meta-analyses of these RCTs.
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Management of Patients With Muscle-Invasive and Metastatic Bladder CancerBladder cancer is the fifth most common cancer diagnosed in theUnited States. Prognosis for this disease is dependent on both tumorstage and grade. Radical cystectomy has been the standard treatmentfor muscle-invasive local disease; however, combined-modality approacheswith the use of chemotherapy are gaining momentum withdata suggesting survival improvement. Patients with metastatic diseasehave poor long-term survival rates despite systemic multiagent chemotherapy.A variety of agents, including newer cytotoxic drugs and biologicallytargeted agents, are under investigation to determine the mosteffective regimen. The special needs of specific patient populations,such as the elderly, those with a suboptimal performance status, andpatients with medical comorbidities have gained more attention.Progress in the treatment of this disease is dependent on supportingongoing and future clinical trials.
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Role of Positron-Emission Tomography Scan in the Diagnosis and Management of Breast CancerIn 2008, more than 184,000 new patients were diagnosed with breast cancer, the most commonly diagnosed malignancy in women in the United States. Despite great advances over the past few years in screening, detection, and treatment, more than 40,000 women died from the disease in 2008.[1] Early breast cancer is considered a curable disease, but the curative potential of patients with locally advanced or metastatic disease is limited.
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Hodgkin's DiseaseAlthough there have been many advances in the treatment of Hodgkin's disease, diagnosis of the disease still rests on the identification of the Reed-Sternberg cell. This distinctive, though nonspecific, cell was first described by Sternberg in 1898 and further elucidated by Reed in 1902. In most biopsies, the Reed-Sternberg cell accounts for only 1% of the cells present, with the remainder consisting of lymphocytes, granulocytes, histiocytes, plasma cells, and fibroblasts
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Commentary(McDermott/Hudes)-Testicular Cancer: Maintaining the High Cure RateDr. Raghavan is to be commendedfor a concise andcomprehensive overview ofthe management of germ cell tumors.As he suggests, given the demographicsof this relatively uncommon diseaseand the high cure rate that canbe achieved with proper treatmentand follow-up, it behooves us to maintainthese excellent results, even whilestriving to reduce the toxicity of treatment.We will highlight a few additionalpoints to complement thissuperb review.
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GingerGinger, the rhizome of Zingiber officinale Roscoe, is best known for its role as a flavoring agent for food in Asian and Indian recipes.
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Beyond Futility: Good Shared End-of-Life Decision-Making Takes Ongoing Discussions, Realistic GoalsDecision-making at the end of life is difficult, and it should be. Rather than face these time consuming and emotionally demanding discussions, doctors too often look to unsuitable conceptual models.
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Long-Term Effects of Chemo on the Cognitive Function of Cancer PatientsIn this podcast we discuss the long-term effects of chemotherapy on the cognitive function of cancer patients and the current status of research in this field.
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Chemoradiation for Locally Advanced, Unresectable NSCLCThe optimal therapy for locally advanced, unresectable, stage III non–small-cell lung cancer (NSCLC) continues to evolve. The critical determinants of overall survival include local tumor control and the
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ACR Appropriateness Criteria® Postradical Prostatectomy Irradiation in Prostate CancerThe purpose of this article is to present an updated set of American College of Radiology consensus guidelines formed from an expert panel on the appropriate use of radiation therapy in postprostatectomy prostate cancer.
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Canadians Wait Longer for Radiotherapy Than US PatientsSAN FRANCISCO--Delays for radiation treatment are longer in Ontario than in the United States, Canadian researchers reported in a poster presentation at the annual meeting of the American Society of Therapeutic Radiology and Oncology (ASTRO).
