Commentary (Arora/Freifeld): Infectious Complications of Lung Cancer
February 1st 2005The article by Dr. Seo providesa comprehensive review of theepidemiology, presentation, andtreatment of infection in lung cancerpatients. Infection is a significant causeof morbidity and mortality in cancerpatients, as a consequence of immunologicabnormalities that result from thecancer itself as well as from cytotoxiccancer therapies. Granulocytopenia andlymphocyte dysfunction commonlyoccur following intensive therapy formany solid tumors such as lung cancer,and these cellular deficiencies particularlypredispose patients to certain infections.Respiratory infections arecommon during the course of lung cancer,often as a result of direct effects onthe lung including radiation therapy andtumor burden causing obstruction, especiallywith bronchogenic carcinomasor carcinoid tumors. Postsurgical infections,following biopsy or thoracotomyfor resection, are also common.Infectious complications are problematicfor both patient and oncologistsbecause they may delay treatment andimpair quality of life.
Kepivance Approved for Oral Mucositis in Hematologic Ca
January 1st 2005ROCKVILLE, Maryland-The Food and Drug Administration (FDA) has approved Amgen’s Kepivance (pal-ifermin) for use in decreasing the incidence and duration of severe oral mucositis in hematologic cancer patients undergoing high-dose chemotherapy, with or without radiation, followed by bone marrow transplantation. The drug’s labeling recommends its intravenous administration for 6 days, 3 days before and 3 days after myelotoxic therapy.
Small-cell lung cancer,mesothelioma, and thymoma
January 1st 2005As discussed in chapter 6, there are two major subdivisions of lung cancer:small-cell lung cancer (SCLC), for which chemotherapy is the primary treatment,and non-small-cell lung cancer (NSCLC). SCLC is decreasing in frequencyin the United States, with recent data showing it represents only 14%of lung cancers. This chapter provides information on the staging and prognosis,pathology and pathophysiology, treatment, and follow-up of longtermsurvivors of SCLC and concludes with brief discussions on mesotheliomaand thymoma.
Integrating Hormonal Therapy With External-Beam Radiation and Brachytherapy for Prostate Cancer
January 1st 2005The use of hormonal therapy with external-beam radiation (EBRT)to treat prostate cancer is a topic that has been well explored. The potentialuse of hormonal therapy and brachytherapy in the treatment ofprostate cancer, however, continues to be controversial. This review isbased on our current interpretation of the available literature assessingthe outcomes of patients treated with EBRT and brachytherapy withor without hormonal therapy. Extrapolating from the findings of theRadiation Therapy Oncology Group (RTOG) 9413 trial, there appearsto be a favorable interaction between hormonal therapy and irradiationin the lymph nodes. The benefits demonstrated with whole-pelvicEBRT and hormonal therapy are likely to extend to patients treatedwith brachytherapy as well. Studies suggest that the role of hormonaltherapy in brachytherapy is limited without the application of wholepelvicEBRT due to the inability of brachytherapy to address potentiallymph nodes at risk. The potential role of hormonal therapy in conjunctionwith brachytherapy without pelvic radiotherapy, is limited byinconclusive data and abbreviated follow-up times.
Principles of radiation therapy
January 1st 2005This chapter provides a brief overview of the principles of radiation therapy.The topics to be discussed include the physical aspects of how radiation works(ionization, radiation interactions) and how it is delivered (treatment machines,treatment planning, and brachytherapy). Recent relevant techniques of radiationoncology, such as conformal and stereotactic radiation therapy, also willbe presented. These topics are not covered in great technical detail, and noattempt is made to discuss the radiobiological effects of radiation therapy. It ishoped that a basic understanding of radiation treatment will benefit those practicingin other disciplines of cancer management. This chapter does not addressprinciples of radiobiology, which guide radiation oncologists in determiningissues of treatment time, dose, and fractionation or in combining radiationwith sensitizers, protectors, and chemotherapy or hormones.
Commentary (Loblaw): Early Detection and Treatment of Spinal Cord Compression
January 1st 2005In this issue of ONCOLOGY, Dr.Ruckdeschel addresses a subjectthat, fortunately, is not very common,but unfortunately for those inwhom the problem occurs, the outcomesare almost universally poor.The subject is probably one of themost dreaded complications of advancedcancer-malignant spinalcord compression. On a positive note,since Dr. Patchell's plenary sessionpresentation at the 2003 AmericanSociety of Clinical Oncology Annualmeeting,[1] interest in metastatic spinalcord compression has been renewedand there is hope that futurepatients with this problem will farebetter.
Cisplatin, Fluorouracil, Celecoxib, and RT in Resectable Esophageal Cancer: Preliminary Results
Esophageal cancer frequently expresses cyclooxygenase-2 (COX-2)enzyme. In preclinical studies, COX-2 inhibition results in decreasedcell proliferation and potentiation of chemotherapy and radiation. Wereport preliminary results of a phase II study conducted by the HoosierOncology Group in patients with potentially resectable esophageal cancer.All patients received cisplatin at 75 mg/m2 given on days 1 and 29and fluorouracil (5-FU) at 1,000 mg/m2 on days 1 to 4 and 29 to 32with radiation (50.4 Gy beginning on day 1). Celecoxib (Celebrex) wasadministered at 200 mg orally twice daily beginning on day 1 untilsurgery and then at 400 mg orally twice daily until disease progressionor unexpected toxicities, or for a maximum of 5 years. Esophagectomywas performed 4 to 6 weeks after completion of chemoradiation. Theprimary study end point was pathologic complete response (pCR). Secondaryend points included response rate, toxicity, overall survival, andcorrelation between COX-2 expression and pCR. Thirty-one patientswere enrolled from March 2001 to July 2002. Respective grade 3/4 toxicitieswere experienced by 58%/19% of patients, and consisted of granulocytopenia(16%), nausea/vomiting (16%), esophagitis (10%), dehydration(10%), stomatitis (6%), and diarrhea (3%). Seven patients (24%)required initiation of enteral feedings. There have been seven deathsso far, resulting from postoperative complications (2), pulmonary embolism(1), pneumonia (1), and progressive disease (3). Of the 22 patients(71%) who underwent surgery, 5 had pCR (22%). We concludethat the addition of celecoxib to chemoradiation is well tolerated. ThepCR rate of 22% in this study is similar to that reported with the use ofpreoperative chemoradiation in other trials. Further follow-up is necessaryto assess the impact of maintenance therapy with celecoxib onoverall survival.
Study Supports Response-Adjusted RT for Pediatric HD
December 1st 2004ATLANTA, Georgia-Children with low-risk Hodgkin’s disease (HD) who have a complete remission after chemotherapy can forego radiation therapy without an increased risk of recurrence, according to a trial presented at the 46th Annual Meeting of the American Society for Therapeutic Radiology and Oncology (abstract 3).
Commentary (Tepper/Kim): Are We Overtreating Some Patients With Rectal Cancer?
December 1st 2004Adjuvant therapy, almost bydefinition, overtreats patients.It is the holy grail of those ofus involved in adjuvant therapy to definethe patients who are going to failso that we can decrease the incidenceof tumor recurrence and avoid givingadditional therapy to patients who havebeen cured by their primary treatment.
Supportive and Palliative Care in Cancer Patients
October 1st 2004The term “supportive oncology” refers to those aspects of medical careconcerned with the physical, psychosocial, and spiritual issues facedby persons with cancer, their families, their communities, and their healthcareproviders. In this context, supportive oncology describes both those interventionsused to support patients who experience adverse effects caused by antineoplastictherapies and those interventions now considered under the broad rubric of palliativecare. At its core, palliative care is concerned with providing the maximumquality of life to the patient/family unit.
Anthracycline vs Nonanthracycline Adjuvant Therapy for Breast Cancer
October 1st 2004The treatment of breast cancer has progressed substantially overthe past 15 years. Data from randomized adjuvant trials have shownthat the risk of disease recurrence and death is significantly reducedwhen adjuvant chemotherapy and/or hormonal therapy is added to treatment.As new strategies are incorporated, one of the continued controversiesin patient management is whether adjuvant anthracyclinesshould be the preferred treatment for all patients. Data from randomizedand translational clinical trials have become available and arehelping to elucidate the proper role of anthracyclines, as well as their acuteand long-term toxicities. In most situations, an anthracycline is currentlypreferred, but other single and combination chemotherapies arecurrently under evaluation and appear promising for use in the adjuvantsetting. Continued breast cancer research using molecular markers(such as topoisomerase II–alpha and gene clusters) as predictors oftreatment response, could help individualize decisions regardingwhether to incorporate anthracyclines into adjuvant therapy regimens.
Prostate Cancer 2004: Insights From National Disease Registries
September 1st 2004In their article, Drs. Matthew Cooperberg,Sangtae Park, and PeterCarroll summarize four nationalregistries that have studied risk migration,practice patterns, outcomepredictions, and quality-of-life outcomesin prostate cancer. Each of thesefour large registries-the Prostate CancerOutcomes Study (PCOS), the Departmentof Defense Center for ProstateDisease Research (CPDR), the Cancerof the Prostate Strategic Urologic ResearchEndeavor (CaPSURE), and theShared Equal Access Regional CancerHospital (SEARCH)-has a particularstrength that complements theothers. As more patients enroll in theseregistries, researchers will gain greaterinsight into the patterns of care andclinical and health-related quality oflife for diverse cohorts of prostate cancerpatients.
Treatment of Advanced Non–Small-Cell Lung Cancer in Special Populations
September 1st 2004Only a minority of elderly patientswith advanced non–small-cell lung cancer(NSCLC) have been offered palliativechemotherapy, as indicated by clinicalsurveys beginning in the 1980s.Lilenbaum’s thorough review of thetreatment of locally advanced and metastaticNSCLC studies in two specialpopulations (elderly and Eastern CooperativeOncology Group [ECOG]performance status [PS] 2 patients)highlights a new trend seen with theadvent of better-tolerated chemotherapyregimens.
Comparing Radical Prostatectomy and Brachytherapy for Localized Prostate Cancer
September 1st 2004There are two problems with thepaper by Quaranta et al, neitherof which can be overcomewith discussion or sophistry. The firstconcerns the criteria used to determinewhether a report would be includedin this analysis. Specifically,any series with a median follow-up ofonly 3 years was included if it alsomet the other inclusion criteria. Thisis simply inadequate, as there is greatconsensus that studies with 3-year follow-up miss many recurrences. Thesecond problem with the paper is thedefinition of recurrence. The AmericanSociety for Therapeutic Radiologyand Oncology (ASTRO) criteriaused by the authors has proven inferiorto using a cutoff of 0.2 ng/mL forprostate-specific antigen (PSA) nadirfollowing brachytherapy. The inaccuracyin using ASTRO criteria fordetermining cure by brachytherapy isparticularly pronounced in series withshort follow-up such as the 3-yearmedian follow-up criterion used inthis paper.
Understanding the Pathobiology of Chemotherapy-Induced Nausea and Vomiting
September 1st 2004Improved understanding of the physiologic and neuropharmacologicmechanisms underlying chemotherapy-induced nausea andvomiting (CINV) has driven significant progress in the treatment ofCINV over the past 2 decades. Recognition of the role of neurotransmittersand their receptors in the process of CINV has been central tothis progress. Initial attention focused on dopamine, then on serotonin,and most recently on substance P, which has yielded a usefulnew class of antiemetic medications known as selective neurokinin-1receptor antagonists. Preclinical studies of these neurokinin-1 receptorantagonists suggested that they would demonstrate broad antiemeticactivity in acute emesis, demonstrate activity against cisplatininduceddelayed emesis, be well tolerated, and contribute to enhancedefficacy when used in combination with other classes of antiemetics.These suggestions appear to have been largely borne out in clinicaltrials. Pharmacogenomics may offer a means to further extend andapply our understanding of CINV by enabling more selective targetingof antiemetic therapies. To date, the application of pharmacogenomicsto CINV has focused on variations in the metabolism of serotoninreceptor antagonists by CYP 450 genotype and variations in the5-HT3 receptor gene itself.
TEGAFOX Could Replace FOLFOX in First-Line Metastatic Colorectal Cancer, French Trial Concludes
September 1st 2004The 30 reports in this special supplement to Oncology News International represent highlights of ongoing major clinical trials and new research presented at ASCO 2004 regarding state-of-the-art chemotherapeutic management of gastrointestinal and other cancers. Important developments in capecitabine as adjuvant therapy, novel targeted agents, and new combinations are discussed.
CAPIRI and CAPOX Comparable as Second- Line Tx for Metastatic Colorectal Cancer
September 1st 2004The 30 reports in this special supplement to Oncology News International represent highlights of ongoing major clinical trials and new research presented at ASCO 2004 regarding state-of-the-art chemotherapeutic management of gastrointestinal and other cancers. Important developments in capecitabine as adjuvant therapy, novel targeted agents, and new combinations are discussed.
Promising Response to TK Inhibitor Erlotinib in Second-Line Metastatic Colorectal Cancer
September 1st 2004The 30 reports in this special supplement to Oncology News International represent highlights of ongoing major clinical trials and new research presented at ASCO 2004 regarding state-of-the-art chemotherapeutic management of gastrointestinal and other cancers. Important developments in capecitabine as adjuvant therapy, novel targeted agents, and new combinations are discussed.
Thymidine Phosphorylase Expression ‘Useful’ as Predictive Marker of Response to Capecitabine
September 1st 2004The 30 reports in this special supplement to Oncology News International represent highlights of ongoing major clinical trials and new research presented at ASCO 2004 regarding state-of-the-art chemotherapeutic management of gastrointestinal and other cancers. Important developments in capecitabine as adjuvant therapy, novel targeted agents, and new combinations are discussed.
COX-2: Can Celecoxib Help Capecitabine ‘XCEL’ in Metastatic Colorectal Cancer?
September 1st 2004The 30 reports in this special supplement to Oncology News International represent highlights of ongoing major clinical trials and new research presented at ASCO 2004 regarding state-of-the-art chemotherapeutic management of gastrointestinal and other cancers. Important developments in capecitabine as adjuvant therapy, novel targeted agents, and new combinations are discussed.
MOSAIC Data Support FOLFOX- 4 Use in High-Risk Stage II Colon Cancer
September 1st 2004The 30 reports in this special supplement to Oncology News International represent highlights of ongoing major clinical trials and new research presented at ASCO 2004 regarding state-of-the-art chemotherapeutic management of gastrointestinal and other cancers. Important developments in capecitabine as adjuvant therapy, novel targeted agents, and new combinations are discussed.