Drs. Levine and Gemignanihave provided a comprehensivereview of the literatureregarding the management of patientswith hereditary breast/ovarian cancersyndrome. As noted, over 200,000new cases of breast cancer and 25,000new cases of ovarian cancer are estimatedfor 2003.[1] Only a small portionof these cases will be hereditary;however, these are the cases that maybenefit from preventive measures. Thepotential for risk-reducing strategiesin these patients has become a criticalissue over the past several years. Thisreview highlights the salient featuresof identifying “at-risk” patients, aswell as the benefits and limitations ofsurgical prophylaxis.
In this review we discuss the rationale and underlying radiobiologic concepts for hypofractionation, and review the clinical trials and ASTRO guidelines supporting hypofractionated radiation in the treatment of breast cancer.
In a step toward a clinical trial, the tumor response and survival of a weekday-on/weekend-off schedule of UFT was compared with its conventional daily schedule in a cancer-bearing rat model. The dose-intensive schedule-600 mg of UFT for 5 days followed by 2 drug-free days-amounts to a weekly dose similar to the conventional schedule of 400 mg/day. The weekday-on/weekend-off schedule provided increased survival and significantly greater antitumor activity than the conventional daily schedule, with no difference in adverse reactions.
Drs. Eltabbakh and Piver present a comprehensive review of the management and prognosis of patients with extraovarian primary peritoneal carcinoma (EOPPC). Increased recognition and more precise definition have led many physicians and scientists to recognize EOPPC as a distinct clinical entity with a unique etiology. However, staging and treatment criteria for EOPPC have been modeled after criteria for papillary serous ovarian cancer, which is clinically and histologically similar. The Gynecologic Oncology Group (GOG) has allowed the inclusion of patients with EOPPC into clinical trials designed for patients with epithelial ovarian cancer.
Sunitinib malate (Sutent, SU011248) is an oral multitargeted tyrosine kinase inhibitor used for treatment of renal cell carcinoma and gastrointestinal stromal tumor. We report a case of a patient who developed Guillain-Barré syndrome after initial treatment with sunitinib, with recurrent symptoms upon reintroducing the drug. This is the first report of such an effect. The literature on chemotherapy-induced Guillain-Barré syndrome is also reviewed. Oncology providers should be aware of this rare but potentially serious possible adverse effect of sunitinib.
The understanding of the relationship between genetic variation and an individual patient’s response to radiation therapy has gained significant ground over the past several years. Genetic markers have been identified that could ultimately serve as the foundation for predictive models in clinical practice, and that hold the potential to revolutionize the delivery of precision medicine in oncology.
In this review, we will describe the mechanism of action of CAR T cells, discuss outcomes of current clinical trials, and highlight emerging directions for this exciting approach to cancer treatment.
Although no overall differences in survival have been observed betweenthe many chemotherapy combinations in non–small-cell lungcancer, the clinical application of mRNA expression levels of amplifiedgenes may disclose many genetic influences on cytotoxic drug sensitivityand enable clinicians to tailor chemotherapy according to eachindividual’s gene profile. Specifically, the assessment of ribonucleotidereductase subunit M1 and thymidylate synthase mRNA expression levelsmight select patients who benefit from gemcitabine (Gemzar) orpemetrexed (Alimta) combinations. Until recently, clinical prognosticfactors such as performance status, weight loss, and lactate dehydrogenasewere the only parameters used to predict chemotherapy responseand survival. However, accumulated data indicate that overexpressionof genes involved in cancer glycolysis pathways plays an important role,and might be an independent mechanism of chemoresistance. Thedysregulation of glycolytic genes is affected by growth signals involvingthe PI3K/Akt pathway and downstream genes such as hypoxiainduciblefactor-1-alpha. One can thus envision that substantial improvementsin therapeutic outcome could benefit from the integrationof tailored ribonucleotide reductase-dependent chemotherapy, ribonucleotidereductase antisense therapy, and targeted therapy.
In this excellent review of breastmagnetic resonance imaging (MRI),Gundry discusses the potential advantagesand disadvantages of magneticresonance in breast cancerscreening and management and givesrecommendations for how it shouldbe applied.
Noopur Raje, MD, discusses the role of T-cell affinity in bispecific therapy for patients with relapsed/refractory multiple myeloma and how it impacts treatment practices.
Over the past decade, patients with locally advanced rectal cancer at The University of Texas M. D. Anderson Cancer Center have been managed with preoperative chemoradiation. Patients achieving a complete clinical response to preoperative chemoradiation have had better pelvic tumor control, sphincter preservation, and overall survival than those with gross residual disease. Some patients achieving a complete clinical response have even had rectal-preserving surgery (full-thickness local excision).
In a recent Hot Topics article, reimbursement rates for Medicare physicians are discussed, and how it will impact their practice.
You may have noticed that the issue you received last month looked a little different than what you’re used to seeing from the ONCOLOGY journal!
While some improvement was achieved by adding etoposide and shortening the treatment intervals from 3 to 2 weeks (CHOEP-14), best results in young good-prognosis patients (age-adjusted International Prognostic Index [IPI] = 0,1) have been achieved with six cycles of CHOP (cyclophosphamide, doxorubicin HCl, vincristine [Oncovin], prednisone)-like chemotherapy in combination with the anti-CD20 antibody rituximab (Rituxan). The role of additional radiotherapy in this setting remains to be determined. With this approach, 2-year eventfree survival rates of > 90% and overall survival of > 95% can be achieved in a very favorable subgroup (patients without IPI risk factor and no bulky disease), while further improvement is warranted for the less favorable subgroup (event-free survival only 77%). For young poorprognosis patients (age-adjusted IPI ≥ 2), the 5-year survival is around 50%, and progress has not been convincingly and specifically demonstrated in these patients. Ongoing studies will show whether dose-dense conventional or high-dose chemotherapy regimens requiring stem cell support in combination with rituximab will result in similar improvements of outcome as has been reported recently for young patients with good-prognosis aggressive lymphoma. In elderly patients, CHOP interval reduction from 3 to 2 weeks (CHOP-14) and the addition of rituximab to CHOP-21 achieved similar improvements in outcome. The ongoing RICOVER-60 (rituximab with CHOP over 60) trial of the German High-Grade Non-Hodgkin’s Lymphoma Study Group (DSHNHL) evaluates whether the combination of both approaches (R-CHOP-14) can further improve the prognosis of elderly patients.
Preclinical data suggest that irinotecan (Camptosar, CPT-11), a novel topoisomerase I inhibitor, has exhibited promising activity in the treatment of lung cancer. In a phase II study of non-small-cell lung cancer, irinotecan
Adjuvant chemotherapy has been shown to alter the natural history of patients with resected colon cancer. Two regimens (fluorouracil [5-FU] plus levamisole (Ergamisol) and 5-FU plus leucovorin) have been found most
The demand for early palliative care (PC) involvement has never been greater in the setting of capitated healthcare delivery systems. The review by Alesi et al is timely in that it illustrates innovative practice partnerships with oncology groups during a time when PC is being thrust into mainstream outpatient care.[1]
As advances in treatment strategies continue to focus on individualization of therapy, the identification of disease subsets is crucial to strategizing optimal therapeutic approaches.
Tositumomab and iodine -131 tositumomab (Bexxar) is a new radioimmunotherapy in development for the treatment of low-grade or transformed, low-grade non-Hodgkin’s lymphoma (NHL).
Because irinotecan (CPT-11, Camptosar) is a topoisomerase I inhibitor with a broad spectrum of antitumor clinical activity, we investigated its activity in relapsed or refractory non-Hodgkin’s lymphomas (NHLs). Irinotecan at 300 mg/m² IV was administered every 21 days with intensive loperamide management of diarrhea.
A prospective, randomized clinical trial was conducted to evaluate the efficacy of endocrine chemotherapy with uracil and tegafur (in a molar ratio of 4:1 [UFT]) in patients with prostate cancer. The study included two
Panelists discuss how to select appropriate bispecific antibody therapies for patients with relapsed/refractory multiple myeloma who have failed BCMA-targeted treatments, considering factors such as alternative targets, mechanisms of resistance, and emerging clinical data to provide effective subsequent treatment options.
In this interview we discuss results of the PlanB trial, which showed that use of the 21-gene recurrence score, Oncotype DX, can identify patients with early breast cancer who likely do not need chemotherapy.
Immune responses are generated in a complex network of cellular and humoral factors. The complexity of this system makes it difficult to generate subsets of cells in vivo that are most effective against cancer cells. The goal of vaccine strategies is to redirect the immune system against cancer cells primarily by generating specific T-cell responses which would be the most effective anti-tumor effector cells.
Angiogenesis is a dynamic process essential for primary tumor growth and metastases. New insights into the basic understanding of the biologic processes responsible for angiogenesis have led to the characterization of potential therapeutic targets. Several strategies for the development of antiangiogenic therapeutic modalities have been employed, including agents that (1) decrease the activity of specific angiogenic factors, (2) decrease the activity of endothelial survival factors, (3) increase the activity of naturally occurring antiangiogenic agents, or (4) indirectly downregulate angiogenic and survival factor activity.
Here we discuss the advantages and pitfalls of HIPEC in advanced ovarian cancer, as well as current data and ongoing prospective trials.
Gastrointestinal stromal tumors have until recently had a uniformly poor prognosis with lack of effective drug therapies. These tumors usually have activating mutations in either KIT or PDGFR-α tyrosine kinase receptors. Over the past decade, imatinib (Gleevec), a selective tyrosine kinase inhibitor has become the standard of care for the first-line treatment of patients with unresectable and metastatic disease. For patients with imatinib-resistant disease or intolerant to the side effects of imatinib, sunitinib (Sutent), a multitargeted tyrosine kinase inhibitor was recently approved. For earlier-stage disease, status post–complete surgical excision, preliminary data seem encouraging for the role of adjuvant imatinib in prolonging patients' disease-free interval. The impact of neoadjuvant drug therapy needs to be further classified and explored. With additional evaluation of other tyrosine kinase inhibitors and novel therapies against other molecular markers, the treatment paradigm for this malignancy should continue to evolve.
Dr. Pagani, who presented data on the joint analysis of the IBCSG TEXT and SOFT trials at the 2014 ASCO Annual Meeting, discusses how breast cancer patients in these trials responded to different methods of ovarian suppression.