Imaging experts weigh in on screening controversy
November 17th 2009Despite the hubbub, breast imaging researchers saw nothing new in the findings of Dr. Esserman’s group. Daniel Kopans, MD, a professor of radiology at Boston’s Massachusetts General Hospital, called her observation about mammography catching nonlethal cancers but missing aggressive ones “a fundamental concept that is older than I am. Mammography saves lives by finding moderate- and slow-growing cancer that will kill in five or more years without diagnosis and treatment,” according to Dr. Kopans.
Moderate marijuana use may tamp risk of H&N cancer
November 17th 2009Cannabinoids, which are a byproduct of marijuana smoke, have been recognized to have potential antitumor properties, but evidence of a relationship between marijuana use and the induction of head and neck squamous cell carcinoma has been inconsistent.
Postsurgical H&N patients manage to complete radiotherapy
November 17th 2009Head and neck patients who undergo surgery first are more likely to complete radiation therapy, according to Seattle-based researchers. Megan Dann Fesinmeyer, PhD, MPH, and colleagues noted that radiation dose and treatment duration correlated with tumor control and survival, but that breaks in radiotherapy have been associated with inferior tumor control.
Prometheus releases trio of tissue-specific microRNA tests
November 16th 2009Prometheus Laboratories has launched the ProOncDx line of cancer diagnostic tests. ProOncDx TumorSource pinpoints the tissue of origin in metastatic tumors in a number of cancers including breast, brain, kidney, colon, liver, ovary, lung, pancreas, and prostate. The test measures the expression level of 48 microRNA biomarkers
Pain relief with radiation Rx may come at too high a price
November 16th 2009An analysis by researchers at the University of Michigan Comprehensive Cancer Center shows that costs vary widely for different treatment regimens and from one delivery method to another. Yet receiving more treatments and spending extra on more sophisticated technology may do little good, at least when it comes to pain relief.
Rasburicase Approved to Manage Complications of Anticancer Therapy
November 10th 2009Sanofi-aventis US announced that the US Food and Drug Administration (FDA) has granted marketing approval for rasburicase (Elitek) to be used for the initial management of plasma uric acid (PUA) levels in adult patients with leukemia, lymphoma, and solid tumor malignancies who are receiving anticancer therapy expected to result in tumor lysis syndrome (TLS) and subsequent elevations of plasma uric acid.
Cancer, not HPV vaccination, hastened death of UK girl
October 29th 2009Cancer killed a 14-year-old girl who died shortly after being given Cervarix as part of a national immunization program. Early reports speculated that there may have been a link between the shot and her death, but according to a coroner’s assessment, there was no indication that the culprit was the HPV vaccine, which is marketed by GlaxoSmithKline. The girl’s death was caused by malignant disease in the heart and lungs, according to the coroner’s report.
Antidepressants continue to show increased inhibition of colorectal tumor cell growth
October 29th 2009Use of antidepressants, particularly selective serotonin reuptake inhibitors and possibly tricyclic antidepressants, is associated with a reduced risk of colorectal cancer, according to research by the Group Health Research Institute in Seattle. But it’s too soon to make specific recommendations on how to harness this potential value of these drugs in cancer prevention.
New class of alpha emitters takes aim at bone metastases
October 29th 2009A new class of cancer alpha-pharmaceuticals is approaching the marketplace, one built around the basis of radiotherapy itself. An isotope of radium, the element discovered more than a century ago by Pierre and Marie Curie, is the cornerstone of this new class of radiopharmaceuticals.
Proton therapy report advises caution
October 29th 2009The limited evidence on the comparative effectiveness of proton-beam therapy, especially in comparison to other radiation-based treatment modalities, undermines the value of this up-and-coming technology, according to a comparative effectiveness report by the Agency for Healthcare Research and Quality.
The Allegheny General Modification of the Harvard Breast Cosmesis Scale for the Retreated Breast
October 23rd 2009Repeat lumpectomy and retreatment radiotherapy following ipsilateral breast tumor recurrence (IBTR) by either external-beam irradiation or brachytherapy in lieu of salvage mastectomy is an area of significant recent clinical interest. Multiple authors have reported their results, with encouraging numbers of patients avoiding mastectomy.[1‑4]
Circulating tumor cells edge out imaging in breast mets
October 20th 2009Five may be the magic number to determine whether a patient can undergo therapeutic monitoring with a test for circulating tumor cells or must undergo an FDG-PET/CT exam, according to research out of M.D. Anderson Cancer Center.
Avastin Breast Rx Trial Enrollment Halted Due to Cardiotoxicity Cases
October 19th 2009Roche announced that enrollment in a phase III clinical trial testing bevacizumab (Avastin) plus chemotherapy for women with early-stage breast cancer was suspended after six patients who were given the drug developed congestive heart failure. Study protocols required that enrollment be stopped if six or more cases of congestive heart failure occurred in the first 200 patients, according to the company.
Pain relief may come at too high a price
October 19th 2009An analysis by researchers at the University of Michigan Comprehensive Cancer Center shows that costs vary widely for different treatment regimens and from one delivery method to another. Yet receiving more treatments and spending extra on more sophisticated technology may do little good, at least when it comes to pain relief.
Epigenetic mechanisms may drive CD20 negative transformation in B-cell lymphoma
October 19th 2009Resistance to rituximab (Rituxan) has emerged as a considerable problem as the drug has become widely used to treat B-cell lymphomas, such as non-Hodgkin’s lymphoma, follicular lymphoma, and diffuse large B-cell lymphoma. A recent study in Blood suggested that resistance to rituximab is related to downregulation of CD20 expression via epigenetic mechanisms.
Proton-beam therapy calls for unique skills
October 19th 2009The first proton-beam therapy center in Loma Linda, Calif., opened almost 20 years ago, and today six are operating in the U.S. Another center will open by the end of 2009 with several more planned in the next two years, including centers in continental Europe and the UK. A growing body of research affirms the efficacy of proton-beam therapy (see Table).
Ultrasound images bear prognostic gems for oncology
October 16th 2009Subtle clues to the better management of cancer patients may lie hidden in images otherwise used exclusively for diagnosis. German researchers at ECCO/ESMO 2009 have found that ultrasound images of lymph nodes may contain clues to whether and to what extent melanoma has begun to spread. The discovery raises the possibility that ultrasound might help oncologists predict a patient’s probable survival without the need for sentinel node biopsy (abstract O9303).
Adjuvant Rx yields minor benefit in less aggressive colon cancer
October 15th 2009Stage II colon cancer patients who are negative for microsatellite instability and lymphocytic infiltrate should not undergo adjuvant chemotherapy, according to surgeons at Oregon Health and Science University and Legacy Health System, both in Portland.