Search Results
Your search for ,DnA matches 2238 pages
Showing 1701 - 1750Researchers Map Potential Genetic Origins, Pathways of Lung Cancer in Never-smokers
Findings from a small study on potential gene mutations and pathway alterations that could lead to lung cancer in never-smokers were presented in a poster at the American Association for Cancer Research–International Association for the Study of Lung Cancer Joint Conference on Molecular Origins of...
How I Work up the Patient with Thrombocytosis
Thrombocytosis is defined as a platelet count greater than 400 × 109/L. In routine clinical practice, thrombocytosis is much more likely to be reactive (> 80% of cases) than primary. Reactive thrombocytosis is usually associated with infections, inflammation, trauma, hemolysis, metastatic...
SIDEBAR: Genotype and Treatment Outcomes
At the 2011 San Antonio Breast Cancer Symposium, Joyce O’Shaughnessy, MD, described how the genetic profiles of 12 patients with metastatic triple-negative breast were used to guide treatment for metastatic disease Patient #10 was a 59-year-old African-American woman with primary...
Next-generation Sequencing in Metastatic Triple-negative Breast Cancer Yields Rewards
The startling molecular heterogeneity of metastatic triple-negative breast cancer is now obvious and helps to explain the poor outcomes observed in this patient subset. Comprehensive genomic and transcriptomic interrogation of metastatic triple-negative breast cancer is elucidating the molecular...
New Assays, Surveillance Techniques Reported for GI Malignancies
Two studies highlighted in press conferences and one presented during an invited lecture at the 2012 Gastrointestinal Cancers Symposium, held recently in San Francisco, suggest that early detection of pancreatic, esophageal, and colorectal cancers could soon improve. Enzyme Immunoassay Spots...
Important News Briefs: New Data Reported in Prostate, Bladder, and Kidney Cancers
The recent 2012 Genitourinary Cancers Symposium featured a wealth of presentations on prostate, bladder, kidney, and other genitourinary cancers. Brief summaries of some of the oral and poster sessions are presented. Exercise and Recurrence Vigorous exercise has been shown to reduce cancer...
Targeted Mutations in ATR Pathway and Implications for Combination Strategies
Many chemotherapy agents work by causing DNA strand breaks or accumulation of DNA replication intermediates. ATR (ataxia-telangiectasia mutated and Rad 3-related protein) is a potential target for combination drug strategies, because signaling of this protein in response to such altered DNA...
Targeted Massively Parallel Sequencing Identifies Clinically Relevant Alterations in Cancer Genes
Systematic methods for profiling tumor genomic alterations remain underdeveloped, with current clinical profiling usually being confined to identification of limited numbers of oncogene point mutations. At present, there is no systematic technique for interrogating tumor samples in situ for a...
Cancer Informatics: A Future Necessity, but Challenges Abound
The National Cancer Policy Forum of the Institute of Medicine (IOM) recently convened a workshop on cancer informatics to examine and discuss needs and challenges facing biomedical researchers, which will in turn affect the way oncology is practiced in the future. “This is a time of huge scientific ...
Institute of Medicine Report on Omics-based Testing Bolsters ASCO’s Blueprint for Transforming Cancer Research
A recent report by the Institute of Medicine (IOM) addresses elements that ASCO has stated are necessary for transforming the therapeutic development and clinical trial processes. In March, the IOM released the report “Evolution of Translational Omics: Lessons Learned and the Path Forward,” which...
Novel Agents and Genomic Sequencing Show Promise in Improving Multiple Myeloma Management
For over 30 years, Kenneth C. Anderson, MD, Kraft Family Professor of Medicine at Harvard Medical School and Director of the Jerome Lipper Multiple Myeloma Center and LeBow Institute for Myeloma Therapeutics at Dana-Farber Cancer Institute in Boston, has focused his translational research on B-cell ...
Automated HER2 Immunohistochemical System Approved
Leica Biosystems, a division of Leica Microsystems, announced that it has received premarket approval from the FDA for its Bond Oracle HER2 IHC System, a semi-quantitative immunohistochemical assay to determine human epidermal growth factor receptor 2 oncoprotein status in formalin-fixed,...
Scoring System Based on DNA Repair Pathways Predicts Outcomes and Response to Platinum Therapy
A potentially important tool to identify patients with advanced-stage ovarian cancer likely to benefit from platinum-based chemotherapy and redirect those with poor predicted outcomes to alternative treatments was developed using gene-expression data and validated in two independent datasets. While ...
Anti-EpCAM Antibody-Drug Conjugate Shows High Activity against Pancreatic Cancer
Human epithelial cell adhesion molecule (EpCAM) is overexpressed in many cancers. Although anti-EpCAM antibodies have shown promise in preclinical studies, early-phase clinical evaluation of these antibodies has been disappointing. To determine whether the antitumor activity of anti-EpCAM antibody...
Risk Stratification and Targeted Therapy, Abetted by Collaboration, Improve Outcomes for Children with Cancer
Outcomes for children with cancer have “improved over the course of the years incrementally, mostly not from the development of new drugs, because virtually all the drugs that we use now in leukemia were available in the 1970s. It is really through better understanding of the heterogeneity of the...
Decoding the Genetic Blueprint of Cancer Cells: Findings in Multiple Myeloma and Breast Cancer
Advances in next-generation DNA sequencing technologies are allowing scientists to decipher the whole genome or whole exome (ie, the coding region of the genome) of cancer specimens more quickly and inexpensively than ever before. And the results are revealing genes that had not previously been...
Single Nucleotide Polymorphisms Predict Severe Toxicity of Adjuvant Therapy in Colorectal Cancer
Oxaliplatin/fluoropyrimidine–based adjuvant therapy is of benefit in patients with resected stage II/III colon cancer, but the ability to predict risk of toxicity could improve care by permitting individualization of treatment. Ana Custodio, MD, and colleagues from GEMCAD (Grupo Español...
Understanding and Managing Pseudoprogression in Glioblastoma Patients
Pearls in Neuro-oncology is guest edited by Tracy Batchelor, MD, Director, Division of Neuro-Oncology, Massachusetts General Hospital Cancer Center, and Professor of Neurology, Harvard Medical School, Boston. The series is intended to provide the practicing oncologist with guidance in managing...
Enzalutamide Gets Priority Review for Castrate-resistant Prostate Cancer
Medivation, Inc, and Astellas Pharma, Inc, announced that the FDA has accepted for filing the New Drug Application (NDA) for enzalutamide (formerly MDV3100) for the potential treatment of men with castration-resistant prostate cancer previously treated with docetaxel-based chemotherapy and granted...
Supportive Care Research Runs the Gamut from Genetic Markers of Treatment Side Effects to Neuropathic Pain Therapies
Attendees from around the world gathered for the Multinational Association for Supportive Care in Cancer/International Society of Oral Oncology (MASCC/ISOO) International Symposium on Supportive Care in Cancer, held June 28–30 in New York. Below are highlights from the meeting, representing...
Preclinical Research Finds Gene that Permanently Stops Cancer Cell Proliferation
Researchers at Case Western Reserve University School of Medicine, Cleveland, have discovered a mutant form of the gene Chk1 that when expressed in cancer cells, permanently stopped their proliferation and caused cell death without the addition of any chemotherapeutic drugs.1 This study illustrates ...
Evolutionary Pathways in BRCA1-associated Breast Tumors
BRCA1 germline mutations are associated with elevated risk of breast and ovarian cancers, and somatic loss of the wild-type BRCA1 allele has been thought to be a rate-limiting initiating step in tumor development. BRCA1-associated breast tumors acquire additional somatic alterations during...
Anticancer Effect of Diabetes Drug Metformin
Retrospective analyses have indicated that the antidiabetic agent metformin may be associated with a quite substantial reduction in risk of cancers. There is evidence that the anticancer effects of metformin are related to inhibition of the growth of certain cancers via activation of AMP kinase...
Novel Drugs Enhance—but Complicate—Prostate Cancer Treatment
Three emerging agents for castration-resistant prostate cancer are extending lives and defining their roles in the treatment scenario, according to William Oh, MD, of Mount Sinai School of Medicine, New York, who commented on new data at the Best of ASCO Boston meeting. “We are talking about...
SIDEBAR: Is Microsatellite Instability Status also Predictive in Stage II Disease?
“Microsatellite instability status is a validated prognostic marker in stage II colorectal cancer. It is the strongest prognostic marker we have in that group,” Dr. Overman commented. “The fact is that we should be getting this [test] consistently to help us make this discussion [of prognosis]...
Paclitaxel Poliglumex Gets Orphan Drug Designation for Glioblastoma Multiforme
Cell Therapeutics, Inc, recently announced that paclitaxel poliglumex (OPAXIO) has been granted orphan drug designation by the FDA for the treatment of glioblastoma multiforme. Orphan designation was granted based on preliminary activity seen from phase II results of paclitaxel poliglumex when...
Antioxidant Supplementation in Patients with Cancer: Is It Safe and Effective?
Antioxidant supplements are widely used by healthy individuals as a preventive measure against cancer and heart disease and by patients with cancer to promote healing and prevent recurrence. Studies suggest that dietary supplements are used by up to 81% of cancer survivors, and that 14% to 32%...
Enzalutamide for Metastatic Castrate-resistant Prostate Cancer
In the Clinic provides overviews of novel oncology agents, addressing indications, mechanisms, administration recommendations, safety profiles, and other essential information needed for the appropriate clinical use of these drugs. Indication In August 31, enzalutamide (Xtandi) was approved for the ...
Hormonal Therapy with Enzalutamide Increases Survival in Castrate-resistant Prostate Cancer after Chemotherapy
The androgen receptor–signaling inhibitor enzalutamide (Xtandi) is reported to differ from conventional antiandrogen agents in that it inhibits androgen receptor nuclear translocation, DNA binding, and coactivator recruitment, has a greater affinity for the androgen receptor, and induces tumor...
Cognitive Impairment in Patients with Cancer
Cancer therapy, including radiation and chemotherapy, can be harmful to multiple organ systems. The central nervous system (CNS) has generally been considered less vulnerable to the toxic effects of cancer therapy. However, the use of more aggressive treatment modalities combined with prolonged...
Viral Infection and Liver Cancer: A Global Health Crisis
It is estimated that at least 15% of all cancers worldwide can be attributed to infectious etiologies, mostly viral infections. At this year’s ASCO Annual Meeting, an intriguing session on virally induced cancers provided critical clues that could be of real practical value in advancing our battle...
Developments in Hematologic Cancers Include New Considerations in Treating Challenging Leukemias and Multiple Myelomas
Speakers at the National Comprehensive Cancer Network (NCCN) 7th Annual Congress on Hematologic Malignancies reviewed the current standard of care for various hematologic cancers and explored new concepts in treatment. Below are highlights from presentations on chronic myelogenous leukemia (CML),...
Patients with Lynch Syndrome Who Have Had Colorectal Cancer Are at Increased Risk of Other Cancers
Patients who have had colorectal cancer and who are carriers of the DNA mismatch repair gene mutations that cause Lynch syndrome “have an increased risk of a greater range of cancers than the recognized spectrum of Lynch syndrome cancers, including breast and prostate cancers,” according to a study ...
Cancer Genome Atlas Network Reports Comprehensive Molecular Portraits of Breast Tumors
The Cancer Genome Atlas Network recently reported findings of analyses of primary breast cancers in a total of 825 patients using genomic DNA copy number arrays, DNA methylation, exome sequencing, mRNA arrays, microRNA sequencing, and reverse-phase protein arrays.1 Integration of information across ...
Novel Drug Combinations Present New Hope for Effective Treatments in Multiple Myeloma
Developing early-phase clinical trials that incorporate combinations of novel agents targeting different pathways in the hematologic cancer multiple myeloma is a leading focus of the work of Sagar Lonial, MD, Professor of Hematology and Vice Chair of Clinical Affairs in the Department of Hematology ...
Genome-wide Analysis Reveals Molecular Pathway Aberrations in Uterine Serous Cancer
The molecular pathogenesis of uterine serous carcinoma, the most aggressive form of uterine cancer, remains largely undefined. Kuhn and colleagues from Johns Hopkins Medical Institutions recently identified prominent genetic alterations in uterine serous carcinoma using whole-exome sequencing....
Risk Reduction for Patients with Multiple Primary Cancers
The number of patients with multiple primary cancers is increasing so that second malignant neoplasms now represent approximately 16%, or 1 in 6 cancers reported to the Surveillance, Epidemiology, and End Results (SEER) Program. While some second malignant neoplasms are treatment-related, others...
Gene-expression Profiles of Triple-negative Breast Cancers Differ between African American and Native African Women
Triple-negative breast cancers in African-American women and native African women have differing gene-expression profiles that may have implications for treatment, according to the first study to directly compare tumor gene expression between these populations. Results were reported at the Fifth...
Current Perspectives on Triple-negative Breast Cancers
Triple-negative breast cancer—which lacks expression of the estrogen receptor, progesterone receptor, and HER2 oncogene—is a challenge for oncologists. The emergence of data showing strong heterogeneity for this subtype of breast cancer creates even more confusion regarding prognosis and...
Screening and Risk-reduction without Testing Positive for BRCA Mutation
Many women who do not test positive for a BRCA mutation undergo additional ovarian cancer screenings and risk-reducing procedures, despite limited data to determine the effectiveness of these interventions among an average-risk population. Results of an analysis of data from 1,077 women who were...
Physician-Scientist Judah Folkman, MD, Faced Years of Skepticism Before His Theory of Angiogenesis Was Proven
That Moses Judah Folkman would buck tradition, breaking his family’s long line of rabbinical succession and pursuing a career in science and medicine instead, was evident from the time he was a young child. Born in Cleveland on February 24, 1933, the first child of Rabbi Jerome and Bessie Folkman,...
French Investigators Prospectively Test Genomically Driven Treatment in Metastatic Breast Cancer
Whole-genome DNA analysis prospectively identified alterations in metastatic tumors that could be individually targeted with molecular agents, in a study presented at the 2012 European Society for Medical Oncology (ESMO) Congress by Fabrice André, MD, of Institut Gustave-Roussy, Villejuif, France....
Internationally Renowned Gynecologic Cancer Researcher Joins Ohio State
Internationally renowned uterine cancer researcher and geneticist Paul Goodfellow, MD, PhD, will lead a new team of three researchers devoted to gynecologic oncology research at The Ohio State University Comprehensive Cancer Center – Arthur G. James Cancer Hospital and Richard J. Solove Research...
Inotuzumab Moves Forward in Relapsed/Refractory ALL
Single-agent inotuzumab ozogamicin achieved an encouraging overall response rate of 57% in the treatment of relapsed/refractory acute lymphoblastic leukemia (ALL) in a phase II trial reported at the 54th Annual Meeting of the American Society of Hematology (ASH). Response was independent of monthly ...
Somatic HER2 Mutations That Drive Cancer Found in HER2-negative Breast Cancer
A proportion of patients with breast cancer whose tumors test HER2-negative for gene amplification on fluorescence in situ hybridization or immunohistochemistry harbor HER2 mutations that are amenable to treatment with anti-HER2–targeted therapy, according to a gene-sequencing study presented at...
Key Pathways Identified in Triple-negative Breast Cancer
Five key biologic pathways have become evident in triple-negative breast cancer tumors, and these pathways may be targetable with agents that are currently available or in development, results from an international genetic analysis revealed at the 2012 San Antonio Breast Cancer Symposium. Justin M. ...
Genetic Basis of High-risk Childhood Cancer Points to Possible New Drug Treatment Strategy
Research led by scientists at St. Jude Children’s Research Hospital, Memphis, Tennessee, has identified a possible lead in treatment of two childhood leukemia subtypes known for their dramatic loss of chromosomes and poor treatment outcomes. The findings also provide the first evidence of the...
Gene in Eye Melanomas Linked to Good Prognosis
Melanomas that develop in the eye often are fatal. Now, researchers at Washington University School of Medicine and the Siteman Cancer Center, St. Louis, Missouri, report they have identified a mutated gene in melanoma tumors of the eye that appears to predict a good outcome. The research was...
As Computers Learn to 'Talk' to Each Other, Patient Care Will Improve
Last fall, Edward P. Ambinder, MD, Clinical Professor of Medicine, Hematology, and Medical Oncology at the Icahn School of Medicine at Mount Sinai in New York, and a member of ASCO’s Health Information Technology Work Group, spoke about “The Information Age: Cyberspace and Cancer,” at the...
ASH Highlights Included New Data in Myeloma, Lymphoma, and Leukemia, plus Studies of Mucositis and Graft-vs-Host Disease
The 54th Annual Meeting of the American Society of Hematology (ASH) featured about 5,000 abstracts, including oral sessions and posters, as well as named lectures and symposia. In addition to our regular news coverage from the meeting, below are capsule summaries of a few news highlights that we...
