MedicalResearch.com Interview with:
Adana A.M. Llanos, PhD, MPH
Assistant Professor, Department of Epidemiology
RBHS-School of Public Health
Rutgers, The State University of New Jersey
Piscataway, NJ 08854
MedicalResearch.com: What are the main findings of the study?
Dr. Llanos: Our longitudinal study examined the effects of both tomato-rich and soy-rich diets in a group of 70 postmenopausal women who participated in the study at The Ohio State University Comprehensive Cancer Center. For 10 weeks, women ate tomato products containing at least 25 milligrams of lycopene daily. For a separate 10-week period, the participants consumed at least 40 grams of soy protein daily. Before each test period began, the women were instructed to abstain from eating both tomato and soy products for two weeks. We examined the dietary intervention effects on hormone biomarkers known to be associated with obesity, namely adiponectin and leptin. After the tomato-rich diet participants' levels of adiponectin climbed nine percent. The effect was slightly stronger in women who had a lower body mass index.
MedicalResearch.com Interview with:
Dawn L. Hershman, MD MS
Associate Professor of Medicine and Epidemiology
Leader, Breast Cancer Program
Herbert Irving Comprehensive Cancer Center
Columbia University Medical Center
MedicalResearch.com: What are the main findings of the study?
Dr. Hershman: We have found in the past that compliance to 5 years of hormone therapy for the adjuvant treatment of breast cancer is low. While toxicity is a main reason, other factors are also important. Recent studies suggest out of pocket costs are high among cancer patients. We evaluated the change in adherence to hormone therapy after the introduction of generic Aromatase inhibitors. We found that discontinuation decreased and adherence increased with generic aromatase inhibitors compared to brand name. we found that higher co-payments were associated with decreased adherence and increased discontinuation. We also found that patients in the highest income group were more likely to be adherent to hormone therapy.
MedicalResearch.com Interview with:
Dr David P. Turner PhD
Assistant Professor, Director of shRNA Technology
Medical University of South Carolina
Dept of Pathology & Lab Medicine
Charleston SC 29425
MedicalResearch.com: What are the main findings of the study?
Dr. Turner: Our research has identified a potential mechanistic link between sugar derived metabolites and cancer associated pathways which may be a biological consequence of the socioeconomic and biological factors that are known to drive cancer health disparity. African Americans develop and die more frequently of cancer than any other population in the US. We examined the levels of reactive metabolites known as advanced glycation end-products, or AGEs for short, in serum and tumor samples from African American and Non-Hispanic White prostate cancer patients. In both the serum and tumor tissue, the levels of AGE metabolites were consistently higher in the African American prostate cancer patients than their White counterparts. AGE functions as a ligand for the receptor for AGEs, or RAGE for short. We also identified that RAGE protein levels were higher in African Americans with prostate cancer.
MedicalResearch.com Interview with:
Harrys A. Torres, MD, FACP
Assistant Professor, Director of Hepatitis C Clinic
Department of Infectious Diseases, Infection Control and Employee Health
The University of Texas MD Anderson Cancer Center
MedicalResearch.com: What are the main findings of the study?
Dr. Torres: The main findings of the study were that patients with hepatitis C virus (HCV) infection who were successfully treated with antivirals and attained sustained virologic response (SVR) did not have a relapse of HCV infection after receiving immunosuppressive chemotherapy for cancer. Patients in the study received different chemotherapeutic agents, including rituximab and systemic corticosteroids. Durability of SVR was maintained up to 14 years after chemotherapy in cancer patients.
MedicalResearch.com Interview with:
Nicholas M Perry MD
London Breast Institute
MedicalResearch.com: What are the main findings of your study?
Dr. Perry: The main findings from the study were that automated density readings outperformed radiologists, and that women under the age of 50 had a more significant risk of breast cancer from higher breast density.
Also, and quite surprising was the appearance of a completely different age- density pattern in women with breast cancer. Whereas the women in the study without cancer showed a normal and steady decline in breast density with age, those with cancer showed a completely different curvi-linear pattern, which was evident in women as young as 30.
The message is that breast density remains an important factor for both the current breast screening methodologies, and for future research into investigation and management.
MedicalResearch.com Interview with:
Richard Schwartz, Ph.D.
Professor, Associate Dean for Graduate Academic and Student Affairs College of Natural Science Michigan State University
Department of Microbiology and Molecular Genetics
Michigan State University East Lansing, MI 48824-4320
MedicalResearch.com: What are the main findings of the study?
Dr. Schwartz: The main finding is that exposure to a high fat diet from the age of puberty onwards hastened the development of chemical carcinogen-induced breast cancer in absence of weight gain. We also found that prior to the appearance of any tumors, we could detect changes in the mammary gland that included increased cellular proliferation, increased vascularity, and changes in immune function.
MedicalResearch.com Interview with:
Li-Shu Wang, PhD
Department of Medicine, Medical College of Wisconsin,
Milwaukee, Wisconsin
MedicalResearch.com: What are the main findings of the study?
Answer: Ulcerative colitis (UC) is frequently an intermediate step to colon cancer. The interleukin-10 knock-out (KO) mouse is a genetic model of this progression. We have now shown that KO mice fed 5% black raspberries (BRBs) had significantly less colonic ulceration as compared to KO mice that consumed the control diet. Dysfunction of the Wnt signaling pathway is a key event in UC-associated colon carcinogenesis. We investigated the effects of BRBs on the Wnt pathway and found that the BRB-fed KO mice exhibited significantly decreased promoter methylation of Wnt antagonists and a significantly lower level of β-catenin nuclear translocation. Our results suggest that BRBs inhibit colonic ulceration partly through inhibiting aberrant epigenetic events that dysregulate Wnt signaling.
MedicalResearch.com Interview with:
Dr. Kelly K. Hunt, M.D., F.A.C.S.
Professor, Department of Surgical Oncology, Division of Surgery
Chief, Breast Surgical Oncology Section, Department of Surgical Oncology
The University of Texas MD Anderson Cancer Center, Houston, TX
MedicalResearch.com: What are the main findings of the study?
Dr. Hunt: The primary endpoint of the Z1041 trial was the proportion of patients who had pathological complete response in the breast, defined as the percentage of women who started the neoadjuvant treatment with no histological evidence of disease in the breast at surgery. We found that high pathologic response rates were observed in both treatment groups with similar cardiac safety profiles in both arms of the trial. Specifically, 56.5% of patients in the sequential group (fluorouracil, epirubicin and cyclophosphamide on day one of a 21-day cycle for four cycles followed by paclitaxel plus trastuzumab weekly for 12 weeks) had a complete pathological response versus 54.2% of the patients who received the concurrent regimen (paclitaxel and trastuzumab weekly for 12 weeks followed by fluorouracil, epirubicin and cyclophosphamide on day one of a 21-day cycle with trastuzumab on days one, eight and 15 of the 21-day cycle for four cycles). The difference in pathologic complete response rates between the treatment arms was not statistically significant. Cardiac safety was a secondary endpoint of the trial and we found that both regimens had acceptable cardiac safety profiles.
MedicalResearch.com Interview
Yuri E. Nikiforov, M.D., Ph.D.
Professor of Pathology, Vice Chair for Molecular Pathology
Director, Division of Molecular & Genomic Pathology
Department of Pathology, University of Pittsburgh Pittsburgh, PA
MedicalResearch.com: What are the main findings of the study?
Dr. Nikiforov: This is examined temporal changes in mutational profiles and standardized histopathologic features of thyroid cancer in the U.S. over the last four decades. It showed a significant change in molecular profiles of thyroid cancer during the past 40 years as it determined two major trends in changing the mutational make-up of thyroid cancer: a rapid increase in the prevalence of RAS mutations, particularly for the last 10 years, and continuous decrease in frequency of RET/PTC rearrangement. The rising incidence of RAS mutations points to new and more recent etiologic factors, probably of a chemical or dietary nature. The decreasing incidence of RET/PTC rearrangements, a known marker of high-dose environmental and medical radiation, suggest that the impact of ionizing radiation, at least as related to high-dose environmental exposures and historical patterns of radiation treatment for benign conditions, is diminishing.
Ying Bao, MD, ScD
Department of Medicine, Brigham and Women's Hospital and Harvard Medical School
Boston, MA.
MedicalResearch.com: What are the main findings of the study?
Dr. Bao: Frequent nut consumption is inversely associated with risk of pancreatic cancer in women, independent of other potential risk factors for pancreatic cancer.
MedicalResearch.com Interview with
Kieron M. Dunleavy, M.D.
Metabolism Branch
Lymphoma Therapeutics Section
Center for Cancer Research
National Cancer Institute, Bethesda, MD 20892
MedicalResearch.com: What are the main findings of the study?
Dr. Dunleavy: We found that low-intensity therapy was highly effective in Burkitt's lymphoma and cured over 95% of patients with the disease.
MedicalResearch.com Interview with:
James Murphy, M.D.
Assistant Professor, Department of Radiation Medicine and Applied Sciences, Center for Advanced Radiotherapy Technologies ,UC San Diego Moores Cancer Center
La Jolla, CA 92093
MedicalResearch.com: What are the main findings of the study?
Dr. Murphy: This study evaluated racial disparity in metastatic colorectal cancer. In a large population-based cohort we found of over 11,000 patients we found that black patients were less likely to be seen in consultation by a cancer specialist, and were less likely to receive treatment with chemotherapy, surgery, or radiation. Furthermore, we found that this disparity in treatment accounted for a substantial portion of the race-based differences between black and white patients.
MedicalResearch.com Interview with:
Prof Jayant S Vaidya PhD
Clinical Trials Group, Division of Surgery and Interventional Science
University College London, London, UK
MedicalResearch.com: What are the main findings of the study?
Dr. Vaidya: The main findings are
MedicalResearch.com Interview with:
Alastair Sutcliffe M.D., Ph.D.
From the Institute of Child Health
University College London
MedicalResearch.com: What are the main findings of the study?
Dr. Sutcliffe: Good NEWS for couples who need assisted conception. All the births (106,000) from Great Britain over 18 years were linked to the National Childhood Cancer Registry from the Human Fertilisation and Embryology Authority (which has recorded all births sine 1991 by law.)Those children who showed up on both registries, had IVF conception and childhood cancer.
We predicted the number we would expect from the known national childhood cancer rates. We found ALMOST IDENTICAL rates 108 in our group and 109 predicted. NO INCREASED RISK OF CANCER AFTER IVF CONCEPTION IN OFFSPRING.
MedicalResearch.com Interview with:
Mila Donker, MD
Resident in Radiation Oncology
Study monitor EORTC 10981-22023 AMAROS trial
The Netherlands Cancer Institute - Antoni van Leeuwenhoek hospital, Plesmanlaan 121, 1066 CX Amsterdam, Netherlands
MedicalResearch.com: What are the main findings of the study?
Dr. Donker: Results of EORTC trial 10853 which were recently published in the Journal of Clinical Oncology showed that breast conserving treatment combined with radiotherapy reduces the risk of local recurrence in women with ductal carcinoma in situ (DCIS).
Between 1986 and 1996, this phase III EORTC trial 10853 randomized 1010 women with complete local excision of DCIS to no further treatment (503 patients) or radiotherapy (507 patients). The risk of any local recurrence was found to be reduced by 48% in the patients who also received radiotherapy. The 15-year local recurrence-free rate was 69% for the group of patients receiving breast conserving surgery alone, but this increased to 82% for the group of patients who also received radiotherapy, and the 15-year invasive local recurrence-free rate was 84% versus 90%, respectively.
MedicalResearch.com Interview with:
Steven J. Frank, M.D., associate professor of Radiation Oncology at The University of Texas MD Anderson Proton Therapy Center discusses the findings of his latest study, “Gastrostomy Tubes Decrease by Over 50% with Intensity Modulated Proton Therapy during the Treatment of Oropharyngeal Cancer Patients.”
MedicalResearch.com: What are the main findings of the study?
Dr. Frank: The study found that the use of feeding tubes in oropharyngeal carcinoma (OPC) cancer patients treated with intensity modulated proton therapy (IMPT) decreased by more than 50% percent compared to patients treated with intensity modulated radiation therapy (IMRT). This suggests that proton therapy may offer vital quality of life benefits for patients with tumors occurring at the back of the throat.
Of the 50 OPC patients enrolled in the study:
MedicalResearch.com Interview with: Dr. Peter Mazzone MD, MPH Pulmonary, Allergy and Critical Care Medicine Cleveland Clinic Main Campus Cleveland, OH 44195 MedicalResearch.com: What are the main findings of this study? Dr. Mazzone: There were 2 parts to this study: In the first part we looked at how the breath collection instrument and sensor were performing and made...
MedicalResearch.com Interview with:
Jeffrey Weber, M.D, Ph.D.
Senior Researcher, Moffitt Cancer Center
Tampa, Florida
MedicalResearch.com: What are the main findings of the study?
Dr. Weber: That the PD-1 blocking antibody nivolumab has a 25% ORR with long duration of response in ipilimumab refractory patients, and that patients with prior grade 3-4 ipilimumab related immune related side effects may be safely treated with nivolumab without reproducing the prior IPI related side effects.
MedicalResearch.com:
Prof. Dr. Gunnar Brix
Division of Medical and Occupational Radiation Protection
Federal Office for Radiation Protection
Institut für Med. Strahlenhygiene
85764 Neuherberg
MedicalResearch.com: What are the main findings of the study?
Answer: We investigated the cumulative radiation exposure and cancer risk of more than 1200 patients with ischemic heart diseases (IHD) from diagnostic and therapeutic imaging procedures performed 3 month before and 12 month after the date of diagnosis. The major findings were:
MedicalResearch.com Interview with:
David Goldenberg MD, FACS
Professor of Surgery and Oncology
Director of Head and Neck Surgery
Associate Director of Surgical Services- Penn State Hershey Cancer Institute
Division of Otolaryngology-Head and Neck Surgery
The Pennsylvania State UniversityThe Milton S. Hershey Medical Center, Hershey, PA 17033
MedicalResearch.com: What are the main findings of this study?
Dr. Goldenberg: The incidence of thyroid cancer is on the rise and has nearly tripled in the last thirty years.
Some authors have attributed this increase in incidence to improved sensitivity of diagnostic techniques and imaging allowing for diagnosis of small insignificant thyroid cancers. Others do not agree and state that is a real rise in this disease.
Many patients have their cancer discovered by accident when they undergo a diagnostic study for some other reason- such as trauma, neck pain, or carotid artery studies (for clogged arteries).
We aimed to compare incidentally discovered versus non incidentally discovered thyroid cancers to determine whether the thyroid cancers in both groups harbor different characteristics.
MedicalResearch.com Interview with:
Dr. S. Wassertheil-Smoller PhD
Distinguished University Professor Emerita
Department of Epidemiology & Population Health
Principal Investigator, Women's Health Initiative
Albert Einstein College of Medicine |
1300 Morris Park Avenue Bronx, NY 10461
MedicalResearch.com: What are the main findings of the study?
Answer: We studied 7728 older women who developed invasive breast cancer during their participation in the Women’s Health Initiative, known as WHI. This study found that women with invasive breast cancer who are users of multivitamin and mineral supplements had a 30% lower risk of dying from their breast cancer compared to non-users. This protective effect was observed to be independent of a large number of factors which affect breast cancer outcomes and which account for differences between users and non-users. The women we studied were ages 50-79 when they started the WHI.
MedicalResearch.com Interview with: Hiroko Masuda MD
Morgan Welch Inflammatory Breast Cancer Research Program and Clinic; Departments of 2Breast Medical Oncology, 3Bioinformatics and Computational Biology The University of Texas MD Anderson Cancer Center, Houston, Texas;
W. Fraser Symmans, MD Anderson Cancer Center, Department of Pathology, Unit 85, 1515 Holcombe Blvd., Houston, TX 77030-4009;
Naoto T. Ueno, MD Anderson Cancer Center, 1515 Holcombe Blvd., Unit 1354, Houston, TX 77030.
MedicalResearch.com: What are the main findings of the study?
Answer: Triple-negative breast cancer (TNBC) could be classified into 7 subtypes: basal-like 1 (BL1), basal-like 2 (BL2), immunomodulatory (IM), mesenchymal (M),mesenchymal stem-like (MSL), luminal androgen receptor (LAR), and unstable (UNS). Using cluster analysis, Lehmann and Bauer et al. identified these TNBC subtypes in 21 public mRNA gene expression profiles of breast cancer. However, the clinical relevancy of these novel molecular subtypes has not been established. To establish the clinical relevancy, we determined if the subtypes of TNBC have different rates of pathological complete response (pCR) to standard neoadjuvant chemotherapy regimens. In this study, we confirmed that TNBC is heterogeneous and that pCR differs by TNBC subtype using the algorithm proposed by Lehmann and Bauer et al. The BL1 subtype had the highest pCR rate (52%), and BL2 and LAR had the lowest pCR rates (0% and 10%, respectively). TNBC subtype was an independent predictor of pCR status (P=0.022) via a likelihood ratio test. To our knowledge, this was the first study to show that the TNBC subtype can serve as an independent predictor of pCR status in patients who received standard chemotherapy regimens. This confirms the possible clinical relevance of the 7 molecular subtypes, and these subtypes may lead to innovative clinical trials of personalized medicine for patients with TNBC.
MedicalResearch.com Interview with
Susan Halabi, PhD
Duke University Medical Center
Durham, NC 27710
MedicalResearch.com: What are the main findings of the study?
Dr. Halabi: The purpose of assessing surrogate endpoints is to allow for a more rapid and efficient determination of whether a given therapy provides clinical benefit to patients by prolonging their life.
We sought to evaluate PSA kinetics as surrogate endpoints for overall survival (OS) in mCRPC patients who were receiving second line chemotherapy (cabazitaxel or mitoxantrone) following progression after docetaxel. Using different analytical approaches, we found that PSA declines within the first three months of treatment are not appropriate as surrogate markers of clinical benefit in men who were receiving second line chemotherapy.
This analysis has important clinical care and study design implications: it has become common to use ≥30% decline in PSA as a clinical trial endpoint for all patients with metastatic CRPC, based on the original front-line docetaxel data. The data presented in this study suggest that this is erroneous. Further we believe these data are important because they demonstrate that there are different disease states within the group of patients with “metastatic CRPC". To make the assumption that the same surrogate endpoint can be used across the board may seem like an obvious mistake, but permeates the literature.
MedicalResearch.com Interview with:
Dr. Elisabeth Jeppesen MPH, PhD-fellow
National Resource Center for Late Effects after Cancer Treatment, Department of Oncology, Oslo University, Hospital, The Norwegian Radiumhospitalet, Oslo, Norway
mobil +47 951 05271
Wisit: Ullernchaussen 70 (Radiumhospitalet)
www.oslo-universitetssykehus.no
MedicalResearch.com: What is the background of this study?
Answer: Each year a considerable number of parents with children younger than 18 years of age are affected by cancer in a parent. Cancer in one of the parents might represent a potentially traumatic event and thereby may be a risk factor for psychosocial problems in the offspring. So far, teenagers’ psychosocial responses to parental cancer have only been studied to a limited extent in controlled trials. Using a trauma theory perspective many studies have shown significant direct associations between parental cancer and psychosocial problems in teenagers. However, the literature also indicates that most children and teenagers have normal stress reactions to such events. In order to identify the need for eventual prevention and intervention among teenagers exposed to such a stressor, we need more empirical knowledge of their psychosocial situation.
MedicalResearch.com Interview with:
Anil K. Sood MD
Department of Gynecologic Oncology
The University of Texas MD Anderson Cancer Center
Unit 1362, PO Box 301439, Houston, TX, 77030
MedicalResearch.com: What are the main findings of the study?
Dr. Sood: For women with newly diagnosed ovarian cancer, high heart rate at diagnosis (tachycardia), venous thromboembolism (VTE) occurring after diagnosis and pulmonary hypertension post-diagnosis are independently related to reduced survival after controlling for tumor stage, grade, and extent of cytoreduction. Women with tachycardia lived an average of 4.0 years after diagnosis compared with 5.9 years for women without tachycardia, a 32% reduction in duration of survival. Patients who experienced VTE lived a median 4.1 years after diagnosis, compared with 6.4 yrs for patients who did not experience VTE.
MedicalResearch.com Interview with:
Kelly K. Hunt, MD F.A.C.S.
Professor, Department of Surgical Oncology, Division of Surgery
Chief, Breast Surgical Oncology Section, Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
MedicalResearch.com: What are the main findings of the study?
Dr. Hunt: We found that 40% of women who had node positive disease at initial presentation (confirmed by needle biopsy) had no evidence of residual cancer in the lymph nodes after chemotherapy.
We performed sentinel lymph node (SLN) surgery followed by axillary lymph node dissection in all of the patients and found a false negative rate of 12.6% with the SLN procedure.
The false negative rate was lower when surgeons used two mapping agents (blue dye and radioisotope) to identify the sentinel nodes and when they removed more than 2 sentinel nodes.