Author Interviews, Cancer Research, Genetic Research / 01.12.2020

MedicalResearch.com Interview with: Nina Bhardwaj MD PhD Director of Immunotherapy Tisch Cancer Institute Icahn School of Medicine at Mt Sinai Ward-Coleman Chair in Cancer Research Professor of Hematology and Oncology MedicalResearch.com: What is the background for this study? Response: Neoantigens are novel antigens expressed by tumors as a result of somatic mutations or frame shift mutations. They can be very immunogenic and consequently they are being incorporated into cancer vaccine platforms. In most cases it is necessary to determine each patient’s individual mutations and customize their vaccine antigens accordingly. We sought to identify shared mutations in cancer antigens which are deficient in DNA repair mechanisms namely microsatellite unstable tumors. These tumors have mutations in genes that normally are responsible for ensuring that DNA is properly replicated. Because these genes encode proteins that ensure proper repair around micro-satellite areas (which contain short repeated sequences of DNA and are present in similar regions from one person’s genome to the next), when they are mutated, these regions may not be repaired. Consequently due to nucleotide deletions and insertions one gets frame shift mutations which result in new protein expression which can be shared across tumors, as has been observed for a few regions. We therefore did a comprehensive study of a subset of tumors to determine the breadth of shared frame shift mutations. (more…)
Author Interviews, COVID -19 Coronavirus, Inflammation, JAMA, Pediatrics, Race/Ethnic Diversity / 30.11.2020

MedicalResearch.com Interview with: Ellen H. Lee, MD Incident Command System Surveillance and Epidemiology Section New York City Department of Health and Mental Hygiene Long Island City, New York  MedicalResearch.com: What is the background for this study? Response: Published reports of the COVID-19-associated multisystem inflammatory syndrome in children (MIS-C) have described higher proportions of cases among Black and Hispanic children. However, case series are limited by the lack of population-level data, which could help provide context for the racial/ethnic distribution of cases described in these reports. The New York City (NYC) Department of Health and Mental Hygiene required reporting of all possible cases of MIS-C among NYC residents, and for cases meeting MIS-C criteria, applied population denominators to calculate MIS-C incidence rates stratified by race/ethnicity. To help characterize the burden of severe COVID-19 disease in NYC, we also calculated COVID-19 hospitalization rates stratified by race/ethnicity. (more…)
AHA Journals, Author Interviews, Heart Disease, Women's Heart Health / 30.11.2020

MedicalResearch.com Interview with: Justin A. Ezekowitz, MBBCh, MSc Professor, Department of Medicine Co-Director, Canadian VIGOUR Centre Director, Cardiovascular Research, University of Alberta Cardiologist, Mazankowski Alberta Heart Institute MedicalResearch.com: What is the background for this study? What are the main findings? Are women older, sicker when they experience heart disease? Response: Previous research looking at sex-differences in heart health has often focused on recurrent heart attack or death, however, the vulnerability to heart failure between men and women after heart attack remains unclear. Our study includes all patients from an entire health system of over 4 million people and includes information not usually available in other analyses. Women were nearly a decade older and more often had a greater number of other medical conditions when they presented to hospital for their first heart attack, and were at greater risk for heart failure after the more severe type of heart attack (also known as a ST-elevation MI). This gap between men and women has started to narrow over time. (more…)
Author Interviews, Infections, OBGYNE, Pediatrics / 26.11.2020

MedicalResearch.com Interview with: Jessica Miller PhD Postdoc Fellow Murdoch Childrens Research Institute  MedicalResearch.com: What is the background for this study? Response: Cesarean section (CS) may be a lifesaving intervention for women and babies. However, the global proportion of CS births is rapidly increasing and may not be medically justified. As CS has implications for both mother and child, the increasing rates warrant population-level analyses of potential risks. Many suggested long-term outcomes in CS-born children relate to altered immune development. It is possible that differences in the newborn microbiome by mode of birth contribute to the development of early immune responses which may influence the risk of immune-related outcomes, including infection. CS has been associated with an increased risk for specific infection-related hospitalisations, mainly lower respiratory tract and gastrointestinal infections, but it remains unclear whether CS is associated with increased risk of overall infection-related hospitalisation or only certain infection types, and whether risk differs for emergency versus elective/pre-labour CS. (more…)
Author Interviews, Breast Cancer, Cancer Research, Chemotherapy, JAMA, Yale / 26.11.2020

MedicalResearch.com Interview with: Lajos Pusztai, M.D, D.Phil. Professor of Medicine Director, Breast Cancer Translational Research Co-Director, Yale Cancer Center Genetics and Genomics Program Yale Cancer Center Yale School of Medicine MedicalResearch.com: What is the background for this study? What are the main findings? Response: In HER2-positive early stage (stage I-II) breast cancer, several different preoperative (also called neoadjuvant) chemotherapy options exist, each of these is associated with a different rate of complete eradication of cancer from the breast and lymph nodes (called pathologic complete response or pCR). Patients who experience pCR have excellent long term survival. The complete response rates range from 20% to 80%, the rates are higher with regimens that include several different chemotherapy drugs and dual HER2 blockade. Unfortunately, these highly effective multi-drug treatment regimens are also more toxic and more expensive.  We also learned that patients who do not achieve pCR after preoperative therapy, have high rates of recurrence, but the recurrence rate can be improved by administering postoperative adjuvant therapy. These two observations together, (1) different regimens with different toxicities and costs resulting in different pCR rates, and (2) existence of effective postoperative therapies for patients with residual cancer after preoperative therapy, sets the stage for combining various pre- and post-operative treatment strategies. Starting with a shorter, less toxic and less expensive neoadjuvant regimen would allow a substantial minority (20-45%) of patients who archive pCR to be spared of longer and more toxic regimens, whereas those with residual disease could receive the remaining part of the currently most effective regimens post-operatively as adjuvant therapy. In this study we examined the cost effectiveness of different neoadjuvant followed by adjuvant treatment strategies from a healthcare payer perspective. (more…)
Accidents & Violence, Author Interviews, Pediatrics, Race/Ethnic Diversity / 26.11.2020

MedicalResearch.com Interview with: Dr. Monika K. Goyal, MD Associate Division Chief, Emergency Medicine Children’s National Hospital Department of Pediatrics, School of Medicine and Health Sciences The George Washington University Washington, District of Columbia MedicalResearch.com: What is the background for this study? Response: There has been growing attention to the disproportionate use of police force in communities of color. Therefore, we sought to investigate whether Black and Hispanic teenagers have higher rates of death due to police shootings when compared to white youth. (more…)
Author Interviews, Education, Pediatrics / 26.11.2020

MedicalResearch.com Interview with: Lukas D. Lopez Doctoral Candidate Psychological Sciences, Developmental Psychology University of California, Merced MedicalResearch.com: What is the background for this study? What are the main findings? Response: "This study is unique because it uses LENA recording devices which are small recording devices that infants wear in the pocket of a vest that record all infant babbles and caregiver responses in the home. We then had trained listeners annotate infant-adult vocal exchanges within sections of those recordings focusing on the specific types of sounds infants made and specific types of adult responses to those sounds. Using this combination of methods is distinctive because it allowed us to capture a more natural picture of a family's language environment in the home context, whereas most research on this topic is conducted in the laboratory. We then related this information to caregivers' reports of their infant's vocabulary. Our study finds that the caregivers who scaffold and elaborate on their infant’s babbling report that their infants can say more words." (more…)
Author Interviews, Heart Disease, JAMA, Pediatrics, Surgical Research / 25.11.2020

MedicalResearch.com Interview with: Michael R. Flaherty, DO Attending, Pediatric Critical Care Medicine Co-Director, Trauma and Injury Prevention Outreach Program, MGH Instructor in Pediatrics, Harvard Medical School Boston, MA 02114 MedicalResearch.com: What is the background for this study? What are the main findings?   Response: This study was a joint collaboration between Massachusetts General Hospital and Boston Children’s Hospital. The Consumer Product Safety Commission (CPSC) found an increasing incidence of rare earth magnet ingestions by children causing serious injury; Injuries are particularly serious when a child ingests two of these small magnets, or a magnet with another metal object – this can lead to bowel walls becoming attached and kinked, leading to catastrophic bowel injury and/or death. The Consumer Product Safety Commission initiated campaigns to limit sales in 2012 with voluntary recalls and safety standards, as well as public awareness campaigns, legislative advocacy, and lawsuits. In October 2014, the CPSC published their final rule, “Safety Standard for Magnet Sets,” which prohibited the sale of magnets based on a pre-specified size and power scale, essentially eliminating the ability to sell SREMs. This rule was appealed by largest manufacturer of these magnets, Zen Magnets, LLC., and in November 2016 this rule was legally reversed by the U.S. Court of Appeals Tenth Circuit resulting in a resurgence of these magnets on the market. (more…)
Author Interviews / 24.11.2020

MedicalResearch.com Interview with: Ventura Simonovich Jefe. Sección Farmacología Clínica. Servicio de Clínica Médica Coordinador Operativo. Investigación Patrocinada. Departamento de Investigación Hospital Italiano de Buenos Aires Vicepresidente. Asociación Argentina de Farmacología Experimental (AAFE) MedicalResearch.com: What is the background for this study? What are the main findings? Response: The convalescent plasma is something that was used almost since the beginning of this pandemic, but all the information came at the beginning from cohort studies. We decided to run this trial to evaluate the efficacy of the convalescent plasma in patients with severe Covid 19 pneumonia, which was the main indication in our country. Our findings show that convalescent plasma is equal to placebo except in patients younger than 65, in that population placebo is better than plasma.  (more…)
Author Interviews, Brigham & Women's - Harvard, Cancer Research, Genetic Research, Melanoma, Prostate Cancer / 23.11.2020

MedicalResearch.com Interview with: Saud H AlDubayan, M.D. Instructor in Medicine, Harvard Medical School Attending Physician, Division of Genetics, Brigham and Women's Hospital Computational Biologist, Department of Medical Oncology, Dana-Farber Cancer Institute Associate Scientist, The Broad Institute of MIT and Harvard  MedicalResearch.com: What is the background for this study? What are the main findings? Response: The overall goal of this study was to assess the performance of the standard method currently used to detect germline (inhered) genetic variants in cancer patients and whether we could use recent advances in machine learning techniques to further improve the detection rate of clinically relevant genetic alterations. To investigate this possibility, we performed a head to head comparison between the current gold-standard method for germline analysis that has been universally used in clinical and research laboratories and a new deep learning analysis approach using germline genetic data of thousands of patients with prostate cancer or melanoma. This analysis showed that across all different gene sets that were tested, the deep learning-based framework was able to identify additional cancer patients with clinically relevant germline variants that went undetected by the standard method. For example, several patients in our study also had germline variants that are associated with an increased risk of ovarian cancer, for which the surgical removal of the ovaries (at a certain age) is highly recommended. However, these genetic alterations were only identified by the proposed deep learning framework.     (more…)
Aging, Author Interviews, Genetic Research, McGill / 22.11.2020

MedicalResearch.com Interview with: Richard C. Austin, PhD Professor and Career Investigator of the Heart and Stroke Foundation of Ontario Amgen Canada Research Chair in Nephrology McMaster University and St. Joseph’s Healthcare Hamilton, Ontario, Canada MedicalResearch.com: What is the background for this study? What are the main findings? Response: A previous study published in 2011 by my collaborator, Dr. Michel Chretien at the IRCM, identified a rare mutation in the PCSK9, termed Q152H. Individuals harboring this mutation demonstrated dramatic reductions in their LDL cholesterol levels and had a significantly lower risk of CVD. Furthermore, individuals harboring the Q152H mutation showed increases in longevity with no evidence of other diseases such as liver disease, cancer and chronic kidney disease. This Q152H mutation was unique with only 4 families in Quebec shown to harbor this genetic variant. In terms of its effect on PCSK9 expression/activity, the mutation at Q152H was precisely at the cleavage site in PCSK9 necessary for its activation. As a result, the Q152H mutation fails to be cleaved and activated, thereby blocking its secretion into the circulation. This is why the Q152H mutation is considered a loss-of-function PCSK9 mutant. Given our lab's interest in endoplasmic reticulum (ER) stress and ER storage diseases, we began to collaborate with Drs. Chretien and Seidah at the IRCM to investigate whether this Q152H mutant, when overexpressed in liver cells, would cause ER stress and liver cell injury. This was based on the findings that the Q152H mutant does not undergo autocatalytic cleavage and its subsequent secretion from liver cells. It is well known in the literature that the accumulation of misfolded or inactive proteins in the ER gives rise to ER stress and cell injury/dysfunction. As a result, we initially showed to our surprise that overexpression of the Q152H mutant in liver cells failed to cause ER stress BUT increased the protein levels of several important ER chaperones, GRP78 and GRP94, known to PROTECT against liver cell injury/dysfunction. As part of our JCI study, we furthered these studies to examine the effect of the Q152H mutant when overexpressed in the livers of mice. This is where we demonstrated that the Q152H mutation showed protection against ER stress-induced liver injury/dysfunction. (more…)
Author Interviews, Dermatology, Genetic Research / 20.11.2020

MedicalResearch.com Interview with: Jillian F. Rork, MD Assistant Professor of Dermatology Dartmouth-Hitchcock Medical Center at Manchester and The Geisel School of Medicine Society for Pediatric Dermatology Member MedicalResearch.com: What is the background for this study? Would you briefly explain the genetic condition of Down syndrome? Response:  Down syndrome is the most common chromosomal abnormality, occurring in approximately 1 in 700 newborns in the United States.  Trisomy of chromosome 21 can result in multisystem involvement such as hearing loss, heart defects, autoimmune conditions and dementia. This study focuses on how trisomy 21 affects one of the body’s largest organs, the skin. Current literature addressing dermatologic conditions associated with Down syndrome is limited. There is often emphasis on rare skin conditions such as elastosis perforans serpiginosa, milia-like idiopathic calcinosis cutis, and eruptive syringomas. There is lack of consensus on incidence of more common disorders. We performed a retrospective chart review of 101 patients with Down syndrome in our dermatology practice at the University of Massachusetts to better describe associated skin conditions. (more…)
Author Interviews, Dermatology, Genetic Research, Melanoma / 19.11.2020

MedicalResearch.com Interview with: Sarah I. Estrada, M.D., FCAP  Laboratory Director Affiliated Dermatology® www.affderm.com MedicalResearch.com: What is the background for this study? What are the main findings? Response: As a dermatopathologist who makes diagnoses on lesions that may be melanoma, I’m faced with the reality that my accurate interpretation of biopsy tissue is key for the patient to be treated most effectively. Often histopathological evaluation is straightforward but not as often as I would like. The study presented here offers a new test that can be used in conjunction with my evaluation to determine if a questionable lesion is in fact melanoma. The test was developed to take into account the gene expression of the lesion which may factor in characteristics that I cannot visually observe. The test was validated and has shown very promising accuracy metrics. (more…)
Author Interviews, Blood Pressure - Hypertension, Heart Disease, Pediatrics, USPSTF / 19.11.2020

MedicalResearch.com Interview with: Martha Kubik, Ph.D., R.N. Professor and director of the School of Nursing College of Health and Human Services at George Mason University USPSTF Task Force Member MedicalResearch.com: What is the background for this study? What are the main findings? Has the recommendation changed over the last decade? Response: High blood pressure is becoming more common among children and teens in the United States and can have serious negative health effects in childhood and adulthood, such as kidney and heart disease. However, there is not enough research to know whether treating high blood pressure in young people improves cardiovascular health in adulthood. The Task Force continued to find that there is not enough evidence to recommend for or against screening for high blood pressure in children and teens who do not have signs or symptoms. (more…)
AHA Journals, Author Interviews, COVID -19 Coronavirus, Race/Ethnic Diversity, Stanford / 19.11.2020

MedicalResearch.com Interview with: Fatima Rodriguez, MD, MPH, FACC, FAHA Assistant Professor, Cardiovascular Medicine Stanford University School of Medicine Palo Alto, CA 94304 MedicalResearch.com: What is the background for this study? Response: The COVID-19 pandemic has magnified existing racial/ethnic disparities in the United States. The goal of this study was to leverage new data collected from the American Heart Association’s COVID-19 Cardiovascular Disease Registry to understand racial/ethnic differences in presentation and outcomes for hospitalized patients. (more…)
Author Interviews, BMJ, Brigham & Women's - Harvard, Fertility, OBGYNE / 19.11.2020

MedicalResearch.com Interview with: Jennifer Yland Doctoral Student in Epidemiology Harvard T.H. Chan School of Public Health MedicalResearch.com: What is the background for this study? Response: Worldwide, about 22% of reproductive-aged women used hormonal contraception last year. Long-acting reversible contraceptive (LARC) methods, which include intrauterine devices (IUDs), implants, patches, and injectable contraceptives, have become increasingly popular. However, little is known about the return to fertility after use of different contraceptives, particularly LARC methods. (more…)
Alzheimer's - Dementia, Author Interviews, Lipids, Mental Health Research, Microbiome / 18.11.2020

MedicalResearch.com Interview with: Moira Marizzoni, PhD Researcher, Fatebenefratelli Center in Brescia  MedicalResearch.com: What is the background for this study? Response: Alzheimer’s disease is the most common cause of dementia. Still incurable, it directly affects nearly one million people in Europe, and indirectly millions of family members as well as society as a whole. The gut microbiota could play a role in brain diseases including Alzheimer’s disease. Some gut bacteria components or products can reach the brain via the blood and might promote brain amyloidosis (one of the main pathological features in Alzheimer’s disease).   MedicalResearch.com: What are the main findings?  Response: This study evaluated a cohort of 89 people between 65 and 85 years of age composed of subjects suffering from Alzheimer’s disease or other neurodegenerative diseases causing similar memory problems, and of subjects with no memory problems. The study revealed that elevated levels of microbiota-products with known pro-inflammatory properties (i.e. lipopolysaccharides and the short chain fatty acids acetate and valerate) were associated with greater cerebral amyloid pathology while elevated levels of those with anti-inflammatory properties (i.e. the short chain fatty acid butyrate) were associated with lower amyloid pathology. (more…)
Author Interviews, Orthopedics, Radiology, Rheumatology, UCSF, Weight Research / 18.11.2020

MedicalResearch.com Interview with: Silvia Schirò MD Department of Radiology and Biomedical Imaging University of California, San Francisco MedicalResearch.com: What is the background for this study?  Response: Knee osteoarthritis (OA) is worldwide the second most frequent cause of lower extremity disability, and it has a global incidence of 199 cases per 100.000, including over 14 million people with symptomatic knee OA in the US. Overweight and obese individuals have a higher incidence of knee OA due to excessive knee joint load. The association between physical activity and knee OA, has not been systematically addressed in overweight and/or obese subjects and its association seems to be controversial. On the one hand, mild to non-weight-bearing physical activities have been found to be beneficial in the management knee homeostasis, the physiologic knee joint load providing an optimized environment for the joint tissues. On the other hand, excessive fast-paced physical activity with high load-joint torsion such as racquet sports, ball sports and running have been found to have an increased incidence of knee injury compared to mild-moderate exercise such as swimming, bicycling and low-impact aerobics independent of body weight. (more…)
Author Interviews, Brigham & Women's - Harvard, JAMA, Prostate Cancer, Social Issues / 18.11.2020

MedicalResearch.com Interview with: David-Dan Nguyen, MPH Research Fellow | Center for Surgery and Public Health Brigham and Women's Hospital Medical Student | McGill University  MedicalResearch.com: What is the background for this study? Response: In 2017, the US Preventive Services Task Force updated its recommendation for PSA screening for prostate cancer from a grade D to a grade C for men aged 55 to 69 years. This updated recommendation endorsed shared decision making and harmonizes with the guidelines of the American Urological Association and the American Cancer Society which also recommend shared decision making for PSA screening. Shared decision making is a meaningful dialogue between the physician and the patient that namely includes a review of risks and expected outcomes of screening as well as the patient’s preferences and values. Understandably, the patient’s ability to critically assess the medical information provided (i.e. their health literacy) likely influences this process. We sought to characterize the effect of health literacy on shared decision making for PSA screening. We used data from 2016 when PSA screening for prostate cancer was not recommended by the US Preventive Services Task Force — in other words, we also sought to understand how health literacy impacted screening rates in the context of countervailing guidelines on PSA screening. (more…)
Author Interviews, Brain Injury, Exercise - Fitness, JAMA / 17.11.2020

MedicalResearch.com Interview with: Tara L Sharma DO Clinical Assistant Professor of Neurology at UWMC Seattle, WA 98133 MedicalResearch.com: What is the background for this study? What are the main findings? Response: Flying can lead to reduced oxygen partial pressures and cerebral blood flow causing worsening clinical outcome in cases of moderate to severe TBI; however, not much is known regarding the clinical consequences of flying in individuals with concussion or mild TBI. Because many athletes suffer concussions during games, it is necessary to know if flying afterward may potentially hinder their ability to return to play. Overall, we found no associated between air travel and increased symptom severity in both our entire cohort and the subset of football players. (more…)
AHA Journals, Author Interviews, Heart Disease, University of Michigan / 17.11.2020

MedicalResearch.com Interview with: Sara Saberi, MD, MS Assistant Professor Inherited Cardiomyopathy Program Frankel Cardiovascular Center University of Michigan Hospital Michigan Medicine MedicalResearch.com: What is the background for this study? Would you briefly explain what is meant by HCM? How common is it and whom does it affect? Response: HCM is short for hypertrophic cardiomyopathy, the most common genetic myocardial disorder. It occurs in 1:500 people worldwide and because it is inherited in an autosomal dominant fashion, it affects men and women equally. HCM is characterized by unexplained left ventricular (LV) hypertrophy, hypercontractility, myofibrillar disarray and myocardial fibrosis with associated abnormalities in LV compliance and diastolic function. In some patients, there is progressive adverse cardiac remodeling, associated with chronic heart failure and atrial fibrillation as a result of diastolic dysfunction, left ventricular outflow tract (LVOT) obstruction, or less commonly, LV systolic dysfunction. Current medical management of obstructive HCM (oHCM) is limited to the use of beta blockers and non-dihydropyridine calcium channel blockers, or disopyramide, none of which have been shown to modify disease expression or outcomes after onset. Mavacamten is a first-in-class, small molecule, selective inhibitor of cardiac myosin specifically developed to target the underlying pathophysiology of HCM by reducing actin–myosin cross-bridge formation. The phase 3 EXPLORER-HCM trial showed that mavacamten improved exercise capacity, LVOT gradients, symptoms, and health status compared with placebo in patients with symptomatic oHCM. At selected study sites, participants were enrolled in a cardiac magnetic resonance (CMR) imaging substudy. CMR is the gold standard for measurement of ventricular mass, volumes and noninvasive tissue characterization, making it an ideal imaging modality to assess the effect of mavacamten on cardiac structure and function in patients with HCM. (more…)
Author Interviews / 17.11.2020

MedicalResearch.com Interview with: Franco Vazza. PhD Associate Professor. Department of Physics and Astronomy University of Bologna, Italy MedicalResearch.com: What is the background for this study? Response: We are an astrophysicist and a neurosurgeon, and we realised we had access, from our disciplines, to quantitative datasets to test the (long lived) idea that the two systems are very similar. So we designed simple experiments in which we can analyse both systems in an homogenous way. MedicalResearch.com: What are the main findings? Response:  If this work has any value, this is probably to be searched into the way it exposes the way in which such different systems (indeed sitting at the opposite extremes of cosmic scales) may evolve according to similar “macro” laws , i.e. not newer physical laws in any sense, but complex ways in which physical laws combine to evolve macro objects, or in this case networks of event. We hope this will trigger new research in this sense in the near future!  (more…)
Author Interviews, COVID -19 Coronavirus, Heart Disease / 17.11.2020

MedicalResearch.com Interview with: Benjamin D. Horne, PhD Cardiovascular and Genetic Epidemiologist Intermoumtain Health MedicalResearch.com: What is the background for this study? Response: The Intermountain Mortality Risk Score (IMRS) is a risk prediction tool developed in 2009 and repeatedly validated over the last decade to predict death, major adverse health events such as heart attack and stroke, and the onset of major chronic diseases. IMRS is computed using sex-specific weightings of parameters from the complete blood count (CBC) and basic metabolic profile (BMP), and age. The CBC and BMP are commonly-ordered clinical laboratory panels that include hemoglobin, white blood cell count, glucose, creatinine, sodium, calcium, and other factors whose testing is standardized and the results are objective and quantitative with no need to know what diagnoses a patient may have. IMRS is known to be a superior predictor of death compared to comorbidity-based risk scores and has been found to predict health outcomes in people with no chronic disease diagnoses as well as patients with coronary heart disease, atrial fibrillation, heart failure, chronic obstructive pulmonary disease, chronic kidney disease, and various other diagnoses. IMRS has not been evaluated as a predictor of health outcomes for people with COVID-19, but if it does it could be useful for people to use to evaluate their own risk of poor outcomes if they are infected with SARS-CoV-2, for clinical personnel to guide the care of patients with COVID-19, and for public health professionals to use to determine who among those never diagnosed with COVID-19 is at higher risk of poor health outcomes and should be the first to receive a COVID-19 immunization.  (more…)
Author Interviews, Heart Disease, JACC / 17.11.2020

MedicalResearch.com Interview with: Simon Winther, MD, PhD Associate professor Department of Cardiology, Gødstrup Hospital Herning, Denmark MedicalResearch.com: What is the background for this study? What are the main findings? Response: Both European and American guidelines have traditionally recommended estimating the pre-test probability (PTP) of CAD based on the classic Diamond-Forrester approach using sex, age, and type of chest complaints. However, The European Society of Cardiology (ESC) has recently suggested a novel concept of Clinical Likelihood of CAD as a more comprehensive assessment of CAD probability but no strategy has been proposed. I this study, we improve the estimation of the likelihood of obstructive coronary artery disease (CAD) by combining the classic pre-test probability model (Diamond–Forrester approach using sex, age, and symptoms) with clinical risk factors and coronary artery calcium score in symptomatic patients with suspected CAD. Hence, we propose a simple clinical tool for the individual estimation of clinical likelihood of CAD. The tool was developed by stepwise simplification of advanced machine learning models without significant loss of accuracy and the model were validated the both European and North American cohorts.  (more…)
Allergies, Author Interviews, Dermatology / 17.11.2020

MedicalResearch.com Interview with: Yashu Dhamija MD Dr. Thomas Schmidlin, MD Cleveland Clinic Akron General  MedicalResearch.com: What is the background for this study? Response: We are seeing an increased use of face masks in the COVID-19 pandemic and while that is encouraged and necessary to limit the spread of disease in the general publication, it can mean challenges for some individuals. Patients with known sensitizations to allergens contained in face masks may experience rash or irritation with commonly used face coverings. It is also possible for patients without a history of contact dermatitis to become sensitized to allergens after wearing facial coverings more regularly, thus leading to new cases of contact dermatitis (CD) in individuals with no known prior history of contact dermatitis. (more…)
Author Interviews, Brigham & Women's - Harvard, Dermatology, JAMA, McGill, Mental Health Research / 17.11.2020

Editor's note: This piece discusses suicide. If you have experienced suicidal thoughts or have lost someone to suicide and want to seek help, you can contact the Crisis Text Line by texting "START" to 741-741 or call the Suicide Prevention Lifeline at 800-273-8255.  MedicalResearch.com Interview with: David-Dan Nguyen, MPH Research Fellow | Center for Surgery and Public Health, Brigham and Women's Hospital Medical Student | McGill University MedicalResearch.com: What is the background for this study? Response: There is ongoing concern about the side-effects of finasteride, a drug used for the management of alopecia and benign prostatic hyperplasia. These concerns have led to the coining of the “post-finasteride syndrome” which remains controversial. Indeed, there is conflicting evidence on the post-finasteride syndrome/adverse events associated with finasteride. We wanted to contribute to this conflicting body of evidence by examining suicidality, depression, and anxiety reports linked to finasteride use using the WHO’s pharmacovigilance database, VigiBase. Such pharmacovigilance databases are useful for the study of rare adverse events that are suspected to be associated with medication use. (more…)
Author Interviews, Melanoma, Vaccine Studies / 16.11.2020

MedicalResearch.com Interview with: Nina Bhardwaj MD, PhD Professor of Medicine (Hematology and Medical Oncology) and Urology Tisch Cancer Institute Icahn School of Medicine at Mount Sinai New York, NY MedicalResearch.com: What is the background for this study? What types of cancer may be amenable to this vaccine? Response: The goal was to determine if vaccine responses could be improved by increasing special white cell numbers, namely dendritic cells, which are key for jumpstarting an immune response. MedicalResearch.com: What are the main findings?  Response: We found that the agent flt3-L mobilized these dendritic cells which help to improve the vaccine’s ability to prime the immune system.  (more…)
Author Interviews, COVID -19 Coronavirus, Occupational Health / 16.11.2020

MedicalResearch.com Interview with: Emily Barrett, PhD Associate Professor Department of Biostatistics and Epidemiology Rutgers School of Public Health MedicalResearch.com: What is the background for this study? Response: We started this study in the very early stages of the pandemic to look at SARS-CoV-2 viral transmission and disease severity in health care workers as compared to non-health care workers.  There was a tremendous amount of fear and uncertainty about the virus and the early anecdotal reports coming out of China and Italy highlighted the plight of many frontline health care workers who had been infected on the job. We knew that our U.S. health care workers would soon be facing this tremendous challenge. We started this study to examine risks of infection in our vulnerable frontline health care workers and a comparison group of non-health care workers. Our results are from the early stages of the U.S. pandemic in March-April 2020. (more…)
Author Interviews, Genetic Research / 16.11.2020

MedicalResearch.com Interview with: Philippe M Soriano, PhD Professor,  Cell, Developmental & Regenerative Biology and Oncological Sciences Icahn School of Medicine at Mount Sinai MedicalResearch.com: What is the background for this study? Response: The study was performed primarily to help understand how signals sent from growth factors to their receptors on the cell surface (see reply to the following question) initiate a cascade of events within the cells that lead to proliferation, survival, or other biological responses. This is important to know because deregulation of many of these pathways can lead to cancers. MedicalResearch.com: Would you explain what is meant by FGFs and their interaction with RTKs? Response: FGFs are cell signaling proteins that are also known as growth factors because they often lead to cell proliferation. They act by binding to receptors on the cell surface that are part of a family of receptor tyrosine kinases (RTKs). These RTKs are transmembrane proteins that have a domain outside of the cell that binds to the growth factor and a domain within the cell that has tyrosine kinase activity, hence the name “receptor tyrosine kinase (RTK).” This enzymatic activity adds a phosphate to a tyrosine residue of target proteins and starts a typical signal transduction pathway (referred to in the paper as “canonical”) leading to the usual biological responses (proliferation, survival, migration, etc.) (more…)
Author Interviews, Cancer Research, JAMA, Prostate Cancer, Technology / 13.11.2020

MedicalResearch.com Interview with: Dave Steiner MD PhD Clinical Research Scientist Google Health, Palo Alto, California MedicalResearch.com: What is the background for this study? Response: For prostate cancer patients, the grading of cancer in prostate biopsies by pathologists is central to risk stratification and treatment decisions. However, the grading process can be subjective, often resulting in variability among pathologists. This variability can complicate diagnostic and treatment decisions. As an initial step towards addressing this problem, we and others in the field have recently developed artificial intelligence (AI) algorithms that perform on-par with expert pathologists for prostate cancer grading. Such algorithms have the potential to improve the quality and efficiency of prostate biopsy grading, but the impact of these algorithms when used by pathologists has not been well studied. In the current study, we developed and evaluated an AI-based assistant tool for use by pathologists while reviewing prostate biopsies. (more…)