Breaking News
August 16, 2018 - Ablating the mutant p53 gene in mice with colorectal cancer inhibits tumor growth
August 16, 2018 - Higher BMI in people with prediabetes related to evening preference and lack of sufficient sleep
August 16, 2018 - Using peripheral nerve blocks to treat facial pain may produce long-term pain relief
August 16, 2018 - Neural stem cells are the key to tail regeneration
August 16, 2018 - Study compares genetic and neural contributions to ADHD in children with or without TBI
August 16, 2018 - Adding energy drinks to alcohol may exacerbate negative effects of binge drinking
August 16, 2018 - Eye Examination Can Help Detect Abuse in Children
August 16, 2018 - Know the Difference: Rheumatoid Arthritis or Osteoarthritis?
August 16, 2018 - From ‘sea of mutations,’ two possible cancer links rise to the surface
August 16, 2018 - Does medical school take too long?
August 16, 2018 - Brown University researchers reveal key physical properties of ‘giant’ cancer cells
August 16, 2018 - Regular resistance training improves exercise motivation
August 16, 2018 - Feds urge states to encourage cheaper plans off the exchanges
August 16, 2018 - Seven activities that prevent you from getting quality sleep during summer
August 16, 2018 - Five ways to tell if your baby is getting enough milk from breastfeeding
August 16, 2018 - From Pigs to Peacocks, What’s Up With Those ‘Emotional-Support Animals’?
August 16, 2018 - Breast cancers enlist the help of normal cells to help them spread and survive
August 16, 2018 - Engaging with “high-need” patients outside the clinic
August 16, 2018 - Research illuminates how online forum may offer suicide prevention support for males
August 16, 2018 - Researchers identify way to grow immune cells at large scale for preventing cancer reoccurrence
August 15, 2018 - Keck Medicine of USC’s hospitals ranked among nation’s best for the 10th consecutive year
August 15, 2018 - Researchers compare existing approaches for automating diagnostic procedures of skin lesions
August 15, 2018 - Autism risk determined by health of mom’s gut, research reveals
August 15, 2018 - WELL for Life challenges you to explore the great outdoors
August 15, 2018 - ‘Zombie’ gene protects elephants from cancer, study finds
August 15, 2018 - Ebola outbreak in Congo spreads to active combat zone
August 15, 2018 - Study highlights pollution exposure of babies in prams
August 15, 2018 - Study provides insight into link between sleep apnea and lipid metabolism
August 15, 2018 - New study focuses on promise of gene therapy for Amish nemaline myopathy
August 15, 2018 - Researchers discover new approach to alleviate chronic itch
August 15, 2018 - Uncovering the Mysteries of MS: Medical Imaging Helps NIH Researchers Understand the Tricky Disease
August 15, 2018 - Autistic people at greater risk of becoming homeless – new research
August 15, 2018 - New imaging technique can spot tuberculosis infection in an hour
August 15, 2018 - Scientists study effects of eating breakfast versus fasting overnight before exercise
August 15, 2018 - Talking with children about suicide could save lives
August 15, 2018 - Grip strength of children predicts future cardiometabolic health
August 15, 2018 - Innovative oncofertility program launched by RMA of New York and Mount Sinai Health System
August 15, 2018 - Study shows efficacy, safety of AAV5-based gene therapy to treat sheep model of achromatopsia
August 15, 2018 - Simple score helps predict which hospitalized heart attack patients are at high risk of readmissions
August 15, 2018 - New discoveries show how protein droplets do more than keep cells’ interiors tidy
August 15, 2018 - Study shows impact of optimizing airport flight patterns on human health
August 15, 2018 - Life experiences of feeling unwanted or unplanned associated with attachment insecurity
August 15, 2018 - ACS Briefing Discusses Use of Lessons From Combat Care
August 15, 2018 - Study identifies distinct origin of ADHD in children with history of brain injury
August 15, 2018 - IgG3 antibody stops B cells from fighting pathogens in HIV patients
August 15, 2018 - Scientists discover key vulnerability of mixed lineage leukemia
August 15, 2018 - College students may experience pressures from secondary exposure to opioid abuse
August 15, 2018 - Powerful new microscope reveals inner workings of human cells with unprecedented clarity
August 15, 2018 - Married people who fight nastily more likely to suffer from leaky guts, study suggests
August 15, 2018 - Working Out After Baby – Drugs.com MedNews
August 15, 2018 - Rheumatoid Factor (RF) Test: MedlinePlus Lab Test Information
August 15, 2018 - ADHD linked to an increased risk of injury in children, study finds
August 15, 2018 - UIC researchers receive NIH funding to develop a better way to regenerate bone or tissues
August 15, 2018 - Study reveals how immune cells in the brain influence sexual behavior
August 15, 2018 - Researchers move closer to finding potential soft spot in drug-resistant tuberculosis
August 15, 2018 - Real-time dynamic monitoring of cell’s nucleus for effective cancer screening
August 15, 2018 - Lower rates of Medicare preventive care visits found in racial, ethnic minority older adults
August 15, 2018 - Scientists identify stress hormone as key factor in failure of immune system to inhibit leukemia
August 15, 2018 - Cytoplan introduces three new nutritional supplements
August 15, 2018 - Effective hemorrhage control critical for survival after motorsport accidents
August 15, 2018 - Sygnature Discovery announces ambitious expansion plan with addition of Alderley Park facility
August 15, 2018 - Dietary carbohydrates could lead to osteoarthritis, new study finds
August 15, 2018 - Male tobacco smokers have decreased number of cannabinoid CB1 receptors, study reveals
August 15, 2018 - Scientists explore ways for drug therapies to reach deadly brain tumors
August 15, 2018 - Rethinking fundamental rule of stroke care: ‘Time is brain!’
August 15, 2018 - Scientists reveal role of ‘junk DNA’ in cancer dissemination
August 15, 2018 - Google’s DeepMind AI could soon be diagnosing eye conditions
August 15, 2018 - Scientists trick the brain to embody the prosthetic limb
August 15, 2018 - Researchers focus on uncoupling obesity from diabetes
August 15, 2018 - Clinical study shows how EarlySense system effectively detects opioid-induced respiratory depression
August 15, 2018 - A class of proteins shown to be effective in reducing drug-seeking behaviors
August 15, 2018 - FundamentalVR launches first-of-its-kind SaaS software platform for surgical simulation
August 15, 2018 - Gemphire Announces Termination of Phase 2a Clinical Trial of Gemcabene in Pediatric NAFLD
August 15, 2018 - Rheumatoid arthritis in pregnancy associated with low birth weight and premature birth
August 15, 2018 - Study may help increase effectiveness of antibiotics against drug-resistant bacteria
August 15, 2018 - Analyzing resident-to-resident incidents in dementia may hold the key to reducing future fatalities
August 15, 2018 - Robotic walking frame aims to help maintain mobility of older adults
August 15, 2018 - Simple intervention during routine care reduces alcohol consumption in men with HIV
August 15, 2018 - Genetics Home Reference: gout
August 15, 2018 - Scientists ID genesis of disease, focus efforts on shape-shifting tau
Researchers evaluate accuracy of simple blood test to predict lung cancer

Researchers evaluate accuracy of simple blood test to predict lung cancer

image_pdfDownload PDFimage_print

Every year, health care providers in the United States discover more than 1.6 million lung nodules in patients. Many are “incidentally detected,” meaning they are found during evaluation for an unrelated cause (for example, a chest X-ray after a fall). Although 75 to 85 percent of these incidentally detected nodules turn out to be benign, they can pose a diagnostic dilemma for providers.

Patients with high-risk nodules may require more invasive testing such as biopsy or even surgery to remove the nodule. However, when there’s a low-to-moderate probability of cancer — anywhere from 5 to 65 percent — providers may debate who should be monitored with serial PET or CT scans and who should undergo potentially complex diagnostic tests.

Recently, researchers at the Medical University of South Carolina (MUSC) participated in a multicenter clinical trial to evaluate the accuracy of a blood test, or “biomarker,” that measures the levels of two proteins in a patient’s plasma, LG3BP and C163A, integrated with clinical predictors of cancer, such as age, size of the nodule and other nodule characteristics. These proteins are common predictors of lung cancer. In the study, the biomarker was 98 percent effective at distinguishing benign from malignant nodules.

Gerard A. Silvestri, M.D., M.S., a lung cancer pulmonologist at the MUSC Hollings Cancer Center who holds the George C. and Margaret M. Hillenbrand Endowed Chair in thoracic oncology, led the study. Results were reported in an article published online in the journal Chest on March 1, 2018.

The biomarker works like this: If a patient has less than a 50 percent chance of having cancer and the test result is negative for the integrated classifier, it’s likely not cancer. The biomarker can offer the provider confidence in a diagnosis and treatment plan.

“It serves as a ‘rule out’ test for those with low-to-moderate risk,” says Silvestri. “The biomarker is a tool to help calculate the general risk of cancer and present a patient with recommendations and options. It can push people out of indeterminate risk and into low-risk — without having to undergo invasive and potential risky procedures.”

Biopsies and surgeries can be complicated in an organ as delicate as the lung.

“Think of your lung as a two-liter bottle of soda, and the nodule as a pea in the center of it,” explains Silvestri. “During a biopsy, for example, the lung could collapse and need a tube to expand it. Our goals for this biomarker are to help calculate the risk of cancer, present the patient with options and recommendations and avoid subjecting patients with benign disease to expensive, unnecessary and intrusive procedures.”

Even if biomarker results are negative, patients will need ongoing CT scans to monitor a lung nodule. “A low-risk tumor will be followed with serial imaging. After two years of CT scans being performed periodically and without evidence of growth, we can say it’s benign,” Silvestri says.

This research is part of the Pulmonary Nodule Plasma Proteomic Classifier (PANOPTIC) study, a clinical trial of 685 patients 40 years old or older, with newly discovered lung nodules 8 to 30 millimeters in diameter as shown on a recent (fewer than 60 days old) CT scan.

If the biomarker’s results in the PANOPTIC study had been used to direct care (they were not), 40 percent fewer procedures would have been performed on patients with benign nodules. The next step in bringing this test to the clinic would be to conduct a “clinical utility” study to show how using this biomarker might affect physician and patient behavior.

“Anything to provide physicians with more confidence in how they would manage patients would be helpful,” Silvestri says. “The goal of this research, and other research like this, is to quickly evaluate and treat patients with cancerous nodules, while never exposing patients who don’t have cancer to invasive costly and sometimes risky procedures.”

Tagged with:

About author

Related Articles