Walter Curran Jr., M.D., professor and chair of Radiation Oncology at Jefferson Medical College of Thomas Jefferson University and Jefferson’s Kimmel Cancer Center in Philadelphia, led one of six trials comparing the effectiveness of giving chemotherapy at the same time as radiation therapy versus giving radiation first, followed later by chemotherapy, to treat locally advanced non-small cell lung cancer (NSCLC).
According to Dr. Curran, there had been some controversy over whether simultaneous administration of chemotherapy and radiation for such cases was better than sequential delivery. In the United States, chemotherapy and radiation together have become the standard, whereas in other areas, such as Europe, for example, this has not been the case.
To try to resolve the matter, the International NSCLC Collaborative Group examined the results of more than 1,200 patients from six trials. The researchers found that the five-year survival rate was 10.6 percent with sequential therapy, while 15.1 percent with concurrent treatment. Dr. Curran presented the results recently at the meeting of the American Society for Therapeutic Radiology and Oncology in Los Angeles.
“That means a relative increase of nearly 50 percent,” notes Dr. Curran, who led the Radiation Therapy Oncology Group (a Philadelphia-based cooperative clinical trials organization) trial. “We’ve demonstrated that the magnitude of benefit is observable in many studies, regardless of the regimen. I think it will be as persuasive as any data that this will change not only the tumor control rate but the chance for a long-term cure.”
Dr. Curran explains that the only difference in the two treatments is that radiation is begun at another time. The drugs and radiation techniques are the same. “You’re changing the first day of radiation from day 40 to day one, for example, and as a result, are changing the number of five-year survivors by between 40 percent and 50 percent,” he says. According to these findings, theoretically, if there were 50,000 patients, approximately 5,000 who received sequential therapies would be alive in five years, and with concurrent, about 7,500.
“It is a new standard of care,” he says about the results. “It’s relatively broadly adopted in this country, but across the world, it hasn’t been. This will be a very persuasive argument.”
Steve Benowitz | EurekAlert!
New malaria analysis method reveals disease severity in minutes
14.08.2017 | University of British Columbia
New type of blood cells work as indicators of autoimmunity
14.08.2017 | Instituto de Medicina Molecular
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
18.08.2017 | Life Sciences
18.08.2017 | Physics and Astronomy
18.08.2017 | Materials Sciences