Chemotherapy is the best broad defense against cancer recurrence after surgical resection.
However, it is difficult to predict which patients will benefit from which regimen of anticancer drugs, if at all. Building on existing knowledge, a study published in the September edition of the Journal of Thoracic Oncology (JTO), analyzed the usefulness of adjuvant chemotherapy for non-small cell lung cancer (NSCLC) based on the histoculture drug response assay (HDRA).
After seven years of study, researchers concluded that the use of adjuvant (post-operative) chemotherapy based on results of the in vitro HDRA improved the survival and prognosis of patients with NSCLC who had undergone surgery and whose results of the HDRA assay showed chemosensitivity to the specific drugs used for treatment.
The patients' chemosensitivity to cisplatin, carboplatin, paclitaxel, docetaxel, gemcitabine and irinotecan were examined by the HDRA assay. The patients in the study were then split into two groups: (1) those whose tumors were sensitive to at least two of the HDRA drugs and received two HDRA positive drugs per chemotherapy session (31 patients) and (2) those whose tumors were sensitive to one or none of the HDRA drugs and were treated with a combination of one HDRA positive drug and one HDRA negative or two HDRA negative drugs per chemotherapy session (34 patients).
The overall five-year survival rate for the prediction sensitive group given two HDRA positive drugs was 82.4 percent. In contrast, the five-year survival rate for the patients whose tumors indicated a low sensitivity or no sensitivity to the HDRA drugs and received one HDRA positive drug and one HDRA negative or two HDRA negative drugs was 40.1 percent. Additionally, the rate of relapse was lower for the patients in the prediction sensitive group. Relapse occurred in 29 percent of patients who were given two HDRA positive drugs per chemotherapy session while it occurred in 55.8 percent of patients who underwent the other treatment.
"Our research concluded that the HDRA assay seems to be useful for the selection of anticancer drugs in chemotherapy," explained lead investigator, Masayuki Tanahashi, MD. However, Dr. Tanahashi and his colleagues recommend further research into this treatment option.
Journal of Thoracic Oncology (JTO) – (journals.lww.com/jto)
The JTO is a prized resource for medical specialists and scientists who focus on the detection, prevention, diagnosis and treatment of lung cancer. The JTO is the official monthly journal of the International Association for the Study of Lung Cancer (IASLC.org) and emphasizes a multidisciplinary approach, including original research (clinical trials and translational or basic research), reviews and opinion pieces.
Team discovers how bacteria exploit a chink in the body's armor
20.01.2017 | University of Illinois at Urbana-Champaign
Rabies viruses reveal wiring in transparent brains
19.01.2017 | Rheinische Friedrich-Wilhelms-Universität Bonn
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
20.01.2017 | Awards Funding
20.01.2017 | Materials Sciences
20.01.2017 | Life Sciences