Tasquinimod is a so-called "anti-angiogenesis" drug that squeezes off blood supply to prostate tumors by blocking new blood vessel development. Tumors require these vast networks of blood vessels to supply nutrients.
The multicenter trial at seven institutions, including Johns Hopkins, enrolled prostate cancer patients whose disease had spread to take a once-daily pill for four weeks. At six months, 57 percent of men taking tasquinimod had no disease progression as compared with 33 percent taking a placebo. Overall, the drug added approximately 12 weeks of time that the disease did not worsen (progression-free survival).
The most common side effects included gastrointestinal problems, fatigue and bone pain, and some rare occurrences of heart attack, stroke and deep vein thrombosis.
"Given these results, we feel it is reasonable to move forward with Phase III studies," says Michael Carducci, M.D., professor at the Johns Hopkins Kimmel Cancer Center, who will lead the next phase of an international study of the drug. "After exploring the drug as a single agent, we may study it in combination approaches with other prostate cancer drugs."
Research leading to tasquinimod began in the early 1990s when John Isaacs, Ph.D., professor at the Johns Hopkins Kimmel Cancer Center, found that a drug called linomide, which had been tested in multiple sclerosis, restricted blood supply to prostate tumors. However, the drug's cardiac side effects were too toxic for humans, so Isaacs in collaboration with the pharmaceutical company Active Biotech identified tasquinimod for clinical testing after searching for drugs similar to linomide with the same blood vessel action but with less toxicity.
Isaacs says that tasquinimod works by stopping new blood vessel development around the tumor, but does not make existing vasculature disappear. "The idea for anti-angiogenesis drugs is not to prevent tumors from developing; rather, it is to stabilize disease," says Isaacs, who is conducting additional laboratory studies to identify the drug's precise cellular target.
Funding for the study was provided by Active Biotech, manufacturer of tasquinimod, and the U.S. Department of Defense.
Carducci is a paid consultant to Active Biotech and the terms of this arrangement are being managed in accordance with policies set by the Johns Hopkins University.
Based on abstracts and presentations by Johns Hopkins Kimmel Cancer Center scientists scheduled to present their work at the annual meeting of the American Society of Clinical Oncology (ASCO), June 4-8, in Chicago.
Vanessa Wasta | EurekAlert!
Researchers identify potentially druggable mutant p53 proteins that promote cancer growth
09.12.2016 | Cold Spring Harbor Laboratory
Plant-based substance boosts eyelash growth
09.12.2016 | Fraunhofer-Institut für Angewandte Polymerforschung IAP
Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
09.12.2016 | Life Sciences
09.12.2016 | Ecology, The Environment and Conservation
09.12.2016 | Health and Medicine