Adding bortezomib (Velcade) to standard preventive therapy for graft-versus-host-disease (GVHD) results in improved outcomes for patients receiving stem-cell transplants from mismatched and unrelated donors, according to researchers from Dana-Farber Cancer Institute.
In a new phase 2 trial, patients treated with bortezomib had lower rates of severe acute GVHD and treatment-related mortality, and experienced better one-year overall survival than has been seen historically with such patients receiving standard preventive therapy, the investigators reported at the American Society of Hematology annual meeting.
"This regimen appears to improve not just GVHD prevention but more importantly, overall and relapse-free survival for myeloablative transplant recipients lacking matched sibling donors," said John Koreth, MBBS, DPhil, of Dana-Farber, the lead author and study PI. The senior author is Edwin P. Alyea, III, MD, also of Dana-Farber.
Stem cell transplantation following myeloablation (high-dose chemotherapy to wipe out the patient's bone marrow and immune system) is a curative therapy in advanced or aggressive hematologic malignancies, Koreth said. However, recipients who lack preferred matched sibling donors have worse outcomes, with higher treatment-related mortality and severe GVHD, and poorer survival.
Bortezomib, a proteasome inhibitor drug, is a mainstay of treatment for multiple myeloma. In addition to killing cancer cells, bortezomib dampens some immune responses, suggesting it may have a role in mitigating GVHD, the result of donor immune cells attacking the transplant recipient's normal tissues.
The prospective, single-arm phase 2 trial of a bortezomib-based regimen enrolled 34 patients with hematologic malignancies who received myeloablative stem cell transplants. In addition to standard GVHD prophylaxis medications – tacrolimus and methotrexate - the patients received three doses of bortezomib (on the first, fourth and seventh day after transplant). The treatment was well-tolerated with no patients missing doses because of toxicity.
Historically, recipients of unrelated and mismatched donor transplants have severe acute GVHD rates of 28 percent and 37 percent, respectively, with one-year treatment-related mortality of 36 percent and 45 percent, respectively, and one-year overall survival of 52 percent and 43 percent, respectively.
In patients treated with bortezomib in the new study, the rate of severe acute GVHD at 180 days after transplant was only 12 percent. By two years, only 8.8 percent of patients had died from treatment-related mortality, and 5.9 percent had died from disease relapse. Overall survival at two years was high at 84 percent.
Koreth said that a randomized trial of bortezomib for GVHD prevention is ongoing at Dana-Farber.
Additional authors include Haesook Kim, PhD, and Joseph Antin, MD, both of Dana-Farber.
The research was supported by National Cancer Institute grant P01 CA142106 and by Millennium Pharmaceuticals and Otsuka Pharmaceutical Co.
Teresa Herbert | EurekAlert!
Nanoparticles as a Solution against Antibiotic Resistance?
15.12.2017 | Friedrich-Schiller-Universität Jena
Plasmonic biosensors enable development of new easy-to-use health tests
14.12.2017 | Aalto University
DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.
Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
15.12.2017 | Power and Electrical Engineering
15.12.2017 | Materials Sciences
15.12.2017 | Life Sciences