Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Patients With Treatment-Resistant Chronic Leukemia Respond Positively to Stem Cell Transplants

02.07.2010
Allogeneic (donor-derived) stem cell transplant (alloSCT) may be a promising option for patients with treatment-resistant chronic lymphocytic leukemia (CLL), regardless of the patient’s underlying genetic abnormalities, according to the results of a study published online today in Blood, the journal of the American Society of Hematology.

About 15,000 new CLL cases were diagnosed in the United States in 2009 and about 4,000 deaths were documented (according to the American Cancer Society). While survival rates for leukemia have generally improved in the last decade, patients with rare, more aggressive forms of CLL do not respond well to standard chemotherapy-based and targeted treatments and often die within a few years of diagnosis.

Patients with CLL who are treatment-resistant (do not respond to chemotherapy and targeted antibody combination regimens) have been shown to have genetic abnormalities that predict their lack of response. In this study, researchers investigated whether alloSCT could be an effective treatment for this patient population, independent of underlying genetic abnormalities.

"This study, which is one of the largest of its kind, confirms that allogeneic stem cell transplants are a promising therapeutic option for treatment-resistant CLL patients fighting particularly aggressive disease, regardless of their genetic risk profile," said Peter Dreger, MD, of the Department of Medicine, University of Heidelberg, Germany, and lead author of the study. "However, because stem cell transplants come with serious risks, they should be reserved for only this group of patients until further studies can be done."

In alloSCT, blood stem cells are collected from a donor and then infused into the patient where they travel to the bone marrow and begin to produce new blood cells, replacing those that have been affected as a result of the disease. This type of treatment can pose serious complications, some of which are potentially fatal. In this prospective phase II study, a total of 90 patients with treatment-resistant CLL received alloSCT, and stem cell donors were either healthy siblings or unrelated, but matched, volunteers.

Prior to the transplant, patients in this study received conditioning, a standard therapy administered immediately before a stem cell transplant to help prepare the body to receive and accept the transplanted cells. The research team used a reduced-intensity conditioning approach with two common chemotherapies (fludarabine and cyclophosphamide) to reduce complications and allow the donor stem cells to fight the disease themselves.

After treatment with alloSCT, more than 40 percent of participants with this otherwise fatal disease enjoyed long-term freedom from relapse. These findings suggest that alloSCT is a feasible and potentially curative treatment for patients with high-risk CLL and should be considered for this patient population.

Reporters who wish to receive a copy of the study or arrange an interview with Dr. Dreger may contact Wendy Stokes at 202-552-4927 or wstokes@hematology.org.

The American Society of Hematology (www.hematology.org) is the world’s largest professional society concerned with the causes and treatment of blood disorders. Its mission is to further the understanding, diagnosis, treatment, and prevention of disorders affecting blood, bone marrow, and the immunologic, hemostatic, and vascular systems, by promoting research, clinical care, education, training, and advocacy in hematology. ASH provides Blood: The Vital Connection (www.bloodthevitalconnection.org), a credible online resource addressing bleeding and clotting disorders, anemia, and cancer. The official journal of ASH is Blood (www.bloodjournal.org), the most cited peer-reviewed publication in the field, which is available weekly in print and online.

Wendy Stokes | EurekAlert!
Further information:
http://www.hematology.org

More articles from Health and Medicine:

nachricht New malaria analysis method reveals disease severity in minutes
14.08.2017 | University of British Columbia

nachricht New type of blood cells work as indicators of autoimmunity
14.08.2017 | Instituto de Medicina Molecular

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

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,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

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...

Im Focus: Circular RNA linked to brain function

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...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

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...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

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...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

A Map of the Cell’s Power Station

18.08.2017 | Life Sciences

Engineering team images tiny quasicrystals as they form

18.08.2017 | Physics and Astronomy

Researchers printed graphene-like materials with inkjet

18.08.2017 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>