Navigation Links
Stem cell transplantation of therapy-resistant chronic leukemia successful
Date:7/12/2010

The transplantation of stem cells from a healthy donor (allogeneic) offers the chance of cure for patients with an aggressive form of chronic lymphocytic leukemia (CLL), irrespective of genetic prognostic factors and the prior course of the disease. The German CLL Study Group proved this in a multicentric clinical phase II study led by Professor Dr. Peter Dreger, senior consultant and head of the division of stem cell transplantation at the Department of Internal Medicine V at Heidelberg University Hospital. The results were published online in the prominent journal "Blood" at the beginning of July.

CLL is the most frequent form of leukemia in western countries. In many cases, it has a rather benign course. However, there are patients in whom the disease does not respond to the standard treatment with chemotherapy or antibodies. Patients with this high-risk CLL often die within a few years of the diagnosis. For some of these patients, the unfavorable course can be predicted based on the presence of typical chromosomal mutations in leukemia cells (deletion 17p-).

High-risk CLL can be controlled in the long term by allogeneic stem cell transplantation

Investigators at 16 different treatment centers in Germany included a total of 90 patients with high-risk CLL in the current study. For conditioning for transplantation, patients were given a reduced dosage of chemotherapy so that the acute tolerance of the transplantation was very good.

For a large percentage of patients, highly sensitive tests were conducted regularly to detect any remaining leukemia cells after the transplantation. In about half of these patients, no remaining CLL cells were detected in the blood in the long term, which was highly predictive for the lack of recurrence for the follow-up period (up to eight years, on average about four years). This positive result was independent of the genetic risk profile and resistance to certain chemotherapeutic drugs. The donor type (related or unrelated) also had no influence on the result.

"Our study is the largest so far for this patient population and proved that allogeneic stem cell transplantation is a promising therapy option for high-risk CLL and has the potential to cure for this otherwise incurable kind of leukemia," says Professor Dreger, head of the study.

Risks of stem cell transplantation

Allogeneic stem cell transplantation is a very stressful and risky form of therapy, which could previously not be carried out on the generally older patients affected by CLL. With the new improved method studied here, tolerance was significantly improved. The main risk still remains the "graft-versus-host reaction", in which donor cells attack the patient's own cells, which are foreign to them. However, this is also the mechanism by which the leukemia cells are eliminated. "It is crucial to control the transplanted donor immune cells so that the effect is strong enough to eliminate the leukemia cells but not strong enough to lead to complications in other tissues and organs. For this, regular measurement of the CLL cells in blood is a new, extremely helpful instrument," says Professor Dreger.


'/>"/>

Contact: Dr. Peter Dreger
peter.dreger@med.uni-heidelberg.de
062-215-68008
University Hospital Heidelberg
Source:Eurekalert

Related medicine news :

1. Fewer platelets could be used for some cancer and bone-marrow transplantation patients
2. Novel Parkinson's Treatment Strategy Involves Cell Transplantation
3. Living donor exchange poses new option for liver transplantation
4. Cell Transplantation Eyed as Treatment for Cerebral Palsy
5. Cedars-Sinai heart transplantation tip sheet
6. Study examines global availability of treatment involving transplantation of blood stem cells
7. African-Americans and women are less likely to undergo bone marrow transplantation
8. The experience of arterial reconstruction in adult-to-adult living donor liver transplantation
9. Combination of Meniscus Allograft Transplantation and Repair of Articular Cartilage May Slow the Progression of Arthritis in the Knee
10. Young patients with chronic illnesses find relief in acupuncture
11. Exposure to 9/11 Fumes Tied to Chronic Headaches
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/20/2017)... (PRWEB) , ... January 20, 2017 , ... “Code Word: Chocolate Biscuit”: a biographical account ... Word: Chocolate Biscuit” is the creation of published author, Marlyn Ivey, born in Lynn Haven, ... he went to school and at 19 years of age, he joined the Navy and ...
(Date:1/20/2017)... ... , ... “Journey to Christmas:” a beautiful and enchanting tale that teaches children the true meaning ... of three in Oklahoma City, and a devoted woman of faith. , “Becoming a ... in the back of my mind for years, but actually doing it might have been ...
(Date:1/19/2017)... ... ... the Centers for Medicare & Medicaid Services (CMS) announced over 359,000 clinicians are ... who participate in APMs are paid for the quality of care they give to ... a system that delivers better care and one in which clinicians work together to ...
(Date:1/19/2017)... ... ... the cold weather here, many people will have to clear snow with snow blowers or ... snow, but they can be dangerous when used incorrectly. That’s why Amica Insurance ... use of snow blowers:, , When removing wet snow or debris ...
(Date:1/19/2017)... Melville, New York (PRWEB) , ... January 19, ... ... state–of-the-art high definition dynamic telemedicine solutions, has recently unveiled impressive transportable capabilities with ... this newly designed product is an extension to RMT technology that delivers HD, ...
Breaking Medicine News(10 mins):
(Date:1/19/2017)... global  pacemaker market  is expected to reach USD 12.3 billion by 2025, according ... cardiac conditions coupled with the availability of medical coverage is a key driving ... devices are supporting the expansion of this vertical. ... ... Logo ...
(Date:1/19/2017)... Jan. 18, 2017  ViewRay, Inc. (Nasdaq: ... and only clinical MRI-guided radiation therapy system, announced today ... approximately $26.1 million through a private placement of ... led the financing and was joined by certain ... and Kearny Venture Partners, and an additional new ...
(Date:1/19/2017)... Calif. , Jan. 18, 2017  Magnetic ... solutions has entered into an agreement with inviCRO ... the Momentum MPI imaging system based on inviCRO,s ... will be distributed as a complete MPI solution ... enable quantitative nanoparticle or cell imaging in vivo. ...
Breaking Medicine Technology: