Navigation Links
Rigel's R788 Shows Preclinical Activity in Type 1 Diabetes Model

Research To Be Presented at American Association of Immunologists Meeting

SOUTH SAN FRANCISCO, Calif., April 8, 2008 /PRNewswire-FirstCall/ -- Rigel Pharmaceuticals, Inc. (Nasdaq: RIGL) today announced that its oral Syk kinase inhibitor, R788, may be a useful treatment for type 1 diabetes mellitus, according to research being presented at the American Association of Immunologists meeting in San Diego, California on April 8, 2008. Using Rigel's R788, researchers from the Department of Medicine at Columbia University Medical Center have shown that blocking Syk kinase in a well-established murine model of type 1 diabetes, delayed the onset of diabetes and prolonged survival. A reduction in the production of insulin-specific autoantibodies, an early event in type 1 diabetes pathogenesis, was also observed.

"Inhibition of the Syk kinase has the potential to reduce both autoantibody production and disarm its pathogenic consequences," said Raphael Clynes M.D., Ph.D., assistant professor in Medicine and Microbiology at Columbia University's College of Physician's and Surgeons. "In diabetes, autoantibodies against islet cells appear before the actual onset of disease providing the opportunity to intervene and disable these early events prior to immune destruction of the insulin-producing cells in the pancreas. The protection we see in these mouse models suggests that pharmacologic blockade of Syk with R788 may provide a good therapeutic strategy to treat and potentially prevent the onset or advancement of type 1 diabetes," he added.

Type 1 Diabetes and R788

According to the Juvenile Diabetes Research Foundation, type 1 diabetes, also called juvenile diabetes or insulin-dependent diabetes, occurs when the body's immune system attacks and destroys beta cells within the islets of the pancreas. Beta cells normally produce insulin, a hormone that helps the body move glucose from food into the body's cells to be used for energy. If insulin cannot be produced, the glucose remains in the blood and ultimately may damage organs and tissues. Therefore, insulin replacement via injection once or more each day is vital to patients with type 1 diabetes.

Extensive studies of Rigel's oral Syk inhibitor, R788, have demonstrated results indicating its potential value in modulation of the immune response in a variety of autoimmune disorders. As such, R788 is presently in clinical trials for rheumatoid arthritis, immune thrombocytopenic purpura, and B-cell lymphoma.

This work was supported by funds provided by the Juvenile Diabetes Research Foundation and the Naomi Berrie Diabetes Center at Columbia University Medical Center in Manhattan.

Note: R788 is a prodrug of R406, which is cited in the research study.

About Rigel (

Rigel is a clinical-stage drug development company that discovers and develops novel, small-molecule drugs for the treatment of inflammatory/autoimmune diseases and cancer, as well as viral and metabolic diseases. Our goal is to file one new investigational new drug (IND) application in a significant indication each year. Rigel has achieved this goal every year since 2002. Our pioneering research focuses on intracellular signaling pathways and related targets that are critical to disease mechanisms. Rigel's productivity has resulted in strategic collaborations with large pharmaceutical partners to develop and market our product candidates. Rigel has product development programs in inflammatory/autoimmune diseases such as rheumatoid arthritis, thrombocytopenia and asthma, as well as in cancer.

This press release contains "forward-looking" statements, including statements related to the preclinical data and plans, the potential efficacy and commercial potential of R788 and Rigel's plans to pursue further preclinical development thereof. Any statements contained in this press release that are not statements of historical fact may be deemed to be forward-looking statements. Words such as "believe," "may," "expect," "potential," "indicate," suggest," and similar expressions are intended to identify these forward-looking statements. There are a number of important factors that could cause Rigel's results to differ materially from those indicated by these forward-looking statements, including risks associated with the timing and success of clinical trials and the commercialization of product candidates, potential problems that may arise in the clinical testing and approval process and Rigel's need for additional capital, as well as other risks detailed from time to time in Rigel's SEC reports, including its Form 10-K for the year ended December 31, 2007. Rigel does not undertake any obligation to update forward-looking statements.

Contact: Raul Rodriguez

Phone: 650.624.1302


Media Contact: Susan C. Rogers, Alchemy Consulting, Inc.

Phone: 650.430.3777


SOURCE Rigel Pharmaceuticals, Inc.
Copyright©2008 PR Newswire.
All rights reserved

Related medicine technology :

1. New Study Shows Proprietary Canola Extract, Dermytol(TM), Produces Pronounced Decrease in Malignant Melanoma Tumor Volume
2. New Data Shows Ranexa(R) Increases Glucose-Stimulated Insulin Secretion
3. TAXUS(R) Express(TM) Stent Shows Similarly Low Re-intervention Rates in Diabetic Patients Compared to Non-Diabetics in ARRIVE 1 and 2 registries
4. Rexinoid Developed by NuRx Pharmaceuticals Shows Promise in Prevention, Treatment of Lung, Breast Cancer, Paper in Clinical Cancer Research Reports
5. Study Data Shows VNUS ClosureFAST(TM) Catheter More than 96% Effective
6. Study Shows: New Blood Test Proven Six Times More Effective For Tuberculosis Control
7. Pixantrone Shows Activity in a Preclinical Study of Experimental Autoimmune Myasthenia Gravis (EAMG)
8. Novel Small Molecule Therapy Shows Benefit for Anemic Patients Via Hydration of Red Blood Cells
9. JAK2 Inhibitor Shows Potent Activity in Cells From MPD Patients
10. Newly Approved HIV Drug Shows Great Promise
11. Kaiser Permanente - Group Health Study Shows Depression Worsens HIV Treatment
Post Your Comments:
(Date:6/23/2016)... , June 23, 2016 Research ... Pharma News Issue 52" report to their offering. ... in influenza treatment creates a favourable commercial environment for MedImmune ... growing patient base that will serve to drive considerable growth ... vaccine would serve to cap sales considerably, but development is ...
(Date:6/23/2016)... MOUNTAIN VIEW, Calif. , June 23, 2016 ... 9:00 a.m. CST on Thursday, July 7, 2016 , , ... ) , , , , EXPERT PANELISTS:  ... Sciences, Nitin Naik; Senior Industry Analyst, Christi Bird; Senior Industry Analyst, ... The global pharmaceutical industry is witnessing ...
(Date:6/23/2016)... today announced the establishment of Astellas Farma Colombia (AFC), a new affiliate with operations headquartered in Bogota. ... ... ... ... Astellas is a ...
Breaking Medicine Technology:
(Date:6/26/2016)... , ... June 26, 2016 , ... On June 10-11, ... of the 2016 Cereal Festival and World’s Longest Breakfast Table in Battle Creek, MI, ... the city’s history as home to some of the world’s leading providers of cereal ...
(Date:6/25/2016)... ... 2016 , ... Experts from the American Institutes for Research ... June 26-28, 2016, at the Hynes Convention Center in Boston. , AIR experts ... planning, healthcare costs and patient and family engagement. , AIR researchers will be ...
(Date:6/25/2016)... ... June 25, 2016 , ... As a lifelong Southern Californian, ... and his M.D from the David Geffen School of Medicine at UCLA. He trained ... Angeles to complete his fellowship in hematology/oncology at the UCLA-Olive View-Cedars Sinai program where ...
(Date:6/24/2016)... ... June 24, 2016 , ... Those who have experienced traumatic ... many turn to unhealthy avenues, such as drug or alcohol abuse, as a coping ... released tools for healthy coping following a traumatic event. , Trauma sufferers tend to ...
(Date:6/24/2016)... , ... June 24, 2016 , ... ... offering micro-osteoperforation for accelerated orthodontic treatment. Dr. Cheng has extensive experience with all ... brackets , AcceleDent, and accelerated osteogenic orthodontics. , Micro-osteoperforation is a revolutionary ...
Breaking Medicine News(10 mins):