This application proposes to continue the participation of investigators at UCSF in an interactive network of six centers, the Asthma Clinical Research Network (ACRN) in conducting studies of novel therapies for asthma and in disseminating findings to the practicing community. The need for such a network was suggested by increases in the mortality, morbidity, prevalence, and costs of asthma, by research studies showing that asthma is linked to airway inflammation, and by the accelerating rate of development of potentially effective, but also potentially costly treatments. Defining the place of these new therapies was seen as requiring collaborative, multi-center studies examining subjects reflecting the diversity of the U.S. population. In its first 5 years, the ACRN established an interactive infrastructure and added a research site at Harlem Hospital, New York, which serves a predominantly minority population. The ACRN completed and published trials of the effects of regular use of a Beta-agonist in mild asthma(""""""""BAGS"""""""") and of the efficacy of colchicine as an alternate to an inhaled corticosteroid (ICS) in moderate asthma. It is now conducting trials comparing a long-acting Beta-agonist, an ICS, and the combination of the two in moderate to severe asthma. We are about to start a 5th study to establish doses of different ICS with equivalent effects on cortisol secretion. These studies have been presented at meetings of the ATS, ACCP, and AAAAI, as have 10-12 ancillary studies analyzing the performance of clinical research. The ACRN has also reported its findings from subgroup analysis of the """"""""BAGS"""""""" study: that subjects with different genotypes for the Beta-adrenergic receptor are differently affected by regular use of albuterol. This application proposes continued participation of the UCSF Asthma Clinical Research group in the multicentered, collaborative trials of the ACRN. The studies proposed include a comparison of the clinical efficacy of doses of different inhaled corticosteroids with equal systemic effects, a prospective study of regular use of an inhaled Beta-agonist in subjects stratified by genotypes for the Beta-adrenergic receptor, a study of the efficacy of a leukotriene pathway antagonist in enabling reduction or elimination of inhaled corticosteroid therapy in subjects with mild or moderate persistent asthma, and other studies illustrated briefly in this application, but modified or replaced by the ACRN Steering Committee in response to new information or the release of new forms of therapy.

Agency
National Institute of Health (NIH)
Institute
National Heart, Lung, and Blood Institute (NHLBI)
Type
Cooperative Clinical Research--Cooperative Agreements (U10)
Project #
3U10HL051823-06S1
Application #
2873639
Study Section
Special Emphasis Panel (ZHL1 (F1))
Project Start
1993-09-30
Project End
2003-08-31
Budget Start
1998-09-01
Budget End
1999-08-31
Support Year
6
Fiscal Year
1998
Total Cost
Indirect Cost
Name
University of California San Francisco
Department
Internal Medicine/Medicine
Type
Schools of Medicine
DUNS #
073133571
City
San Francisco
State
CA
Country
United States
Zip Code
94143
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