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Your Environment. Your Health.

Multicenter Validation Study of Revised Preliminary Definitions of Improvement

Principal Investigator:

I Garcia-De La Torre, Guadalajara, Jal., Mexico


Study Design:

Natural History Study


Types & Number of IIM Studied:

Active, early Adult Polymyositis and Dermatomyositis (N = 20-25)


Entry Criteria:

Probable or definite Bohan and Peter criteria for Polymyositis and Dermatomyositis


IMACS Core Set Measures Included:

All: Physician and Patient Global, Manual Muscle Testing, Health Assessment Questionnaire, enzymes, Myositis Disease Activity Assessment Tool; Myositis Damage Index, Health-related Quality of Life by SF-36


Other Measures Included:

Antinuclear Antibodies, Storage of DNA for futures studies


Primary Outcome:

IMACS Definitions of Improvement


Study Duration:

1 year


Funding Sources:

University of Guadalajara and CONACYT, Mexico



Enrollment started in February 2010
Anticipated completion: early 2011



Ignacio Garcia-De La Torre, Ph.D.


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