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Your Environment. Your Health.

Mexican Natural History Study of Adult Polymyositis and Dermatomyositis

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 = 21)

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 completed


Ignacio Garcia-De La Torre, Ph.D.
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