# Studies of the Natural History and Pathogenesis of Autoimmune/Connective Tissue Diseases

> **NCT00341679** · — · COMPLETED · sponsor: **National Institute of Environmental Health Sciences (NIEHS)** · enrollment: 719 (actual)

## Conditions studied

- Autoimmune/Connective Tissue Diseases
- Idiopathic Inflammatory Myopathies
- Polymyositis
- Dermatomyositis

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT00341679
- **Lead sponsor:** National Institute of Environmental Health Sciences (NIEHS)
- **Sponsor class:** NIH
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2005-07-13
- **Primary completion:** —
- **Final completion:** —
- **Target enrollment:** 719 (ACTUAL)
- **Last updated:** 2026-02-17


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00341679

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00341679, "Studies of the Natural History and Pathogenesis of Autoimmune/Connective Tissue Diseases". Retrieved via AI Analytics 2026-06-23 from https://api.ai-analytics.org/clinical/NCT00341679. Licensed CC0.

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