Systemic Sclerosis in Individuals With Exposure to World Trade Center Ground Zero Rescue and Recovery Efforts: A Case...

Area of Science:

• Rheumatology
• Environmental Health
• Pulmonology

Background:

• The World Trade Center (WTC) attack generated a dust plume containing hazardous materials like silica, hydrocarbons, and asbestos.
• Autoimmune disorders have been increasingly reported in individuals with WTC site exposure.
• The specific characteristics of patients developing systemic sclerosis (SSc) following WTC exposure remain undescribed.

Purpose of the Study:

• To describe the clinical features and demographic characteristics of patients diagnosed with systemic sclerosis (SSc) who were exposed to the WTC site.
• To identify potential associations between WTC exposure and the development of SSc and related conditions.

Main Methods:

• A cohort of 11 patients with SSc or SSc spectrum conditions and reported WTC exposure was analyzed.
• Data collection included patient demographics, diagnosis details, and exposure assessments for a subset of patients.

Main Results:

• The majority of the 11 patients (80%) were female, with a median age at diagnosis of 46 years.
• SSc onset occurred a median of 11 years post-WTC exposure, with 55% developing symptoms more than 5 years after exposure.
• Interstitial lung disease (ILD) was highly prevalent (91%), and 36% of patients exhibited overlapping features with other connective tissue diseases (CTDs).

Conclusions:

• Patients with SSc and WTC exposure exhibit a notable frequency of interstitial lung disease (ILD) and overlapping CTD features.
• These findings suggest a potential association between WTC exposure and the development of SSc.
• Further research is warranted to fully characterize this association and its underlying mechanisms.