Less severe disease in patients with early systemic sclerosis?

Area of Science:

• Rheumatology
• Clinical Immunology
• Internal Medicine

Background:

• Systemic sclerosis (SSc) diagnosis has evolved with new classification criteria.
• Evaluating the impact of the 2013 American College of Rheumatology/European League Against Rheumatism (ACR/EULAR) criteria on patient outcomes is crucial.

Purpose of the Study:

• To compare disease severity and activity in SSc patients diagnosed before and after the implementation of the 2013 ACR/EULAR classification criteria.
• To assess if the updated criteria facilitate earlier diagnosis and influence disease progression.

Main Methods:

• A cohort study comparing 120 historical SSc patients (diagnosed before 2013) with 34 early SSc patients (diagnosed after 2013 using ACR/EULAR criteria).
• Disease activity assessed using the European Scleroderma Study Group Activity Index (EScSG-AI) and EUSTAR activity index.
• Disease severity evaluated with the Medsger Disease Severity Scale (DSS) and summed DSS scores.

Main Results:

• The time from the first non-Raynaud's symptom to diagnosis was significantly shorter in the early SSc group.
• Disease activity indices (EScSG-AI, EUSTAR) were comparable between the early and historical SSc groups.
• The early SSc group exhibited significantly lower overall, general, skin, and gastrointestinal Medsger Disease Severity Scale scores.

Conclusions:

• The 2013 ACR/EULAR classification criteria enable earlier diagnosis of systemic sclerosis.
• Patients diagnosed under the newer criteria present with less severe disease manifestations.
• Updated classification criteria may improve early detection and management of SSc.