ACAs	Anti-centromere autoantibodies
ACE	Angiotensin-converting enzyme
ANA	Antinuclear antibody
ATAs	Anti-topoisomerase I autoantibodies
CREST	Calcinosis, RP, esophageal dysmotility, sclerodactyly, and telangiectasia
CRP	C-reactive protein
DLCO	Diffusing capacity for carbon monoxide
EF	Ejection fraction
ESR	Erythrocyte sedimentation rate
FVC	Forced vital capacity
FEV1	Forced expiratory volume in one second
GAVE	Gastric antral venous ectasia
GI	Gastro-intestinal tract
HRCT	High-resolution computed tomography
ICAP	International Consensus on ANA Patterns
IVIG	Intravenous immunoglobulin
IIF	Indirect immunofluorescence
IIM	Idiopathic inflammatory myopathy
ILD	Interstitial lung disease
MCTD	Mixed connective tissue disease
NSAIDs	Nonsteroidal anti-inflammatory drugs
PAP	Pulmonary arterial pressure
PFT	Pulmonary function test
PMAT	Particle multi-analyte technology
RNAP3	Anti-RNA polymerase III
RP	Raynaud’s phenomenon
SSc	Systemic sclerosis
TLC	Total lung capacity
UCTD	Undifferentiated connective tissue disease