3.12—In patients with ILD, capillaroscopy should be required at least for patients with Raynaud's phenomenon and for those with specific autoantibodies for systemic sclerosis, mixed connective tissue disease and myositis (anticentromere, anti-Scl70, anti-RNP, specific anti-myositis, anti-synthetase). This evidence concerns the gene RNPC3 and systemic sclerosis.