PRMT5 and pulmonary arterial hypertension: No correlations were found between serum levels of anti-PRMT5 antibodies with other clinical parameters in terms of age, sex, disease duration, therapeutic backgrounds, commodity diseases, current mRSS, the presence of digital ulcer (DU), pulmonary arterial hypertension (PAH), telangiectasia or the pattern of nailfold capillaroscopy (data not shown).