H19 and pulmonary arterial hypertension: While LINC01491 has not been well characterized in the literature, other lncRNAs have been found to play a role in the pathogenesis of PAH (Han et al., 2021), with lncRNA H19 being a specific example showing promise as a biomarker for severity of PAH as well as a potential therapeutic target (Omura et al., 2020).