BIRC5 and pulmonary arterial hypertension: Survivin is also expressed in pulmonary arteries of patients with PAH, but not in subjects without PAH (McMurtry et al., 2005), as well as in PASM cells of the monocrotaline-induced PAH model (MCT-PAH) in rats (McMurtry et al., 2005; Lao et al., 2016).