IL6 and pulmonary arterial hypertension: Two genes were commonly upregulated in all diseases with EVLP but not in healthy lungs, being mostly expressed in PAH and least in IPF: Interleukin-6 (IL-6; p < 0.01) and Solute Carrier Family 7 Member 5 (SLC7A5 or LAT1; p < 0.01).