RT Journal Article SR Electronic T1 An MIF Promoter Polymorphism Is Associated with Susceptibility to Pulmonary Arterial Hypertension in Diffuse Cutaneous Systemic Sclerosis JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP jrheum.161369 DO 10.3899/jrheum.161369 A1 Lara Bossini-Castillo A1 Diana Campillo-Davó A1 Elena López-Isac A1 Francisco David Carmona A1 Carmen P. Simeon A1 Patricia Carreira A1 José Luis Callejas-Rubio A1 Iván Castellví A1 Antonio Fernández-Nebro A1 Luis Rodríguez-Rodríguez A1 Manel Rubio-Rivas A1 Francisco J. García-Hernández A1 Ana Belén Madroñero A1 Lorenzo Beretta A1 Alessandro Santaniello A1 Claudio Lunardi A1 Paolo Airó A1 Anna-Maria Hoffmann-Vold A1 Alexander Kreuter A1 Gabriela Riemekasten A1 Torsten Witte A1 Nicolas Hunzelmann A1 Madelon C. Vonk A1 Alexandre E. Voskuyl A1 J. de Vries-Bouwstra A1 Paul Shiels A1 Ariane Herrick A1 Jane Worthington A1 Timothy R.D.J. Radstake A1 Javier Martin A1 the Spanish Scleroderma Group YR 2017 UL http://www.jrheum.org/content/early/2017/06/26/jrheum.161369.abstract AB Objective Systemic sclerosis (SSc) is a fibrotic immune-mediated disease of unknown etiology. Among its clinical manifestations, pulmonary involvement is the leading cause of mortality in patients with SSc. However, the genetic factors involved in lung complication are not well defined. We aimed to review the association of the MIF gene, which encodes a cytokine implicated in idiopathic pulmonary hypertension among other diseases, with the susceptibility and clinical expression of SSc, in addition to testing the association of this polymorphism with SSc-related pulmonary involvement. Methods A total of 4392 patients with SSc and 16,591 unaffected controls from 6 cohorts of European origin were genotyped for the MIF promoter variant rs755622. An inverse variance method was used to metaanalyze the data. Results A statistically significant increase of the MIF rs755622*C allele frequency compared with controls was observed in the subgroups of patients with diffuse cutaneous SSc (dcSSc) and with pulmonary arterial hypertension (PAH) independently (dcSSc: p = 3.20E–2, OR 1.13; PAH: p = 2.19E– 02, OR 1.32). However, our data revealed a stronger effect size with the subset of patients with SSc showing both clinical manifestations (dcSSc with PAH: p = 6.91E–3, OR 2.05). Conclusion We reviewed the association of the MIF rs755622*C allele with SSc and described a phenotype-specific association of this variant with the susceptibility to develop PAH in patients with dcSSc.