IFIH1 and interstitial lung disease: Recently, an investigation, regarding IFIH1 rs1990760 associated with susceptibility to SLE and PM/DM, was performed in the Japanese population, which suggested IFIH1 rs1990760 polymorphism was not significantly associated with PM/DM as a whole in this study, but only showed the AA genotype tended to be found with higher frequency in the PM with ILD subset.