DSP and idiopathic interstitial pneumonia: The association between DSP variants and IPF, as well as the relationship between DSP variants and lung expression of this gene, was confirmed more recently by Mathai et al. (91) IPF lung has higher gene expression of DSP. However, IPF subjects with the rs2076295 variant were found to have lower DSP expression, suggesting that differential DSP expression may play a role in a subset or sub-phenotype of IPF (91).