Fig. 1From: Distinct COPD subtypes in former smokers revealed by gene network perturbation analysisOverview of the subtyping procedure. A Selection of reference (control) samples from the COPDGene discovery cohort (617 former smokers). B Network deregulation procedure to identify COPD subtypes. C t-SNE plot of the four COPD sample clusters identified by ssNPA. Clusters 0 and 1 have similar clinical characteristics, as do clusters 2 and 3Back to article page