VPS33B and idiopathic pulmonary fibrosis: In sites of emerging fibrotic remodeling, integrin α11 subunit and VPS33B are also detected (red asterisks, Figure 9B; additional N=3 IPF specimens, Figure 9—figure supplement 1), indicating a role for VPS33B/integrin α11 chain in collagen-I deposition in the context of IPF.