Abstract: The invention relates to methods of (i) treating a subject for a disease, (ii) amelioration of decline of forced vital capacity in a subject in need thereof, (iii) modulating ?V?6 integrin, ?V?1 integrin, or both ?V?6 integrin and ?V?1 integrin in a subject in need thereof, (iv) increasing the expression of one or more genes in a subject in need thereof, (v) decreasing the expression of one or more genes in a subject in need thereof, and (vi) modulating the activity of at least one gene affecting fibrotic activity in a subject in need thereof, comprising administration of compounds of Formula (A), Formula (I), Formula (II), or (S)-4-((2-methoxyethyl)(4-(5,6,7,8-tetrahydro-1,8-naphthyridin-2-yl)butyl)amino)-2-(quinazolin-4-ylamino)butanoic acid, or a pharmaceutically acceptable salt thereof as described herein; and administering to the subject at least a second drug selected from pirfenidone and nintedanib, or a salt thereof.

Abstract: The invention relates to methods of treating a subject for a disease comprising administration of compounds of Formula (A), Formula (I), or Formula (II): or a salt thereof, wherein R1, R2, R10, R11, R12, R13, R14, R15, R16, q and p are as described herein; and administering to the subject at least a second drug selected from pirfenidone and nintedanib, or a salt thereof. Compounds of Formula (A), Formula (I), Formula (II), and pharmaceutical compositions thereof are ?v?6 integrin inhibitors that are useful for treating fibrosis such as idiopathic pulmonary fibrosis (IPF) and nonspecific interstitial pneumonia (NSIP).