Autophagy markers that can be evaluated in UIP/IPF are: adenosin-5′ monophosphate-activated kinase (AMPK), the activator of autophagy; microtubule-associated protein 1A/1B-light chain 3 (LC3); and microtubule-associated protein 1S (MAP1S), involved in the development and degradation of autophagosomes [105,106,107]. Here, MAP1S is linked to idiopathic pulmonary fibrosis.