A Study of Safety & Blood Levels of IDL-2965 in Healthy Subjects and Patients With a Special Type of Pulmonary Fibrosis

Inclusion Criteria: Healthy subjects: • Male and female subjects aged between 18 and 60 years, with a body mass index between 18.0 and 32.0 kg/m2. IPF subjects: * Male and female subjects over 40 years of age. * Diagnosis of idiopathic pulmonary fibrosis * Idiopathic pulmonary fibrosis has been stable for at least 3 months. Exclusion Criteria: Healthy subjects and IPF subjects: * Significant history or clinical manifestation of any disease/disorder, other than IPF. * History of significant hypersensitivity, intolerance, or allergy to any drug compound * Poor peripheral venous access * Use or intend to use any medications, tobacco or nicotine containing products or electronic cigarettes. * History of stomach or intestinal surgery or resection that would potentially alter absorption and/or excretion of orally administered drugs IPF subjects: • Pulmonary function tests and other diagnostic procedures inconsistent with diagnosis of idiopathic pulmonary fibrosis.