Rein Therapeutics Inc is a clinical-stage biopharmaceutical company. The company is focused on developing therapies in orphan pulmonary and fibrosis indications, including two Phase 2-ready clinical assets. The company's product candidate includes LTI-03: a peptide for which company conducted a Phase 1b dose-ranging, placebo-controlled safety, tolerability, and pharmacodynamic biomarker activity trial in development for the treatment of Idiopathic Pulmonary Fibrosis; LTI-01:proenzyme that completed a Phase 2a dose-ranging, placebo-controlled trial and a Phase 1b safety, tolerability and proof of mechanism trial in loculated pleural effusion, or LPE, patients, an indication that has no approved drug treatment;and LTI-05 and others.