Rein Therapeutics is focused on advancing a pipeline of first-in-class medicines to address significant unmet medical needs in orphan pulmonary and fibrosis indications. The company's lead product candidate, LTI-03, is in a Phase 1b clinical trial for the treatment of idiopathic pulmonary fibrosis. LTI-03 is a novel, synthetic peptide with a dual mechanism targeting alveolar epithelial cell survival as well as inhibition of profibrotic signaling. Its second product candidate, LTI-01, is a proenzyme that has completed Phase 1b and Phase 2a clinical trials for the treatment of loculated pleural effusions. LTI-01 has received Orphan Drug Designation in the US and EU and Fast Track Designation in the US. Rein Therapeutics was founded in 2001 and is based in Austin, Texas.