The study seeks to evaluate the effectiveness of ARINA-1, an investigational inhaled medication, in reducing cough and mucus production in patients who are diagnosed with chronic bronchitis. If enrolled in this study, there will be four clinic visits, one telehealth visit, and one phone call. As part of the study assessments, a cough monitor will be worn on the wrist, as well as repeat spirometry, questionnaires, and bloodwork will be completed. The ARINA-1 will administered with a nebulizer provided to participants and is taken twice daily for 28 days. The total duration of this study is up to 12 weeks for each enrolled participant.

Compensation will be provided for your time for each visit that is completed.

The purpose of this study is to test whether a drug called NS-229 (the study drug) is a potential treatment for patients with Eosinophilic Granulomatosis With Polyangiitis (EGPA).

NS-229 is an investigational drug that is provided in an oral pill form. An investigational drug is not approved by The US Food and Drug Administration. It can only be used in a research study like this one. In this study, NS-229 will be compared with a placebo (dummy drug), having no active drug in it. This is a randomized study, meaning that you will be assigned by chance (like flipping a coin) to receive either the study drug or placebo. The study is also double-blinded study, meaning you and your study doctor will not know what you are receiving, the NS-229 or placebo.

The study is sponsored by a NS Pharma, Inc. Participation in the study will require 12 visits to the MUSC main campus over approximately 8 months. Visits are much like the your standard of care and include the following procedures: blood draw, urine collection, physician-led assessments of your disease (for example physical exam and medical history review), tests to assess your lung function and health (Pulmonary Function Test (PFT) and spirometry, health questionnaires. You will also be asked to complete a daily diary regarding your medication use and vasculitis symptoms.

Compensation is available for participation

This is a Phase 2, double-blind, randomized, placebo-controlled study of KER-012 (study drug) compared to Placebo in adult participants with a primary diagnosis of Pulmonary Arterial Hypertension (PAH) on stable background PAH therapy. About 90 participants, in approximately 60 study centers worldwide, will take part in this study. Participation in this study may last up to 2 years and the study has a Screening period, Treatment period, Extension period, and Follow-up period.