The purpose of this research study is to determine how well and safe deucravacitinib, an investigational/non-approved United States Food and Drug Administration (US FDA) medication, is in treating Systemic Lupus Erythematosus (SLE, lupus).

Participation in the study will involve being assigned deucravacitinib or a placebo (a drug that looks likes the study medication but does not contain any medication) and completing a series of in person clinic visits much like those completed as part of standard of care. Blood and urine samples will be collected for both routine health and safety tests as well as research/experimental testing.

The study will require 16 visits over a period of 14 months. There is an optional extension to the study possible, should you wish to continue and the study doctor feels that you remain a good candidate for participation. Study medication is provided and compensation is available for participation.

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