ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,449,427, issued on Oct. 21, was assigned to Exagen Inc. (Vista, Calif.).

"Methods for treating and diagnosing systemic lupus erythematosus" was invented by Thierry Dervieux (San Diego) and Derren Barken (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and reagents for diagnosing, prognosing, and treating systemic lupus erythematosus (SLE) are disclosed, involving calculating an SLE risk score for a subject based on a level of each of an erythrocyte C4d (EC4d) marker, a B-cell C4d (BC4d) marker, anti-nuclear antibodies (ANA), and optional rule-out markers."

The patent was filed on Nov. 23, 2022, under Application No. 17/993,502.

*For f...