IL17A and cutaneous lupus erythematosus: Levels of circulating IL-17A have been found to correlate with the Cutaneous Lupus Erythematosus activity and damage score index (CLASI) score [79], and high IL-17A expression has been demonstrated in the cellular infiltrates of the skin tissue of CLE lesions [80], as well as in kidneys affected by lupus nephritis (LN) [48].