TNFRSF1A-associated periodic syndrome (TRAPS), Muckle-Wells syndrome (MWS) and renal amyloidosis.

TNFRSF1A-associated periodic syndrome (TRAPS) and Muckle-Wells syndrome (MWS) are two rare autosomal-dominant inherited periodic fever syndromes found in various populations. The genes involved in these syndromes are respectively TNFRSF1A (TNF receptor 1) and CIAS1 (a gene containing both pyrin and NBS domains). Missense mutations found in these genes are probably responsible for an improvement in function. Renal AA amyloidosis can also be observed.