PPIB and arthritic joint disease: In order to homogenize the PSRA patient group one might study:(A) acute onset and nonmigratory type of arthritis, (C) poor responsiveness ofarthritis to salicylates/nonsteroidals, (D) evidence of antecedent streptococcalinfection, (E) not fulfilling modified Jones criteria, plus (F)antistreptolysin-O/antiDNaseB ratio <1.4, or (G) antiDNase-B >400 U/L.Prospective studies in other GAS-induced PSRA patient groups are needed forvalidation and proving theirprognostic value.