A#2649 Relapsing Polychondritis Latent Class Analysis to define clinical phenotypes of heterogeneous dx Type 1- ear, nose, subglottic stenosis 2- tracheo/bronchomalacia 3- absence tracheomalacia Decision tree to classify pts in subgroups #ACR24 @RheumNow https://t.co/xpZedPVl7f