TY - JOUR TI - Recommendations for the classification of diseases as CFTR-related disorders AU - Bombieri, C. AU - Claustres, M. AU - De Boeck, K. AU - Derichs, N. AU - Dodge, J. AU - Girodon, E. AU - Sermet, I. AU - Schwarz, M. AU - Tzetis, M. AU - Wilschanski, M. AU - Bareil, C. AU - Bilton, D. AU - Castellani, C. AU - Cuppens, H. AU - Cutting, G.R. AU - Drevínek, P. AU - Farrell, P. AU - Elborn, J.S. AU - Jarvi, K. AU - Kerem, B. AU - Kerem, E. AU - Knowles, M. AU - Macek, M. AU - Munck, A. AU - Radojkovic, D. AU - Seia, M. AU - Sheppard, D.N. AU - Southern, K.W. AU - Stuhrmann, M. AU - Tullis, E. AU - Zielenski, J. AU - Pignatti, P.F. AU - Ferec, C. JO - Journal of Cystic Fibrosis PY - 2011 VL - 10 TODO - SUPPL. 2 SP - S86-S102 PB - SN - 1569-1993 TODO - 10.1016/S1569-1993(11)60014-3 TODO - chloride; transmembrane conductance regulator, acute pancreatitis; allele; article; bronchiectasis; chronic pancreatitis; clinical feature; congenital bilateral absence of vas deferens; congenital malformation; coughing; cystic fibrosis; diagnostic procedure; differential diagnosis; disease association; disease classification; disease severity; DNA polymorphism; electrolyte transport; gene interaction; gene mutation; heterozygosity; human; intestinal current measurement; mutational analysis; nasal potential difference; newborn screening; outcome assessment; pancreas insufficiency; potential difference; respiratory tract disease; respiratory tract infection; sweat test, Cystic Fibrosis; Cystic Fibrosis Transmembrane Conductance Regulator; Europe; Humans; Medicine; Practice Guidelines as Topic TODO - Several diseases have been clinically or genetically related to cystic fibrosis (CF), but a consensus definition is lacking. Here, we present a proposal for consensus guidelines on cystic fibrosis transmembrane conductance regulator (CFTR)-related disorders (CFTR-RDs), reached after expert discussion and two dedicated workshops.A CFTR-RD may be defined as "a clinical entity associated with CFTR dysfunction that does not fulfil diagnostic criteria for CF" .The utility of sweat testing, mutation analysis, nasal potential difference, and/or intestinal current measurement for the differential diagnosis of CF and CFTR-RD is discussed. Algorithms which use genetic and functional diagnostic tests to distinguish CF and CFTR-RDs are presented.According to present knowledge, congenital bilateral absence of vas deferens (CBAVD), acute recurrent or chronic pancreatitis and disseminated bronchiectasis, all with CFTR dysfunction, are CFTR-RDs. © 2011 European Cystic Fibrosis Society. ER -