Table 2

Diagnostic outcomes for all subjects classified by presenting phenotype according to the American and European consensus recommendations

All subjects (n=208)RESP (n=72)PANC (n=44)AZOOSP (n=92)
American recommendations
 Unlikely CF126 (60.6%)50 (69.5%)37 (84.1%)39 (42.4%)
 CFTR-related disorder45 (21.6%)8 (11.1%)3 (6.8%)34 (37.0%)
 CF37 (17.8%)14 (19.4%)4 (9.1%)19 (20.6%)
American recommendations with adjunctive NPD testing
 Unlikely CF142 (68.3%)54 (75.0%)38 (86.4%)50 (54.3%)
 CFTR-related disorder10 (4.8%)2 (2.8%)1 (2.3%)7 (7.6%)
 CF56 (26.9%)16 (22.2%)5 (11.5%)35 (38.0%)
European recommendations
 Unlikely CF132 (63.5%)54 (75.0%)35 (79.6%)43 (46.7%)
 Inconclusive11 (5.3%)1 (1.4%)1 (2.3%)9 (9.8%)
 CFTR dysfunction30 (14.4%)3 (4.2%)6 (13.6%)21 (22.8%)
 Classic CF35 (16.8%)14 (19.4%)2 (4.5%)19 (20.7%)
  • AZOOSP, obstructive azoospermia; CF, cystic fibrosis; CFTR, cystic fibrosis transmembrane conductance regulator; NPD, nasal potential difference; PANC, idiopathic recurrent acute or chronic pancreatitis; RESP, idiopathic sinopulmonary disease.