Table 2

Breakdown of CFTR mutations in all subjects

GroupsNNo of CFTR mutations*Two CF-causing mutations†
012ConsensusCFTR2‡Both§
RESP6837 (54.4%)15 (22.1%)16 (23.5%)3 (4.4%)1 (1.5%)4 (5.9%)
PANC4221 (50%)9 (21.4%)12 (28.6%)2 (4.8%)02 (4.8%)
AZOOSP9212 (13%)17 (18.5%)63 (68.5%)2 (2.2%)9 (9.8%)11 (12%)
All undiagnosed symptomatic subjects20270 (34.7%)41 (20.3%)91 (45%)7 (3.5%)10 (4.9%)17 (8.4%)
CONTROL10484 (80.8%)18 (17.3%)2 (1.9%)000
HETERO52047 (90.4%)5 (9.6%)000
CFPS641 (1.5%)9 (14.1%)54 (84.4%)18 (28.1%)11 (17.2%)29 (45.3%)
CFPI431 (2.3%)1 (2.3%)41 (95.4%)37 (86%)2 (4.7%)39 (90.7%)
  • *Subjects with none, one or two CFTR mutations.

  • †Subjects with CF-causing mutations on both alleles.

  • ‡Additional subjects with two CF-causing mutations following expansion of the list of CF-causing mutations from 23 (consensus) to 122 (CFTR2) mutations.

  • §Subjects with two CF-causing mutations based upon consensus plus CFTR2.

  • AZOOSP, obstructive azoospermia; CF, cystic fibrosis; CFPI, pancreatic insufficient; CFPS, pancreatic sufficient; CONROL, healthy controls; HETERO, heterozygotes; PANC, chronic/recurrent pancreatitis; RESP, chronic sino-pulmonary disease.