Table 1

The CFTR genotypes and clinical details for a panel of 31 atypical CF patients from Northern Ireland

Patient CFTR mutations Tn genotype1-150 Sex/age (y) Sweat chloride1-151 Bacterial infection1-152 Pancreatic status1-153 Shwachman score3 FEV1%1-154
1ΔF508/R75Q + 5T9/(11) 5M/3293PAPI18/2580
2ΔF508/R117H + 5T9/(12) 5M/974HIPI21/2590
3ΔF508/R75Q9/7F/3265nPS23/2592
4ΔF508/5T9/(11) 5M/783nPS24/25
5ΔF508/U9/7F/2381HIPS19/2587
6ΔF508/U9/7F/1163nPS23/25103
7ΔF508/U9/7F/24103PAPI13/2566
8ΔF508/U9/7F/1383nPS18/2581
9R75Q/U7/7F/20117HIPI20/2588
10R75Q/U7/7M/684HIPS19/25
11R75Q/U7/7M/3396nPI21/2586
12S1235R/Ux/xF/1869HIPI24/2590
13S1235R/U7 or 9/7 or 9M/2276nPI20/25119
14R117H + 5T/U(12) 5/7M/1791PAPI20/2577
15R297Q + 5T/U(11) 5/7F/1462nPI
165T/U(11) 5/7M/1379nPI21/2575
175T/U(12) 5/7F/2074nPS22/25100
185T/U(11) 5/7M/2855nPI19/2568
19U/U7/7M/858HIPS19/2594
20U/U7/9M/2674nPS23/25106
21U/U9/7M/855HIPS22/25
22U/U7/7M/877nPS21/25
23U/U7/9M/1258HIPI21/2592
24U/U7/7M/1261nPI19/2591
25U/U7/7M/2172nPS22/2596
26U/U7/7F/789nPI21/2587
27U/U7/7M/865nPS23/25
28U/U7/7F/1578HIPI20/2576
29U/U7/7F/28111PAPI16/2572
30U/U9/7M/1084nPS20/2581
31U/U9/7M/966nPI22/2593
  • 1-150 The number of TG repeats (IVS8GT) upstream of the Tn tract is given in brackets only before a T5 score as their number can modulate alternative splicing only when this is activated by the T5 allele.16 U = unknown (no mutation detected), M = male, F = female, x = uncharacterised.

  • 1-151 High sweat levels, diagnostic of CF, are those above 70 mmol/l chloride, borderline levels are 40–70 mmol/l, and normal levels are below 40 mmol/l.17 In the atypical cohort, 20 patients have high sweat levels and 11 have borderline values.

  • 1-152 HI = Haemophilus influenza, PA =Pseudomonas aeruginosa, n = no bacterial growth detected.

  • 1-153 PI = pancreatic insufficient, PS= pancreatic sufficient.

  • 1-154 FEV1/FVC % = forced expiratory volume in one second / forced vital capacity, as a percentage. — = no value available.