Appendix 1

- A description of the consequence, clinical significance, genetic variation and condition of the 26 identified CFTR variants.

Variant #cDNA NameConsequenceClinical significanceVariation LocationConditions(s)
1c.1521_1523delCT Tdeletion of Phe at 508PathogenicNM_000492.3(CFTR):c.1521_1523delCTT (p.Phe508delPhe)Cystic fibrosis, Hereditary pancreatitis,
2c.1418delGframeshiftPathogenicNM_000492.3(CFTR):c.1418delG (p.Gly473Glufs)Cystic fibrosis, not provided
3c.579+1G>TmRNA splicing defectPathogenicNM_000492.3(CF7R):c.579+1 G>TCystic fibrosis, Hereditary pancreatitis, not specified,
4c.2988+1G>AmRNA splicing defectPathogenicNM_000492.3(CFTR):c.2988+1G>ACystic fibrosis, Hereditary pancreatitis
5c.3419T>AMettoLysat1140N/ANM_000492.3(CFTR):c.3419T>A (p.Met1140Lys)Cystic fbrosis
6c.4124A>CHis to Pro at 1375Likely pathogenicNM_000492.3(CFTR):c.4124A>C (p.His1375Pro)Cystic fibrosis
7c.3700A>Glie to Val at 1234PathogenicNM_000492.3(CFTR):c.3700A>G(p.lle1234Val)Cystic fbrosis
8c.2739T>ATyr to Stop at 913PathogenicNM 000492.3<CFTR):c.2739T>A (p.Tyr913Ter)Cystic Fibrosis
9c.443T>Clie to Thr at 148Conflicting interpretations of pathogenicityNM 000492.3(CFTR):c.443T>C (p.lle148Thr) 
10c.2657+5G>AmRNA splicing defectPathogenicNM_000492.3(CFTR):c.2657+5G>A 
111549 deIG    
12delExon19-21    
13c.16970A Uncertain significanceNM_000492.3(CFTR):c.1697C>A (pAla566Asp)Cystic fibrosis
14c.2620-26A>GmRNA splicing defectLikely benign(2);Uncertain significance(1)NM_000492.3(CFTR):c.2620-26A>G 
15c.2051_2052delAA insGframeshiftPathogenicNM_000492.3(CFTR):c.2051_2052delAAinsG (pj.ys684Serfs)Cystic fibrosis
16c.1660_1661insA NotspecifcNM_000492.3(CFTR):c.1660_1661insA (pAla554Aspfs)N/A
17c.4251delAframeshiftpathogenic(p.Glu1418Argfs)N/A
18c.3717+12191C>Tcreation of splice acceptor sitePathogenicNM_000492.3(CFTR):c.3718-2477C>TCystic fbrosis
19c.220C>TArg to Trp at 74Uncertain significanceNM_000492.3(CFTR):c.220C>T (p.Arg74Trp)Cystic fibrosis
20c.530T>Clie to Thr at 177Uncertain significanceNM_000492.3(CFTR):c.530T>C (p.lie177Thr)Cystic Fibrosis
21c.1408A>Gsequence variationBenign/Likely benignNM_000492.3(CFTR):c.1408G>A(p.Val470Met) 
22c.2562T>Gsequence variationBenign/Likely benignNM_000492.3(CFTR):c.2562T>G(p.Thr854=) 
23c.4389G>Asequence variationBenign/Likely benignNM_000492.3(CFTR):c.4389G>A(p.Gln1463=) 
24c.869+11C>Tsequence variationBenign/Likely benignNM_000492.3(CFTR):c.869+11C>T 
25c.91C>T Conflicting interpretations of pathogenicityNM_000492.3(CFTR):c.91C>T(p.Arg31Cys) 
26c.1399C>Tsequence variationConflicting interpretations of pathogenicityNM_000492.3(CFTR):c.1399C>T (p.Leu467PheCystic fibrosis, not provided