ABCC7 p.Glu1104Lys
| ClinVar: |
c.3310G>T
,
p.Glu1104*
D
, Pathogenic
|
| CF databases: |
c.3310G>T
,
p.Glu1104*
D
, CF-causing
c.3310G>A , p.Glu1104Lys (CFTR1) ? , |
| Predicted by SNAP2: | A: D (53%), C: D (53%), D: N (82%), F: D (71%), G: D (71%), H: D (80%), I: D (63%), K: D (85%), L: D (71%), M: D (59%), N: D (66%), P: D (80%), Q: D (63%), R: D (85%), S: D (59%), T: D (53%), V: D (63%), W: D (85%), Y: D (75%), |
| Predicted by PROVEAN: | A: D, C: D, D: N, F: D, G: D, H: D, I: D, K: D, L: D, M: D, N: D, P: D, Q: N, R: D, S: D, T: D, V: D, W: D, Y: D, |
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[hide] Prospective and parallel assessments of cystic fib... Eur J Pediatr. 2012 Aug;171(8):1223-9. Epub 2012 May 12. Krulisova V, Balascakova M, Skalicka V, Piskackova T, Holubova A, Paderova J, Krenkova P, Dvorakova L, Zemkova D, Kracmar P, Chovancova B, Vavrova V, Stambergova A, Votava F, Macek M Jr
Prospective and parallel assessments of cystic fibrosis newborn screening protocols in the Czech Republic: IRT/DNA/IRT versus IRT/PAP and IRT/PAP/DNA.
Eur J Pediatr. 2012 Aug;171(8):1223-9. Epub 2012 May 12., [PMID:22581207]
Abstract [show]
Cystic fibrosis (CF) is a life-threatening disease for which early diagnosis following newborn screening (NBS) improves the prognosis. We performed a prospective assessment of the immunoreactive trypsinogen (IRT)/DNA/IRT protocol currently in use nationwide, versus the IRT/pancreatitis-associated protein (PAP) and IRT/PAP/DNA CF NBS protocols. Dried blood spots (DBS) from 106,522 Czech newborns were examined for IRT concentrations. In the IRT/DNA/IRT protocol, DNA-testing was performed for IRT >/= 65 ng/mL. Newborns with IRT >/= 200 ng/mL and no detected cystic fibrosis transmembrane conductance regulator gene (CFTR) mutations were recalled for a repeat IRT. In the same group of newborns, for both parallel protocols, PAP was measured in DBS with IRT >/= 50 ng/mL. In PAP-positive newborns (i.e., >/=1.8 if IRT 50-99.9 or >/=1.0 if IRT >/= 100, all in ng/mL), DNA-testing followed as part of the IRT/PAP/DNA protocol. Newborns with at least one CFTR mutation in the IRT/DNA/IRT and IRT/PAP/DNA protocols; a positive PAP in IRT/PAP; or a high repeat IRT in IRT/DNA/IRT were referred for sweat testing. CONCLUSION: the combined results of the utilized protocols led to the detection of 21 CF patients, 19 of which were identified using the IRT/DNA/IRT protocol, 16 using IRT/PAP, and 15 using IRT/PAP/DNA. Decreased cut-offs for PAP within the IRT/PAP protocol would lead to higher sensitivity but would increase false positives. Within the IRT/PAP/DNA protocol, decreased PAP cut-offs would result in high sensitivity, an acceptable number of false positives, and would reduce the number of DNA analyses. Thus, we concluded that the IRT/PAP/DNA protocol would represent the most suitable protocol in our conditions.
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No. Sentence Comment
81 According to the protocol, this result indicated the sequencing of the Table 1 Parallel comparison of CF NBS protocols IRT/DNAa /IRT IRT/PAP IRT/PAP/DNAa Newborns screened (N) 106,522 106,522 106,522 IRT positives (N; %) 1,158 (1.09) 3,155 (2.96) 3,155 (2.96) PAP positives (N; %) - 260 (0.24) 260 (0.24) Median age (range) at the availability of DNA-testinga results (days) 36 (9-222b ) - 36 (9-222b ) 1 and/or 2 CF mutations detected (N; %) 76 (0.07) - 27 (0.03) Recalled newborns for repeated IRT examination (N; %) 47 (0.04) - - Positive CF NBS (N; %) 123 (0.12) 260 (0.24) 27 (0.03) Positive IRT in newborns recalled for repeated examination (N) 1 - - ST indicated (N; %) 77 (0.07) 260 (0.24) 27 (0.03) ST carried out (N; % of indicated ST) 72c (93.51) 204c (78.46) 24c (88.89) CF carriers (N) 55 - 12 Prevalence of CF carriers 1 in 21 - 1 in 22 Diagnosed CF patients (N) 19 16 15 False positives based on performed ST (N; % of all cases screened) 99d (0.09) 188 (0.18) 9 (0.01) Newborns with equivocal diagnosis [F508del/R117H-IVS-8 T(7) and ST<30 mmol/L; N] 2 - 0 False negatives (N) 2 5 6 Total of CF patients detected (N) 21e Median age (range) at diagnosis (days) 36 (9-57)e CF prevalence 1 in 5,072e Sensitivity (TP/TP+FN) 0.9048 0.7619 0.7142 Specificity (TN/TN+FP) 0.9991 0.9982 0.9999 PPV (TP/TP+FP) 0.1610 0.0784 0.625 N number, % of all cases screened, TP true positives, FN false negatives, TN true negatives, FP false positives, PPV positive predictive value, ST sweat test a CF-causing mutations covered by Elucigene assays ("legacy" nomenclature) with the CF-EU1Tm accounting for: p.Arg347Pro (R347P), c.2657+ 5G>A (2789+5G>A), c.2988+1G>A (3120+1G>A), c.579+1G>T (711+1G>T), p.Arg334Trp (R334W), p.Ile507del (I507del), p.Phe508del (F508del), c.3718-2477C>T (3849+10kbC>T), p.Phe316LeufsX12 (1078delT), p.Trp1282X (W1282X), p.Arg560Thr (R560T), p.Arg553X (R553X), p.Gly551Asp (G551D), p.Met1101Lys (M1101K), p.Gly542X (G542X), p.Leu1258PhefsX7 (3905insT), p.Ser1251Asn (S1251N), c.1585-1G>A (1717-1G>A), p.Arg117His (R117H), p.Asn1303Lys (N1303K), p.Gly85Glu (G85E), c.1766+1G>A (1898+1G>A), p.Lys684AsnfsX38 (2184delA), p.Asp1152His (D1152H), c.54-5940_273+10250del (CFTRdele2,3), p.Pro67Leu (P67L), p.Glu60X (E60X), p.Lys1177SerfsX15 (3659delC), c.489+1G>T (621+1G>T), p.Ala455Glu (A455E), p.Arg1162X (R1162X), p.Leu671X (2143delT), c.1210-12T[n] (IVS8-T(n) variant), including additional mutations in the CF-EU2Tm : p.Gln890X (Q890X), p.Tyr515X (1677delTA), p.Val520Phe (V520F), c.3140-26A>G (3272-26A>G), p.Leu88IlefsX22 (394delTT), p.Arg1066Cys (R1066C), p.Ile105SerfsX2 (444delA), p.Tyr1092X (C>A) (Y1092X(C>A)), p.Arg117Cys (R117C), p.Ser549Asn (S549N), p.Ser549ArgT>G (S549R T>G), p.Tyr122X (Y122X), p.Arg1158X (R1158X), p.Leu206Trp (L206W), c.1680-886A>G (1811+1.6kbA>G), p.Arg347His (R347H), p.Val739TyrfsX16 (2347delG) and p.Trp846X (W846X) b failed DNA isolation from DBS, including repetition of DNA-testing c deceased patient or non-compliance with referrals (five CF carriers in IRT/DNA/IRT, 56 newborns in IRT/PAP, three CF carriers in IRT/PAP/DNA) d comprising newborns with repeated IRT (47 newborns) e aggregate data from all protocols entire CFTR coding region in both newborns, and led to the identification of p.Ile336Lys (I336K) and p.Glu1104Lys (E1104K) mutations.
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ABCC7 p.Glu1104Lys 22581207:81:3280
status: NEWX
ABCC7 p.Glu1104Lys 22581207:81:3292
status: NEW109 Table 2 False negatives due to mean PAP concentrations below the cut-off IRT (ng/mL) PAP (ng/mL) CFTR Genotypea Sweat chloride concentration (mmol/L) Patient 1 174 0.93 F508del/ F508del 109.6 Patient 2 337 0.49 F508del/ F508del 98.7 Patient 3 203 0.42 F508del/ F508del 103.7 Patient 4 115 0.67 F508del/ I507del 93.2 Patient 5b 87.8 1.43 G542X/ E1104K 74.5 a legacy nomenclature b pancreatic sufficient patient (fecal Elastase-1 level was 507 μg/g) IRT/PAP and IRT/PAP/DNA protocols Five CF patients were false negative within the IRT/PAP protocol due to low PAP concentrations (Table 2).
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ABCC7 p.Glu1104Lys 22581207:109:344
status: NEW[hide] Distribution of CFTR mutations in the Czech popula... J Cyst Fibros. 2013 Sep;12(5):532-7. doi: 10.1016/j.jcf.2012.12.002. Epub 2012 Dec 29. Krenkova P, Piskackova T, Holubova A, Balascakova M, Krulisova V, Camajova J, Turnovec M, Libik M, Norambuena P, Stambergova A, Dvorakova L, Skalicka V, Bartosova J, Kucerova T, Fila L, Zemkova D, Vavrova V, Koudova M, Macek M, Krebsova A, Macek M Jr
Distribution of CFTR mutations in the Czech population: positive impact of integrated clinical and laboratory expertise, detection of novel/de novo alleles and relevance for related/derived populations.
J Cyst Fibros. 2013 Sep;12(5):532-7. doi: 10.1016/j.jcf.2012.12.002. Epub 2012 Dec 29., [PMID:23276700]
Abstract [show]
BACKGROUND: This two decade long study presents a comprehensive overview of the CFTR mutation distribution in a representative cohort of 600 Czech CF patients derived from all regions of the Czech Republic. METHODS: We examined the most common CF-causing mutations using the Elucigene CF-EU2v1 assay, followed by MLPA, mutation scanning and/or sequencing of the entire CFTR coding region and splice site junctions. RESULTS: We identified 99.5% of all mutations (1194/1200 CFTR alleles) in the Czech CF population. Altogether 91 different CFTR mutations, of which 20 were novel, were detected. One case of de novo mutation and a novel polymorphism was revealed. CONCLUSION: The commercial assay achieved 90.7%, the MLPA added 1.0% and sequencing increased the detection rate by 7.8%. These comprehensive data provide a basis for the improvement of CF DNA diagnostics and/or newborn screening in our country. In addition, they are relevant to related Central European populations with lower mutation detection rates, as well as to the sizeable North American "Bohemian diaspora".
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No. Sentence Comment
62 There are over 10 million inhabitants in the country, which according to population genetic analyses, is a representative of the CE ethnic composition [3], with significant overlaps with Table 1 (continued) Mutations/HGVS nomenclature/ Mutations/traditional nomenclature, legacy name/ Legacy exon/intron No. of alleles % 65. c.2290CNT R764X# Ex13 1 0.08 66. c.2490+1GNA 2622+1GNA# In13 1 0.08 67. c.2538GNA W846X*# Ex14a 1 0.08 68. c.2551CNT R851X# Ex14a 1 0.08 69. c.2589_2599delAATTTGGTGCT 2721del11 Ex14a 1 0.08 70. c.2705delG 2837delG Ex15 1 0.08 71. c.2789delG 2921delG Ex15 1 0.08 72. c.2803_2813delCTACCACTGGT 2935del11 Ex15 1 0.08 73. c.2856GNC M952I Ex15 1 0.08 74. c.2991GNC L997F# Ex17a 1 0.08 75. c.3106delA 3238delA Ex17a 1 0.08 76. c.3136GNT E1046X Ex17a 1 0.08 77. c.3139GNC G1047R Ex17a 1 0.08 78. c.3196CNT R1066C*# Ex17b 1 0.08 79. c.3196CNG R1066G Ex17b 1 0.08 80. c.3302TNG M1101R Ex17b 1 0.08 81. c.3310GNA E1104K Ex17b 1 0.08 82. c.3353CNT S1118F Ex17b 1 0.08 83. c.3472CNT R1158X*# Ex19 1 0.08 84. c.3587CNG S1196X# Ex19 1 0.08 85. c.3708delT 3840delT Ex19 1 0.08 86. c.3937CNT Q1313X# Ex21 1 0.08 87. c.3971TNC L1324P Ex22 1 0.08 88. c.4003CNT L1335F Ex22 1 0.08 89. c.4004TNC L1335P Ex22 1 0.08 90. c.4097TNA I1366N Ex22 1 0.08 91. c.4426CNT Q1476X Ex24 1 0.08 92.
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ABCC7 p.Glu1104Lys 23276700:62:928
status: NEW