ABCMdb

ABCC7 p.Glu1401*

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Publications

PMID: 11788090 [PubMed] Strandvik B et al: "Spectrum of mutations in the CFTR gene of patients with classical and atypical forms of cystic fibrosis from southwestern Sweden: identification of 12 novel mutations."

No. Sentence Comment

27 MUTATIONS IDENTIFIED IN 258 CHROMOSOMES IN THE CF POPULATION ATTENDING THE SOUTH-WESTERN SWEDISH CF CENTRE Location in the Frequency of Mutation gene, exon Number of mutations mutation (%) Homozygotes Heterozygotes DF508 10 161 62.4 56 49 394delTT 3 13 5.0 3 7 R117C 4 7 2.7 7 3659delC 19 5 1.9 5 E60X 3 4 1.6 4 1112delT 7 4 1.6 1 2 R764X 13 4 1.6 1 2 621 1 1G ® T 4 3 1.2 3 G551D 11 2 0.8 2 I506L 10 2 0.8 2 N1088D (R75Q) 17b 2 0.8 2 Q1238X 19 2 0.8 2 R117H (IVS8-5T) 4 2 0.8 2 V603F (IVS8-5T) 13 2 0.8 2 1716G ® A 10 2 0.8 2 R75Q 3 2 0.8 2 R533X 11 1 0.4 1 2329A ® G Promoter 1 0.4 1 297-3 C ® A 2 1 0.4 1 Y161D 4 1 0.4 1 994del9 Exon/intron 6b 1 0.4 1 1154insTC 7 1 0.4 1 W361R 7 1 0.4 1 T338I 7 1 0.4 1 1249-5A ® G Intron 7 1 0.4 1 1717-2A ® G Intron 10 1 0.4 1 R560T 11 1 0.4 1 E1401X 23 1 0.4 1 3126del4 17a 1 0.4 1 S945L 15 1 0.4 1 R668C 13 1 0.4 1 2622 1 2del6 Intron 13 1 0.4 1 R1162Q Exon 19 1 0.4 1 3849 1 10kbC ® T Intron 19 1 0.4 1 R74W Exon 3 1 0.4 1 2363C ® T Promoter 1 0.4 1 IVS8-5Ta Intron 8 1 0.4 1 Unidentified 20 7.8 Total 258 100 61 116 The new mutations are displayed in bold. Login to comment
75 CLINICAL DATA FOR THE CF PATIENTS CARRYING NEW MUTATIONS Age PI Lung Sweat (years) at or disease Cl Mutations diagnosis PSb (severity) (mmol/liter) Additional symptoms Frameshift 1112delT/1112delT 4 PI 111 110 1112delT/DF508 0.3 PI 111 112 1112delT/DF508 0.2a PI 111 110 3126del4/E60X 2 PI 11 130 994del9/DF508 0.08 PI 2 120 Meconium ileus RNA splice 297-3C ® A/DF508 0.3 PI 1 120 2622 1 2del6/DF508 0.25 PI 111 100 Nonsense E1401X/unknown 6 PS 2 52 Poor growth, fat malabsorption, abnormal electrophysiological response in the intestinal mucosal biopsy Missense V603F, IVS8-5T/DF508 2 PI 1 101 N1088D, R75Q/DF508 4a PS 2 78 N1088D, R75Q/DF508 2 PS 2 75 Y161D/DF508 0.4 PI 1 83 Malabsorption I506L/DF508 42.5 PS 111 103 I506L/3659delC 30 PS 111 80 R1162Q/unknown nvc PS 1 6 Frequent pneumonias V603F, IVS8-5T/unknown nvc PS (1) 24 Sinusitis, severe recurrent hypoglycemia, nasal polyps, abdominal pain Promoter? Login to comment
86 E1401X. Login to comment
91 He had a typical for CF electrophysiological response in the intestinalmucosal biopsy (Hallberg et al., 2000).Because the second mutation is unknown, the phenotypic status of the E1401X cannot be established. Login to comment
158 Interestingly,one of these mutations (E1401X) is associated with a very mild CF presentation (age at diagnosis, 6 years; borderline sweat chloride levels of 52 mmol/liter, PS, and no lung symptoms). Login to comment

PMID: 14696845 [PubMed] Gronowitz E et al: "Association between serum oncofetal antigens CA 19-9 and CA 125 and clinical status in patients with cystic fibrosis."

No. Sentence Comment

44 Severe mutations (1154insTC, E1401X, Q1238X) were found together with one unknown mutation in three pancreatic sufficient patients. Login to comment

PMID: 17413420 [PubMed] Grangeia A et al: "Molecular characterization of the cystic fibrosis transmembrane conductance regulator gene in congenital absence of the vas deferens."

No. Sentence Comment

142 In fact, they occur in highly conserved regions of the CFTR protein, which share 100% amino acid sequence homology between species48 and affect the NBD1, NBD2, and transmembrane regions of the protein, which are known to regulate chloride conductance and permeability.49-51 P439S was previously reported in a child with CF with pancreatic insufficiency and mild lung disease, in association with the P439S/R688C genotype.52 The E1401K mutation occurs at a position in which other mutations, E1401X and E1401A, have been described in patients with CF with pancreatic insufficiency.8 Some difficulties in defining CF or CAVD-causing mutations were observed with some missense mutations.6,27 G576A and R668C have been found independently, in pairs, or combined with the D443Y mutation on the same chromosome in patients withaCF-relatedsyndrome.Inaccordancewithpreviousstudies, we expected that G576A and R668C were located in cis in two patients and combined with D443Y in the same chromosome in two patients.6,9,12 Although initially described as polymorphisms,27 they were later considered mild mutations associated with the CBAVD phenotype when combined in trans with the severedeltaF508mutation.53 However,ourpresentresultssuggest they might also cause the CAVD phenotype when associated with other mild CFTR mutations, because three of four patients carry- ingthesecomplexallelesharboredamildorverymildmutationin the other chromosome (D443Y-G576A-R668C/3272-26A¡G, Table 5 Comparative analysis of CFTR mutation allelic frequencies (%) in patients with congenital absence of the vas deferens Countries Patients T5 allele DeltaF508 R334W R117H References Argentina 36 NA 20.8 NA 5.6 43 Austria 22 NA 13.6 NA 9.1 44 Italy 12 8.3 29.2 NA 4.2 39 The Netherlands 21 9.5 19.0 NA 21.4 38 Germany 106 12.3 26.4 0.5 11.3 30 Greece 14 14.3 14.3 NA NA 32 France 800 16.3 21.8 NA 4.4 6 United States 92 17.9 21.2 NA 2.2 41 Canada 74 18.2 16.9 1.4 6.1 5 Turkey 51 19.6 2.9 NA NA 35 Brazil 17 20.6 11.7 NA 2.9 34 Spain 134 20.9 16.0 0.4 3.0 33 Iran 113 25.7 12.4 0.9 3.5 37 Egypt 16 43.7 6.2 NA NA 40 Taiwan 27 44.4 NA NA NA 42 Portugal 45 31.1 23.3 6.7 4.4 13, 36, PS NA, not available; PS, present study. Login to comment