ABCMdb

ABCC7 p.Tyr161Asp

ClinVar:	c.481T>G , p.Tyr161Asp ? , not provided c.482A>G , p.Tyr161Cys ? , not provided c.482A>C , p.Tyr161Ser ? , not provided c.481T>A , p.Tyr161Asn ? , not provided
CF databases:	c.481T>A , p.Tyr161Asn (CFTR1) ? , This putative mutation was detected by DGGE and identified by DNA fluorescent sequencing in an young patient from Southern France suffering from isolated nasal polyposis. He carries the G85E mutation on the other chromosome. c.481T>G , p.Tyr161Asp (CFTR1) ? , The mutation was detected by multiplex heteroduplex analysis on the MDE gel matrix. It was found in one Swedish patient with atypical CF (second mutationL unknown). c.482A>C , p.Tyr161Ser (CFTR1) ? , This mutation was seen in a 6 year-old CF patient whose other CF mutation is [delta]F508. The mutation and polymorphism are on the same chromosome (established in the mother). We do not yet have any clinical information. The patient was referred by S.W. Thames Regional Genetics Service. We have seen this mutation and polymorphism only once in over 100 CF chromosomes screened.
Predicted by SNAP2:	A: D (85%), C: D (80%), D: D (95%), E: D (95%), F: N (61%), G: D (91%), H: D (85%), I: D (85%), K: D (95%), L: D (85%), M: D (91%), N: D (91%), P: D (95%), Q: D (91%), R: D (95%), S: D (91%), T: D (91%), V: D (85%), W: D (85%),
Predicted by PROVEAN:	A: D, C: D, D: D, E: D, F: D, G: D, H: D, I: D, K: D, L: D, M: D, N: D, P: D, Q: D, R: D, S: D, T: D, V: D, W: D,

[switch to compact view]
Comments [show]

None has been submitted yet.

Publications
[hide] Spectrum of mutations in the CFTR gene of patients... Genet Test. 2001 Fall;5(3):235-42. Strandvik B, Bjorck E, Fallstrom M, Gronowitz E, Thountzouris J, Lindblad A, Markiewicz D, Wahlstrom J, Tsui LC, Zielenski J
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.
Genet Test. 2001 Fall;5(3):235-42., [PMID:11788090]

Abstract [show]
Cystic fibrosis (CF) is caused by mutations in the CFTR gene. The spectrum of CFTR mutations varies between populations and depends on different factors, such as ethnic background and geographical location. The extensive CFTR mutation screening of 129 patients with classical or atypical CF from the south-western region of Sweden revealed the presence of 37 CFTR mutations, including 12 novel alleles. The overall mutation detection rate in this study population was 92%, the highest among all tested regions in Sweden. Eight mutations with a frequency above 1% (DeltaF508, 394delTT, R117C, 3659delC, E60X, 1112delT, R764X, and 621 + 1G --> T) accounted for 78% of CF chromosomes and have been recommended for inclusion in the CFTR mutation screening panel for molecular diagnosis of CF in this region. The multiple occurrence of specific CFTR alleles less common than the predominant DeltaF508 mutation (394delTT, R117C, 3659delC) allowed for genotype-phenotype comparisons and revealed consistent relationships between these mutations and disease severity.

Comments [show]

None has been submitted yet.

Sentences [show]
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
94 Missense mutations: Y161D. Login to comment
171 Two of them (V603F and Y161D) are associated with PI, moderate-to-severe lung disease, and elevated sweat chloride levels. Login to comment

[hide] Atypical cystic fibrosis and CFTR-related diseases... Clin Rev Allergy Immunol. 2008 Dec;35(3):116-23. Paranjape SM, Zeitlin PL
Atypical cystic fibrosis and CFTR-related diseases.
Clin Rev Allergy Immunol. 2008 Dec;35(3):116-23., [PMID:18493878]

Abstract [show]
Cystic fibrosis (CF), which is among the most common life-shortening recessive illnesses, is caused by mutations of the CF transmembrane conductance regulator (CFTR) and typically involves chronic infection and progressive obstruction of the respiratory tract as well as pancreatic exocrine insufficiency. Disease severity, to some extent, correlates with organ sensitivity to CFTR dysfunction and to the amount of functional protein, which is influenced by the type of mutation. Atypical CF represents approximately 2% of affected individuals, and includes cases presenting in adolescence or adulthood with pancreatic exocrine sufficiency, normal or borderline sweat chloride concentrations, or with a single predominant clinical feature. This review briefly describes diagnostic methods and phenotypic characteristics of classic and atypical CF, as well as CFTR-related diseases, conditions in which mutated CFTR may contribute to the pathogenesis but do not strictly fit established diagnostic criteria.

Comments [show]

None has been submitted yet.

Sentences [show]
No. Sentence Comment
64 Determination of the transepithelial nasal potential difference has been beneficial in establishing a CF Table 1 Mutations, sites, and molecular consequences associated with either an atypical presentation of CF respiratory disease or pancreatic sufficiency or late-onset pancreatic insufficiency (http:// www.genet.sickkids.on.ca) Mutation Site Consequence Atypical presentation M1210I Exon 19 Met to Ile at 1210 S1455X Exon 24 Ser to Stop at 1455 1811+18G→A Intron 11 mRNA splicing defect L346P Exon 7 Leu to Pro at 346 Y161D Exon 4 Tyr to Asp at 161 R31C Exon 2 Arg to Cys at 31 I752S Exon 13 Ile to Ser at 752 2811G/T Exon 15 Sequence variation Pancreatic sufficiency or late-onset pancreatic insufficiency R600G Exon 13 Arg to Gly at 600 D1152H Exon 18 Asp to His at 1152 Y89C Exon 3 Tyr to Cys at 89 R117H Exon 4 Arg to His at 117 D110E Exon 4 Asp to Glu at 110 296 + 3insT Intron 2 mRNA splicing defect E217G Exon 6a Glu to Gly at 217 V392G Exon 8 Val to Gly at 392 N1088D Exon 17b Asn to Asp at 1088 S737F Exon 13 Missense 1716+1G→A Intron 10 mRNA splicing defect R334W Exon 7 Arg to Trp at 334 R347P Exon 7 Arg to Pro at 347 A455E Exon 9 Ala to Glu at 455 P574H Exon 12 Pro to His at 574 3850-3T→G Intron 19 mRNA splicing defect diagnosis in many atypical cases. Login to comment