ABCMdb

ABCC7 p.Ser589Asn

ClinVar:	c.1766G>T , p.Ser589Ile ? , not provided c.1766G>C , p.Ser589Thr ? , not provided c.1766G>A , p.Ser589Asn ? , not provided
CF databases:	c.1766G>A , p.Ser589Asn (CFTR1) ? , The above mutation was detected by DGGE and characterized by direct sequencing. S586N probably affects RNA splicing. It was found in a male with CF carrying [delta]F508 on the other allele. The change was not observed in 100 other CFTR alleles from 50 unrelated individuals without family history of CF. c.1766G>T , p.Ser589Ile (CFTR1) ? , This mutation was detected by DGGE and identified by direct sequencing. The mutation was found in a CF patient who is also heterozygous for [delta]F508 and G576A (phase yet to be established). The DGGE primers were generously supplied by Prof Michel Goossens on behalf of the European Community Concerted Action for the Co-ordination of Cystic Fibrosis Research and Therapy. We have seen this mutation only once in over 200 non-[delta]F508 chromosomes screened, in this patient referred by the East Anglican Regional Genetics Service at Cambridge (UK).
Predicted by SNAP2:	A: N (82%), C: N (61%), D: N (78%), E: N (78%), F: D (63%), G: N (82%), H: N (82%), I: N (61%), K: N (93%), L: N (66%), M: D (53%), N: N (87%), P: N (61%), Q: N (87%), R: N (82%), T: N (87%), V: N (66%), W: D (66%), Y: D (59%),
Predicted by PROVEAN:	A: N, C: D, D: N, E: N, F: D, G: N, H: N, I: D, K: N, L: D, M: N, N: N, P: N, Q: N, R: N, T: N, V: D, W: D, Y: N,

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Publications
[hide] Mutation analysis of the cystic fibrosis transmemb... Eur J Hum Genet. 2003 Sep;11(9):687-92. Perri F, Piepoli A, Stanziale P, Merla A, Zelante L, Andriulli A
Mutation analysis of the cystic fibrosis transmembrane conductance regulator (CFTR) gene, the cationic trypsinogen (PRSS1) gene, and the serine protease inhibitor, Kazal type 1 (SPINK1) gene in patients with alcoholic chronic pancreatitis.
Eur J Hum Genet. 2003 Sep;11(9):687-92., [PMID:12939655]

Abstract [show]
Susceptibility to alcoholic chronic pancreatitis (ACP) could be genetically determined. Mutations in cationic trypsinogen (PRSS1), cystic fibrosis transmembrane conductance regulator (CFTR), and serine protease inhibitor, Kazal type 1 (SPINK1) genes have been variably associated with both the hereditary and the idiopathic form of chronic pancreatitis (CP). Our aim was to analyze the three genes in ACP patients. Mutational screening was performed in 45 unrelated ACP patients and 34 patients with alcoholic liver disease (ALD). No mutation of PRSS1 was found in ACP and ALD patients. Three mutations of CFTR were detected in four ACP patients with a prevalence (8.9%) not significantly different from that observed (3.0%) in ALD patients and from that expected (3.2%) in our geographical area. Neither compound heterozygotes for CFTR nor trans-heterozygotes for CFTR/SPINK1 were found. One ACP patient (2.2%) was found to carry the most common mutation (N34S) of SPINK1 compared to none of the ALD patients (P=NS). In five other patients (two with ACP and three with ALD) other rare variants, including P55S, were found. In contrast with the hereditary and the idiopathic forms of CP, in which mutations of PRSS1, CFTR, and SPINK1 genes may occur, ACP is still a "gene(s)-orphan" disease. The supposed genetic susceptibility to ACP relies on other yet unknown gene(s) which could affect the alcohol metabolism or modulate the pancreatic inflammatory response to alcohol abuse.

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34 Other seven mutations, frequently observed in Italian CF patients (Q552X; 711+5G4A; 2790-2A4G; S589N; T338I; 1898+3A4G, and 1717-8G4A), were examined by sequencing. Login to comment

[hide] Indirect CFTR mutation identification by PCR/OLA a... Genet Test. 2005 Winter;9(4):285-91. Stanziale P, Savino M, De Bonis P, Granatiero M, Zelante L, Bisceglia L
Indirect CFTR mutation identification by PCR/OLA anomalous electropherograms.
Genet Test. 2005 Winter;9(4):285-91., [PMID:16379540]

Abstract [show]
Mutations of CFTR gene are responsible for cystic fibrosis (CF) and other clinical conditions such as congenital absence of the vas deferens (CAVD), chronic pancreatitis (IP), and idiopathic disseminated bronchiectasis (DBE) classified as CFTR-related disorders. The PCR/OLA assay is designed to detect 31 known mutations including the 24 most common CF mutations worldwide, as identified by the CF Consortium. In order to define the CFTR genotype a series of 1812 individuals from central-southern Italy with and without CF manifestations were screened by using the PCR/OLA assay. Here we report the description of five cases of anomalous electropherograms obtained after PCR/OLA analysis, that led to the identification, in the homozygous state, of two point mutations (D110H and S589N) not included in the assay test panel, a large gene deletion (CFTRdel14b_17b), and an exonic polymorphism (c.4002A > G). Haplotype and real time PCR analysis were also performed in the subject carrying the large CFTR deletion. The study demonstrates that the PCR/OLA assay, besides being an efficient and user-friendly method to screen known mutations in the CFTR gene, may also function as a mutation/polymorphism-scanning assay, at least for certain nucleotide changes located in some critical regions of the gene.

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2 Here we report the description of five cases of anomalous electropherograms obtained after PCR/OLA analysis, that led to the identification, in the homozygous state, of two point mutations (D110H and S589N) not included in the assay test panel, a large gene deletion (CFTRdel14b_17b), and an exonic polymorphism (c.4002A Ͼ G). Login to comment
46 B: Sequencing analysis of exon 12 in case 2 and wild-type control sample. The arrow indicates the nucleotide change leading to the S589N mutation. Login to comment
50 FREQUENCY DISTRIBUTION OF CFTR MUTATIONS IDENTIFIED IN 116 PATIENTS WITH CYSTIC FIBROSIS ORIGINATING FROM CENTRAL-SOUTHERN ITALY Mutations Allele frequency (%) F508del 47.41 G542X 9.48 N1303K 5.60 G85E 5.17 2789ϩ5GϾA 1.29 621ϩ1G-ϾT 1.29 R347P 1.29 R553X 1.29 S589N 1.29 W1282X 1.29 CFTRdele14b-17b 0.86 1717-1G-ϾA 0.43 2183 AA-ϾG 0.43 R1162X 0.43 R334W 0.43 711ϩ5G-ϾA 0.43 3849ϩ1OKbC-ϾT 0.43 Unidentified 21.12 A B C D GTTG-3Ј), 14bF (5Ј-GGGAGGAATAGGTGAAGAT-3Ј) and 14bR (5Ј-AATCCACTATGTTTGTATGTA-3Ј), 17bF (5Ј-AA- TGACATTTGTGATATGAT-3Ј) and 17bR (5Ј-ACTTTAG- CTAAGCATTTAAG-3Ј), respectively. Login to comment
66 Sequencing of exon 12 and flanking intronic regions revealed the presence of the nucleotide transition G to A at position c.1898 in the homozygous state generating the substitution of asparagine for serine at codon 589 (S589N) (Fig. 2B). Login to comment
118 In addition, because the D110H and S589N changes, similar to CFTRdel14b_17b, are rare mutations (CF Genetic Analysis Consortium: www.genet.sickkids.on.ca/CFTR) and the c.4002A Ͼ G allelic frequency is 1.32%, as resulted by the analysis performed in 113 control individuals from central-southern Italy (data not shown), it seems to be reasonable to postulate consanguinity in all the families. Login to comment

[hide] Extended gene analysis can increase specificity of... Acta Paediatr. 2006 Nov;95(11):1424-8. Merelle ME, Scheffer H, De Jong D, Dankert-Roelse JE
Extended gene analysis can increase specificity of neonatal screening for cystic fibrosis.
Acta Paediatr. 2006 Nov;95(11):1424-8., [PMID:17062471]

Abstract [show]
AIM: To assess whether carriers and patients can be accurately identified by extended gene analysis for cystic fibrosis (CF) in dried blood spots. METHODS: A blinded analysis was performed in 10-mm2 blood spots on Guthrie cards, punched as if to remove material for the IRT test, from 10 CF patients and 10 carriers with known CF mutations. Genomic DNA was isolated. Aliquots of 1 microl dissolved DNA were used for subsequent PCRs. Analysis of the deltaF508 mutation was followed by an oligonucleotide ligation assay. Denaturing gradient gel electrophoresis of the whole CFTR gene was carried out in samples with only one identified mutation. Amplicons revealing an aberrant pattern were sequenced. RESULTS: In all cases, the blood-spot genotype was identical to that previously determined from whole-blood analysis. Estimated time needed to complete the procedure in a series of Guthrie cards was 3-4 wk. CONCLUSION: Extended gene analysis in dried blood spots can discriminate CF patients and carriers. If proven equally reliable in larger series, an approach to neonatal screening in which tests are only considered as screen positive when two CF mutations are found is possible. This can increase the specificity of the screening programme, and carrier detection can practically be avoided.

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58 Results Reliability of the extended gene analysis The following mutations were found in the study population: DF508, 3659delC, R553X, S589N, R1070Q and E60X (Table I). Login to comment
59 The 3659delC, R553X, S589N and R1070Q mutations were identified by OLA analysis. Login to comment
94 Genotypes Number DF508/DF508 5 DF508/3659delC 1 DF508/R553X 1 DF508/S589N 1 DF508/R1070Q 1 DF508/E60X 1 DF508/N 8 3659delC/N 1 S589N/N 1 Total 20 N: no CFTR mutation. Login to comment