ABCMdb

ABCC7 p.Gly27Arg

ClinVar:	c.80G>A , p.Gly27Glu ? , not provided c.79G>C , p.Gly27Arg ? , not provided c.79G>T , p.Gly27* ? , not provided c.79G>A , p.Gly27Arg ? , not provided
CF databases:	c.80G>A , p.Gly27Glu (CFTR1) D , This mutation, in exon 2, was found in a French male patient and was detected by DGGE using chemical clamps and identified by direct sequencing : G27E (G->A at 212). This mutation has been found in one among 50 non-[delta]F508 CF chromosomes. The patient is sufficient pancreatic, presents a mild pulmonary form and male infertility. He has the [delta]F508 mutation on the other chromosome. c.79G>T , p.Gly27* D , CF-causing c.79G>A , p.Gly27Arg (CFTR1) D , This mutation, in exon 2, was detected by SSCA analysis. The G27R (G>A at 211) mutation was found in one argentinean patient. The male patient died at 14 years old, diagnosed at 2 months of age, who carries the F508del mutation on the other chromosome. c.79G>C , p.Gly27Arg (CFTR1) ? , This mutation was identified on one Czech CF chromosome
Predicted by SNAP2:	A: D (63%), C: D (66%), D: D (85%), E: D (85%), F: D (85%), H: D (80%), I: D (85%), K: D (85%), L: D (85%), M: D (80%), N: D (71%), P: D (85%), Q: D (80%), R: D (85%), S: D (63%), T: D (75%), V: D (80%), W: D (91%), Y: D (85%),
Predicted by PROVEAN:	A: D, C: D, D: D, E: D, F: 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, Y: D,

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[hide] Mutational spectrum of cystic fibrosis patients fr... Mol Genet Metab. 2006 Apr;87(4):370-5. Epub 2006 Jan 19. Ramirez AM, Ramos MD, Jimenez J, Ghio A, de Botelli MM, Rezzonico CA, Marques I, Pereyro S, Casals T, de Kremer RD
Mutational spectrum of cystic fibrosis patients from Cordoba province and its zone of influence: implications of molecular diagnosis in Argentina.
Mol Genet Metab. 2006 Apr;87(4):370-5. Epub 2006 Jan 19., [PMID:16423550]

Abstract [show]
Cystic Fibrosis (CF) is an autosomal recessive disorder affecting 1/2000-4000 newborns in Caucasian populations. This lethal disease mainly affects respiratory and digestive organs as well as fertility in man. So far, the CF prevalence and mutational spectrum have showed specificity among populations and regions, making it necessary to establish them in each one. In this study, we present the spectrum and frequency of CFTR gene mutations in CF patients from Cordoba (a province with 3.1 millions inhabitants in the middle of Argentina) and its zone of influence, to offer an accurate genetic testing. The study includes 78 families in which 98 patients fulfilled clinical criteria to CF diagnosis. The strategy for the molecular diagnosis comprised analysis of 21 common mutations, microsatellite haplotypes and the complete CFTR gene analysis using scanning techniques followed by sequencing of the abnormal migration patterns. Our first step led us to the identification of 10 mutations that represented 76% of alleles. Another four mutations (p.R1066C, c.1811 + 1.6 kbA > G, c.711 + 1G > T, and p.G85E) were found based on the microsatellite haplotype-mutation association. Finally, 14 mutations were characterized after the CFTR gene scanning, three of them are not previously described (p.G27R, c.622-2A > G, and p.W277R). In summary, we have identified 27 mutations accounting for 94.23% of CF alleles. This characteristic mutational spectrum highlights the 14 most frequent mutations (>1%) in the Cordoba region.

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No. Sentence Comment
9 Finally, 14 mutations were characterized after the CFTR gene scanning, three of them are not previously described (p.G27R, c.622-2A> G, and p.W277R). Login to comment
73 Among these 13 mutations, we detected three novel CFTR mutations (validation of mutations according to HUGO), two missense changes (p.G27R and p.W277R) and one splice site mutation (c.622-2A > G) (Table 3). Login to comment
77 The p.G27R missense mutation was found in a male patient diagnosed at 2 months and who died at 14 years. Login to comment
85 Haplotype (n D 20) No. of chromosomes (n D 64)a Mutations associated (No. of chromosomes) 23-31 14 p.F508del 17-31 7 p.F508del 17-7 7 p.R1066C (3), p.W277R, c.2789 + 5G > A, c.3120 + 1G > A, c.3849 + 10KbC > T 16-7 6 c.3272-26A > G (2), p.G27R, c.622-2A > G, unknown (2) 16-32 5 p.S589I (2), unknown (3) 16-30 3 IVS8-5T (2), unknown 23-33 2 p.G542X, p.R1283M 23-32 2 p.G542X 23-30 2 p.F508del, p.N1303K 24-31 2 p.N1303K 16-24 2 p.G85E 16-31 3 c.1898 + 1G > A, p.W1089X, unknown 16-46 2 c.1811 + 1.6KbA > G 16-25 1 c.711 + 1G > T 16-33 1 Unknown 16-44 1 c.1898 + 1G > A 16-45 1 p.Y913C 16-47 1 c.4005 + 1G > A 17-30 1 Unknown 23-7 1 [c.3199_3204delATAGTG; p.I148T] Table 2 Frequency of the mutations in the 78 CF Argentinean patients of Córdoba region a IdentiWed novel mutations. Login to comment
98 About of the novel mutations, our results suggest that p.G27R correlate with a severe phenotype likewise that p.G27X previously described, while another mutation in the same codon, p.G27E, has a milder clinical presentation of CF with late onset of symptoms, diagnosed at 41 years with CBAVD, pancreatic suYciency and mild pulmonary disease [20,21]. Login to comment
103 Novel mutationsa Nucleotide change Exon/ Intron Consequence Haplotype IVS 8CA- IVS17bTA Detection method Clinical datab p.G27R G > A at 211 E.2 Gly > Arg 16-7 SSCA and Seq. Login to comment
113 Missense mutations, p.G27R and p.W277R were identiWed in CF patients with severe phenotype and it may postulate that both changes aVect the CFTR activity. Login to comment
114 The p.G27R in the N-terminal region could inXuence the interaction between CFTR and proteins that regulate its expression [23]. Login to comment
111 Missense mutations, p.G27R and p.W277R were identiWed in CF patients with severe phenotype and it may postulate that both changes aVect the CFTR activity. Login to comment
112 The p.G27R in the N-terminal region could inXuence the interaction between CFTR and proteins that regulate its expression [23]. Login to comment

[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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46 [874GNA]+[2126GNA] E292K/R709Q Ex7/Ex13 4 0.33 22. c.1585-1GNA 1717-1GNA*# In10 4 0.33 23. c.3454 GNC D1152H*# Ex18 4 0.33 24. c.3484CNT R1162X*# Ex19 4 0.33 25. c.4242+1GNT 4374+1GNT In23 4 0.33 26. c.1000CNT R334W*# Ex7 3 0.25 27. c.1767-?_2619+?del CFTRdele13,14a Ex13-Ex14a 3 0.25 28. c.3468+2_3468+3insT 3600+2insT In18 3 0.25 29. c.3469-?_3717+?dup CFTRdup19 Ex19 3 0.25 30. c.3964-78_4242+577del CFTRdele22,23# Ex22-Ex23 3 0.25 31. c.53+1GNT 185+1GNT In1 2 0.17 32. c.54-1161_164+1603del2875 CFTRdele2 Ex2 2 0.17 33. c.169TNG W57G Ex3 2 0.17 34. c.254GNA G85E*# Ex3 2 0.17 35. c.274GNT E92X# Ex4 2 0.17 36. c.328GNC D110H# Ex4 2 0.17 37. c.579+3ANG 711+3ANG# In5 2 0.17 38. c.3528delC 3659delC*# Ex19 2 0.17 39. c.4127_4131delTGGAT 4259del5 Ex22 2 0.17 40. c.1-?_1584+?del CFTRdele1,10 Ex1-Ex10 1 0.08 41. c.115CNT Q39X# Ex1 1 0.08 42. c.79GNC G27R Ex2 1 0.08 43. Login to comment