ABCC7 p.Pro1290Thr
| ClinVar: |
c.3870A>G
,
p.Pro1290=
N
, Benign/Likely benign
c.3868C>T , p.Pro1290Ser ? , not provided |
| CF databases: |
c.3868C>A
,
p.Pro1290Thr
(CFTR1)
?
, The mutation was detected by DGGE analysis and characterized by direct sequencing. We have seen it only twice, in over 500 control chromosomes from Italian population.
c.3868C>T , p.Pro1290Ser (CFTR1) ? , The missense mutation was detected by DGGE and identified by direct sequencing. It was found on the paternal chromosome in a CBAVD patient, with his maternal chromosome carrying 3272-26A→G. The mutation was not observed in 218 other CFTR alleles from 109 healthy fertile males, 90 chromosomes from 45 CBAVD patients, 30 chromosomes from 15 children carrying one CF mutation and 10 chromosomes from 5 CF patients. This mutation creates an EcoRV restriction site. |
| Predicted by SNAP2: | A: D (59%), C: D (53%), D: D (71%), E: D (75%), F: D (75%), G: D (71%), H: D (66%), I: D (71%), K: D (80%), L: N (72%), M: D (66%), N: N (53%), Q: D (63%), R: D (80%), S: N (53%), T: N (82%), V: D (66%), W: D (80%), Y: D (75%), |
| 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, Q: D, R: D, S: D, T: D, V: D, W: D, Y: D, |
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[hide] Gender-sensitive association of CFTR gene mutation... Mol Hum Reprod. 2005 Aug;11(8):607-14. Epub 2005 Aug 26. Morea A, Cameran M, Rebuffi AG, Marzenta D, Marangon O, Picci L, Zacchello F, Scarpa M
Gender-sensitive association of CFTR gene mutations and 5T allele emerging from a large survey on infertility.
Mol Hum Reprod. 2005 Aug;11(8):607-14. Epub 2005 Aug 26., [PMID:16126774]
Abstract [show]
Human infertility in relation to mutations affecting the cystic fibrosis transmembrane regulator (CFTR) gene has been investigated by different authors. The role of additional variants, such as the possible forms of the thymidine allele (5T, 7T and 9T) of the acceptor splice site of intron 8, has in some instances been considered. However, a large-scale analysis of the CFTR gene and number of thymidine residues, alone and in combination, in the two sexes had not yet been addressed. This was the aim of this study. Two groups were compared, a control group of 20,532 subjects being screened for perspective reproduction, and the patient group represented by 1854 idiopathically infertile cases. Analyses involved PCR-based CFTR mutations assessment, reverse dot-blot IVS8-T polymorphism analyses, denaturing gradient gel electrophoresis (DGGE) and DNA sequencing. The expected 5T increase in infertile men was predominantly owing to the 5/9 genotypic class. The intrinsic rate of 5T fluctuated only slightly among groups, but some gender-related differences arose when comparing their association. Infertile men showed a significantly enriched 5T + CFTR mutation co-presence, distributed in the 5/9 and 5/7 classes. In contrast, females, from both the control and the infertile groups, showed a trend towards a pronounced reduction of such association. The statistical significance of the difference between expected and observed double occurrence of 5T + CFTR traits in women suggests, in line with other reports in the literature, a possible survival-hampering effect. Moreover, regardless of the 5T status, CFTR mutations appear not to be involved in female infertility. These results underline the importance of (i) assessing large sample populations and (ii) considering separately the two genders, whose genotypically opposite correlations with these phenomena may otherwise tend to mask each other.
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76 This test involved nine subjects from the infertile group, revealing the occurrence of the following rare mutations: E217G, T1054A, W356X, D443Y and 3667insTC in males and L997F and R297Q in females and 29 subjects from the control, in which we found: A1009T, D110Y, E826K, G1069R, G1130A, G194V, I556V, L320F, M348K, M82V, P1290T, R117C, R352W, R74W, S42F, S660T, S911R, S912L, T1086A, T582S, V920L and Y89C.
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ABCC7 p.Pro1290Thr 16126774:76:327
status: NEW[hide] A 10-year large-scale cystic fibrosis carrier scre... J Cyst Fibros. 2010 Jan;9(1):29-35. Epub 2009 Nov 7. Picci L, Cameran M, Marangon O, Marzenta D, Ferrari S, Frigo AC, Scarpa M
A 10-year large-scale cystic fibrosis carrier screening in the Italian population.
J Cyst Fibros. 2010 Jan;9(1):29-35. Epub 2009 Nov 7., [PMID:19897426]
Abstract [show]
BACKGROUND: Cystic Fibrosis (CF) is one of the most common autosomal recessive genetic disorders, with the majority of patients born to couples unaware of their carrier status. Carrier screenings might help reducing the incidence of CF. METHODS: We used a semi-automated reverse-dot blot assay identifying the 47 most common CFTR gene mutations followed by DGGE/dHPLC analysis. RESULTS: Results of a 10-year (1996-2006) CF carrier screening on 57,999 individuals with no prior family history of CF are reported. Of these, 25,104 were couples and 7791 singles, with 77.9% from the Italian Veneto region. CFTR mutations were found in 1879 carriers (frequency 1/31), with DeltaF508 being the most common (42.6%). Subjects undergoing medically assisted reproduction (MAR) had significantly (p<0.0001) higher CF carrier frequency (1/22 vs 1/32) compared to non-MAR subjects. CONCLUSIONS: If coupled to counselling programmes, CF carrier screening tests might help reducing the CF incidence.
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131 Aminoacid change Nucleotide change A349V 1178C→T D372E 1251T→G D674V 2153A→T D806G 2549A→G I586V 1888A→G I807V 2551A→G I840T 2651T→C L1335F 4135C→T L1414S 4373T→C L1480P 4571T→C M348T 1175T→C N416S 1379A→G P1290T 4000C→T P355S 1195C→T Q1268R 3935A→G Q1352E 4186C→G S431G 2423A→G S660T 2110T→A S911R 2865T→G T1263A 3919A→G T788I 2495C→T V920L 2890G→T Y1381H 4273T→C Y84H 382T→C two CFTR mutations and who had not been previously diagnosed with CF [29].
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ABCC7 p.Pro1290Thr 19897426:131:290
status: NEW[hide] Folding and rescue of a cystic fibrosis transmembr... J Biol Chem. 2010 Aug 27;285(35):27033-44. Epub 2010 Jun 15. Da Paula AC, Sousa M, Xu Z, Dawson ES, Boyd AC, Sheppard DN, Amaral MD
Folding and rescue of a cystic fibrosis transmembrane conductance regulator trafficking mutant identified using human-murine chimeric proteins.
J Biol Chem. 2010 Aug 27;285(35):27033-44. Epub 2010 Jun 15., 2010-08-27 [PMID:20551307]
Abstract [show]
Impairment of the cystic fibrosis transmembrane conductance regulator (CFTR) Cl(-) channel causes cystic fibrosis, a fatal genetic disease. Here, to gain insight into CFTR structure and function, we exploited interspecies differences between CFTR homologues using human (h)-murine (m) CFTR chimeras containing murine nucleotide-binding domains (NBDs) or regulatory domain on an hCFTR backbone. Among 15 hmCFTR chimeras analyzed, all but two were correctly processed, one containing part of mNBD1 and another containing part of mNBD2. Based on physicochemical distance analysis of divergent residues between human and murine CFTR in the two misprocessed hmCFTR chimeras, we generated point mutations for analysis of respective CFTR processing and functional properties. We identified one amino acid substitution (K584E-CFTR) that disrupts CFTR processing in NBD1. No single mutation was identified in NBD2 that disrupts protein processing. However, a number of NBD2 mutants altered channel function. Analysis of structural models of CFTR identified that although Lys(584) interacts with residue Leu(581) in human CFTR Glu(584) interacts with Phe(581) in mouse CFTR. Introduction of the murine residue (Phe(581)) in cis with K584E in human CFTR rescued the processing and trafficking defects of K584E-CFTR. Our data demonstrate that human-murine CFTR chimeras may be used to validate structural models of full-length CFTR. We also conclude that hmCFTR chimeras are a valuable tool to elucidate interactions between different domains of CFTR.
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124 Thus, we identified six residues in 12b-NBD1 (E527Q, E528Q, S531T, K536Q, I539T, and K584E) and 12 residues in 114c-NBD2 (T1263I, P1290T, K1302Q, Y1307N, Q1309K, S1311K, R1325K, V1338T, C1344Y, L1367I, D1394G, and E1409D) (see supplemental Fig. 1 and supplemental Table 1, A and B).
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ABCC7 p.Pro1290Thr 20551307:124:130
status: NEW147 For most NBD1 and NBD2 mutants, the magnitude of I-efflux was less than that of WT-CFTR; for two mutants in NBD2 (P1290T- and D1394D-CFTR), it was the same; and for one NBD1 mutant (E528Q-CFTR), the magnitude of I-efflux was greater than that of WT-CFTR (Fig. 2C; supplemental Fig. 2, B, D, and F; and Table 1).
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ABCC7 p.Pro1290Thr 20551307:147:114
status: NEW187 TABLE 1 Summary information of CFTR point mutants analyzed in present study CFTR variants Clinical dataa Band C/band Bb (؎S.E., n ؍ 5) Processingc Normalized processingd Normalized iodide efflux functione (؎S.E., n ؍ 6) Iodide efflux to processed proteinf % % % % peak intensity % WT-CFTR -g 83 Ϯ 3 77 100 100 Ϯ 8 - Murine - 86 Ϯ 5 66 86 74 Ϯ 4 86 Ϯ 4 E527Q Mild CF 64 Ϯ 5 49 63 46 Ϯ 4 73 Ϯ 4 E528Q - 86 Ϯ 5 79 102 135 Ϯ 16 132 Ϯ 10 S531T - 87 Ϯ 6 81 105 71 Ϯ 5 67 Ϯ 5 K536Q - 69 Ϯ 3 42 54 51 Ϯ 4 94 Ϯ 3 I539T Revertant 112 Ϯ 5 81 105 49 Ϯ 6 46 Ϯ 5 L581F - 118 Ϯ 3 83 107 72 Ϯ 5 67 Ϯ 3 L581F/K584E - 125 Ϯ 2 77 100 100 Ϯ 12 100 Ϯ 8 T1263I Mild CF 75 Ϯ 3 76 98 31 Ϯ 8 31 Ϯ 5 P1290T Asymptomatic 87 Ϯ 3 82 106 92 Ϯ 10 86 Ϯ 6 K1302Q - 72 Ϯ 3 77 100 37 Ϯ 2 37 Ϯ 2 Y1307N - 82 Ϯ 2 76 98 70 Ϯ 5 71 Ϯ 3 Q1309K - 79 Ϯ 4 77 100 26 Ϯ 2 26 Ϯ 3 S1311K - 73 Ϯ 4 72 93 33 Ϯ 7 35 Ϯ 5 R1325K - 64 Ϯ 6 78 101 47 Ϯ 2 46 Ϯ 4 V1338T - 88 Ϯ 2 77 100 37 Ϯ 11 37 Ϯ 6 C1344Y - 71 Ϯ 4 76 98 86 Ϯ 4 87 Ϯ 4 L1367I - 72 Ϯ 5 80 103 36 Ϯ 5 34 Ϯ 5 D1394G - 78 Ϯ 4 86 111 93 Ϯ 12 83 Ϯ 8 E1409D - 70 Ϯ 3 70 90 43 Ϯ 5 47 Ϯ 4 a Data from the CFTR mutation database.
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ABCC7 p.Pro1290Thr 20551307:187:904
status: NEW285 Among the 20 point mutants described in this study (the above 18 point mutants plus L581F and L581F/K584E), we found four that are listed in the CFTR mutation database (CFTR mutation database), namely E527Q, T1263I, and P1290T, which are described in association with mild CF, and I539T, which is described as an F508del-revertant mutation (Table 1).
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ABCC7 p.Pro1290Thr 20551307:285:220
status: NEW286 Our own data suggest that P1290T (associated with asymptomatic CF) is worthy of further study because it does not affect CFTR processing or function.
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ABCC7 p.Pro1290Thr 20551307:286:26
status: NEW287 This raises the interesting possibility that P1290T might be a sequence variation (polymorphism) like V562I (24).
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ABCC7 p.Pro1290Thr 20551307:287:45
status: NEW