ABCC7 p.Pro750Leu
| ClinVar: |
c.2249C>T
,
p.Pro750Leu
?
, Uncertain significance
|
| CF databases: |
c.2249C>T
,
p.Pro750Leu
(CFTR1)
D
, This missense was found in a fetus with echogenic abnormalities. No other mutation was found.P750L is probably a CF mutation as Proline at this position is conserved in 5 species.
|
| Predicted by SNAP2: | A: D (53%), C: D (53%), D: D (59%), E: D (80%), F: D (75%), G: D (53%), H: D (75%), I: N (53%), K: N (66%), L: D (71%), M: D (63%), N: D (53%), Q: D (71%), R: D (80%), S: N (61%), T: D (66%), V: N (57%), W: D (80%), Y: D (75%), |
| Predicted by PROVEAN: | A: N, C: D, D: N, E: N, F: D, G: D, H: D, I: D, K: D, L: D, M: D, N: D, Q: N, R: D, S: N, T: N, V: D, W: D, Y: D, |
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[hide] Spectrum of CFTR mutations in Mexican cystic fibro... Hum Genet. 2000 Mar;106(3):360-5. Orozco L, Velazquez R, Zielenski J, Tsui LC, Chavez M, Lezana JL, Saldana Y, Hernandez E, Carnevale A
Spectrum of CFTR mutations in Mexican cystic fibrosis patients: identification of five novel mutations (W1098C, 846delT, P750L, 4160insGGGG and 297-1G-->A).
Hum Genet. 2000 Mar;106(3):360-5., [PMID:10798368]
Abstract [show]
We have analyzed 97 CF unrelated Mexican families for mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. Our initial screening for 12 selected CFTR mutations led to mutation detection in 56.66% of the tested chromosomes. In patients with at least one unknown mutation after preliminary screening, an extensive analysis of the CFTR gene by single stranded conformation polymorphism (SSCP) or by multiplex heteroduplex (mHET) analysis was performed. A total of 34 different mutations representing 74.58% of the CF chromosomes were identified, including five novel CFTR mutations: W1098C, P750L, 846delT, 4160insGGGG and 297-1G-->A. The level of detection of the CF mutations in Mexico is still lower than that observed in other populations with a relatively low frequency of the deltaF508 mutation, mainly from southern Europe. The CFTR gene analysis described here clearly demonstrated the high heterogeneity of our CF population, which could be explained by the complex ethnic composition of the Mexican population, in particular by the strong impact of the genetic pool from southern European countries.
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3 A total of 34 different mutations representing 74.58% of the CF chromosomes were identified, including five novel CFTR mutations: W1098C, P750L, 846delT, 4160insGGGG and 297-1G→A.
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ABCC7 p.Pro750Leu 10798368:3:138
status: NEW14 Mexican Indian ancestry is also very different from other Latin American populations such as in Ar- Lorena Orozco · Rafael Velázquez · Julian Zielenski · Lap-Chee Tsui · Margarita Chávez · José Luis Lezana · Yolanda Saldaña · Elizabeth Hernández · Alessandra Carnevale Spectrum of CFTR mutations in Mexican cystic fibrosis patients: identification of five novel mutations (W1098C, 846delT, P750L, 4160insGGGG and 297-1G→A) Hum Genet (2000) 106:360-365 Digital Object Identifier (DOI) 10.1007/s004390000244 Received: 26 October 1999 / Accepted: 11 January 2000 / Published online: 11 February 2000 ORIGINAL INVESTIGATION L. Orozco1 (u) · R. Velázquez · M. Chávez · Y. Saldaña · E. Hernández · A. Carnevale Molecular Biology Laboratory, Department of Research in Human Genetics, National Institute of Pediatrics, Mexico City, Mexico L. Orozco · R. Velázquez · Y. Saldaña Interinstitutional Program of Molecular Biomedicine, CICATA-IPN, Mexico City, Mexico J. Zielenski · L.-C. Tsui Department of Genetics and Genomic Biology, The Hospital for Sick Children, Toronto, Ontario M5G 1X8, Canada J.L. Lezana Asociación Mexicana de Fibrosis Quística, Mexico City, Mexico Contact address: 1 Laboratorio de Biología Molecular, Instituto Nacional de Pediatría, Insurgentes Sur No. 3700-C, Col. Insurgentes-Cuicuilco, Del.
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ABCC7 p.Pro750Leu 10798368:14:455
status: NEW48 Novel mutations At present, we have identified a total of five novel mutations: two missense mutations (W1098C and P750L), two frameshift mutations (846delT and 4160insGGGG) and one splice site mutation (297-1G→A).
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ABCC7 p.Pro750Leu 10798368:48:115
status: NEW53 P750L The P750L mutation was caused by the transition of C to T at nucleotide position 2381 in exon 13b.
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ABCC7 p.Pro750Leu 10798368:53:0
status: NEWX
ABCC7 p.Pro750Leu 10798368:53:10
status: NEW56 Because of the clinical findings, the P750L mutation was classified as severe.
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ABCC7 p.Pro750Leu 10798368:56:38
status: NEW70 a W1098C (antisense), b P750L (antisense), c 846delT (antisense), d 4160insGGGG (antisense), e 297-1GA (antisense) three mutations were found in our population during a preliminary screening by SSCP (S549N, 2055del9→A and 1924del7; Orozco et al. 1997); ∆I507 was found during the screening for ∆F508 (Orozco et al. 1994); and three mutations described at least once in Hispanic populations (R1162X, 2869insG; Casals et al. 1997; 3120+ 1G→A; CFGAC 1994).
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ABCC7 p.Pro750Leu 10798368:70:24
status: NEW[hide] Cystic fibrosis: a worldwide analysis of CFTR muta... Hum Mutat. 2002 Jun;19(6):575-606. Bobadilla JL, Macek M Jr, Fine JP, Farrell PM
Cystic fibrosis: a worldwide analysis of CFTR mutations--correlation with incidence data and application to screening.
Hum Mutat. 2002 Jun;19(6):575-606., [PMID:12007216]
Abstract [show]
Although there have been numerous reports from around the world of mutations in the gene of chromosome 7 known as CFTR (cystic fibrosis transmembrane conductance regulator), little attention has been given to integrating these mutant alleles into a global understanding of the population molecular genetics associated with cystic fibrosis (CF). We determined the distribution of CFTR mutations in as many regions throughout the world as possible in an effort designed to: 1) increase our understanding of ancestry-genotype relationships, 2) compare mutational arrays with disease incidence, and 3) gain insight for decisions regarding screening program enhancement through CFTR multi-mutational analyses. Information on all mutations that have been published since the identification and cloning of the CFTR gene's most common allele, DeltaF508 (or F508del), was reviewed and integrated into a centralized database. The data were then sorted and regional CFTR arrays were determined using mutations that appeared in a given region with a frequency of 0.5% or greater. Final analyses were based on 72,431 CF chromosomes, using data compiled from over 100 original papers, and over 80 regions from around the world, including all nations where CF has been studied using analytical molecular genetics. Initial results confirmed wide mutational heterogeneity throughout the world; however, characterization of the most common mutations across most populations was possible. We also examined CF incidence, DeltaF508 frequency, and regional mutational heterogeneity in a subset of populations. Data for these analyses were filtered for reliability and methodological strength before being incorporated into the final analysis. Statistical assessment of these variables revealed that there is a significant positive correlation between DeltaF508 frequency and the CF incidence levels of regional populations. Regional analyses were also performed to search for trends in the distribution of CFTR mutations across migrant and related populations; this led to clarification of ancestry-genotype patterns that can be used to design CFTR multi-mutation panels for CF screening programs. From comprehensive assessment of these data, we offer recommendations that multiple CFTR alleles should eventually be included to increase the sensitivity of newborn screening programs employing two-tier testing with trypsinogen and DNA analysis.
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113 Mexico ∆F508 (41.6%) G551S (0.5%) 75.5 57.0 35 374/194 Orozco et al.[1993]; Villalobos- G542X (5.6%) 1078delT (0.5%) Torres et al. [1997]; Liang et al. ∆I507 (2.5%) Y1092X (0.5%) [1998]; Orozco et al. [2000] S549N (1.9%) R117H (0.5%) N1303K (1.7%) G85E (0.5%) R75X (1.5%) 1716G→A (0.5%) 406-1G→A (1.5%) W1204X (0.5%) I148T (1.5%) W1098C (0.5%) 3849+10KbC→T (1.5%) 846delT (0.5%) 621+1G→T (1.2%) P750L (0.5%) 2055del9→A (1.0%) V754M (0.5%) 935delA (1.0%) R75Q (0.5%) I506T (1.0) W1096X (0.5%) 3199del6 (1.0%) L558S (0.5%) 2183AA→G (1.0%) 4160insGGGG (0.5%) G551D (0.5%) 297-1G→A (0.5%) R553X (0.5%) H199Y (0.5%) 1924del7 (0.5%) United States ∆F508 (68.6%) R553X (0.9%) 79.7 63.5 10 25048 Cystic Fibrosis Foundation (total) G542X (2.4%) 621+1G→T (0.9%) [1998] G551D (2.1%) 1717-1G→A (0.7%) W1282X (1.4%) 3849+10KbC→T (0.7%) N1303K (1.3%) R117H (0.7%) United States ∆F508 (48.0%) S1255X (1.4%) 77.3 59.8 16 160/148 Carles et al. [1996]; Macek et al. (African 3120+1G→A (12.2%) 444delA (0.7%) [1997]; Dörk et al. [1998]; American) 2307insA (2.0%) R334W (0.7%) Friedman et al. [1998] A559T (2.0%) ∆I507 (0.7%) R553X (2.0%) 1717-1G→A (0.7%) ∆F311 (2.0%) G542X (0.7%) G480C (1.4%) S549N (0.7%) 405+3A→C (1.4%) G551D (0.7%) United States 1) L1093P - - 1 2 Yee et al. [2000] (Cherokee) United States Non-French: French: Non- Non- Non- Non- Bayleran et al. [1996] (Maine) ∆F508 (82.0%) ∆F508 (58%) French: French: French: French: G542X (2.6%) 711+1G→T (8.3%) 95.3 90.8 11 191 G551D (2.6%) I148T (4.2%) French: French: French: French: N1303K (2.1%) A455E (4.2%) 80.3 64.5 8 72 R560T (1.0%) 1717-1G→A (1.4%) Total: 621+1G→T (1.0%) G85E (1.4%) 263 711+1G→T (1.0%) 621+1G→T (1.4%) R117H (1.0%) Y1092X (1.4%) 1717-1G→A (1.0%) G85E (0.5%) W1282X (0.5%) TABLE 1. Continued. Estimated Projected detection of Number of Number of Country/ allele two CFTR mutations chromosomes Region Mutation array detectiona mutationsb includedc (max/min)d Reference WORLDWIDEANALYSISOFCFTRMUTATIONS589 United States ∆F508 (46.0%) R334W (1.6%) 58.5 34.2 7 129 Grebe et al. [1994] (SW Hispanic) G542X (5.4%) W1282X (0.8%) 3849+10KbC→T (2.3%) R553X (0.8%) R1162X (1.6%) United States 1) R1162X - - 3 17 Mercier et al. [1992] (SW Native 2) D648V American) 3) G542X United States 1) R1162X 3) G542X - - 4 16 Mercier et al. [1994] (Zuni Pueblo) 2) 3849+10KbC®T 4) D648V Venezuela ∆F508 (29.6%) G542X (3.7%) 33.3 11.1 2 54 Restrepo et al. [2000] Other Regions Australia ∆F508 (76.9%) 621+1G→T (1.1%) 88.7 78.7 8 761/464 CFGAC [1994] G551D (4.5%) N1303K (0.9%) G542X (2.8%) W1282X (0.6%) R553X (1.3%) R117H (0.6%) East Asia 1) 1898+1G®T 2) 1898+5G®T - - 2 28 Suwanjutha et al. [1998] Hutterite 1) M1101K (69.0%) 2) DF508 (31.0%) - - 2 32 Zielenski et al. [1993] Brethren New Zealand ∆F508 (78.0%) N1303K (1.9%) 87.4 76.4 5 636 CFGAC [1994] G551D (4.4%) 621+1G→T (1.1%) G542X (2.0%) *This table presents the mutation panels for all regions investigated in this study.
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ABCC7 p.Pro750Leu 12007216:113:437
status: NEW[hide] Improved detection of cystic fibrosis mutations in... Hum Reprod. 2004 Mar;19(3):540-6. Epub 2004 Jan 29. Danziger KL, Black LD, Keiles SB, Kammesheidt A, Turek PJ
Improved detection of cystic fibrosis mutations in infertility patients with DNA sequence analysis.
Hum Reprod. 2004 Mar;19(3):540-6. Epub 2004 Jan 29., [PMID:14998948]
Abstract [show]
BACKGROUND: Accurate determination of mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene is critical for genetic counselling and treatment of obstructive azoospermia. Of concern is that detection rates with routine CFTR mutation panels vary widely depending on patient ancestry; and such panels have limited value for azoospermic patients, who are more likely to carry rare mutations. An alternative approach offers comprehensive, CFTR mutation analysis by a DNA sequence method. We investigated whether this method could improve CFTR detection rates in men with obstructive azoospermia in a prospective study of men with obstructive azoospermia and their partners who were referred for genetic counselling and testing at one of two institutions. METHODS: Sixteen patients with congenital absence of the vas deferens (CAVD, n = 14) or idiopathic obstructive azoospermia (n = 2) were studied. DNA from all patients was analysed for mutations by the DNA sequence method. In addition to this method, six men underwent CFTR analysis by a common 25 or 31 mutation panel coupled with poly T analysis. In 10 subjects, common mutation panel findings were inferred from DNA sequence method results. RESULTS: Overall, 12/16 (75%) azoospermic patients had one or more CFTR mutations and/or 5T alleles, including 12 mutations in 10 patients (two compound heterozygotes) and seven 5T alleles in six patients (one homozygote). The sequence method detected all mutations and three variants of unknown significance. By comparison, the common mutation panels detected only 3/12 mutations (25%) and 0/3 variants. CONCLUSION: The DNA sequence method detects more CFTR mutations than common mutation panels. Given the serious, clinical consequences of transmitting such mutations, this study underscores the importance of accurate, CFTR mutation detection in men with obstructive azoospermia and their partners.
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84 Diagnosis/clinical information Ancestry 5T allele Common mutation panel Sequence method Interpretation Mutation panel/ DNA sequence concordance 1 CBAVD N.E. Cauc. Negative Negative Het. P750L Mutation No 2 CBAVD Asian Het. Negative Negative No mutation detected Yes 3 CBAVD Asian Negative Negative Het. V201M Mutation No 4 CBAVD Asian-Indian Het. Negative Het. 1717±4A®G Variant of unknown signi®cance No 5 CBAVD Asian Negative * V520I/3601±3C®A Mutation/variant of unknown signi®cance Nod 6 CBAVDa N.E./S.E.
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ABCC7 p.Pro750Leu 14998948:84:186
status: NEW121 Mutations and variants of unknown signi®cance detected in 16 patients with CAVD Detection method 31 common mutation panel and poly T analysis Sequence method and poly T analysis Mutations 5T 7 7 DF508 2 2 R117H 1 1 P750L ± 1 V201M ± 1 Q1352H ± 1 I556V ± 1 2752±26A®G ± 1 W1098C ± 1 I807M ± 1 V456A ± 1 V520I ± 1 Variants of unknown signi®cance 1717±4A®G ± 1 3601±3C®A ± 1 3499+25C®G ± 1 Total 10 22 the vas deferens is particularly susceptible to the decreased levels of CFTR protein product.
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ABCC7 p.Pro750Leu 14998948:121:220
status: NEW143 Results revealed that he carries the P750L mutation (not included in the common panel).
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ABCC7 p.Pro750Leu 14998948:143:37
status: NEW[hide] Extensive sequencing of the CFTR gene: lessons lea... Hum Genet. 2005 Dec;118(3-4):331-8. Epub 2005 Sep 28. McGinniss MJ, Chen C, Redman JB, Buller A, Quan F, Peng M, Giusti R, Hantash FM, Huang D, Sun W, Strom CM
Extensive sequencing of the CFTR gene: lessons learned from the first 157 patient samples.
Hum Genet. 2005 Dec;118(3-4):331-8. Epub 2005 Sep 28., [PMID:16189704]
Abstract [show]
Cystic fibrosis (CF) is one of the most common monogenic diseases affecting Caucasians and has an incidence of approximately 1:3,300 births. Currently recommended screening panels for mutations in the responsible gene (CF transmembrane regulator gene, CFTR) do not detect all disease-associated mutations. Our laboratory offers extensive sequencing of the CFTR (ABCC7) gene (including the promoter, all exons and splice junction sites, and regions of selected introns) as a clinical test to detect mutations which are not found with conventional screening. The objective of this report is to summarize the findings of extensive CFTR sequencing from our first 157 consecutive patient samples. In most patients with classic CF symptoms (18/24, 75%), extensive CFTR sequencing confirmed the diagnosis by finding two disease-associated mutations. In contrast, only 5 of 75 (7%) patients with atypical CF had been identified with two CFTR mutations. A diagnosis of CF was confirmed in 10 of 17 (58%) newborns with either positive sweat chloride readings or positive immunoreactive trypsinogen (IRT) screen results. We ascertained ten novel sequence variants that are potentially disease-associated: two deletions (c.1641AG>T, c.2949_2853delTACTC), seven missense mutations (p.S158T, p.G451V, p.K481E, p.C491S, p.H949L, p.T1036N, p.F1099L), and one complex allele ([p.356_A357del; p.358I]). We ascertained three other apparently novel complex alleles. Finally, several patients were found to carry partial CFTR gene deletions. In summary, extensive CFTR gene sequencing can detect rare mutations which are not found with other screening and diagnostic tests, and can thus establish a definitive diagnosis in symptomatic patients with previously negative results. This enables carrier detection and prenatal diagnosis in additional family members.
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68 One patient carried an apparently novel complex CFTR allele ([p.R352W; p. P750L]).
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ABCC7 p.Pro750Leu 16189704:68:74
status: NEW[hide] Sweat chloride testing in infants identified as he... J Pediatr. 2008 Dec;153(6):857-9. Soultan ZN, Foster MM, Newman NB, Anbar RD
Sweat chloride testing in infants identified as heterozygote carriers by newborn screening.
J Pediatr. 2008 Dec;153(6):857-9., [PMID:19014821]
Abstract [show]
The reference ranges for sweat [C1(-)] were reevaluated in 300 infants referred to our Center as carriers of at least 1 cystic fibrosis mutation identified through newborn screening. The recommended borderline range of 30 to 59 mmol/L failed to identify all individuals who were compound heterozygotes. Our data support using a borderline range of 24 to 59 mmol/L.
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54 Sweat [Cl- ] and the results of genetic screening of 11 patients with [Cl- ] > 24 mmol/L Patients Sweat [Cl- ] mmol/L Mutations Poly T-TG Repeats 1 89 91 R347P CFTRdel 17a-18 7T/9T 2 85 82 ⌬F508 2622ϩ1 GϾT 9T/9T 3 71 - G542X Y1014del 7T/9T 4 69 65 ⌬F508 c.759AϾG 9T/7T 5 58 49 ⌬F508 L206W 9T/9T 6 44 27 ⌬F508 R352W, P750L - 7 38 41 ⌬F508 - 9T-TG10 5T-TG12 8 24 - ⌬F508 - 9T-TG10 5T-TG12 9 25 27 ⌬F508 - 9T-TG10 5T-TG12 10 24 25 ⌬F508 - 9T-TG12 5T-TG12 11 35 26 ⌬F508 - 9T 9T Soultan et al The Journal of Pediatrics • December 2008 should be followed.
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ABCC7 p.Pro750Leu 19014821:54:362
status: NEW[hide] A new complex allele of the CFTR gene partially ex... Genet Med. 2010 Sep;12(9):548-55. Lucarelli M, Narzi L, Pierandrei S, Bruno SM, Stamato A, d'Avanzo M, Strom R, Quattrucci S
A new complex allele of the CFTR gene partially explains the variable phenotype of the L997F mutation.
Genet Med. 2010 Sep;12(9):548-55., [PMID:20706124]
Abstract [show]
PURPOSE: To evaluate the role of complex alleles, with two or more mutations in cis position, of the cystic fibrosis transmembrane conductance regulator (CFTR) gene in the definition of the genotype-phenotype relationship in cystic fibrosis (CF), and to evaluate the functional significance of the highly controversial L997F CFTR mutation. METHODS: We evaluated the diagnosis of CF or CFTR-related disorders in 12 unrelated subjects with highly variable phenotypes. According to a first CFTR mutational analysis, subjects appeared to be compound heterozygotes for a classic mutation and the L997F mutation. A further CFTR mutational analysis was conducted by means of a protocol of extended sequencing, particularly suited to the detection of complex alleles. RESULTS: We detected a new [R117L; L997F] CFTR complex allele in the four subjects with the highest sweat test values and CF. The eight subjects without the complex allele showed the most varied biochemical and clinical outcome and were diagnosed as having mild CF, CFTR-related disorders, or even no disease. CONCLUSIONS: The new complex allele partially explains the variable phenotype in CF subjects with the L997F mutation. CFTR complex alleles are likely to have a role in the definition of the genotype-phenotype relationship in CF. Whenever apparently identical CFTR-mutated genotypes are found in subjects with divergent phenotypes, an extensive mutational search is mandatory.
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103 In vivo findings and, in some cases, in vitro functional characterizations have been reported for [F508C; S1251N],38 [R347H; D979A],39,40 [R74W; D1270N],41 [G628R; S1235R],42,43 [M470V; S1235R],42 [S912L; G1244V],44 [R117H; (TG)mTn],45-47 [R117C; (TG)mTn],46 [S1235R; (TG)mT5],48 [G576A; R668C],10,49 [V562I; A1006E],49 [R352W; P750L],49 [1198_1203del TGGGCT; 1204GϾA],49 [V754M; CFTRdele3_10,14b_16],50 and [F508del; I1027T].51 These complex alleles have been found in patients with either CF or CFTR-RD, although more often in the former.
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ABCC7 p.Pro750Leu 20706124:103:328
status: NEW[hide] Total pancreatectomy and islet cell autotransplant... Surgery. 2010 Oct;148(4):676-85; discussion 685-6. Sutton JM, Schmulewitz N, Sussman JJ, Smith M, Kurland JE, Brunner JE, Salehi M, Choe KA, Ahmad SA
Total pancreatectomy and islet cell autotransplantation as a means of treating patients with genetically linked pancreatitis.
Surgery. 2010 Oct;148(4):676-85; discussion 685-6., [PMID:20846557]
Abstract [show]
BACKGROUND: For patients with severe chronic pancreatitis, total or completion pancreatectomy with islet cell autotransplantation (IAT) can alleviate pain and avoid the complications of diabetes. Several genetic mutations, specifically, PRSS1, CFTR, and SPINK1, are associated with chronic pancreatitis. Few reports have focused on the benefit of this operation for this subset of patients. METHODS: Between February 2000 and July 2009, 118 patients were treated with total pancreatectomy and IAT for chronic pancreatitis. Patients with known genetic mutations were then selected for further analysis. RESULTS: Of the 188 patients, 16 (13.6%) patients were identified as having genetic mutations, including CFTR (n = 10), PRSS1 (n = 4), and SPINK1 (n = 2) mutations. Mean patient age was 31.4 years (range, 15-59) with an equal male-to-female ratio (50:50). Preoperatively, patients required an average of 185 +/- 60 morphine equivalents (MEQ) (median, 123 MEQ) for preoperative pain control. No patients were taking insulin before operation. After resection with IAT, patients were discharged from the hospital with a daily average of 22 +/- 4 units of insulin with 6 (38%) patients requiring fewer than 15 units of insulin at the time of discharge. At a mean follow-up of 22 months, mean insulin requirements decreased to 15 U/d (P = .0172). A total of 7 (44%) patients required 15 or fewer units daily, and 4 (25%) patients were completely insulin-independent. Average daily narcotic usage at most recent follow-up decreased to 70 MEQ (median, 0) with 10 (63%) patients currently narcotic-independent. Analyses of the 36-item short-form health survey and the McGill Pain Questionnaire demonstrated a significant improvement in quality-of-life parameters and pain assessment. CONCLUSION: In patients who suffer from genetically linked chronic pancreatitis, pancreatic resection with IAT should be considered as an early therapeutic option to decrease chronic abdominal pain while preserving endogenous endocrine function.
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117 Patient demographics Descriptive statistics Data mean (SEM) Range Age, y 32 (3) 15-59 Weight, kg 73 (6) 39-127 Body mass index, kg/m2 24 (2) 15-35 Chronic pancreatitis, y 14 (2) 3-47 Sex Male, n = 8 Female, n = 8 Previous pancreatic operations Puestow, n =3 Whipple, n = 3 Genetic mutations and loci, n (%) CFTR 10 (62.5) R297Q 2 DF508 + R117H 1 R553X + M470V 1 DF508 1 R117H 1 P750L 1 D1152H 1 R31C 1 S1235R 1 PRSS1 4 (25) R122H 3 Unknown* 1 SPINK1 2 (12.5) N34S 2 *One patient was identified as having a PRSS1 mutation, but the specific locus mutation was unknown at the time of publication.
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ABCC7 p.Pro750Leu 20846557:117:378
status: NEW[hide] Mutations in the cystic fibrosis transmembrane con... J Cyst Fibros. 2012 Jul;11(4):316-23. doi: 10.1016/j.jcf.2012.01.005. Epub 2012 Apr 6. Li H, Wen Q, Li H, Zhao L, Zhang X, Wang J, Cheng L, Yang J, Chen S, Ma X, Wang B
Mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) in Chinese patients with congenital bilateral absence of vas deferens.
J Cyst Fibros. 2012 Jul;11(4):316-23. doi: 10.1016/j.jcf.2012.01.005. Epub 2012 Apr 6., [PMID:22483971]
Abstract [show]
BACKGROUND: Genetic testing of the cystic fibrosis transmembrane conductance (CFTR) gene is currently performed in patients with congenital bilateral absence of vas deferens (CBAVD). This study was conducted to investigate the role of mutations in the CFTR gene in CBAVD-dependent male infertility. METHODS: 73 Chinese patients diagnosed with CBAVD were studied. The entire coding regions and splice sites of 27 exons of the CFTR gene were sequenced in 146 chromosomes from the 73 CBAVD patients. Screening was carried out using PCR, gel electrophoresis and DNA sequencing to identify novel variants of the entire coding regions and boundaries of the 27 exons. RESULTS: Five novel nonsynonymous mutations, three novel splice site mutations and one deletion were identified by sequencing. Apart from the novel variants, we also found 19 previously reported mutations and polymorphism sites. Thirty-four patients (46.57%) had the 5T variant (6 homozygous and 28 heterozygous) and in two of them it was not associated with any detectable mutation of the CFTR gene. All potential pathogenic mutations are not contained in the 1000 Genome Project database. In total, the present study identified 30 potential pathogenic variations in the CFTR gene, 9 of which had not previously been described. CONCLUSIONS: Most patients with CBAVD have mutations in the CFTR gene. A mild genotype with one or two mild or variable mutations was observed in all the patients. These findings improve our understanding of the distribution of CFTR alleles in CBAVD patients and will facilitate the development of more sensitive CFTR mutation screening.
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119 △F508 R117H Mutation genotypes IVS8-Tn n (%) Two mutations detected Neg Neg I556V/I556V 7T/7T 1(1.3) Neg Neg I556V/1209+2 G-C 5T/7T 1(1.3) Neg Neg I556V/726delATT 5T/5T 1(1.3) Neg Neg I556V/- 5T/5T 1(1.3) Neg Neg I556V/- 5T/7T 1(1.3) Neg Neg G970D/- 5T/7T 1(1.3) Neg Neg C592F/- 5T/5T 1(1.3) Neg Neg 1209+1 G-C/- 5T/7T 1(1.3) Neg Neg R553X/- 5T/7T 1(1.3) Neg Neg Q1352H/- 5T/7T 1(1.3) Neg Neg S485C/- 5T/7T 1(1.3) Neg Neg A357T/- 5T/7T 1(1.3) Neg Neg E217G/- 5T/7T 1(1.3) Neg Neg R347H/- 5T/7T 1(1.3) Neg Neg G451K/- 5T/7T 1(1.3) Neg Neg L558S/- 5T/7T 1(1.3) Neg Neg 3635delT/Q1352H 7T/7T 1(1.3) Neg Neg A1136T/G970D 7T/7T 1(1.3) Neg Neg 870-1 G-C/- 5T/7T 1(1.3) Neg Neg 520-2 A-G/- 5T/7T 1(1.3) Neg Neg R419I/- 5T/7T 1(1.3) Neg Neg C491F/Q1643Q 7T/7T 1(1.3) Neg Neg Q1352H/- 5T/7T 1(1.3) Neg Neg R851X/- 5T/7T 1(1.3) Neg Neg P750L/G970D 7T/7T 1(1.3) One mutation detected Neg Neg -/- 5T/7T 2(2.7) Neg Neg -/- 5T/7T 3(4.1) Neg Neg -/- 5T/7T 5(6.8) Neg Neg -/- 5T/5T 2(2.7) Neg Neg -/- 5T/5T 1(1.3) Neg Neg G970D/- 7T/7T 2(2.7) Neg Neg D993Y/- 7T/7T 1(1.3) Neg Neg I556V/- 7T/7T 1(1.3) Neg Neg T388R/- 7T/7T 1(1.3) No mutation detected Neg Neg -/- 7T/7T 8(10.9) Neg Neg -/- 7T/7T 15(20.5) Neg Neg -/- 7T/9T 2(2.7) Neg Neg -/- 7T/7T 4(5.5) Neg: Negative.
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ABCC7 p.Pro750Leu 22483971:119:833
status: NEW118 b3;F508 R117H Mutation genotypes IVS8-Tn n (%) Two mutations detected Neg Neg I556V/I556V 7T/7T 1(1.3) Neg Neg I556V/1209+2 G-C 5T/7T 1(1.3) Neg Neg I556V/726delATT 5T/5T 1(1.3) Neg Neg I556V/- 5T/5T 1(1.3) Neg Neg I556V/- 5T/7T 1(1.3) Neg Neg G970D/- 5T/7T 1(1.3) Neg Neg C592F/- 5T/5T 1(1.3) Neg Neg 1209+1 G-C/- 5T/7T 1(1.3) Neg Neg R553X/- 5T/7T 1(1.3) Neg Neg Q1352H/- 5T/7T 1(1.3) Neg Neg S485C/- 5T/7T 1(1.3) Neg Neg A357T/- 5T/7T 1(1.3) Neg Neg E217G/- 5T/7T 1(1.3) Neg Neg R347H/- 5T/7T 1(1.3) Neg Neg G451K/- 5T/7T 1(1.3) Neg Neg L558S/- 5T/7T 1(1.3) Neg Neg 3635delT/Q1352H 7T/7T 1(1.3) Neg Neg A1136T/G970D 7T/7T 1(1.3) Neg Neg 870-1 G-C/- 5T/7T 1(1.3) Neg Neg 520-2 A-G/- 5T/7T 1(1.3) Neg Neg R419I/- 5T/7T 1(1.3) Neg Neg C491F/Q1643Q 7T/7T 1(1.3) Neg Neg Q1352H/- 5T/7T 1(1.3) Neg Neg R851X/- 5T/7T 1(1.3) Neg Neg P750L/G970D 7T/7T 1(1.3) One mutation detected Neg Neg -/- 5T/7T 2(2.7) Neg Neg -/- 5T/7T 3(4.1) Neg Neg -/- 5T/7T 5(6.8) Neg Neg -/- 5T/5T 2(2.7) Neg Neg -/- 5T/5T 1(1.3) Neg Neg G970D/- 7T/7T 2(2.7) Neg Neg D993Y/- 7T/7T 1(1.3) Neg Neg I556V/- 7T/7T 1(1.3) Neg Neg T388R/- 7T/7T 1(1.3) No mutation detected Neg Neg -/- 7T/7T 8(10.9) Neg Neg -/- 7T/7T 15(20.5) Neg Neg -/- 7T/9T 2(2.7) Neg Neg -/- 7T/7T 4(5.5) Neg: Negative.
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ABCC7 p.Pro750Leu 22483971:118:832
status: NEW[hide] CFTR gene analysis in Latin American CF patients: ... J Cyst Fibros. 2007 May;6(3):194-208. Epub 2006 Sep 11. Perez MM, Luna MC, Pivetta OH, Keyeux G
CFTR gene analysis in Latin American CF patients: heterogeneous origin and distribution of mutations across the continent.
J Cyst Fibros. 2007 May;6(3):194-208. Epub 2006 Sep 11., [PMID:16963320]
Abstract [show]
BACKGROUND: Cystic Fibrosis (CF) is the most prevalent Mendelian disorder in European populations. Despite the fact that many Latin American countries have a predominant population of European-descent, CF has remained an unknown entity until recently. Argentina and Brazil have detected the first patients around three decades ago, but in most countries this disease has remained poorly documented. Recently, other countries started publishing their results. METHODS: We present a compilation and statistical analysis of the data obtained in 10 countries (Argentina, Brazil, Chile, Colombia, Costa Rica, Cuba, Ecuador, Mexico, Uruguay and Venezuela), with a total of 4354 unrelated CF chromosomes studied. RESULTS: The results show a wide distribution of 89 different mutations, with a maximum coverage of 62.8% of CF chromosomes/alleles in the patient's sample. Most of these mutations are frequent in Spain, Italy, and Portugal, consistent with the origin of the European settlers. A few African mutations are also present in those countries which were part of the slave trade. New mutations were also found, possibly originating in America. CONCLUSION: The profile of mutations in the CFTR gene, which reflects the heterogeneity of its inhabitants, shows the complexity of the molecular diagnosis of CF mutations in most of the Latin American countries.
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No. Sentence Comment
42 Some have concentrated in the search of specific mutations that are Table 1 Mutations found in the Latin American CF patients Exon 1 p.L6VÌe; Exon 3 p.W57X, p.R75X, p.G85E Exon 4 p.R117H Exon 6a p.H199Y, p.V201M, p.L206W, p.Q220X, p.V232D, c.846delTÌe; Exon 6b p.Y275XÌe;, c.935delA Exon 7 p.R334W, p.R347P, p.Y362XÌe;, c.1078delT, c.1215delG Exon 8 c.1323_1324insAÌe; Exon 9 c.1460_1461delATÌe;, c.1353_1354insTÌe;,# Exon 10 p.I506T, p.I507del, p.F508del Exon 11 p.G542X, p.S549N, p.S549R, p.G551D, p.G551S, p.R553X, p.L558S, p.A559T, c.1782delA Exon 12 p.S589I Exon 13 p.H609RÌe;, p.P750L, p.V754M, c.1924_1930del, c.2055_2063del, c.2183AA NG;c.2184delA, c.2184delA, c.2185_2186insC, c.2347delG, c.2566_2567insTÌe;, c.2594_2595delGTÌe; Exon 14a p.R851L, c.2686_2687insTÌe; Exon 15 c.2869_2870insG Exon 16 c.3120+1GNA Exon 17a p.I1027T, c.3171delC, c.3199_3204del Exon 17b p.G1061R, p.R1066C, p.W1069X#, p.W1089X, p.Y1092X, p.W1098CÌe; Exon 19 p.R1162X, p.W1204X, p.Q1238X, c.3617_3618delGAÌe;#, c.3659delC Exon 20 p.W1282X, p.R1283M Exon 21 p.N1303K, c.4016_4017insT Exon 22 c.4160_4161insGGGGÌe; 5' flanking c.-834GNT Intron 2 c.297-1GNAÌe;, c.297-2ANG Intron 3 c.406-1GNA Intron 4 c.621+1GNT Intron 5 c.711+1GNT Intron 8 c.IVS8-5T Intron 10 c.1716GNA, c.1717-1GNA Intron 11 c.1811+1.6KbANG, c.1812-1GNA Intron 12 c.1898+1GNA, c.1898+3ANG Intron 14 c.2789+2_2789+3insA, c.2789+5GNA Intron 17a c.3272-26ANG Intron 17b c.3500-2ANGÌe; Intron 19 c.3849+1GNA, c.3849+10KbCNT Intron 20 c.4005+1GNA, c.4005-1GNA# Mutations are listed according to their position in the gene.
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ABCC7 p.Pro750Leu 16963320:42:617
status: NEW51 Table 2 p.I507del p.S549N p.S549R p.G551D p.G551S p.R553X p.L558S p.A559T p.S589I p.H609RÌe; p.P750L p.V754M p.R851L p.I1027T p.G1061R p.R1066C p.W1069X# p.W1089X p.Y1092X p.W1098CÌe; p.W1204X 3 0 1 0 1 1 1 1 1 0 4 1 2 3 1 3 0.24 1 0.08 1 0.08 6 0.48 2 0.16 1 0.08 1 0.08 4 0.32 1 0.08 1 4 1 2 1 1 0 0 0 1 0 0 0 1 1 0 1 0 2 0 1 3 0 0 0 0 0 0 1 0.05 1 0.05 1 0.05 10 0.54 1 0.05 2 0.11 3 0.16 3 0 0 0 1 0 1 1 2 0.79 4 1.58 4 1 1 1 1 4 1.83 1 0.46 1 0.46 1 0.46 1 0.46 0 0 0 0 0 0 0 5 5 1 1 1 1 1 1 1 1 1 1 1 5 1.82 6 2.19 1 0.36 1 0.36 1 0.36 1 0.36 1 0.36 1 0.36 1 0.36 1 0.36 1 0.36 1 0.36 1 1.31 1 1.31 1 1.31 10 6 6 6 1 22 1 1 2 1 1 1 1 1 1 6 1 3 5 1 1 0.23 0.14 0.14 0.14 0.02 0.51 0.02 0.02 0.05 0.02 0.02 0.02 0.02 0.02 0.02 0.14 0.02 0.07 0.11 0.02 0.02 (continued on next page) Table 2 Mutation frequencies in Latin American CF patients Country p.Q1238X p.R1283M c.-834GNT c.297-1GNA* c.297-2ANG c.406-1GNA c.621+1GNT c.711+1GNT c.846delT* c.935delA c.1078delT c.1215delG c.1323_1324insA* c.1353_1354insT*# c.1460_1461delAT* Argentina 1 3 1 1 1 1 1 Subtotal and frequency (%) 1 0.08 1 0.08 4 0.32 1 0.08 1 0.08 1 0.08 Brazil 1 1 1 1 0 0 Subtotal and frequency (%) 1 0.05 2 0.11 1 0.05 Chile 0 0 Subtotal and frequency (%) Colombia 1 1 Subtotal and frequency (%) 1 0.46 1 0.46 Costa Rica Frequency (%) 0 Cuba Frequency (%) Ecuador Subtotal and frequency (%) Mexico 1 3 1 2 1 1 Subtotal and frequency (%) 1 0.36 3 1.09 1 0.36 1 0.36 2 0.73 1 0.36 Uruguay Frequency (%) 1 1.31 Venezuela Subtotal and frequency (%) Total 1 1 1 1 1 3 7 2 1 2 1 1 1 1 1 Frequency (%) 0.02 0.02 0.02 0.02 0.02 0.07 0.16 0.05 0.02 0.05 0.02 0.02 0.02 0.02 0.02 (continued ) Table 2 c.1716GNA c.1717-1GNA c.1782delA c.1811+1,6KbANG c.1812-1GNA c.1898+1GNA c.1898+3ANG c.1924_1930del c.2055_2063del c.2183AANG;c.2184delA c.2184delA c.2185_2186insC 5 1 4 1 1 1 0 1 2 2 6 0.48 1 0.08 6 0.48 2 0.16 1 0.08 1 0.08 1 0.08 1 0 6 5 1 3 0 0 0 0 7 0.37 5 0.27 1 0.05 3 0.16 0 0 12 1 12 5.50 1 0.46 0 0 1 1 2 2 1 0.36 1 0.36 2 0.73 2 0.73 1 1.31 1 14 1 18 5 3 1 1 2 6 1 1 0.02 0.32 0.02 0.41 0.11 0.07 0.02 0.02 0.05 0.14 0.02 0.02 (continued on next page) Table 2 Mutation frequencies in Latin American CF patients Country c.2347delG c.2566_2567insT* c.2594_2595delGT* c.2686_2687insT* c.2789+2_2789+3insA c.2789+5GNA c.2869_2870insG c.3120+1GNA c.3171delC c.3199_3204del c.3272-26ANG c.3500-2ANG* Argentina 2 1 2 2 3 3 1 1 2 Subtotal and frequency (%) 2 0.16 1 0.08 2 0.16 2 0.16 6 0.48 1 0.08 1 0.08 2 0.16 Brazil 2 1 1 1 6 0 0 4 0 Subtotal and frequency (%) 2 0.11 1 0.05 1 0.05 10 0.54 1 0.05 Chile Subtotal and frequency (%) Colombia 1 1 1 Subtotal and frequency (%) 1 0.46 1 0.46 1 0.46 Costa Rica Frequency (%) Cuba Frequency (%) Ecuador Subtotal and frequency (%) Mexico 2 Subtotal and frequency (%) 2 0.73 Uruguay Frequency (%) 1 1.31 Venezuela Subtotal and frequency (%) Total 2 2 1 3 2 9 1 12 1 2 2 1 Frequency (%) 0.05 0.05 0.02 0.07 0.05 0.21 0.02 0.28 0.02 0.05 0.05 0.02 (continued ) Table 2 c.3617_3618delGA*,# c.3659delC c.3849+1GNA c.3849+10kbCNT c.4005+1GNA c.4005-1GNA# c.4016_4017insT c.4160_4161insGGGG* c.IVS8-5T Unknown Authors 37 Aulehla-Scholz [17] 2 4 1 2 4 76 Visich [12] 1 78 Iba&#f1;ez [18] 54 Varela 2004 8 Prieto [19] 2 1 1 1 18 Oller-Ramirez 2004 4 0.32 6 0.48 1 0.08 1 0.08 2 0.16 5 0.40 271 21.75 205 Raskin [20] 32 Chiba [21] 1 89 Bernardino [22] 60 Marostica [23] 69 Parizotto [24] 99 Cabello [25,26] 33 Martins [27] 70 Streit [28] 0 5 120 Raskin [15] 0 0 12 Goloni-Bertollo [29] 1 0.05 5 0.27 789 42.46 48 Rios [30] 22 Molina [31] 1 11 Navarro [32] 0 3 34 Repetto [33] 4 1.58 115 45.63 1 67 Keyeux [14] 17 Restrepo [34] 1 0.46 84 38.53 0 25 52.08 Venegas [35] 95 65.97 Collazo [36] 20 Merino [37] 30 Cassiman 2004 15 Paz-y-Mino [38] 65 63.72 1 1 53 Orozco [13] 2 35 Villalobos [39] 3 1.09 1 0.36 88 32.11 11 14.47 Luzardo [40,41] 36 Restrepo [34] 41 Alvarado [42] 77 56.62 1 4 1 18 1 1 2 1 5 1620 0.02 0.09 0.02 0.41 0.02 0.02 0.05 0.02 0.11 37.21 Mutation frequencies in Latin American CF patients most frequently found in Caucasians, by allele specific polymerase chain reaction (AS-PCR), enzymatic digestion, allele specific oligonucleotide hybridization (ASO), or using mainly commercial kits, whereas other studies used a systematic approach to analyse the promoter, coding and exon/ intron boundaries of the CFTR region in the search for any possible mutation.
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ABCC7 p.Pro750Leu 16963320:51:99
status: NEW98 As an example, in the case of Argentina and Uruguay, the p.F508del mutation shows the highest frequencies (59% and Table 5 Mutations with frequencies less than 0.1% Panel A Mutation Number of chromosomes % Country p.R75X 3 0.07 Mexico c.W1089X 3 0.07 Argentina, Brazil c.406-1GNA 3 0.07 Mexico c.1898+1GNA 3 0.07 Argentina, Brazil c.2686_2687insTÌe; 3 0.07 Argentina, Brazil p.L206W 2 0.05 Brazil p.I506T 2 0.05 Mexico p.S589I 2 0.05 Argentina c.711+1GNT 2 0.05 Argentina c.935delA 2 0.05 Mexico c.2055_2063del 2 0.05 Mexico c.2347delG 2 0.05 Brazil c.2566_2567insTÌe; 2 0.05 Argentina c.2789+2_2789+3insA 2 0.05 Argentina c.3199_3204del 2 0.05 Mexico c.3272-26ANG 2 0.05 Argentina c.4016_4017insT 2 0.05 Argentina Panel B Mutation N % each Country p.L6VÌe;, p.W57X, p.Q220X, p.Y362XÌe;, p.I1027T, p.G1061R, p.R1283M, c.297-2ANG, c.1353_1354insTÌe;, c.1460_1461delATÌe;, c.1782delA, c.1898+3ANG, c.2184delA, c.2594_2595delGTÌe;, c.2869_2870insG, c.4005Ìe;1GNA, c.4005-1GNA# 17 0.02 Argentina p.R117H, p.H199Y, p.G551S, p.L558S, p.P750L, p.V754M, p.W1069X#, p.W1098CÌe;, p.W1204X, c.297-1GNAÌe;, c.846delTÌe;, c.1078delT, c.1716GNA, c.1924_1930del, c.4160_4161insGGGGÌe; 15 0.02 Mexico p.V201M, p.V232D, p.Y275XÌe;, p.R347P, p.R851L, p.Q1238X, c.3171delC, c.3617_3618delGAÌe;# 8 0.02 Brazil p.A559T, p.H609RÌe;, c.1215delG, c.1323_1324insAÌe;, c.2185_2186insC, c.3500-2ANGÌe;, c.3849+1GNA, 7 0.02 Colombia c.-834GNT 1 0.02 Uruguay The upper part (Panel A) shows the mutations found in more than one patient, whereas the lower part (Panel B) of the table shows all the mutations that are present only once in each country.
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ABCC7 p.Pro750Leu 16963320:98:1062
status: NEW