ABCC7 p.His609*
| ClinVar: |
c.1826A>T
,
p.His609Leu
?
, not provided
c.1826A>G , p.His609Arg ? , not provided |
| CF databases: |
c.1826A>G
,
p.His609Arg
(CFTR1)
?
, This mutation was detected by DGGE and identified by direct sequencing. H609R is not found in 100 other non-[delta]F508 CF chromosomes and 100 non CF chromosomes tested. The mutation creates an MaeII site. It was found in a CF patient originating from Columbia.
c.1826A>T , p.His609Leu (CFTR1) ? , This mutation was identified on one Italian CF chromosome |
[switch to compact view]
Comments [show]
None has been submitted yet.
[hide] Variation in a repeat sequence determines whether ... Am J Hum Genet. 2004 Jan;74(1):176-9. Epub 2003 Dec 18. Groman JD, Hefferon TW, Casals T, Bassas L, Estivill X, Des Georges M, Guittard C, Koudova M, Fallin MD, Nemeth K, Fekete G, Kadasi L, Friedman K, Schwarz M, Bombieri C, Pignatti PF, Kanavakis E, Tzetis M, Schwartz M, Novelli G, D'Apice MR, Sobczynska-Tomaszewska A, Bal J, Stuhrmann M, Macek M Jr, Claustres M, Cutting GR
Variation in a repeat sequence determines whether a common variant of the cystic fibrosis transmembrane conductance regulator gene is pathogenic or benign.
Am J Hum Genet. 2004 Jan;74(1):176-9. Epub 2003 Dec 18., [PMID:14685937]
Abstract [show]
An abbreviated tract of five thymidines (5T) in intron 8 of the cystic fibrosis transmembrane conductance regulator (CFTR) gene is found in approximately 10% of individuals in the general population. When found in trans with a severe CFTR mutation, 5T can result in male infertility, nonclassic cystic fibrosis, or a normal phenotype. To test whether the number of TG repeats adjacent to 5T influences disease penetrance, we determined TG repeat number in 98 patients with male infertility due to congenital absence of the vas deferens, 9 patients with nonclassic CF, and 27 unaffected individuals (fertile men). Each of the individuals in this study had a severe CFTR mutation on one CFTR gene and 5T on the other. Of the unaffected individuals, 78% (21 of 27) had 5T adjacent to 11 TG repeats, compared with 9% (10 of 107) of affected individuals. Conversely, 91% (97 of 107) of affected individuals had 12 or 13 TG repeats, versus only 22% (6 of 27) of unaffected individuals (P<.00001). Those individuals with 5T adjacent to either 12 or 13 TG repeats were substantially more likely to exhibit an abnormal phenotype than those with 5T adjacent to 11 TG repeats (odds ratio 34.0, 95% CI 11.1-103.7, P<.00001). Thus, determination of TG repeat number will allow for more accurate prediction of benign versus pathogenic 5T alleles.
Comments [show]
None has been submitted yet.
No. Sentence Comment
38 5T was confirmed by use of pedigree analysis to be in trans with R764X, Y563X, and H609X and was inferred as in trans for the remaining mutations, since these mutations have never been found to be in linkage disequilibrium with 5T in previous population sampling.
X
ABCC7 p.His609* 14685937:38:83
status: NEW