ABCC8 p.Pro1562Ala
| Predicted by SNAP2: | A: N (57%), C: D (66%), D: D (80%), E: D (75%), F: D (75%), G: N (53%), H: D (59%), I: D (71%), K: D (80%), L: D (75%), M: D (66%), N: D (75%), Q: D (71%), R: D (80%), S: D (71%), T: D (63%), V: D (71%), W: D (80%), Y: D (71%), |
| 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] Congenital hyperinsulinism: clinical and molecular... Gene. 2013 May 25;521(1):160-5. doi: 10.1016/j.gene.2013.03.021. Epub 2013 Mar 16. Faletra F, Athanasakis E, Morgan A, Biarnes X, Fornasier F, Parini R, Furlan F, Boiani A, Maiorana A, Dionisi-Vici C, Giordano L, Burlina A, Ventura A, Gasparini P
Congenital hyperinsulinism: clinical and molecular analysis of a large Italian cohort.
Gene. 2013 May 25;521(1):160-5. doi: 10.1016/j.gene.2013.03.021. Epub 2013 Mar 16., [PMID:23506826]
Abstract [show]
Congenital hyperinsulinism (CHI) is a genetic disorder characterized by profound hypoglycemia related to an inappropriate insulin secretion. It is a heterogeneous disease classified into two major subgroups: "channelopathies" due to defects in ATP-sensitive potassium channel, encoded by ABCC8 and KCNJ11 genes, and "metabolopathies" caused by mutation of several genes (GLUD1, GCK, HADH, SLC16A1, HNF4A and HNF1A) and involved in different metabolic pathways. To elucidate the genetic etiology of CHI in the Italian population, we conducted an extensive sequencing analysis of the CHI-related genes in a large cohort of 36 patients: Twenty-nine suffering from classic hyperinsulinism (HI) and seven from hyperinsulinism-hyperammonemia (HI/HA). Seventeen mutations have been found in fifteen HI patients and five mutations in five HI/HA patients. Our data confirm the major role of ATP-sensitive potassium channel in the pathogenesis of Italian cases (~70%) while the remaining percentage should be attributed to other. A better knowledge of molecular basis of CHI would lead to improve strategies for genetic screening and prenatal diagnosis. Moreover, genetic analysis might also help to distinguish the two histopathological forms of CHI, which would lead to a clear improvement in the treatment and in genetic counseling.
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No. Sentence Comment
83 Novel mutations Four novel missense mutations (ABCC8: p.Gly716Ser, p.Pro1562Ala; HNF4A: p.Gly171Arg; GLUD1: Asn463Tyr) have been found.
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ABCC8 p.Pro1562Ala 23506826:83:69
status: NEW119 HI-group mutations identified Patient E/I nt changea aa changea Zygosity/inheritance References (A) Genetic variants found in ABCC8, KCNJ11, HNF4A and GCK genes from HI-group ABCC8 (NM_000352.3) 21 E 10 c.1580_1581dup p.Lys528Glyfs*4 Heterozygosity/paternal Present study 29 E 10 c.1617T>A p.Tyr539* Heterozygosity/ND Present study 24 E 16 c.2146G>A p.Gly716Ser Heterozygosity/ND Present study 13 E 23 c.2780G>A p.Trp927* Heterozygosity/ND Present studyb 20 E 24 c.2857C>T p.Gln953* Heterozygosity/ND Nestorowicz et al. (1998) 20 I 32 c.3989-2A>G Aberrant splicing Heterozygosity/ND Present study 19 E 35 c.4278_4280dup p.Gln1426_Asp1427insGlu Heterozygosity/ND Present study 15,25 E 36 c.4356delinsTA p.Glu1452Aspfs*61 Heterozygosity/paternal Present study 8 E 37 c.4477C>T p.Arg1493Trp Heterozygosity/ND Verkarre et al. (1998) 3 E 37 c.4516G>A p.Glu1506Lys Heterozygosity/maternal Huopio et al. (2000) 28 E 39 c.4684C>G p.Pro1562Ala Heterozygosity/ND Present study KCNJ11 (NM_000525.3) 7 E 1 c.151G>T p.Glu51* Heterozygosity/ND Present study 6 E 1 c.1017G>T p.Val339Val Heterozygosity/paternal Present study HNF4A (NM_000457.3) 27 E 5 c.511G>A p.Gly171Arg Heterozygosity/maternal Present study GCK (NM_000162.3) 6 E 1 c.31G>A p.Ala11Thr Heterozygosity/paternal Chiu et al. (1993) 12 E 6 c.600G>A p.Val200Val Heterozygosity/ND Present study (B) Genetic variants found in GLUD1 gene from HI/HA-group GLUD1 (NM_005271.3) 33 E 7 c.943C>T p.His315Tyr Heterozygosity/de novo Halldorsdottir et al. (2000) 35 E 7 c.955T>C p.Tyr319His Heterozygosity/ND Stanley (2004) 30 E 10 c.1387A>T p.Asn463Tyr Heterozygosity/ND Present study 36 E 11 c.1493C>T p.Ser498Leu Heterozygosity/ND Stanley et al. (1998) 31 E 12 c.1498G>A p.Ala500Thr Heterozygosity/maternal Stanley et al. (2000) E = exon; I = intron.; ND = not determined.
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ABCC8 p.Pro1562Ala 23506826:119:924
status: NEW