ABCC8 p.Gly1316Gln
| Predicted by SNAP2: | A: N (93%), C: N (82%), D: N (87%), E: N (87%), F: N (87%), H: N (82%), I: N (82%), K: N (87%), L: N (82%), M: N (82%), N: N (97%), P: N (82%), Q: N (87%), R: N (82%), S: N (97%), T: N (97%), V: N (87%), W: N (66%), Y: N (87%), |
| Predicted by PROVEAN: | A: N, C: N, D: N, E: N, F: N, H: N, I: N, K: N, L: N, M: N, N: N, P: N, Q: N, R: N, S: N, T: N, V: N, W: N, Y: N, |
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[hide] ABCC8 R1420H Loss-of-Function Variant in a Southwe... Diabetes. 2015 Dec;64(12):4322-32. doi: 10.2337/db15-0459. Epub 2015 Aug 5. Baier LJ, Muller YL, Remedi MS, Traurig M, Piaggi P, Wiessner G, Huang K, Stacy A, Kobes S, Krakoff J, Bennett PH, Nelson RG, Knowler WC, Hanson RL, Nichols CG, Bogardus C
ABCC8 R1420H Loss-of-Function Variant in a Southwest American Indian Community: Association With Increased Birth Weight and Doubled Risk of Type 2 Diabetes.
Diabetes. 2015 Dec;64(12):4322-32. doi: 10.2337/db15-0459. Epub 2015 Aug 5., [PMID:26246406]
Abstract [show]
Missense variants in KCNJ11 and ABCC8, which encode the KIR6.2 and SUR1 subunits of the beta-cell KATP channel, have previously been implicated in type 2 diabetes, neonatal diabetes, and hyperinsulinemic hypoglycemia of infancy (HHI). To determine whether variation in these genes affects risk for type 2 diabetes or increased birth weight as a consequence of fetal hyperinsulinemia in Pima Indians, missense and common noncoding variants were analyzed in individuals living in the Gila River Indian Community. A R1420H variant in SUR1 (ABCC8) was identified in 3.3% of the population (N = 7,710). R1420H carriers had higher mean birth weights and a twofold increased risk for type 2 diabetes with a 7-year earlier onset age despite being leaner than noncarriers. One individual homozygous for R1420H was identified; retrospective review of his medical records was consistent with HHI and a diagnosis of diabetes at age 3.5 years. In vitro studies showed that the R1420H substitution decreases KATP channel activity. Identification of this loss-of-function variant in ABCC8 with a carrier frequency of 3.3% affects clinical care as homozygous inheritance and potential HHI will occur in 1/3,600 births in this American Indian population.
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No. Sentence Comment
70 The other 6 missense variants (all in ABCC8: K1565E, R1420H, G1316Q, M801I, D691E, and S165L) are novel with mAFs of #0.03.
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ABCC8 p.Gly1316Gln 26246406:70:61
status: NEW77 The ABCC8 G1316Q variant may be a private mutation as it was only detected in 10 individuals who were all from a single non-full-heritage Pima Indian pedigree.
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ABCC8 p.Gly1316Gln 26246406:77:10
status: NEW125 &#b6;Heterozygous individuals with birth weight data were N = 2 and 8 for G1316Q and D691E, respectively; therefore, these substitutions were not analyzed for this trait. other ethnic groups.
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ABCC8 p.Gly1316Gln 26246406:125:74
status: NEW