ABCA1 p.Arg1680Gln
| ClinVar: |
c.5038C>T
,
p.Arg1680Trp
D
, Pathogenic
|
| Predicted by SNAP2: | A: D (85%), C: D (85%), D: D (95%), E: D (91%), F: D (91%), G: D (91%), H: D (71%), I: D (91%), K: D (63%), L: D (85%), M: D (85%), N: D (91%), P: D (91%), Q: D (85%), S: D (85%), T: D (85%), V: D (91%), W: D (95%), Y: D (85%), |
| Predicted by PROVEAN: | A: D, C: D, D: D, E: D, F: D, G: D, H: D, I: D, K: N, L: D, M: D, N: D, P: D, Q: D, S: D, T: D, V: D, W: D, Y: D, |
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[hide] Mutations in APOA-I and ABCA1 in Norwegians with l... Clin Chim Acta. 2010 Dec 14;411(23-24):2019-23. Epub 2010 Aug 25. Berge KE, Leren TP
Mutations in APOA-I and ABCA1 in Norwegians with low levels of HDL cholesterol.
Clin Chim Acta. 2010 Dec 14;411(23-24):2019-23. Epub 2010 Aug 25., [PMID:20800056]
Abstract [show]
BACKGROUND: Epidemiological studies have shown that low levels of plasma high density lipoprotein (HDL) cholesterol are associated with increased risk of ischemic heart disease (IHD), but it appears that genetic forms of low HDL cholesterol levels, as opposed to lifestyle-induced low levels of HDL cholesterol, do not result in increased risk of IHD. Therefore, the etiology of reduced levels of plasma HDL cholesterol may represent a factor that should be considered in risk stratification with respect to primary prevention. Genes encoding proteins involved in HDL metabolism, such as the ATP-binding cassette transporter A1 (ABCA1) and apolipoprotein (apo) A-I genes, are candidate genes for harboring mutations that lead to low HDL cholesterol levels. METHODS: The ABCA1 and apoA-I genes in 56 Norwegian patients, with a mean HDL cholesterol level of 0.53 (+/-0.15) mmol/l, were subjected to DNA sequencing. RESULTS: Several mutations were identified in the ABCA1 gene, and two mutations were identified in the apoA-I gene. A total of 18 patients (32%) were carriers of mutations considered to be pathogenic. Their mean HDL cholesterol level was 0.45 (+/-0.15) mmol/l compared to 0.57 (+/-0.14) mmol/l in noncarriers (p<0.005). CONCLUSION: Mutations in the genes encoding ABCA1 and apoA-I are common in Norwegians, with a markedly decreased HDL cholesterol level.
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No. Sentence Comment
59 of patients (het/hom)a Mutation Nucleotide Exon/Intron (i) PolyPhen prediction (score) SNP rs ID, ref.# ABCA1 Missense 8/3 R219K c.656, GNA 7 Benign (0.489) rs2230806 0/1 R282Q c.845, GNA 9 Benign (0.592) Novel 1/0 V399A c.1196, TNC 11 Benign (0.040) rs9282543 1/0 M636V c.1906, ANG 15 Benign (0.418) Novel 3/0 V771M c.2311, GNA 16 Benign (0.931) rs2066718 2/0 V825I c.2473, GNA 17 Benign (0.440) rs2066715 3/1 I883M c.2649, ANG 18 Benign (0.147) rs2066714 1/0 C887F c.2660, GNT 19 Benign (0.888) Novel 3/0 E1172D c.3516, GNC 24 Benign (0.546) rs33918808 1/0 G1216V c.3647, GNT 25 Prob damb (2.154) Ref. [18] 1/0 L1244Q c.3731, TNA 25 Prob dam (2.269) Novel 1/0 C1477F c.4430, TNA 31 Prob dam (3.688) Ref. [17] 14/1 R1587K c.4760, ANT 35 Benign (0.284) rs2230808 1/0 V1674I c.5020, GNA 37 Benign (0.821) Novel 1/0 R1680Q c.5039, GNA 37 Poss damc (1.926) Ref. [17] 1/0 N1800H c.5398, ANC 40 Poss dam (1.845) Ref. [19] Nonsense/splice 1/0 IVS4+1, GNA c.302+1, GNA i4 - 1/0 C1429X c.4287, CNA 31 - 1/0 IVS32+1, GNA c.4559+1, GNA i32 - APOA-I 7/0 R160L c.551, GNT 4 Prob dam (2.491) Ref. [21] 1/0 del182K del c.616-618 AAG 4 - Novel a Het: heterozygote, hom: homozygote.
X
ABCA1 p.Arg1680Gln 20800056:59:814
status: NEW75 One patient was heterozygous for mutation R1680Q, which has previously been found in a patient with a high level of HDL cholesterol [17].
X
ABCA1 p.Arg1680Gln 20800056:75:42
status: NEW76 Thus, at face value, it is likely that this mutation is a normal genetic variant, although none of the 100 control individuals were heterozygous for mutation R1680Q.
X
ABCA1 p.Arg1680Gln 20800056:76:158
status: NEW