ABCMdb

ABCC8 p.Ala478Val

Predicted by SNAP2:	C: D (66%), D: D (91%), E: D (91%), F: D (85%), G: D (71%), H: D (91%), I: D (80%), K: D (91%), L: D (85%), M: D (71%), N: D (85%), P: D (91%), Q: D (85%), R: D (85%), S: D (63%), T: D (66%), V: D (80%), W: D (91%), Y: D (85%),
Predicted by PROVEAN:	C: D, D: D, E: D, F: D, G: N, H: D, I: D, K: D, L: D, M: D, N: D, P: D, Q: D, R: D, S: N, T: D, V: D, W: D, Y: D,

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Publications
[hide] Cantu syndrome is caused by mutations in ABCC9. Am J Hum Genet. 2012 Jun 8;90(6):1094-101. doi: 10.1016/j.ajhg.2012.04.014. Epub 2012 May 17. van Bon BW, Gilissen C, Grange DK, Hennekam RC, Kayserili H, Engels H, Reutter H, Ostergaard JR, Morava E, Tsiakas K, Isidor B, Le Merrer M, Eser M, Wieskamp N, de Vries P, Steehouwer M, Veltman JA, Robertson SP, Brunner HG, de Vries BB, Hoischen A
Cantu syndrome is caused by mutations in ABCC9.
Am J Hum Genet. 2012 Jun 8;90(6):1094-101. doi: 10.1016/j.ajhg.2012.04.014. Epub 2012 May 17., [PMID:22608503]

Abstract [show]
Cantu syndrome is a rare disorder characterized by congenital hypertrichosis, neonatal macrosomia, a distinct osteochondrodysplasia, and cardiomegaly. Using an exome-sequencing approach applied to one proband-parent trio and three unrelated single cases, we identified heterozygous mutations in ABCC9 in all probands. With the inclusion of the remaining cohort of ten individuals with Cantu syndrome, a total of eleven mutations in ABCC9 were found. The de novo occurrence in all six simplex cases in our cohort substantiates the presence of a dominant disease mechanism. All mutations were missense, and several mutations affect Arg1154. This mutation hot spot lies within the second type 1 transmembrane region of this ATP-binding cassette transporter protein, which may suggest an activating mutation. ABCC9 encodes the sulfonylurea receptor (SUR) that forms ATP-sensitive potassium channels (K(ATP) channels) originally shown in cardiac, skeletal, and smooth muscle. Previously, loss-of-function mutations in this gene have been associated with idiopathic dilated cardiomyopathy type 10 (CMD10). These findings identify the genetic basis of Cantu syndrome and suggest that this is a new member of the potassium channelopathies.

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Sentences [show]
No. Sentence Comment
19 Phenotype of Individuals with Cantu &#b4; Syndrome Clinical Features Affected Individuals 1 2a 2b 2c 3 4 5 6 7 8a 8b 9a 9b 10 Gender M F F F M F M F M F M M F M Mutation (cDNA) 3460C>T 3461G>A 3461G>A 3461G>A 3461G>A 3460C>T 3460C>T 3128G>A 3461G>T 1433C>T 1433C>T - - - Alteration (protein) Arg1154Trp Arg1154Gln Arg1154Gln Arg1154Gln Arg1154Gln Arg1154Trp Arg1154Trp Cys1043Tyr Arg1154Gln Ala478Val Ala478Val - - - Inherited de novo inherited inherited de novo de novo de novo de novo de novo inherited Consanguinity &#fe; - - - - - &#fe; - - - &#fe; &#fe; &#fe; - Age at evaluation 4 m 16 yrs 10 yrs 39 yrs 8 yrs 21 yrs 3.5 m 4.5 yrs 9.8 yrs 4 m 32 yrs 6 yrs 4 yrs 3 m Alive - &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; - &#fe; Congenital hypertrichosis &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; Macrosomia at birth &#fe; - &#fe; &#fe; - &#fe; - &#fe; - &#fe; &#fe; - - &#fe; Macrocephaly &#fe; &#fe; &#fe; &#fe; &#fe; - &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; ID* and/or developmental delay - - - - &#fe; - &#fe; - - &#fe; - &#fe; &#fe; &#fe; Facial Features Coarse face &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; Epicanthal folds &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; - Abundant and/or curly eyelashes &#fe; &#fe; &#fe; - &#fe; - &#fe; &#fe; &#fe; &#fe; - &#fe; &#fe; &#fe; Broad and/or flat nasal bridge &#fe; &#fe; &#fe; &#fe; &#fe; - &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; Small nose and/or anteverted nostrils &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; - - - &#fe; Prominent mouth and/or thick lips &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; Long philtrum &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; &#fe; High and/or narrow palate &#fe; &#fe; &#fe; &#fe; - &#fe; &#fe; - - - &#fe; &#fe; &#fe; - Macroglossy &#fe; &#fe; &#fe; &#fe; - &#fe; &#fe; - - - &#fe; - - - Anterior open bite - &#fe; &#fe; - - &#fe; - - - - - - - Gingival hyperplasia &#fe; &#fe; &#fe; &#fe; - &#fe; &#fe; - - &#fe; - - - - Short neck - - - &#fe; &#fe; - &#fe; &#fe; &#fe; - - &#fe; &#fe; &#fe; (Continued on next page) Table 1. Login to comment