ABCMdb

ABCD1 p.Ile481Phe

Predicted by SNAP2:	A: D (80%), C: D (71%), D: D (91%), E: D (91%), F: D (80%), G: D (91%), H: D (91%), K: D (95%), L: D (66%), M: D (80%), N: D (91%), P: D (95%), Q: D (91%), R: D (91%), S: D (85%), T: D (91%), V: N (66%), W: D (91%), Y: D (85%),
Predicted by PROVEAN:	A: D, C: D, D: D, E: D, F: D, G: D, H: D, K: D, L: N, M: D, N: D, P: D, Q: D, R: D, S: D, T: D, V: N, W: D, Y: D,

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Publications
[hide] Mutations, clinical findings and survival estimate... PLoS One. 2012;7(3):e34195. doi: 10.1371/journal.pone.0034195. Epub 2012 Mar 29. Pereira Fdos S, Matte U, Habekost CT, de Castilhos RM, El Husny AS, Lourenco CM, Vianna-Morgante AM, Giuliani L, Galera MF, Honjo R, Kim CA, Politei J, Vargas CR, Jardim LB
Mutations, clinical findings and survival estimates in South American patients with X-linked adrenoleukodystrophy.
PLoS One. 2012;7(3):e34195. doi: 10.1371/journal.pone.0034195. Epub 2012 Mar 29., [PMID:22479560]

Abstract [show]
In this study, we analyzed the ABCD1 gene in X-linked adrenoleukodystrophy (X-ALD) patients and relatives from 38 unrelated families from South America, as well as phenotypic proportions, survival estimates, and the potential effect of geographical origin in clinical characteristics. METHODS: X- ALD patients from Brazil, Argentina and Uruguay were invited to participate in molecular studies to determine their genetic status, characterize the mutations and improve the genetic counseling of their families. All samples were screened by SSCP analysis of PCR fragments, followed by automated DNA sequencing to establish the specific mutation in each family. Age at onset and at death, male phenotypes, genetic status of women, and the effect of family and of latitude of origin were also studied. RESULTS: We identified thirty-six different mutations (twelve novel). This population had an important allelic heterogeneity, as only p.Arg518Gln was repeatedly found (three families). Four cases carried de novo mutations. Intra-familiar phenotype variability was observed in all families. Out of 87 affected males identified, 65% had the cerebral phenotype (CALD). The mean (95% CI) ages at onset and at death of the CALD were 10.9 (9.1-12.7) and 24.7 (19.8-29.6) years. No association was found between phenotypic manifestations and latitude of origin. One index-case was a girl with CALD who carried an ABCD1 mutation, and had completely skewed X inactivation. CONCLUSIONS: This study extends the spectrum of mutations in X-ALD, confirms the high rates of de novo mutations and the absence of common mutations, and suggests a possible high frequency of cerebral forms in our population.

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Sentences [show]
No. Sentence Comment
26 NBF Inherited Northern Brazil 31/Male CALD p.Arg518Gln (Imamura A et al., 1997) E6 Missense c.1553G.A CGG.CAG NBF de novo Southern Brazil 32/Male CALD p.Arg401Trp (Takano H et al., 1999) E3 Missense c.1201C.T CGG.UGG - ND Southern Brazil 33/Male CALD p.Thr632Pro (http://www.x-ald.nl) E9 Missense c.1894A.C ACC.CCC NBF de novo Southern Brazil 36/Male CALD p.Arg518Gln (Imamura A et al., 1997) E6 Missense c.1553G.A CGG.CAG NBF Inherited Northern Brazil 37/Male CALD p.Ser358X (Coll MJ et al., 2005) E2 Stop codon c.1073C.G UCA.UGA TMD Inherited Southern Brazil 38/Male CALD p.Ile481Phe # E5 Missense c.1441A.T AUC.UUC NBF Inherited Northern Brazil 39/Male AMN p.Arg389Gly (Krasemann EW et al., 1996) E3 Missense c.1165C.G CGC.GGC - ND Argentina 40/Male AMN p.Gln472fsX83 (Barcelo &#b4; A et al., 1994) E5 Frameshift+stop codon c.1415_1416delAG Truncated - Inherited Uruguay 41/Male CALD p.Ala95fsX11 # E1B Frameshift+stop codon c.283_284ins9 Elonged TMD Inherited Southern Brazil 44/Male CALD p.Ser606Pro (Feigenbaum V et al. 1996) E8 Missense c.1816T.C UCG.CCG NBF Inherited Northern Brazil 45/Male CALD p.Gln55X # E1A Stop codon c.163C.T Truncated - Inherited Northern Brazil 46/Male CALD p.Glu199Lys (http://www.x-ald.nl) E1C Missense c.595G.A GAG.AAG TMD ND Northern Brazil common central demyelinative disease. Login to comment
90 The remaining four novel sequence variations (p.Pro623Leu, p.Leu628Glu, p.Ile481Phe and p.Arg401Gly), if not causative of the disease, were linked to X-ALD genotype by DNA study of hemizygous affected males. Login to comment
91 PolyPhen analysis of the four novel missense mutations considered three of them to be ''probably damaging`` p.Arg401Gly (PSIC score 3.071), p.Pro623Leu (PSIC score 3.379), and p.Leu628Glu (PSIC score 2.417), whereas p.Ile481Phe was considered ''benign`` Figure 1. Login to comment