ABCD1 p.Leu628Glu
| Predicted by SNAP2: | A: D (75%), C: D (63%), D: D (91%), E: D (91%), F: D (71%), G: D (91%), H: D (85%), I: N (53%), K: D (91%), M: N (66%), N: D (85%), P: D (91%), Q: D (85%), R: D (91%), S: D (85%), T: D (85%), V: D (53%), W: D (85%), Y: D (85%), |
| Predicted by PROVEAN: | A: D, C: D, D: D, E: D, F: D, G: D, H: D, I: N, K: D, M: N, N: D, P: D, Q: D, R: D, S: D, T: D, V: D, W: D, Y: D, |
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[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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No. Sentence Comment
24 Family/Index case Phenotype at diagnosis Mutation Exon/IVS Mutation type Effect on protein (cDNA) Effect on protein (mRNA) Protein localization Origin of mutations Origin of family 1/Female asymptomatic p.Gly512Ser (Feigenbaum V et al. 1996) E6 Missense c.1534G.A GGC.AGC NBF de novo Southern Brazil 2/Female asymptomatic p.Ser606Leu (Fanen P et al., 1994) E8 Missense c.1817C.T UCG.UUG NBF Inherited Southern Brazil 3/Male AMN p.Trp601X (Gartner J et al.,1998) E8 Stop codon c.1802C.A Truncated NBF Inherited Southern Brazil 4/Female asymptomatic p.Arg617His (Fanen P et al., 1994) E8 Missense c.1850G.A CGC.CAC NBF ND Southern Brazil 5/Male AMN p.Pro623Leu # E9 Missense c.1868C.T CCC.CUC NBF Inherited Southern Brazil 6/Male AO p.Trp326X (Barcelo A et al, 1996) E2 Stop codon c.978G.A Truncated TMD Inherited Southern Brazil 8/Female asymptomatic p.Glu577X # E7 Stop codon c.1729G.T Truncated NBF Inherited Southern Brazil 9/Male asymptomatic p.Arg554His (Smith KD et al., 1999) E7 Missense c.1661G.A CGU.CAU NBF Inherited Southern Brazil 10/Male CALD p.Arg518Gln (Imamura A et al., 1997) E6 Missense c.1553G.A CGG.CAG NBF Inherited Southern Brazil 11/Male AO p.Tyr33_Pro34fsX34 # E1A Frameshift+stop codon c.99_102delC Truncated - Inherited Southern Brazil 12/Female asymptomatic p.Gly266Arg (Fuchs S et al., 1994) E7 Missense c.1653insG Truncated TMD ND Southern Brazil 20/Male CALD p.Arg538fs # E6 Frameshift c.1614_1615dup27 Elonged NBF de novo Southern Brazil 21/Male CALD p.Ala232fsX64 # E2 Frameshift+stop codon c.696_697del11 Truncated TMD Inherited Southern Brazil 22/Male CALD p.Trp137fsX57 # E1B Frameshift+stop codon c.411_412insC Truncated TMD Inherited Northern Brazil 23/Male asymptomatic p.Trp679X (Waterham HR et al, 1998) E10 Stop codon c.2037G.A Truncated NBF ND Southern Brazil 24/Male AO p.Tyr296Cys (Takano H et al., 1999) E2 Missense c.887A.G UAU.UGU TMD Inherited Southern Brazil 27/Male CALD p.Leu628Glu # E9 Missense c.1883T.A CUG.GAG NBF Inherited Southern Brazil 29/Male CALD p.Pro546fsX?
X
ABCD1 p.Leu628Glu 22479560:24:1922
status: NEW90 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.
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ABCD1 p.Leu628Glu 22479560:90:61
status: NEW91 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.
X
ABCD1 p.Leu628Glu 22479560:91:178
status: NEW