9-27557921-T-C
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Variant summary
Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_StrongBA1
The NM_018325.5(C9orf72):c.855+570A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.195 in 151,720 control chromosomes in the GnomAD database, including 3,098 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.
Frequency
Genomes: 𝑓 0.19 ( 3098 hom., cov: 32)
Consequence
C9orf72
NM_018325.5 intron
NM_018325.5 intron
Scores
2
Clinical Significance
Not reported in ClinVar
Conservation
PhyloP100: -0.186
Genes affected
C9orf72 (HGNC:28337): (C9orf72-SMCR8 complex subunit) The protein encoded by this gene plays an important role in the regulation of endosomal trafficking, and has been shown to interact with Rab proteins that are involved in autophagy and endocytic transport. Expansion of a GGGGCC repeat from 2-22 copies to 700-1600 copies in the intronic sequence between alternate 5' exons in transcripts from this gene is associated with 9p-linked ALS (amyotrophic lateral sclerosis) and FTD (frontotemporal dementia) (PMID: 21944778, 21944779). Studies suggest that hexanucleotide expansions could result in the selective stabilization of repeat-containing pre-mRNA, and the accumulation of insoluble dipeptide repeat protein aggregates that could be pathogenic in FTD-ALS patients (PMID: 23393093). Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2016]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -12 ACMG points.
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.88).
BA1
GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.231 is higher than 0.05.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.195 AC: 29508AN: 151606Hom.: 3097 Cov.: 32
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We have no GnomAD4 exomes data on this position. Probably position not covered by the project.
GnomAD4 genome AF: 0.195 AC: 29511AN: 151720Hom.: 3098 Cov.: 32 AF XY: 0.193 AC XY: 14279AN XY: 74160
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ClinVar
Not reported inComputational scores
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at