rs116862304
Variant summary
Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BS1BS2
The NM_020988.3(GNAO1):c.993C>T(p.Asn331=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0167 in 1,613,244 control chromosomes in the GnomAD database, including 270 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).
Frequency
Genomes: 𝑓 0.011 ( 12 hom., cov: 31)
Exomes 𝑓: 0.017 ( 258 hom. )
Consequence
GNAO1
NM_020988.3 synonymous
NM_020988.3 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: 1.46
Genes affected
GNAO1 (HGNC:4389): (G protein subunit alpha o1) The protein encoded by this gene represents the alpha subunit of the Go heterotrimeric G-protein signal-transducing complex. Defects in this gene are a cause of early-onset epileptic encephalopathy. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2015]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -19 ACMG points.
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.46).
BP6
?
Variant 16-56354981-C-T is Benign according to our data. Variant chr16-56354981-C-T is described in ClinVar as [Benign]. Clinvar id is 241368.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
?
Synonymous conserved (PhyloP=1.46 with no splicing effect.
BS1
?
Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.0111 (1688/152292) while in subpopulation NFE AF= 0.0194 (1317/68036). AF 95% confidence interval is 0.0185. There are 12 homozygotes in gnomad4. There are 747 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.
BS2
?
High AC in GnomAd at 1689 AD gene.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
GNAO1 | NM_020988.3 | c.993C>T | p.Asn331= | synonymous_variant | 8/9 | ENST00000262493.12 | |
GNAO1 | XM_011523003.4 | c.867C>T | p.Asn289= | synonymous_variant | 8/9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
GNAO1 | ENST00000262493.12 | c.993C>T | p.Asn331= | synonymous_variant | 8/9 | 1 | NM_020988.3 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0111 AC: 1689AN: 152174Hom.: 12 Cov.: 31
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GnomAD3 exomes AF: 0.0108 AC: 2728AN: 251456Hom.: 22 AF XY: 0.0106 AC XY: 1439AN XY: 135904
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GnomAD4 exome AF: 0.0172 AC: 25178AN: 1460952Hom.: 258 Cov.: 30 AF XY: 0.0166 AC XY: 12082AN XY: 726788
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GnomAD4 genome ? AF: 0.0111 AC: 1688AN: 152292Hom.: 12 Cov.: 31 AF XY: 0.0100 AC XY: 747AN XY: 74458
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ClinVar
Significance: Benign
Submissions summary: Benign:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not provided Benign:2
Benign, criteria provided, single submitter | clinical testing | Athena Diagnostics | Jun 26, 2017 | - - |
Benign, criteria provided, single submitter | clinical testing | GeneDx | Jul 26, 2019 | - - |
Inborn genetic diseases Benign:1
Benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Jun 08, 2016 | This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. - |
Early infantile epileptic encephalopathy with suppression bursts Benign:1
Benign, criteria provided, single submitter | clinical testing | Invitae | Feb 01, 2024 | - - |
Computational scores
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Name
Calibrated prediction
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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