17-76733016-CA-C

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1PM2PP5_Moderate

The NM_001080510.5(METTL23):​c.126del​(p.Lys42AsnfsTer6) variant causes a frameshift change. The variant allele was found at a frequency of 0.000000695 in 1,439,842 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

METTL23
NM_001080510.5 frameshift

Scores

Not classified

Clinical Significance

Likely pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 4.44
Variant links:
Genes affected
METTL23 (HGNC:26988): (methyltransferase 23, arginine) The protein encoded by this gene functions as a transcription factor regulator in the transcriptional pathway for human cognition. It is a partner of the alpha subunit of the GA-binding protein transcription factor. Mutations in this gene cause mild autosomal recessive intellectual disability. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2014]

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 17-76733016-CA-C is Pathogenic according to our data. Variant chr17-76733016-CA-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 1324716.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
METTL23NM_001080510.5 linkuse as main transcriptc.126del p.Lys42AsnfsTer6 frameshift_variant 3/5 ENST00000341249.11

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
METTL23ENST00000341249.11 linkuse as main transcriptc.126del p.Lys42AsnfsTer6 frameshift_variant 3/51 NM_001080510.5 P1Q86XA0-1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
AF:
6.95e-7
AC:
1
AN:
1439842
Hom.:
0
Cov.:
33
AF XY:
0.00
AC XY:
0
AN XY:
714150
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
9.09e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33

ClinVar

Significance: Likely pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Intellectual disability, autosomal recessive 44 Pathogenic:1
Likely pathogenic, criteria provided, single submitterclinical testingRevvity Omics, RevvityOct 01, 2019- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr17-74729098; API