rs886039777
Positions:
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The ENST00000356577.10(SON):c.286C>T(p.Gln96Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.
Frequency
Genomes: not found (cov: 33)
Consequence
SON
ENST00000356577.10 stop_gained
ENST00000356577.10 stop_gained
Scores
4
2
1
Clinical Significance
Conservation
PhyloP100: 2.87
Genes affected
SON (HGNC:11183): (SON DNA and RNA binding protein) This gene encodes a protein that contains multiple simple repeats. The encoded protein binds RNA and promotes pre-mRNA splicing, particularly of transcripts with poor splice sites. The protein also recognizes a specific DNA sequence found in the human hepatitis B virus (HBV) and represses HBV core promoter activity. There is a pseudogene for this gene on chromosome 1. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 18 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 21-33549517-C-T is Pathogenic according to our data. Variant chr21-33549517-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 252926.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr21-33549517-C-T is described in Lovd as [Pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
SON | NM_138927.4 | c.286C>T | p.Gln96Ter | stop_gained | 3/12 | ENST00000356577.10 | NP_620305.3 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
SON | ENST00000356577.10 | c.286C>T | p.Gln96Ter | stop_gained | 3/12 | 1 | NM_138927.4 | ENSP00000348984 | P3 |
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD3 genomes
Cov.:
33
GnomAD4 exome Cov.: 30
GnomAD4 exome
Cov.:
30
GnomAD4 genome Cov.: 33
GnomAD4 genome
Cov.:
33
ClinVar
Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
ZTTK syndrome Pathogenic:2
Pathogenic, criteria provided, single submitter | curation | Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard | May 02, 2023 | The heterozygous p.Gln96Ter variant in SON was identified by our study in one individual with hypoplasia of the corpus callosum and global developmental delay. Trio exome analysis showed this variant to be de novo. The p.Gln96Ter has been previously reported in one individual with ZTTK syndrome (PMID: 27545676) and was found to be de novo in this individual with confirmed paternity and maternity. The number of reported affected individuals with this variant is slightly greater than expected compared to non-affected individuals with this variant. This variant has also been reported in ClinVar (Variation ID: 252926) and has been interpreted as pathogenic by OMIM and as likely pathogenic by Baylor Genetics. This variant was absent from large population studies. This nonsense variant leads to a premature termination codon at position 96, which is predicted to lead to a truncated or absent protein. Heterozygous loss of function of the SON gene is an established disease mechanism in autosomal dominant ZTTK syndrome. In summary, this variant meets criteria to be classified as pathogenic for autosomal dominant ZTTK syndrome. ACMG/AMP Criteria applied: PVS1, PS2_Moderate, PS4_Supporting, PM2_Supporting (Richards 2015). - |
Pathogenic, no assertion criteria provided | literature only | OMIM | Nov 02, 2016 | - - |
Global developmental delay;C2315100:Failure to thrive Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Jun 21, 2016 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Uncertain
D
MutationTaster
Benign
A;A;A;A;D
Vest4
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at