rs863224400
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_005359.6(SMAD4):c.1059C>G(p.Tyr353Ter) 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 (★★). Synonymous variant affecting the same amino acid position (i.e. Y353Y) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
Frequency
Consequence
NM_005359.6 stop_gained
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 18 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SMAD4 | NM_005359.6 | c.1059C>G | p.Tyr353Ter | stop_gained | 9/12 | ENST00000342988.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SMAD4 | ENST00000342988.8 | c.1059C>G | p.Tyr353Ter | stop_gained | 9/12 | 5 | NM_005359.6 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD4 exome Cov.: 31
GnomAD4 genome ? Cov.: 32
ClinVar
Submissions by phenotype
not provided Pathogenic:2
Likely pathogenic, criteria provided, single submitter | clinical testing | Quest Diagnostics Nichols Institute San Juan Capistrano | Mar 30, 2023 | This nonsense variant is predicted to cause the premature termination of SMAD4 protein synthesis. The variant has not been reported in individuals with SMAD4-related diseases in the published literature. It also has not been reported in large, multi-ethnic general populations (http://gnomad.broadinstitute.org). Based on the available information, this variant is classified as likely pathogenic. - |
Likely pathogenic, no assertion criteria provided | clinical testing | Mayo Clinic Laboratories, Mayo Clinic | - | - - |
Hereditary cancer-predisposing syndrome;C4707243:Familial thoracic aortic aneurysm and aortic dissection Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Ambry Genetics | Sep 30, 2021 | The p.Y353* pathogenic mutation (also known as c.1059C>G), located in coding exon 8 of the SMAD4 gene, results from a C to G substitution at nucleotide position 1059. This changes the amino acid from a tyrosine to a stop codon within coding exon 8. This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). This alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at