19-10984275-A-C
Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP2
The NM_001387283.1(SMARCA4):c.124A>C(p.Met42Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★★). Another nucleotide change resulting in same amino acid change has been previously reported as Uncertain significancein ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M42I) has been classified as Uncertain significance.
Frequency
Consequence
NM_001387283.1 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 3 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SMARCA4 | NM_001387283.1 | c.124A>C | p.Met42Leu | missense_variant | 2/36 | ENST00000646693.2 | |
SMARCA4 | NM_003072.5 | c.124A>C | p.Met42Leu | missense_variant | 2/35 | ENST00000344626.10 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SMARCA4 | ENST00000646693.2 | c.124A>C | p.Met42Leu | missense_variant | 2/36 | NM_001387283.1 | |||
SMARCA4 | ENST00000344626.10 | c.124A>C | p.Met42Leu | missense_variant | 2/35 | 1 | NM_003072.5 | P4 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD4 exome Cov.: 33
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Rhabdoid tumor predisposition syndrome 2 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jan 18, 2023 | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on SMARCA4 protein function. ClinVar contains an entry for this variant (Variation ID: 1518042). This variant has not been reported in the literature in individuals affected with SMARCA4-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces methionine, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 42 of the SMARCA4 protein (p.Met42Leu). - |
Hereditary cancer-predisposing syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Apr 24, 2020 | The p.M42L variant (also known as c.124A>C), located in coding exon 1 of the SMARCA4 gene, results from an A to C substitution at nucleotide position 124. The methionine at codon 42 is replaced by leucine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
No publications associated with this variant yet.