rs587782199
Variant summary
Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM1BP4_ModerateBP6BS2
The NM_000455.5(STK11):c.817G>A(p.Ala273Thr) variant causes a missense change. The variant allele was found at a frequency of 0.000013 in 1,610,686 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A273V) has been classified as Uncertain significance.
Frequency
Consequence
NM_000455.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -5 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
STK11 | NM_000455.5 | c.817G>A | p.Ala273Thr | missense_variant | 6/10 | ENST00000326873.12 | |
STK11 | NM_001407255.1 | c.817G>A | p.Ala273Thr | missense_variant | 6/9 | ||
STK11 | NR_176325.1 | n.2084G>A | non_coding_transcript_exon_variant | 7/11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
STK11 | ENST00000326873.12 | c.817G>A | p.Ala273Thr | missense_variant | 6/10 | 1 | NM_000455.5 | P1 |
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152198Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.00000821 AC: 2AN: 243660Hom.: 0 AF XY: 0.0000151 AC XY: 2AN XY: 132690
GnomAD4 exome AF: 0.0000137 AC: 20AN: 1458488Hom.: 0 Cov.: 31 AF XY: 0.0000138 AC XY: 10AN XY: 725342
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152198Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1AN XY: 74336
ClinVar
Submissions by phenotype
Peutz-Jeghers syndrome Uncertain:3Benign:1
Uncertain significance, criteria provided, single submitter | clinical testing | Revvity Omics, Revvity | Jun 09, 2023 | - - |
Likely benign, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Nov 30, 2023 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Dec 07, 2023 | This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 273 of the STK11 protein (p.Ala273Thr). This variant is present in population databases (rs587782199, gnomAD 0.003%). This missense change has been observed in individual(s) with breast cancer (PMID: 26898890, 30287823). ClinVar contains an entry for this variant (Variation ID: 142052). 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) performed at Invitae indicates that this missense variant is not expected to disrupt STK11 protein function with a negative predictive value of 95%. 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Jul 15, 2021 | - - |
not provided Uncertain:3
Uncertain significance, criteria provided, single submitter | clinical testing | Quest Diagnostics Nichols Institute San Juan Capistrano | Sep 08, 2023 | In the published literature, the variant has been reported in a woman affected with breast cancer (PMID: 26898890 (2016)). This variant was also identified in both affected and unaffected individuals in large-scale breast cancer association studies (PMIDs: 30287823 (2018), 33471991 (2021), see also LOVD (http://databases.lovd.nl/shared/)). The frequency of this variant in the general population, 0.0000082 (2/243660 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is benign. Based on the available information, we are unable to determine the clinical significance of this variant. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Jul 14, 2017 | Variant summary: The STK11 c.817G>A (p.Ala273Thr) variant located in the protein kinase-like domain (via InterPro) causes a missense change involving the alteration of a conserved nucleotide. 4/5 in silico tools predict a benign outcome for this variant. The variant of interest has been found in a large, broad control population, ExAC in 0.0000101, which is approximately 2 times the estimated maximal expected allele frequency of a pathogenic STK11 variant (0.0000063), suggesting this variant is likely a benign polymorphism. However, this variant was reported in a patient with BrC (Caminsky_2016). Multiple clinical diagnostic laboratories/reputable databases classified this variant as uncertain significance. Taken together, this variant is classified as a "Variant of Uncertain Significance (VUS)," until more definitive clinical and functional studies become available. - |
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Jun 14, 2023 | Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Observed in individuals with breast cancer, but also in unaffected controls (Caminsky et al., 2016; Momozawa et al., 2018); This variant is associated with the following publications: (PMID: 15863673, 30287823, 26898890, 26010451) - |
Hereditary cancer-predisposing syndrome Benign:2
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Apr 11, 2019 | This alteration is classified as likely 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. - |
Likely benign, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Jul 29, 2015 | - - |
Generalized juvenile polyposis/juvenile polyposis coli Uncertain:1
Uncertain significance, no assertion criteria provided | clinical testing | Department of Pathology and Laboratory Medicine, Sinai Health System | - | The STK11 p.Ala273Thr variant was identified in 1 of 576 proband chromosomes (frequency: 0.002) from individuals or families with breast or ovarian cancer (Caminsky 2016). The variant was also identified in dbSNP (ID: rs587782199) as "With Uncertain significance allele", ClinVar (classified as likely benign by Ambry Genetics; as uncertain significance by Invitae, GeneDx, and Integrated Genetics/Laboratory Corporation of America), and in Cosmic (1x in Large intestine). The variant was not identified in MutDB, LOVD 3.0, Zhejiang University Database, or Insight Hereditary Tumors Database. The variant was identified in control databases in 2 of 241530 chromosomes at a frequency of 0.000008 (Genome Aggregation Database Feb 27, 2017). The variant was observed in the following populations: Latino in 1 of 33228 chromosomes (freq: 0.00003), European in 1 of 109252 chromosomes (freq: 0.000009), while the variant was not observed in the African, Other, Ashkenazi Jewish, East Asian, Finnish, and South Asian populations. The p.Ala273 residue is not conserved in mammals and computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) do not suggest a high likelihood of impact to the protein; however, this information is not predictive enough to rule out pathogenicity. The variant occurs outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) do not predict a difference in splicing. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time. This variant is classified as a variant of uncertain significance. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at