rs587780717
Variant summary
Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM1BP4_ModerateBP6BS2
The NM_000455.5(STK11):c.440G>A(p.Arg147His) variant causes a missense change. The variant allele was found at a frequency of 0.0000135 in 1,561,052 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
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 rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
STK11 | NM_000455.5 | c.440G>A | p.Arg147His | missense_variant | Exon 3 of 10 | ENST00000326873.12 | NP_000446.1 | |
STK11 | NM_001407255.1 | c.440G>A | p.Arg147His | missense_variant | Exon 3 of 9 | NP_001394184.1 | ||
STK11 | NR_176325.1 | n.1707G>A | non_coding_transcript_exon_variant | Exon 4 of 11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
STK11 | ENST00000326873.12 | c.440G>A | p.Arg147His | missense_variant | Exon 3 of 10 | 1 | NM_000455.5 | ENSP00000324856.6 | ||
STK11 | ENST00000652231.1 | c.440G>A | p.Arg147His | missense_variant | Exon 3 of 9 | ENSP00000498804.1 | ||||
STK11 | ENST00000585748.3 | c.68G>A | p.Arg23His | missense_variant | Exon 5 of 12 | 3 | ENSP00000477641.2 | |||
STK11 | ENST00000593219.5 | n.*265G>A | downstream_gene_variant | 3 | ENSP00000466610.1 |
Frequencies
GnomAD3 genomes AF: 0.00000662 AC: 1AN: 151078Hom.: 0 Cov.: 34
GnomAD3 exomes AF: 0.0000229 AC: 5AN: 218366Hom.: 0 AF XY: 0.0000169 AC XY: 2AN XY: 118136
GnomAD4 exome AF: 0.0000142 AC: 20AN: 1409974Hom.: 0 Cov.: 36 AF XY: 0.0000157 AC XY: 11AN XY: 699496
GnomAD4 genome AF: 0.00000662 AC: 1AN: 151078Hom.: 0 Cov.: 34 AF XY: 0.00 AC XY: 0AN XY: 73838
ClinVar
Submissions by phenotype
Peutz-Jeghers syndrome Uncertain:2Benign:1
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This missense variant replaces arginine with histidine at codon 147 of the STK11 protein. Computational prediction suggests that this variant may not impact protein structure and function. To our knowledge, functional studies have not been performed for this variant. This variant has been reported in an individual affected with pancreatic cancer (PMID: 35171259), an individual affected with breast cancer (DOI: 10.2298/GENSR1702399A), and an individual affected with colorectal cancer (PMID: 34326862). This variant has been identified in 5/218366 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
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not provided Uncertain:2
Not observed at a significant frequency in large population cohorts (Lek 2016); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Observed in individuals with a personal history of sporadic breast cancer (Antov 2017) -
The STK11 c.440G>A (p.Arg147His) variant has been reported in the published literature in individuals with a personal or family history of breast and/or ovarian cancer (PMID: 34284872 (2022)), colorectal cancer (PMID: 34326862 (2021)), pancreatic cancer (PMID: 35171259 (2022)), various cancer types (PMID: 37937776 (2023)), and reportedly healthy individuals (PMID: 30476936 (2019)). The frequency of this variant in the general population, 0.000023 (5/218366 chromosomes in total subpopulation (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is higher than would generally be expected for pathogenic variants in this gene. 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. -
Hereditary cancer-predisposing syndrome Uncertain:1Benign:1
This missense variant replaces arginine with histidine at codon 147 of the STK11 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been performed for this variant. This variant has been reported in an individual affected with breast cancer in the literature (doi: 10.2298/GENSR1702399A). This variant has been identified in 5/218366 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
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. -
not specified Uncertain:1
Variant summary: STK11 c.440G>A (p.Arg147His) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 2.3e-05 in 218366 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.440G>A has been reported in the literature in individuals affected with breast and/or ovarian cancer, colorectal cancer, or pancreatic ductal adenocarcinoma without strong evidence of causality (e.g. Bhai_2021, Krivokuca_2022, Yin_2022). These reports do not provide unequivocal conclusions about association of the variant with Hereditary Breast And Ovarian Cancer Syndrome. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 35171259, 34326862, 34284872). ClinVar contains an entry for this variant (Variation ID: 135921). Based on the evidence outlined above, the variant was classified as uncertain significance. -
Breast and/or ovarian cancer Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at