rs763353991

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM1PM2PP3

The NM_000455.5(STK11):​c.463G>A​(p.Gly155Arg) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000021 in 1,429,942 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G155E) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 34)
Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

STK11
NM_000455.5 missense, splice_region

Scores

4
3
12
Splicing: ADA: 0.001546
2

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:9

Conservation

PhyloP100: 9.70

Publications

4 publications found
Variant links:
Genes affected
STK11 (HGNC:11389): (serine/threonine kinase 11) The protein encoded by this gene is a serine/threonine kinase that regulates cell polarity and energy metabolism and functions as a tumor suppressor. Mutations in this gene have been associated with the autosomal dominant Peutz-Jeghers syndrome, as well as with skin, pancreatic, and testicular cancers. [provided by RefSeq, May 2022]
STK11 Gene-Disease associations (from GenCC):
  • familial pancreatic carcinoma
    Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
  • Peutz-Jeghers syndrome
    Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Orphanet, Genomics England PanelApp, G2P
  • familial ovarian cancer
    Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PM1
In a hotspot region, there are 6 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 36 uncertain in NM_000455.5
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.758

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
STK11NM_000455.5 linkc.463G>A p.Gly155Arg missense_variant, splice_region_variant Exon 3 of 10 ENST00000326873.12 NP_000446.1 Q15831-1A0A0S2Z4D1
STK11NM_001407255.1 linkc.463G>A p.Gly155Arg missense_variant, splice_region_variant Exon 3 of 9 NP_001394184.1
STK11NR_176325.1 linkn.1730G>A splice_region_variant, non_coding_transcript_exon_variant Exon 4 of 11

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
STK11ENST00000326873.12 linkc.463G>A p.Gly155Arg missense_variant, splice_region_variant Exon 3 of 10 1 NM_000455.5 ENSP00000324856.6 Q15831-1
STK11ENST00000652231.1 linkc.463G>A p.Gly155Arg missense_variant, splice_region_variant Exon 3 of 9 ENSP00000498804.1 Q15831-2
STK11ENST00000585748.3 linkc.91G>A p.Gly31Arg missense_variant, splice_region_variant Exon 5 of 12 3 ENSP00000477641.2 A0A087WT72
STK11ENST00000593219.6 linkn.*288G>A splice_region_variant, non_coding_transcript_exon_variant Exon 4 of 11 3 ENSP00000466610.1 K7EMR0
STK11ENST00000593219.6 linkn.*288G>A 3_prime_UTR_variant Exon 4 of 11 3 ENSP00000466610.1 K7EMR0

Frequencies

GnomAD3 genomes
Cov.:
34
GnomAD2 exomes
AF:
0.00
AC:
0
AN:
196374
AF XY:
0.00
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000210
AC:
3
AN:
1429942
Hom.:
0
Cov.:
52
AF XY:
0.00000424
AC XY:
3
AN XY:
708332
show subpopulations
African (AFR)
AF:
0.0000304
AC:
1
AN:
32940
American (AMR)
AF:
0.00
AC:
0
AN:
40426
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25514
East Asian (EAS)
AF:
0.0000264
AC:
1
AN:
37868
South Asian (SAS)
AF:
0.0000122
AC:
1
AN:
81716
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
49586
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5690
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1097024
Other (OTH)
AF:
0.00
AC:
0
AN:
59178
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
34
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.00000756
ExAC
AF:
0.00000846
AC:
1

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:9
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Peutz-Jeghers syndrome Uncertain:4
May 14, 2024
All of Us Research Program, National Institutes of Health
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This missense variant replaces glycine with arginine at codon 155 of the STK11 protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with hereditary cancer in the literature. This variant has not been identified 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. -

-
Neuberg Centre For Genomic Medicine, NCGM
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The missense variant p.G155R in STK11 (NM_000455.5) has not been reported previously as a pathogenic variant nor as a benign variant, to our knowledge. is novel (not in any individuals) in gnomAD ExomesThe p.G155R variant is novel (not in any individuals) in 1000 Genomes. There is a moderate physicochemical difference between glycine and arginine. The p.G155R missense variant is predicted to be damaging by both SIFT and PolyPhen2. The glycine residue at codon 155 of STK11 is conserved in all mammalian species. The nucleotide c.463 in STK11 is predicted conserved by GERP++ and PhyloP across 100 vertebrates. For these reasons, this variant has been classified as Uncertain Significance. -

Jul 15, 2021
Genome-Nilou Lab
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Jun 10, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 155 of the STK11 protein (p.Gly155Arg). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with breast cancer (PMID: 34326862). ClinVar contains an entry for this variant (Variation ID: 234791). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. 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. -

Hereditary cancer-predisposing syndrome Uncertain:2
May 02, 2024
Color Diagnostics, LLC DBA Color Health
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This missense variant replaces glycine with arginine at codon 155 of the STK11 protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function. Functional studies have shown that this variant did not impact autophosphorylation activity (PMID: 34849607). This variant has been reported in individuals affected with breast cancer (PMID: 34326862). This variant has not been identified 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. -

Mar 20, 2023
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The p.G155R variant (also known as c.463G>A), located in coding exon 3 of the STK11 gene, results from a G to A substitution at nucleotide position 463. The glycine at codon 155 is replaced by arginine, an amino acid with dissimilar properties. This alteration demonstrated retained autophosphorylation activity in an in vitro kinase assay (Donnelly LL et al. Carcinogenesis, 2021 Dec;42:1428-1438). 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. -

not specified Uncertain:1
Jan 29, 2024
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Variant summary: STK11 c.463G>A (p.Gly155Arg) results in a non-conservative amino acid change located in the Protein kinase domain (IPR000719) of the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. In addition, the variant is located close to a splice-site, therefore could also affect splicing: consensus agreement among computation tools predicts no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 2.1e-06 in 1424252 control chromosomes (gnomAD v4). c.463G>A has been reported in the literature in individuals affected with a personal and/or family history of (unspecified) cancer (Bhai_2021). These report(s) do not provide unequivocal conclusions about association of the variant with Peutz-Jeghers Syndrome. At least one publication reports experimental evidence evaluating an impact on protein function and demonstrated no damaging effect for this variant (Donnelly_2021). ClinVar contains an entry for this variant (Variation ID: 234791). Based on the evidence outlined above, the variant was classified as uncertain significance. -

not provided Uncertain:1
Oct 03, 2023
GeneDx
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

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 a personal and family history of breast cancer (Bhai et al., 2021); Published functional studies demonstrate no damaging effect (Donnelly et al., 2021); This variant is associated with the following publications: (PMID: 15863673, 34326862, 34849607) -

Melanoma, cutaneous malignant, susceptibility to, 1 Uncertain:1
Aug 18, 2023
Baylor Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.29
BayesDel_addAF
Pathogenic
0.16
D
BayesDel_noAF
Uncertain
0.0
CADD
Uncertain
24
DANN
Benign
0.97
DEOGEN2
Benign
0.31
T;T
Eigen
Benign
-0.13
Eigen_PC
Benign
0.019
FATHMM_MKL
Pathogenic
1.0
D
LIST_S2
Uncertain
0.92
D;D
M_CAP
Benign
0.070
D
MetaRNN
Pathogenic
0.76
D;D
MetaSVM
Benign
-0.94
T
MutationAssessor
Benign
0.17
.;N
PhyloP100
9.7
PrimateAI
Pathogenic
0.85
D
PROVEAN
Benign
-2.1
.;N
REVEL
Uncertain
0.38
Sift
Benign
0.45
.;T
Sift4G
Benign
0.58
T;T
Polyphen
0.80
.;P
Vest4
0.94
MutPred
0.53
Loss of catalytic residue at C158 (P = 0.0867);Loss of catalytic residue at C158 (P = 0.0867);
MVP
0.65
MPC
1.2
ClinPred
0.91
D
GERP RS
4.5
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.36
gMVP
0.93
Mutation Taster
=12/88
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.0015
dbscSNV1_RF
Benign
0.062
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs763353991; hg19: chr19-1219411; COSMIC: COSV105889104; API