chr19-1221224-C-T
Position:
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1PM2
The NM_000455.5(STK11):c.746C>T(p.Thr249Ile) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,460,126 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. T249T) has been classified as Likely benign.
Frequency
Genomes: not found (cov: 33)
Exomes 𝑓: 6.8e-7 ( 0 hom. )
Consequence
STK11
NM_000455.5 missense
NM_000455.5 missense
Scores
3
7
5
Clinical Significance
Conservation
PhyloP100: 6.06
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]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 4 ACMG points.
PM1
In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 17 uncertain in NM_000455.5
PM2
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
STK11 | NM_000455.5 | c.746C>T | p.Thr249Ile | missense_variant | 6/10 | ENST00000326873.12 | |
STK11 | NM_001407255.1 | c.746C>T | p.Thr249Ile | missense_variant | 6/9 | ||
STK11 | NR_176325.1 | n.2013C>T | non_coding_transcript_exon_variant | 7/11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
STK11 | ENST00000326873.12 | c.746C>T | p.Thr249Ile | missense_variant | 6/10 | 1 | NM_000455.5 | P1 |
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD3 genomes
Cov.:
33
GnomAD4 exome AF: 6.85e-7 AC: 1AN: 1460126Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1AN XY: 726322
GnomAD4 exome
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1
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1460126
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31
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1
AN XY:
726322
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GnomAD4 genome Cov.: 33
GnomAD4 genome
Cov.:
33
Bravo
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:6
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Peutz-Jeghers syndrome Uncertain:3
Uncertain significance, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Jul 15, 2021 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jun 14, 2016 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jun 23, 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 STK11 protein function. ClinVar contains an entry for this variant (Variation ID: 328231). This variant has not been reported in the literature in individuals affected with STK11-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces threonine, which is neutral and polar, with isoleucine, which is neutral and non-polar, at codon 249 of the STK11 protein (p.Thr249Ile). - |
Hereditary cancer-predisposing syndrome Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Dec 05, 2023 | This missense variant replaces threonine with isoleucine at codon 249 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 STK11-related disorders 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | May 11, 2023 | The p.T249I variant (also known as c.746C>T), located in coding exon 6 of the STK11 gene, results from a C to T substitution at nucleotide position 746. The threonine at codon 249 is replaced by isoleucine, an amino acid with 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. - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Feb 27, 2020 | Not observed in large population cohorts (Lek 2016); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Uncertain
CADD
Uncertain
DANN
Uncertain
DEOGEN2
Benign
T;T
Eigen
Benign
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D;D
M_CAP
Uncertain
D
MetaRNN
Uncertain
D;D
MetaSVM
Benign
T
MutationTaster
Benign
D
PrimateAI
Pathogenic
D
Sift4G
Benign
T;T
Polyphen
0.32
.;B
Vest4
MutPred
Loss of glycosylation at T249 (P = 0.1293);Loss of glycosylation at T249 (P = 0.1293);
MVP
MPC
1.9
ClinPred
D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
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Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at