19-1226469-A-G

Variant names:

• chr19-1226469-A-G
• rs1060499951
• NM_000455.5:c.1124A>G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_000455.5(STK11):​c.1124A>G​(p.Glu375Gly) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: STK11 NM_000455.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 5.58

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.28875348).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
STK11	NM_000455.5	c.1124A>G	p.Glu375Gly	missense_variant	Exon 9 of 10	ENST00000326873.12	NP_000446.1
STK11	NR_176325.1	n.2391A>G		non_coding_transcript_exon_variant	Exon 10 of 11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
STK11	ENST00000326873.12	c.1124A>G	p.Glu375Gly	missense_variant	Exon 9 of 10	1	NM_000455.5	ENSP00000324856.6
STK11	ENST00000585748.3	c.752A>G	p.Glu251Gly	missense_variant	Exon 11 of 12	3		ENSP00000477641.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Peutz-Jeghers syndrome Uncertain:1

Jul 24, 2016

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glutamic acid with glycine at codon 375 of the STK11 protein (p.Glu375Gly). The glutamic acid residue is moderately conserved and there is a moderate physicochemical difference between glutamic acid and glycine. In summary, this variant is a novel missense change that is not predicted to affect protein function. There is no indication that it causes disease, but the available evidence is currently insufficient to prove that conclusively. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies. This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a STK11-related disease. -

Hereditary cancer-predisposing syndrome Uncertain:1

Feb 27, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.E375G variant (also known as c.1124A>G), located in coding exon 9 of the STK11 gene, results from an A to G substitution at nucleotide position 1124. The glutamic acid at codon 375 is replaced by glycine, an amino acid with similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.088
BayesDel_addAF	Benign	-0.031	T
BayesDel_noAF	Benign	-0.28
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.32	T;T
Eigen	Benign	-0.12
Eigen_PC	Benign	-0.032
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.82	T;T
M_CAP	Uncertain	0.14	D
MetaRNN	Benign	0.29	T;T
MetaSVM	Benign	-0.74	T
MutationAssessor	Benign	1.8	.;L
PrimateAI	Benign	0.40	T
PROVEAN	Benign	-2.1	.;N
REVEL	Benign	0.14
Sift	Uncertain	0.010	.;D
Sift4G	Benign	0.27	T;T
Polyphen		0.10	.;B
Vest4		0.44
MutPred		0.24		Loss of stability (P = 0.0633);Loss of stability (P = 0.0633);
MVP		0.63
MPC		0.046
ClinPred		0.88	D
GERP RS		3.3
Varity_R		0.12
gMVP		0.30

Splicing

Name	Calibrated prediction	Score	Prediction
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

LitVar

Other links and lift over

dbSNP: rs1060499951; hg19: chr19-1226468;