19-1226622-G-C

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_000455.5(STK11):c.1277G>C(p.Arg426Pro) variant causes a missense change. The variant allele was found at a frequency of 0.00000215 in 1,395,300 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R426G) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000022 ( 0 hom. )

Consequence

STK11
NM_000455.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 4.88

Publications

2 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

STK11 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
STK11	NM_000455.5 link	c.1277G>C	p.Arg426Pro	missense_variant	Exon 9 of 10	ENST00000326873.12	NP_000446.1	Q15831-1A0A0S2Z4D1
STK11	NR_176325.1 link	n.2544G>C		non_coding_transcript_exon_variant	Exon 10 of 11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
STK11	ENST00000326873.12 link	c.1277G>C	p.Arg426Pro	missense_variant	Exon 9 of 10	1	NM_000455.5	ENSP00000324856.6	Q15831-1
STK11	ENST00000585748.3 link	c.905G>C	p.Arg302Pro	missense_variant	Exon 11 of 12	3		ENSP00000477641.2	A0A087WT72
STK11	ENST00000593219.6 link	n.*1102G>C		non_coding_transcript_exon_variant	Exon 10 of 11	3		ENSP00000466610.1	K7EMR0
STK11	ENST00000593219.6 link	n.*1102G>C		3_prime_UTR_variant	Exon 10 of 11	3		ENSP00000466610.1	K7EMR0

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000215

AC:

AN:

1395300

Hom.:

Cov.:

AF XY:

0.00000145

AC XY:

AN XY:

688302

show subpopulations

African (AFR)

AF:

0.0000319

AC:

AN:

31314

American (AMR)

AF:

0.00

AC:

AN:

35604

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24980

East Asian (EAS)

AF:

0.0000279

AC:

AN:

35838

South Asian (SAS)

AF:

0.0000126

AC:

AN:

79366

European-Finnish (FIN)

AF:

0.00

AC:

AN:

46498

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4712

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1079236

Other (OTH)

AF:

0.00

AC:

AN:

57752

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Peutz-Jeghers syndrome

Uncertain:2

Oct 14, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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) performed at Invitae indicates that this missense variant is not expected to disrupt STK11 protein function. ClinVar contains an entry for this variant (Variation ID: 237795). 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 arginine, which is basic and polar, with proline, which is neutral and non-polar, at codon 426 of the STK11 protein (p.Arg426Pro). -

Jul 15, 2021

Genome-Nilou Lab

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Hereditary cancer-predisposing syndrome

Uncertain:2

Sep 01, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.R426P variant (also known as c.1277G>C), located in coding exon 9 of the STK11 gene, results from a G to C substitution at nucleotide position 1277. The arginine at codon 426 is replaced by proline, an amino acid with dissimilar properties. This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Apr 11, 2019

Color Diagnostics, LLC DBA Color Health

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

Uncertain

0.41

BayesDel_addAF

Uncertain

0.016

BayesDel_noAF

Benign

-0.21

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.30

T;T

Eigen

Uncertain

0.24

Eigen_PC

Uncertain

0.30

FATHMM_MKL

Benign

0.71

LIST_S2

Uncertain

0.89

D;D

M_CAP

Uncertain

0.25

MetaRNN

Uncertain

0.62

D;D

MetaSVM

Benign

-0.61

MutationAssessor

Benign

1.8

.;L

PhyloP100

4.9

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-1.4

.;N

REVEL

Benign

0.22

Sift

Uncertain

0.0070

.;D

Sift4G

Benign

0.096

T;T

Polyphen

0.53

.;P

Vest4

0.69

MutPred

0.32

.;Gain of catalytic residue at R426 (P = 0.0502);

MVP

0.50

MPC

0.16

ClinPred

0.83

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.48

gMVP

0.30

Mutation Taster

=47/53

disease causing

(source)

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

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19-1226622-G-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over