19-1221273-G-C

Variant names:

• chr19-1221273-G-C
• rs730881963
• NM_000455.5:c.795G>C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1 PM2

The NM_000455.5(STK11):​c.795G>C​(p.Glu265Asp) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,459,716 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. E265E) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: STK11 NM_000455.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.58

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 4 ACMG points.

• PM1: In a domain Protein kinase (size 260) in uniprot entity STK11_HUMAN there are 19 pathogenic changes around while only 5 benign (79%) in NM_000455.5
• 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	c.795G>C	p.Glu265Asp	missense_variant	Exon 6 of 10	ENST00000326873.12	NP_000446.1
STK11	NM_001407255.1	c.795G>C	p.Glu265Asp	missense_variant	Exon 6 of 9		NP_001394184.1
STK11	NR_176325.1	n.2062G>C		non_coding_transcript_exon_variant	Exon 7 of 11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
STK11	ENST00000326873.12	c.795G>C	p.Glu265Asp	missense_variant	Exon 6 of 10	1	NM_000455.5	ENSP00000324856.6
STK11	ENST00000652231.1	c.795G>C	p.Glu265Asp	missense_variant	Exon 6 of 9			ENSP00000498804.1
STK11	ENST00000585748.3	c.423G>C	p.Glu141Asp	missense_variant	Exon 8 of 12	3		ENSP00000477641.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000406 AC: 1 AN: 246466 Hom.: 0 AF XY: 0.00000745 AC XY: 1 AN XY: 134254

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000558

Gnomad SAS 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: 6.85e-7 AC: 1 AN: 1459716 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 726052

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Peutz-Jeghers syndrome Uncertain:1

May 31, 2021

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. This variant has not been reported in the literature in individuals with STK11-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces glutamic acid with aspartic acid at codon 265 of the STK11 protein (p.Glu265Asp). The glutamic acid residue is highly conserved and there is a small physicochemical difference between glutamic acid and aspartic acid. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.84
BayesDel_addAF	Benign	-0.022	T
BayesDel_noAF	Benign	-0.10
CADD	Uncertain	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.31	T;T
Eigen	Benign	-0.24
Eigen_PC	Benign	-0.11
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Uncertain	0.93	D;D
M_CAP	Benign	0.064	D
MetaRNN	Uncertain	0.66	D;D
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	0.69	.;N
PrimateAI	Pathogenic	0.80	T
PROVEAN	Uncertain	-2.5	.;D
REVEL	Uncertain	0.32
Sift	Benign	0.050	.;D
Sift4G	Benign	0.077	T;T
Polyphen		0.029	.;B
Vest4		0.86
MutPred		0.44		Gain of ubiquitination at K269 (P = 0.0913);Gain of ubiquitination at K269 (P = 0.0913);
MVP		0.96
MPC		1.2
ClinPred		0.61	D
GERP RS		1.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.71
gMVP		0.72

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: rs730881963; hg19: chr19-1221272;