19-1223102-C-T

Position:

chr19-1223102-C-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6BP7BS1BS2

The NM_000455.5(STK11):c.1038C>T(p.Gly346=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000428 in 1,611,152 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

STK11
NM_000455.5 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:10

Conservation

PhyloP100: 1.35

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.57).

BP6

Variant 19-1223102-C-T is Benign according to our data. Variant chr19-1223102-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 184026.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=8, Benign=2, Uncertain_significance=1}.

BP7

Synonymous conserved (PhyloP=1.35 with no splicing effect.

BS1

Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000125 (19/152276) while in subpopulation AMR AF= 0.000914 (14/15310). AF 95% confidence interval is 0.000552. There are 0 homozygotes in gnomad4. There are 10 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High AC in GnomAd4 at 19 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
STK11	NM_000455.5 linkuse as main transcript	c.1038C>T	p.Gly346=	synonymous_variant	8/10	ENST00000326873.12	NP_000446.1
STK11	NM_001407255.1 linkuse as main transcript	c.1038C>T	p.Gly346=	synonymous_variant	8/9		NP_001394184.1
STK11	NR_176325.1 linkuse as main transcript	n.2305C>T		non_coding_transcript_exon_variant	9/11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
STK11	ENST00000326873.12 linkuse as main transcript	c.1038C>T	p.Gly346=	synonymous_variant	8/10	1	NM_000455.5	ENSP00000324856	P1	Q15831-1

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

152158

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000785

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000481

GnomAD3 exomes

AF:

0.0000205

AC:

AN:

243732

Hom.:

AF XY:

0.0000376

AC XY:

AN XY:

132848

show subpopulations

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 SAS exome

AF:

0.0000332

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000907

Gnomad OTH exome

AF:

0.000506

GnomAD4 exome

AF:

0.0000343

AC:

AN:

1458876

Hom.:

Cov.:

AF XY:

0.0000317

AC XY:

AN XY:

725544

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.000359

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000117

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000144

Gnomad4 OTH exome

AF:

0.000265

GnomAD4 genome

AF:

0.000125

AC:

AN:

152276

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74456

show subpopulations

Gnomad4 AFR

AF:

0.0000722

Gnomad4 AMR

AF:

0.000914

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000476

Alfa

AF:

0.000116

Hom.:

Bravo

AF:

0.000321

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000595

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:10

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Peutz-Jeghers syndrome

Benign:4

Benign, criteria provided, single submitter	clinical testing	Myriad Genetics, Inc.	Apr 12, 2023	This variant is considered benign. This variant is a silent/synonymous amino acid change and it is not expected to impact splicing. -
Likely benign, criteria provided, single submitter	clinical testing	Counsyl	Jan 27, 2017	- -
Likely benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Jul 15, 2021	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -

not specified

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Aug 15, 2017	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Likely benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Aug 20, 2024	Variant summary: STK11 c.1038C>T alters a conserved nucleotide resulting in a synonymous change. Several computational tools predict a significant impact on normal splicing: Five predict the variant creates a 5' donor site. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 4.3e-05 in 1611152 control chromosomes (gnomAD database v4). The observed variant frequency is approximately 7 fold of the estimated maximal expected allele frequency for a pathogenic variant in STK11 causing Peutz-Jeghers Syndrome phenotype (6.3e-06). c.1038C>T has been reported in the literature in individuals affected with Breast Cancer (Guindalini_2022) without evidence for causality. These report(s) do not provide unequivocal conclusions about association of the variant with Peutz-Jeghers Syndrome. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication have been ascertained in the context of this evaluation (PMID: 26010451). ClinVar contains an entry for this variant (Variation ID: 184026). Based on the evidence outlined above, the variant was classified as likely benign. -

Hereditary cancer-predisposing syndrome

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Apr 27, 2016	- -
Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Feb 09, 2015	This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Breast and/or ovarian cancer

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Mar 25, 2020

- -

STK11-related disorder

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Dec 05, 2023

The STK11 c.1038C>T variant is not predicted to result in an amino acid change (p.=). Based on available splicing prediction programs (Alamut Visual Plus v1.6.1) this variant is predicted to create a cryptic splice donor site; however, to date this prediction has not been proven by functional studies. This variant has been observed once in a cohort of individuals who underwent genetic counseling for risk assessment of breast, ovarian, and endometrial cancer and reported as benign/likely benign (Table 1, Carvalho et al. 2023. PubMed ID: 36977404). It is observed at an allele frequency of up to ~0.0033% in a large population database and has conflicting interpretations of benign, likely benign and uncertain significance in ClinVar (https://www.ncbi.nlm.nih.gov/clinvar/variation/184026/). Although we suspect that this variant may be benign, at this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Quest Diagnostics Nichols Institute San Juan Capistrano

Oct 28, 2022

- -

Hereditary cancer

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Mendelics

Jan 23, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.57

CADD

Benign

7.8

DANN

Benign

0.71

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over