19-1221213-C-G

Position:

chr19-1221213-C-G

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_000455.5(STK11):c.735C>G(p.Leu245=) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000124 in 1,612,126 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. L245L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

STK11
NM_000455.5 splice_region, synonymous

Scores

Splicing: ADA: 0.0008692

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts U:1B:9

Conservation

PhyloP100: 1.03

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:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.5).

BP6

Variant 19-1221213-C-G is Benign according to our data. Variant chr19-1221213-C-G is described in ClinVar as [Likely_benign]. Clinvar id is 403792.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=1.03 with no splicing effect.

BS2

High AC in GnomAdExome4 at 16 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
STK11	NM_000455.5 linkuse as main transcript	c.735C>G	p.Leu245=	splice_region_variant, synonymous_variant	6/10	ENST00000326873.12
STK11	NM_001407255.1 linkuse as main transcript	c.735C>G	p.Leu245=	splice_region_variant, synonymous_variant	6/9
STK11	NR_176325.1 linkuse as main transcript	n.2002C>G		splice_region_variant, non_coding_transcript_exon_variant	7/11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
STK11	ENST00000326873.12 linkuse as main transcript	c.735C>G	p.Leu245=	splice_region_variant, synonymous_variant	6/10	1	NM_000455.5	P1	Q15831-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152192

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000578

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000605

AC:

AN:

247732

Hom.:

AF XY:

0.0000371

AC XY:

AN XY:

134904

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000779

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000167

GnomAD4 exome

AF:

0.0000110

AC:

AN:

1459816

Hom.:

Cov.:

AF XY:

0.00000964

AC XY:

AN XY:

726106

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000302

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152310

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74470

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000579

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000473

Bravo

AF:

0.00000756

ClinVar

Significance: Benign/Likely benign

Submissions summary: Uncertain:1Benign:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Peutz-Jeghers syndrome

Uncertain:1Benign:3

Likely benign, criteria provided, single submitter	clinical testing	Invitae	Jan 05, 2024	- -
Uncertain significance, no assertion criteria provided	clinical testing	Department of Pathology and Laboratory Medicine, Sinai Health System	-	The STK11 p.Leu245= variant was not identified in the literature nor was it identified in the Cosmic, LOVD 3.0, Zhejiang University, or Insight Hereditary Tumors database. The variant was identified in the following databases: dbSNP (ID: rs773147894) as "With Uncertain significance allele" and ClinVar (classified as likely benign by Invitae, Ambry Genetics, and Color Genomics). The variant was identified in control databases in 15 of 276326 chromosomes at a frequency of 0.00005 (Genome Aggregation Database Feb 27, 2017). The variant was observed in the following populations: East Asian in 14 of 18858 chromosomes (freq: 0.0007) and Other in 1 of 6434 chromosomes (freq: 0.0002); it was not observed in the African, Latino, European, Ashkenazi Jewish, Finnish, or South Asian populations. The p.Leu245 variant is not expected to have clinical significance because it does not result in a change of amino acid and is not located in a known consensus splice site. However, 4 of 4 in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) predict a greater than 10% difference in splicing. In summary, based on the above information, the clinical significance of this variant cannot be determined with certainty at this time. This variant is classified as a variant of uncertain significance. -
Likely benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Jul 15, 2021	- -
Likely benign, criteria provided, single submitter	clinical testing	All of Us Research Program, National Institutes of Health	Sep 17, 2023	- -

Hereditary cancer-predisposing syndrome

Benign:3

Likely benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Aug 18, 2016	- -
Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Dec 22, 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. -
Likely benign, criteria provided, single submitter	curation	Sema4, Sema4	May 05, 2021	- -

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Oct 07, 2019	- -
Likely benign, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	Dec 06, 2019	- -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

May 07, 2020

Variant summary: STK11 c.735C>G (p.Leu245Leu) alters a non-conserved nucleotide located close to a canonical splice site and therefore could affect mRNA splicing, leading to a significantly altered protein sequence. 4/4 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 6.1e-05 in 247732 control chromosomes, predominantly at a frequency of 0.00078 within the East Asian subpopulation in the gnomAD database. The observed variant frequency within East Asian control individuals in the gnomAD database is approximately 125- fold the estimated maximal expected allele frequency for a pathogenic variant in STK11 causing Peutz-Jeghers Syndrome phenotype (6.3e-06), strongly suggesting that the variant is a benign polymorphism found primarily in populations of East Asian origin. To our knowledge, no occurrence of c.735C>G in individuals affected with Peutz-Jeghers Syndrome and no experimental evidence demonstrating its impact on protein function have been reported. Three clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as likely benign. Based on the evidence outlined above, the variant was classified as benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.50

CADD

Benign

9.6

DANN

Benign

0.78

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

2.6

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00087

dbscSNV1_RF

Benign

0.22

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