NM_000455.5(STK11):c.1254C>G (p.Cys418Trp) AND Peutz-Jeghers syndrome

Germline classification:: Uncertain significance (6 submissions)
Last evaluated:: Jan 27, 2024
Review status:: 2 stars out of maximum of 4 stars
criteria provided, multiple submitters, no conflicts

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV000123057.18

Allele description [Variation Report for NM_000455.5(STK11):c.1254C>G (p.Cys418Trp)]

NM_000455.5(STK11):c.1254C>G (p.Cys418Trp)

Gene:

STK11:serine/threonine kinase 11 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

19p13.3

Genomic location:

Preferred name:

NM_000455.5(STK11):c.1254C>G (p.Cys418Trp)

Other names:

p.C418W:TGC>TGG; p.Cys418Trp

HGVS:

NC_000019.10:g.1226599C>G
NG_007460.2:g.42193C>G
NM_000455.5:c.1254C>GMANE SELECT
NP_000446.1:p.Cys418Trp
NP_000446.1:p.Cys418Trp
LRG_319t1:c.1254C>G
LRG_319:g.42193C>G
LRG_319p1:p.Cys418Trp
NC_000019.9:g.1226598C>G
NM_000455.4:c.1254C>G
p.C418W

Protein change:

C418W

Links:

dbSNP: rs587780715

NCBI 1000 Genomes Browser:

rs587780715

Molecular consequence:

NM_000455.5:c.1254C>G - missense variant - [Sequence Ontology: SO:0001583]

Observations:

Condition(s)

Name:: Peutz-Jeghers syndrome (PJS)
Synonyms:: Polyposis, hamartomatous intestinal; Polyps-and-spots syndrome; Peutz-Jeghers polyposis; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0008280; MeSH: D010580; MedGen: C0031269; Orphanet: 2869; OMIM: 175200

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Gamma proteobacterium LM2005 16S ribosomal RNA gene, partial sequence
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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000166352	Invitae	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Jan 27, 2024)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV000487848	Counsyl	criteria provided, single submitter (Counsyl Autosomal Dominant Disease Classification criteria (2015))	Uncertain significance (Nov 21, 2015)	unknown	clinical testing	Counsyl Autosomal Dominant Disease Classification criteria (2015), Citation Link,
SCV000503556	CSER _CC_NCGL, University of Washington - CSER - NEXT Medicine variant annotation	no assertion criteria provided	Uncertain significance (Aug 1, 2016)	germline	research
SCV002057996	Genome-Nilou Lab	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Jul 15, 2021)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV004018018	Myriad Genetics, Inc.	criteria provided, single submitter (Myriad Autosomal Dominant, Autosomal Recessive and X-Linked Classification Criteria (2023))	Uncertain significance (Apr 14, 2023)	unknown	clinical testing	Citation Link,
SCV004819024	All of Us Research Program, National Institutes of Health	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain Significance (Jan 11, 2024)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

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Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	no	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	germline	unknown	11	not provided	not provided	108544	not provided	clinical testing, research
not provided	unknown	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee..

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]

PMID:: 25741868
PMCID:: PMC4544753

Details of each submission

From Invitae, SCV000166352.12

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

This sequence change replaces cysteine, which is neutral and slightly polar, with tryptophan, which is neutral and slightly polar, at codon 418 of the STK11 protein (p.Cys418Trp). This variant is present in population databases (rs587780715, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with STK11-related conditions. ClinVar contains an entry for this variant (Variation ID: 135918). 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 with a negative predictive value of 95%. RNA analysis performed to evaluate the impact of this missense change on mRNA splicing indicates it does not significantly alter splicing (Invitae). 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.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Counsyl, SCV000487848.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	unknown	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From CSER _CC_NCGL, University of Washington - CSER - NEXT Medicine variant annotation, SCV000503556.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	research	not provided

Description

Found in patient having exome sequencing due to suspicion for hereditary colon cancer and/or polyps. Patient is a 47 year old with a history of colon cancer diagnosed at 47 and a family history of colon cancer.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Genome-Nilou Lab, SCV002057996.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	no	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Myriad Genetics, Inc., SCV004018018.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

Description

This variant is classified as a variant of uncertain significance as there is insufficient evidence to determine its impact on protein function and/or cancer risk.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	unknown	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From All of Us Research Program, National Institutes of Health, SCV004819024.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	11	not provided	not provided	clinical testing	PubMed (1)

Description

This missense variant replaces cysteine with tryptophan at codon 418 of the STK11 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with hereditary cancer in the literature. This variant has been identified in 6/195444 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	108544	not provided	not provided		11	not provided	not provided	not provided

Last Updated: May 7, 2024

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