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NM_000455.5(STK11):c.1045G>A (p.Glu349Lys) AND not provided

Germline classification:
Uncertain significance (2 submissions)
Last evaluated:
Feb 18, 2020
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:
RCV000115592.17

Allele description [Variation Report for NM_000455.5(STK11):c.1045G>A (p.Glu349Lys)]

NM_000455.5(STK11):c.1045G>A (p.Glu349Lys)

Genes:
LOC130062899:ATAC-STARR-seq lymphoblastoid active region 13597 [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.1045G>A (p.Glu349Lys)
Other names:
p.E349K:GAG>AAG
HGVS:
  • NC_000019.10:g.1223109G>A
  • NG_007460.2:g.38703G>A
  • NM_000455.5:c.1045G>AMANE SELECT
  • NP_000446.1:p.Glu349Lys
  • NP_000446.1:p.Glu349Lys
  • LRG_319t1:c.1045G>A
  • LRG_319:g.38703G>A
  • LRG_319p1:p.Glu349Lys
  • NC_000019.9:g.1223108G>A
  • NM_000455.4:c.1045G>A
Protein change:
E349K
Links:
dbSNP: rs553752236
NCBI 1000 Genomes Browser:
rs553752236
Molecular consequence:
  • NM_000455.5:c.1045G>A - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Synonyms:
none provided
Identifiers:
MedGen: C3661900

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV000149501GeneDx
criteria provided, single submitter

(GeneDx Variant Classification (06012015))		Uncertain significance
(Oct 19, 2017) 		germlineclinical testing

Citation Link,

SCV001471800ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories
criteria provided, single submitter

(ARUP Molecular Germline Variant Investigation Process)		Uncertain significance
(Feb 18, 2020) 		germlineclinical testing

Citation Link

Help

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing
not providedgermlineyesnot providednot providednot providednot providednot providedclinical testing

Details of each submission

From GeneDx, SCV000149501.15

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided

Description

This variant is denoted STK11 c.1045G>A at the cDNA level, p.Glu349Lys (E349K) at the protein level, and results in the change of a Glutamic Acid to a Lysine (GAG>AAG). This variant has not, to our knowledge, been published in the literature as a germline variant. However, it has been reported as a somatic variant in an individual with medullary thyroid cancer and in an individual with cervical cancer (Ji 2015, Lou 2015). STK11 Glu349Lys was observed at an allele frequency of 0.041% (3/7388) in individuals of East Asian ancestry in large population cohorts (NHLBI Exome Sequencing Project, The 1000 Genomes Consortium 2015, Lek 2016). Since Glutamic Acid and Lysine differ in polarity, charge, size or other properties, this is considered a non-conservative amino acid substitution. STK11 Glu349Lys occurs at a position that is not conserved and is not located in a known functional domain. In silico analyses are inconsistent regarding the effect this variant may have on protein structure and function. Based on currently available information, it is unclear whether STK11 Glu349Lys is pathogenic or benign. We consider it to be a variant of uncertain significance.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot providednot providednot providednot providednot provided

From ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories, SCV001471800.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided

Description

The STK11 c.1045G>A; p.Glu349Lys variant (rs553752236) has been reported in an individual with breast cancer but also in a healthy control (Momozawa 2018). This variant is reported in the ClinVar database (Variation ID: 127697). It is found in the general population with an overall allele frequency of 0.005% (13/275920 alleles, including 1 homozygote) in the Genome Aggregation Database. The glutamate at codon 349 is moderately conserved, but computational analyses (SIFT, PolyPhen-2) predict that this variant is tolerated. Due to limited information, the clinical significance of this variant is uncertain at this time. REFERENCES Momozawa Y et al. Germline pathogenic variants of 11 breast cancer genes in 7,051 Japanese patients and 11,241 controls. Nat Commun. 2018 Oct 4;9(1):4083.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Nov 3, 2024