1-204134577-G-C

Position:

• chr1-204134577-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_018208.4(ETNK2):​c.1026C>G​(p.Phe342Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ETNK2 NM_018208.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.94

Genes affected

ETNK2 (HGNC:25575): (ethanolamine kinase 2) The protein encoded by this gene is a member of choline/ethanolamine kinase family which catalyzes the first step of phosphatidylethanolamine (PtdEtn) biosynthesis via the cytidine diphosphate (CDP) ethanolamine pathway. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2014]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ETNK2	NM_018208.4	c.1026C>G	p.Phe342Leu	missense_variant	7/8	ENST00000367202.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ETNK2	ENST00000367202.9	c.1026C>G	p.Phe342Leu	missense_variant	7/8	1	NM_018208.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 23, 2023

The c.1026C>G (p.F342L) alteration is located in exon 7 (coding exon 7) of the ETNK2 gene. This alteration results from a C to G substitution at nucleotide position 1026, causing the phenylalanine (F) at amino acid position 342 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.76
BayesDel_addAF	Uncertain	0.087	D
BayesDel_noAF	Benign	-0.11
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.31	T;T;T
Eigen	Benign	0.023
Eigen_PC	Benign	0.094
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Uncertain	0.93	D;D;D
M_CAP	Benign	0.0046	T
MetaRNN	Uncertain	0.71	D;D;D
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.3	L;.;.
MutationTaster	Benign	1.0	D;D;D;D;N
PrimateAI	Pathogenic	0.82	D
PROVEAN	Uncertain	-3.8	D;D;D
REVEL	Benign	0.26
Sift	Benign	0.23	T;T;T
Sift4G	Benign	0.35	T;T;.
Polyphen		0.27	B;.;.
Vest4		0.42
MutPred		0.70		Gain of helix (P = 0.0164);.;.;
MVP		0.80
MPC		0.34
ClinPred		0.96	D
GERP RS		2.7
Varity_R		0.16

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-204103705;