19-39515733-G-A

Variant names:

• chr19-39515733-G-A
• NM_182704.2:c.521G>A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_182704.2(SELENOV):​c.521G>A​(p.Ser174Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: SELENOV NM_182704.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.0310

Genes affected

SELENOV (HGNC:30399): (selenoprotein V) This gene encodes a selenoprotein containing a selenocysteine (Sec) residue, which is encoded by the UGA codon that normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, the Sec insertion sequence (SECIS) element, which is necessary for the recognition of UGA as a Sec codon rather than as a stop signal. This protein is specifically expressed in the testis. It belongs to the SelWTH family, which possesses a thioredoxin-like fold and a conserved CxxU (C is cysteine, U is Sec) motif, suggesting a redox function for this gene. Alternatively spliced transcript variants have been found for this gene.[provided by RefSeq, Apr 2017]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.05128026).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SELENOV	NM_182704.2	c.521G>A	p.Ser174Asn	missense_variant	Exon 1 of 6	ENST00000335426.9	NP_874363.1
SELENOV	NM_001350809.1	c.521G>A	p.Ser174Asn	missense_variant	Exon 1 of 5		NP_001337738.1
SELENOV	NR_146916.2	n.311G>A		non_coding_transcript_exon_variant	Exon 1 of 4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SELENOV	ENST00000335426.9	c.521G>A	p.Ser174Asn	missense_variant	Exon 1 of 6	1	NM_182704.2	ENSP00000333956.4
SELENOV	ENST00000597876.1	n.288G>A		non_coding_transcript_exon_variant	Exon 1 of 2	3
SELENOV	ENST00000600586.1	n.-83G>A		upstream_gene_variant		3		ENSP00000470671.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Dec 25, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.521G>A (p.S174N) alteration is located in exon 1 (coding exon 1) of the SELV gene. This alteration results from a G to A substitution at nucleotide position 521, causing the serine (S) at amino acid position 174 to be replaced by an asparagine (N). 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
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.69
CADD	Benign	13
DANN	Benign	0.97
DEOGEN2	Benign	0.023	T;.;.
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.041	N
LIST_S2	Benign	0.33	T;T;T
M_CAP	Benign	0.0069	T
MetaRNN	Benign	0.051	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.34	N;.;.
PrimateAI	Benign	0.43	T
PROVEAN	Benign	-1.3	N;N;.
REVEL	Benign	0.017
Sift	Benign	0.38	T;T;.
Sift4G	Benign	0.50	T;T;T
Polyphen		0.068	B;.;.
Vest4		0.13
MutPred		0.17		Loss of phosphorylation at S174 (P = 0.0056);Loss of phosphorylation at S174 (P = 0.0056);Loss of phosphorylation at S174 (P = 0.0056);
MVP		0.040
MPC		0.45
ClinPred		0.054	T
GERP RS		-0.27
Varity_R		0.060

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: chr19-40006373;