NM_020195.3:c.772G>A

Variant names:

• chr14-24440193-C-T
• NM_020195.3:c.772G>A

Variant summary

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

The NM_020195.3(SDR39U1):​c.772G>A​(p.Ala258Thr) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 34)
• Consequence: SDR39U1 NM_020195.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.30

Genes affected

SDR39U1 (HGNC:20275): (short chain dehydrogenase/reductase family 39U member 1) This gene encodes a member of the short-chain dehydrogenases/reductases (SDR) superfamily, which includes both classical and extended types. The encoded protein represents an extended type, with similarity to epimerases. Alternatively spliced transcript variants that encode different protein isoforms have been described. [provided by RefSeq, Mar 2014]

KHNYN (HGNC:20166): (KH and NYN domain containing) The protein encoded by this gene contains a ribonuclease NYN domain and belongs to the N4BP1 family. The protein is a cofactor for the zinc finger antiviral protein (ZAP protein) which targets viral RNA for degradation and restricts SARS-CoV-2 infection. [provided by RefSeq, Sep 2021]

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 rank	MANE	Protein	UniProt
SDR39U1	NM_020195.3	c.772G>A	p.Ala258Thr	missense_variant	Exon 6 of 6	ENST00000399395.8	NP_064580.2
KHNYN	NM_015299.3	c.*2908C>T		3_prime_UTR_variant	Exon 8 of 8	ENST00000553935.6	NP_056114.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SDR39U1	ENST00000399395.8	c.772G>A	p.Ala258Thr	missense_variant	Exon 6 of 6	1	NM_020195.3	ENSP00000382327.3
KHNYN	ENST00000553935.6	c.*2908C>T		3_prime_UTR_variant	Exon 8 of 8	1	NM_015299.3	ENSP00000450799.1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 68

GnomAD4 genome Cov.: 34

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Nov 09, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.772G>A (p.A258T) alteration is located in exon 6 (coding exon 6) of the SDR39U1 gene. This alteration results from a G to A substitution at nucleotide position 772, causing the alanine (A) at amino acid position 258 to be replaced by a threonine (T). 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	Benign	0.31
BayesDel_addAF	Uncertain	0.024	T
BayesDel_noAF	Benign	-0.20
CADD	Pathogenic	27
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.070	.;T;T;.;T;T;.
Eigen	Uncertain	0.61
Eigen_PC	Uncertain	0.52
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.90	D;D;D;D;D;D;D
M_CAP	Uncertain	0.096	D
MetaRNN	Uncertain	0.67	D;D;D;D;D;D;D
MetaSVM	Uncertain	-0.27	T
PrimateAI	Uncertain	0.60	T
PROVEAN	Uncertain	-3.3	D;D;D;D;D;D;D
REVEL	Uncertain	0.42
Sift	Uncertain	0.0020	D;D;D;D;D;D;D
Sift4G	Uncertain	0.0040	D;D;D;D;D;.;.
Polyphen		0.99	D;D;D;D;.;.;.
Vest4		0.52
MVP		0.59
MPC		0.34
ClinPred		0.98	D
GERP RS		2.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
gMVP		0.66

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: chr14-24909399;