14-24440195-C-A

Variant names:

• chr14-24440195-C-A
• rs759354151
• NM_020195.3:c.770G>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_020195.3(SDR39U1):​c.770G>T​(p.Arg257Leu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R257C) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 35)
• Consequence: SDR39U1 NM_020195.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.01
• Publications: 0 publications found

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

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020195.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SDR39U1	NM_020195.3	MANE Select	c.770G>T	p.Arg257Leu	missense	Exon 6 of 6	NP_064580.2	Q9NRG7-2
	KHNYN	NM_015299.3	MANE Select	c.*2910C>A		3_prime_UTR	Exon 8 of 8	NP_056114.1	O15037
	SDR39U1	NM_001387322.1		c.839G>T	p.Arg280Leu	missense	Exon 6 of 6	NP_001374251.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SDR39U1	ENST00000399395.8	TSL:1 MANE Select	c.770G>T	p.Arg257Leu	missense	Exon 6 of 6	ENSP00000382327.3	Q9NRG7-2
	SDR39U1	ENST00000554698.5	TSL:1	c.446G>T	p.Arg149Leu	missense	Exon 4 of 4	ENSP00000452438.1	Q86TZ5
	KHNYN	ENST00000553935.6	TSL:1 MANE Select	c.*2910C>A		3_prime_UTR	Exon 8 of 8	ENSP00000450799.1	O15037

Frequencies

GnomAD3 genomes Cov.: 35

GnomAD4 exome Cov.: 69

GnomAD4 genome Cov.: 35

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.65
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Uncertain	0.080
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.082	T
Eigen	Uncertain	0.34
Eigen_PC	Uncertain	0.42
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.92	D
M_CAP	Benign	0.057	D
MetaRNN	Uncertain	0.56	D
MetaSVM	Benign	-0.82	T
PhyloP100		7.0
PrimateAI	Uncertain	0.53	T
PROVEAN	Pathogenic	-6.8	D
REVEL	Uncertain	0.33
Sift	Benign	0.040	D
Sift4G	Benign	0.19	T
Polyphen		1.0	D
Vest4		0.93
MVP		0.33
MPC		0.37
ClinPred		1.0	D
GERP RS		4.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
gMVP		0.83
Mutation Taster		=35/65	disease causing

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

Other links and lift over

dbSNP: rs759354151; hg19: chr14-24909401;