Genetic Variant KHNYN:p.Arg134Trp (chr14-24431661-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_015299.3(KHNYN):c.400C>T(p.Arg134Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000564 in 1,613,970 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000057 ( 0 hom. )

Consequence

KHNYN
NM_015299.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.967

Variant links:

Genes affected

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]

KHNYN links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.15595648).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KHNYN	NM_015299.3 link	c.400C>T	p.Arg134Trp	missense_variant	Exon 3 of 8	ENST00000553935.6	NP_056114.1	O15037

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
KHNYN	ENST00000553935.6 link	c.400C>T	p.Arg134Trp	missense_variant	Exon 3 of 8	1	NM_015299.3	ENSP00000450799.1	O15037
KHNYN	ENST00000251343.9 link	c.400C>T	p.Arg134Trp	missense_variant	Exon 3 of 8	1		ENSP00000251343.5	O15037
KHNYN	ENST00000556842.5 link	c.400C>T	p.Arg134Trp	missense_variant	Exon 3 of 8	2		ENSP00000451106.1	O15037
KHNYN	ENST00000556510.1 link	c.400C>T	p.Arg134Trp	missense_variant	Exon 2 of 2	2		ENSP00000451004.1	G3V331

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000637

AC:

AN:

251164

Hom.:

AF XY:

0.0000884

AC XY:

AN XY:

135812

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000132

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000568

AC:

AN:

1461766

Hom.:

Cov.:

AF XY:

0.0000536

AC XY:

AN XY:

727186

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000894

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000701

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152204

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74354

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000116

Hom.:

Bravo

AF:

0.0000416

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000741

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.000237

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 09, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.400C>T (p.R134W) alteration is located in exon 3 (coding exon 2) of the KHNYN gene. This alteration results from a C to T substitution at nucleotide position 400, causing the arginine (R) at amino acid position 134 to be replaced by a tryptophan (W). 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

0.20

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.38

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.017

T;T;T;.

Eigen

Benign

-0.41

Eigen_PC

Benign

-0.30

FATHMM_MKL

Uncertain

0.83

LIST_S2

Benign

0.73

.;.;T;D

M_CAP

Benign

0.014

MetaRNN

Benign

0.13

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.2

M;M;M;.

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-0.10

N;N;N;N

REVEL

Benign

0.14

Sift

Benign

0.19

T;T;T;D

Sift4G

Uncertain

0.060

T;T;T;D

Polyphen

0.0030

B;B;B;.

Vest4

0.52

MVP

0.64

MPC

0.77

ClinPred

0.13

GERP RS

2.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.078

gMVP

0.59

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over