rs776197055

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_020124.3(IFNK):c.335A>G(p.Lys112Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000233 in 1,461,854 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 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)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

IFNK
NM_020124.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.00300

Publications

1 publications found

Variant links:

Genes affected

IFNK (HGNC:21714): (interferon kappa) This gene encodes a member of the type I interferon family. Type I interferons are a group of related glycoproteins that play an important role in host defenses against viral infections. This protein is expressed in keratinocytes and the gene is found on chromosome 9, adjacent to the type I interferon cluster. [provided by RefSeq, Jul 2008]

IFNK links:

MOB3B (HGNC:23825): (MOB kinase activator 3B) The protein encoded by this gene shares similarity with the yeast Mob1 protein. Yeast Mob1 binds Mps1p, a protein kinase essential for spindle pole body duplication and mitotic checkpoint regulation. This gene is located on the opposite strand as the interferon kappa precursor (IFNK) gene. [provided by RefSeq, Jul 2008]

MOB3B links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05989909).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IFNK	NM_020124.3 link	c.335A>G	p.Lys112Arg	missense_variant	Exon 1 of 2	ENST00000276943.3	NP_064509.2	Q9P0W0
MOB3B	NM_024761.5 link	c.-199+4884T>C		intron_variant	Intron 1 of 3	ENST00000262244.6	NP_079037.3	Q86TA1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IFNK	ENST00000276943.3 link	c.335A>G	p.Lys112Arg	missense_variant	Exon 1 of 2	1	NM_020124.3	ENSP00000276943.2		Q9P0W0
MOB3B	ENST00000262244.6 link	c.-199+4884T>C		intron_variant	Intron 1 of 3	1	NM_024761.5	ENSP00000262244.5		Q86TA1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000358

AC:

AN:

251358

AF XY:

0.0000221

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000792

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000233

AC:

AN:

1461854

Hom.:

Cov.:

AF XY:

0.0000220

AC XY:

AN XY:

727224

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000279

AC:

AN:

1111978

Other (OTH)

AF:

0.0000497

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.460

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000468

Hom.:

ExAC

AF:

0.0000494

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 21, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.335A>G (p.K112R) alteration is located in exon 1 (coding exon 1) of the IFNK gene. This alteration results from a A to G substitution at nucleotide position 335, causing the lysine (K) at amino acid position 112 to be replaced by an arginine (R). 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

0.082

BayesDel_addAF

Benign

-0.53

BayesDel_noAF

Benign

-0.80

CADD

Benign

0.40

(source)

DANN

Benign

0.86

DEOGEN2

Benign

0.030

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.033

LIST_S2

Benign

0.31

M_CAP

Benign

0.0046

MetaRNN

Benign

0.060

MetaSVM

Benign

-0.99

MutationAssessor

Benign

0.45

PhyloP100

0.0030

PrimateAI

Benign

0.22

PROVEAN

Benign

-0.72

REVEL

Benign

0.015

Sift

Benign

0.22

Sift4G

Benign

0.51

Polyphen

0.0040

Vest4

0.030

MutPred

0.39

Loss of methylation at K112 (P = 0.0045);

MVP

0.22

MPC

0.0073

ClinPred

0.046

GERP RS

-4.5

PromoterAI

-0.016

Neutral

(source)

Varity_R

0.070

gMVP

0.048

Mutation Taster

=99/1

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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rs776197055

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over