9-27524841-A-C

Position:

• chr9-27524841-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_020124.3(IFNK):​c.505A>C​(p.Ile169Leu) 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. 13/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: IFNK NM_020124.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.64

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]

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.4165762).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
IFNK	NM_020124.3	c.505A>C	p.Ile169Leu	missense_variant	1/2	ENST00000276943.3	NP_064509.2
MOB3B	NM_024761.5	c.-199+4714T>G		intron_variant		ENST00000262244.6	NP_079037.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
IFNK	ENST00000276943.3	c.505A>C	p.Ile169Leu	missense_variant	1/2	1	NM_020124.3	ENSP00000276943.2
MOB3B	ENST00000262244.6	c.-199+4714T>G		intron_variant		1	NM_024761.5	ENSP00000262244.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 22, 2024

The c.505A>C (p.I169L) alteration is located in exon 1 (coding exon 1) of the IFNK gene. This alteration results from a A to C substitution at nucleotide position 505, causing the isoleucine (I) at amino acid position 169 to be replaced by a leucine (L). 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	-0.19	T
BayesDel_noAF	Benign	-0.51
CADD	Benign	19
DANN	Benign	0.94
DEOGEN2	Benign	0.084	T
Eigen	Benign	-0.37
Eigen_PC	Benign	-0.36
FATHMM_MKL	Benign	0.60	D
LIST_S2	Benign	0.34	T
M_CAP	Benign	0.0067	T
MetaRNN	Benign	0.42	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.1	M
PrimateAI	Uncertain	0.50	T
PROVEAN	Benign	-1.3	N
REVEL	Benign	0.14
Sift	Benign	0.069	T
Sift4G	Uncertain	0.045	D
Polyphen		0.017	B
Vest4		0.32
MutPred		0.78		Loss of MoRF binding (P = 0.098);
MVP		0.49
MPC		0.0078
ClinPred		0.22	T
GERP RS		4.9
Varity_R		0.15
gMVP		0.13

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: chr9-27524839;