1-62247498-CT-C

Position:

• chr1-62247498-CT-C

Variant summary

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

The NM_181712.5(KANK4):​c.2856delA​(p.Ala953fs) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 30)
• Consequence: KANK4 NM_181712.5 frameshift
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -3.75

Genes affected

KANK4 (HGNC:27263): (KN motif and ankyrin repeat domains 4) Predicted to be involved in negative regulation of actin filament polymerization. Located in cytosol and microtubule cytoskeleton. [provided by Alliance of Genome Resources, Apr 2022]

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/exons	MANE	Protein	UniProt
KANK4	NM_181712.5	c.2856delA	p.Ala953fs	frameshift_variant	9/10	ENST00000371153.9	NP_859063.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KANK4	ENST00000371153.9	c.2856delA	p.Ala953fs	frameshift_variant	9/10	1	NM_181712.5	ENSP00000360195.4
KANK4	ENST00000354381.3	c.972delA	p.Ala325fs	frameshift_variant	8/9	2		ENSP00000346352.3
KANK4	ENST00000371150.5	c.924delA	p.Ala309fs	frameshift_variant	6/7	2		ENSP00000360192.1
KANK4	ENST00000317477.8	c.270delA	p.Ala91fs	frameshift_variant	3/4	2		ENSP00000321161.4

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 30

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 17, 2024

This sequence change creates a premature translational stop signal (p.Ala953Profs*6) in the KANK4 gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 43 amino acid(s) of the KANK4 protein. This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with KANK4-related conditions. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

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

LitVar

Other links and lift over

dbSNP: rs1671495182; hg19: chr1-62713170;