4-21302472-G-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_025221.6(KCNIP4):c.62-419763C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0311 in 152,254 control chromosomes in the GnomAD database, including 165 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.031 (165 hom., cov: 32)
• Consequence: KCNIP4 NM_025221.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.152

Genes affected

KCNIP4 (HGNC:30083): (potassium voltage-gated channel interacting protein 4) This gene encodes a member of the family of voltage-gated potassium (Kv) channel-interacting proteins (KCNIPs), which belong to the recoverin branch of the EF-hand superfamily. Members of the KCNIP family are small calcium binding proteins. They all have EF-hand-like domains, and differ from each other in the N-terminus. They are integral subunit components of native Kv4 channel complexes. They may regulate A-type currents, and hence neuronal excitability, in response to changes in intracellular calcium. This protein member also interacts with presenilin. Multiple alternatively spliced transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.85).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.12 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KCNIP4	NM_025221.6	c.62-419763C>A		intron_variant		ENST00000382152.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KCNIP4	ENST00000382152.7	c.62-419763C>A		intron_variant		5	NM_025221.6

Frequencies

GnomAD3 genomes AF: 0.0310 AC: 4711 AN: 152136 Hom.: 164 Cov.: 32

Gnomad AFR AF: 0.0237

Gnomad AMI AF: 0.0274

Gnomad AMR AF: 0.0929

Gnomad ASJ AF: 0.0118

Gnomad EAS AF: 0.0447

Gnomad SAS AF: 0.128

Gnomad FIN AF: 0.0289

Gnomad MID AF: 0.0253

Gnomad NFE AF: 0.0151

Gnomad OTH AF: 0.0239

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0311 AC: 4733 AN: 152254 Hom.: 165 Cov.: 32 AF XY: 0.0336 AC XY: 2500 AN XY: 74442

Gnomad4 AFR AF: 0.0239

Gnomad4 AMR AF: 0.0932

Gnomad4 ASJ AF: 0.0118

Gnomad4 EAS AF: 0.0450

Gnomad4 SAS AF: 0.128

Gnomad4 FIN AF: 0.0289

Gnomad4 NFE AF: 0.0151

Gnomad4 OTH AF: 0.0255

Alfa AF: 0.0258 Hom.: 12

Bravo AF: 0.0340

Asia WGS AF: 0.101 AC: 349 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.85
Cadd	Benign	2.9
Dann	Benign	0.57

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

Other links and lift over

dbSNP: rs10516380; hg19: chr4-21304095;