19-50320576-T-A

Position:

• chr19-50320576-T-A

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_Strong BP6_Moderate BS2

The NM_004977.3(KCNC3):​c.2170+17A>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000414 in 1,448,486 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 Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 29)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: KCNC3 NM_004977.3 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -1.08

Genes affected

KCNC3 (HGNC:6235): (potassium voltage-gated channel subfamily C member 3) The Shaker gene family of Drosophila encodes components of voltage-gated potassium channels and is comprised of four subfamilies. Based on sequence similarity, this gene is similar to one of these subfamilies, namely the Shaw subfamily. The protein encoded by this gene belongs to the delayed rectifier class of channel proteins and is an integral membrane protein that mediates the voltage-dependent potassium ion permeability of excitable membranes. Alternate splicing results in several transcript variants. [provided by RefSeq, Mar 2014]

ACMG classification

Verdict is Benign. Variant got -10 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BP6: Variant 19-50320576-T-A is Benign according to our data. Variant chr19-50320576-T-A is described in ClinVar as [Likely_benign]. Clinvar id is 1940472.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS2: High AC in GnomAdExome4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KCNC3	NM_004977.3	c.2170+17A>T		intron_variant		ENST00000477616.2	NP_004968.2
KCNC3	NM_001372305.1	c.1942+17A>T		intron_variant			NP_001359234.1
KCNC3	NR_110912.2	n.260+17A>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KCNC3	ENST00000477616.2	c.2170+17A>T		intron_variant		1	NM_004977.3	ENSP00000434241
KCNC3	ENST00000376959.6	c.2170+17A>T		intron_variant		5		ENSP00000366158	A2
KCNC3	ENST00000474951.1	c.118+17A>T		intron_variant		2		ENSP00000432438
KCNC3	ENST00000670667.1	c.2170+17A>T		intron_variant				ENSP00000499301	P3

Frequencies

GnomAD3 genomes Cov.: 29

GnomAD4 exome AF: 0.00000414 AC: 6 AN: 1448486 Hom.: 0 Cov.: 32 AF XY: 0.00000694 AC XY: 5 AN XY: 720610

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000453

Gnomad4 OTH exome AF: 0.0000168

GnomAD4 genome Cov.: 29

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Apr 12, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	1.3
DANN	Benign	0.65

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: chr19-50823833;