12-5043885-GGGC-G

Position:

• chr12-5043885-GGGC-G

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP6_Moderate BS2

The NM_002234.4(KCNA5):​c.-259_-257delGGC variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00416 in 512,482 control chromosomes in the GnomAD database, including 11 homozygotes. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.0036 (1 hom., cov: 33)
  • Exomes 𝑓: 0.0044 (10 hom.)
• Consequence: KCNA5 NM_002234.4 5_prime_UTR
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.269

Genes affected

KCNA5 (HGNC:6224): (potassium voltage-gated channel subfamily A member 5) Potassium channels represent the most complex class of voltage-gated ino channels from both functional and structural standpoints. Their diverse functions include regulating neurotransmitter release, heart rate, insulin secretion, neuronal excitability, epithelial electrolyte transport, smooth muscle contraction, and cell volume. Four sequence-related potassium channel genes - shaker, shaw, shab, and shal - have been identified in Drosophila, and each has been shown to have human homolog(s). This gene encodes a member of the potassium channel, voltage-gated, shaker-related subfamily. This member contains six membrane-spanning domains with a shaker-type repeat in the fourth segment. It belongs to the delayed rectifier class, the function of which could restore the resting membrane potential of beta cells after depolarization and thereby contribute to the regulation of insulin secretion. This gene is intronless, and the gene is clustered with genes KCNA1 and KCNA6 on chromosome 12. Defects in this gene are a cause of familial atrial fibrillation type 7 (ATFB7). [provided by RefSeq, May 2012]

ACMG classification

Verdict is Likely_benign. Variant got -6 ACMG points.

• BP6: Variant 12-5043885-GGGC-G is Benign according to our data. Variant chr12-5043885-GGGC-G is described in ClinVar as [Likely_benign]. Clinvar id is 1179371.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS2: High AC in GnomAd4 at 553 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KCNA5	NM_002234.4	c.-259_-257delGGC		5_prime_UTR_variant	1/1	ENST00000252321.5	NP_002225.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KCNA5	ENST00000252321	c.-259_-257delGGC		5_prime_UTR_variant	1/1		NM_002234.4	ENSP00000252321.3

Frequencies

GnomAD3 genomes AF: 0.00363 AC: 553 AN: 152192 Hom.: 1 Cov.: 33

Gnomad AFR AF: 0.000941

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000916

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.0143

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00507

Gnomad OTH AF: 0.00143

GnomAD4 exome AF: 0.00438 AC: 1578 AN: 360172 Hom.: 10 AF XY: 0.00414 AC XY: 781 AN XY: 188510

Gnomad4 AFR exome AF: 0.000992

Gnomad4 AMR exome AF: 0.00100

Gnomad4 ASJ exome AF: 0.0000888

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000127

Gnomad4 FIN exome AF: 0.0165

Gnomad4 NFE exome AF: 0.00478

Gnomad4 OTH exome AF: 0.00396

GnomAD4 genome AF: 0.00363 AC: 553 AN: 152310 Hom.: 1 Cov.: 33 AF XY: 0.00408 AC XY: 304 AN XY: 74490

Gnomad4 AFR AF: 0.000938

Gnomad4 AMR AF: 0.000915

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.0143

Gnomad4 NFE AF: 0.00507

Gnomad4 OTH AF: 0.00142

Alfa AF: 0.00447 Hom.: 0

Asia WGS AF: 0.000577 AC: 2 AN: 3478

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

GeneDx

Sep 16, 2018

- -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs1229222159; hg19: chr12-5153051;