rs754439480

Variant names:

• chr14-62950200-T-A
• rs754439480
• NM_139318.5:c.1302A>T

Your query was ambiguous. Multiple possible variants found:

• chr14-62950200-T-A
• chr14-62950200-T-G

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_139318.5(KCNH5):​c.1302A>T​(p.Gly434Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,730 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: not found (cov: 31)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: KCNH5 NM_139318.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.48

Genes affected

KCNH5 (HGNC:6254): (potassium voltage-gated channel subfamily H member 5) This gene encodes a member of voltage-gated potassium channels. Members of this family have diverse functions, including regulating neurotransmitter and hormone release, cardiac function, and cell volume. This protein is an outward-rectifying, noninactivating channel. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.34).
• BP7: Synonymous conserved (PhyloP=1.48 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KCNH5	NM_139318.5	c.1302A>T	p.Gly434Gly	synonymous_variant	Exon 7 of 11	ENST00000322893.12	NP_647479.2
KCNH5	NM_172375.3	c.1302A>T	p.Gly434Gly	synonymous_variant	Exon 7 of 10		NP_758963.1
KCNH5	XM_047431275.1	c.1302A>T	p.Gly434Gly	synonymous_variant	Exon 7 of 10		XP_047287231.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KCNH5	ENST00000322893.12	c.1302A>T	p.Gly434Gly	synonymous_variant	Exon 7 of 11	1	NM_139318.5	ENSP00000321427.7
KCNH5	ENST00000420622.6	c.1302A>T	p.Gly434Gly	synonymous_variant	Exon 7 of 10	1		ENSP00000395439.2
KCNH5	ENST00000394964.3	n.1467A>T		non_coding_transcript_exon_variant	Exon 7 of 7	1
KCNH5	ENST00000394968.2	c.1128A>T	p.Gly376Gly	synonymous_variant	Exon 7 of 11	2		ENSP00000378419.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461730 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727164

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: 0.00000270

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.34
CADD	Benign	9.9
DANN	Benign	0.73

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs754439480; hg19: chr14-63416918;