rs9868324

Positions:

• chr3-124270597-G-A

Variant summary

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

The NM_001388419.1(KALRN):​c.969+1342G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.195 in 151,752 control chromosomes in the GnomAD database, including 2,913 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 0.19 (2913 hom., cov: 32)
• Consequence: KALRN NM_001388419.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.978

Genes affected

KALRN (HGNC:4814): (kalirin RhoGEF kinase) Huntington's disease (HD), a neurodegenerative disorder characterized by loss of striatal neurons, is caused by an expansion of a polyglutamine tract in the HD protein huntingtin. This gene encodes a protein that interacts with the huntingtin-associated protein 1, which is a huntingtin binding protein that may function in vesicle trafficking. [provided by RefSeq, Apr 2016]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.284 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KALRN	NM_001388419.1	c.969+1342G>A		intron_variant		ENST00000682506.1	NP_001375348.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KALRN	ENST00000682506.1	c.969+1342G>A		intron_variant			NM_001388419.1	ENSP00000508359	A2

Frequencies

GnomAD3 genomes AF: 0.195 AC: 29529 AN: 151636 Hom.: 2909 Cov.: 32

Gnomad AFR AF: 0.198

Gnomad AMI AF: 0.0837

Gnomad AMR AF: 0.219

Gnomad ASJ AF: 0.169

Gnomad EAS AF: 0.202

Gnomad SAS AF: 0.296

Gnomad FIN AF: 0.223

Gnomad MID AF: 0.139

Gnomad NFE AF: 0.178

Gnomad OTH AF: 0.199

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

GnomAD4 genome AF: 0.195 AC: 29551 AN: 151752 Hom.: 2913 Cov.: 32 AF XY: 0.199 AC XY: 14753 AN XY: 74158

Gnomad4 AFR AF: 0.198

Gnomad4 AMR AF: 0.219

Gnomad4 ASJ AF: 0.169

Gnomad4 EAS AF: 0.201

Gnomad4 SAS AF: 0.297

Gnomad4 FIN AF: 0.223

Gnomad4 NFE AF: 0.178

Gnomad4 OTH AF: 0.199

Alfa AF: 0.180 Hom.: 303

Bravo AF: 0.192

Asia WGS AF: 0.290 AC: 1008 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	6.0
DANN	Benign	0.20

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs9868324; hg19: chr3-123989444; COSMIC: COSV53757401; COSMIC: COSV53757401;