chr9-740769-CTT-C

Position:

• chr9-740769-CTT-C

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BS1 BS2

The NM_015158.5(KANK1):​c.3554-6_3554-5delTT variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00966 in 1,465,332 control chromosomes in the GnomAD database, with no homozygous occurrence. 1/1 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.00017 (0 hom., cov: 0)
  • Exomes 𝑓: 0.011 (0 hom.)
• Consequence: KANK1 NM_015158.5 splice_region, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.147

Genes affected

KANK1 (HGNC:19309): (KN motif and ankyrin repeat domains 1) The protein encoded by this gene belongs to the Kank family of proteins, which contain multiple ankyrin repeat domains. This family member functions in cytoskeleton formation by regulating actin polymerization. This gene is a candidate tumor suppressor for renal cell carcinoma. Mutations in this gene cause cerebral palsy spastic quadriplegic type 2, a central nervous system development disorder. A t(5;9) translocation results in fusion of the platelet-derived growth factor receptor beta gene (PDGFRB) on chromosome 5 with this gene in a myeloproliferative neoplasm featuring severe thrombocythemia. Alternative splicing of this gene results in multiple transcript variants. A related pseudogene has been identified on chromosome 20. [provided by RefSeq, Dec 2014]

KANK1 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

• BS1: Variant frequency is greater than expected in population amr. gnomad4_exome allele frequency = 0.0107 (14130/1320620) while in subpopulation AMR AF= 0.0297 (960/32294). AF 95% confidence interval is 0.0282. There are 0 homozygotes in gnomad4_exome. There are 7269 alleles in male gnomad4_exome subpopulation. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 24 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KANK1	NM_015158.5	c.3554-6_3554-5delTT		splice_region_variant, intron_variant		ENST00000382297.7	NP_055973.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KANK1	ENST00000382297.7	c.3554-6_3554-5delTT		splice_region_variant, intron_variant		1	NM_015158.5	ENSP00000371734.2

Frequencies

GnomAD3 genomes AF: 0.000166 AC: 24 AN: 144666 Hom.: 0 Cov.: 0

Gnomad AFR AF: 0.000151

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000211

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00121

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000608

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.0107 AC: 14130 AN: 1320620 Hom.: 0 AF XY: 0.0111 AC XY: 7269 AN XY: 656540

Gnomad4 AFR exome AF: 0.00608

Gnomad4 AMR exome AF: 0.0297

Gnomad4 ASJ exome AF: 0.0210

Gnomad4 EAS exome AF: 0.0289

Gnomad4 SAS exome AF: 0.0122

Gnomad4 FIN exome AF: 0.0126

Gnomad4 NFE exome AF: 0.00913

Gnomad4 OTH exome AF: 0.0118

GnomAD4 genome AF: 0.000166 AC: 24 AN: 144712 Hom.: 0 Cov.: 0 AF XY: 0.000200 AC XY: 14 AN XY: 70088

Gnomad4 AFR AF: 0.000151

Gnomad4 AMR AF: 0.000210

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00121

Gnomad4 NFE AF: 0.0000608

Gnomad4 OTH AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

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: rs58169581; hg19: chr9-740769;