rs116623596

chr15-65077943-G-Achr15-65077943-G-C

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BA1

The NM_001101362.3(KBTBD13):c.1128G>A(p.Thr376=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00306 in 1,611,796 control chromosomes in the GnomAD database, including 148 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.017 (75 hom., cov: 34)
  • Exomes 𝑓: 0.0017 (73 hom.)
• Consequence: KBTBD13 NM_001101362.3 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: -4.75

Genes affected

KBTBD13 (HGNC:37227): (kelch repeat and BTB domain containing 13) The gene belongs to a family of genes encoding proteins containing a BTB domain and several kelch repeats. The BTB domain functions as a protein-protein interaction module, which includes an ability to self-associate or to interact with non-BTB domain-containing proteins. The kelch motif typically occurs in groups of five to seven repeats, and has been found in proteins with diverse functions. Known functions of these family members include transcription regulation, ion channel tetramerization and gating, protein ubiquitination or degradation, and cytoskeleton regulation. The exact function of this family member has yet to be determined. [provided by RefSeq, Jun 2010]

ACMG classification

Verdict is Benign. Variant got -21 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.72).
• BP6: Variant 15-65077943-G-A is Benign according to our data. Variant chr15-65077943-G-A is described in ClinVar as [Benign]. Clinvar id is 129305.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-4.75 with no splicing effect.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0561 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KBTBD13	NM_001101362.3	c.1128G>A	p.Thr376=	synonymous_variant	1/1	ENST00000432196.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KBTBD13	ENST00000432196.5	c.1128G>A	p.Thr376=	synonymous_variant	1/1		NM_001101362.3	P1

Frequencies

GnomAD3 genomes AF: 0.0165 AC: 2516 AN: 152228 Hom.: 76 Cov.: 34

Gnomad AFR AF: 0.0582

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00484

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00318

Gnomad NFE AF: 0.000103

Gnomad OTH AF: 0.0100

GnomAD3 exomes AF: 0.00368 AC: 890 AN: 241788 Hom.: 31 AF XY: 0.00303 AC XY: 402 AN XY: 132884

Gnomad AFR exome AF: 0.0545

Gnomad AMR exome AF: 0.00247

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000198

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000138

Gnomad OTH exome AF: 0.00202

GnomAD4 exome AF: 0.00166 AC: 2418 AN: 1459450 Hom.: 73 Cov.: 83 AF XY: 0.00144 AC XY: 1043 AN XY: 726094

Gnomad4 AFR exome AF: 0.0579

Gnomad4 AMR exome AF: 0.00275

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000128

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000854

Gnomad4 OTH exome AF: 0.00398

GnomAD4 genome AF: 0.0165 AC: 2517 AN: 152346 Hom.: 75 Cov.: 34 AF XY: 0.0159 AC XY: 1186 AN XY: 74496

Gnomad4 AFR AF: 0.0581

Gnomad4 AMR AF: 0.00483

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000103

Gnomad4 OTH AF: 0.00992

Alfa AF: 0.00536 Hom.: 11

Bravo AF: 0.0183

Asia WGS AF: 0.00346 AC: 12 AN: 3478

EpiCase AF: 0.000164

EpiControl AF: 0.0000593

ClinVar

Significance: Benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:3

Benign, criteria provided, single submitter	clinical testing	GeneDx	Sep 22, 2016	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Likely benign, no assertion criteria provided	clinical testing	Genetic Services Laboratory, University of Chicago	-	Likely benign based on allele frequency in 1000 Genomes Project or ESP global frequency and its presence in a patient with a rare or unrelated disease phenotype. NOT Sanger confirmed. -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -

Nemaline myopathy 6 Benign:2

Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Benign, criteria provided, single submitter	clinical testing	Invitae	Jan 29, 2024	- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.72
Cadd	Benign	6.0
Dann	Benign	0.87

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.15		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: rs116623596; hg19: chr15-65370281;