chr13-41131833-G-C

Position:

• chr13-41131833-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_152903.5(KBTBD6):​c.679C>G​(p.Arg227Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,892 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict 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: 33)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: KBTBD6 NM_152903.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.0250

Genes affected

KBTBD6 (HGNC:25340): (kelch repeat and BTB domain containing 6) Involved in proteasome-mediated ubiquitin-dependent protein catabolic process; protein K48-linked ubiquitination; and regulation of Rac protein signal transduction. Located in cytoplasm and nucleus. Part of Cul3-RING ubiquitin ligase complex. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.084118426).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KBTBD6	NM_152903.5	c.679C>G	p.Arg227Gly	missense_variant	1/1	ENST00000379485.2	NP_690867.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KBTBD6	ENST00000379485.2	c.679C>G	p.Arg227Gly	missense_variant	1/1	6	NM_152903.5	ENSP00000368799.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461892 Hom.: 0 Cov.: 36 AF XY: 0.00000138 AC XY: 1 AN XY: 727248

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: 0.00000360

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 09, 2024

The c.679C>G (p.R227G) alteration is located in exon 1 (coding exon 1) of the KBTBD6 gene. This alteration results from a C to G substitution at nucleotide position 679, causing the arginine (R) at amino acid position 227 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.084	T
BayesDel_noAF	Benign	-0.36
CADD	Benign	17
DANN	Benign	0.81
DEOGEN2	Benign	0.14	T
Eigen	Benign	-0.45
Eigen_PC	Benign	-0.33
FATHMM_MKL	Benign	0.73	D
LIST_S2	Benign	0.73	T
M_CAP	Benign	0.022	T
MetaRNN	Benign	0.084	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.38	N
PrimateAI	Benign	0.41	T
PROVEAN	Benign	-1.0	N
REVEL	Benign	0.051
Sift	Benign	0.39	T
Sift4G	Benign	0.62	T
Polyphen		0.0030	B
Vest4		0.21
MutPred		0.57		Loss of stability (P = 0.0812);
MVP		0.26
MPC		1.2
ClinPred		0.095	T
GERP RS		2.8
Varity_R		0.18
gMVP		0.58

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr13-41705969;