Genetic Variant KBTBD13:p.Val121Leu (chr15-65077176-G-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001101362.3(KBTBD13):c.361G>T(p.Val121Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V121M) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

KBTBD13
NM_001101362.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.43

Publications

6 publications found

Variant links:

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]

KBTBD13 Gene-Disease associations (from GenCC):

nemaline myopathy 6
Inheritance: AD, Unknown Classification: DEFINITIVE, STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen, G2P
childhood-onset nemaline myopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

KBTBD13 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.09874958).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KBTBD13	NM_001101362.3 link	c.361G>T	p.Val121Leu	missense_variant	Exon 1 of 1	ENST00000432196.5	NP_001094832.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KBTBD13	ENST00000432196.5 link	c.361G>T	p.Val121Leu	missense_variant	Exon 1 of 1	6	NM_001101362.3	ENSP00000388723.2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1352252

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

666236

African (AFR)

AF:

0.00

AC:

AN:

28040

American (AMR)

AF:

0.00

AC:

AN:

32204

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24026

East Asian (EAS)

AF:

0.00

AC:

AN:

33090

South Asian (SAS)

AF:

0.00

AC:

AN:

76022

European-Finnish (FIN)

AF:

0.00

AC:

AN:

33578

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5454

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1063638

Other (OTH)

AF:

0.00

AC:

AN:

56200

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.43

CADD

Benign

(source)

DANN

Benign

0.72

DEOGEN2

Benign

0.0058

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.72

LIST_S2

Benign

0.74

M_CAP

Uncertain

0.26

MetaRNN

Benign

0.099

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.20

PhyloP100

2.4

PrimateAI

Uncertain

0.68

PROVEAN

Benign

1.1

REVEL

Benign

0.18

Sift

Benign

1.0

Sift4G

Benign

1.0

Vest4

0.11

ClinPred

0.037

GERP RS

1.2

PromoterAI

-0.044

Neutral

(source)

Varity_R

0.058

gMVP

0.50

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over