rs558291810

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_001101362.3(KBTBD13):​c.815T>A​(p.Ile272Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000905 in 1,590,312 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I272S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00052 ( 0 hom., cov: 34)
Exomes 𝑓: 0.000045 ( 1 hom. )

Consequence

KBTBD13
NM_001101362.3 missense

Scores

2
9
8

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 7.80

Publications

0 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.081732064).
BP6
Variant 15-65077630-T-A is Benign according to our data. Variant chr15-65077630-T-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 464362.
BS2
High AC in GnomAd4 at 79 AD,Unknown gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
KBTBD13NM_001101362.3 linkc.815T>A p.Ile272Asn missense_variant Exon 1 of 1 ENST00000432196.5 NP_001094832.1 C9JR72

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
KBTBD13ENST00000432196.5 linkc.815T>A p.Ile272Asn missense_variant Exon 1 of 1 6 NM_001101362.3 ENSP00000388723.2 C9JR72

Frequencies

GnomAD3 genomes
AF:
0.000513
AC:
78
AN:
151996
Hom.:
0
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.00188
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.000117
AC:
24
AN:
205834
AF XY:
0.0000608
show subpopulations
Gnomad AFR exome
AF:
0.00208
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000452
AC:
65
AN:
1438198
Hom.:
1
Cov.:
83
AF XY:
0.0000350
AC XY:
25
AN XY:
715118
show subpopulations
African (AFR)
AF:
0.00185
AC:
61
AN:
33044
American (AMR)
AF:
0.00
AC:
0
AN:
43544
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25890
East Asian (EAS)
AF:
0.00
AC:
0
AN:
38850
South Asian (SAS)
AF:
0.00
AC:
0
AN:
84624
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
40136
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5722
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1106702
Other (OTH)
AF:
0.0000670
AC:
4
AN:
59686
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.474
Heterozygous variant carriers
0
3
7
10
14
17
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
4
8
12
16
20
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.000519
AC:
79
AN:
152114
Hom.:
0
Cov.:
34
AF XY:
0.000484
AC XY:
36
AN XY:
74384
show subpopulations
African (AFR)
AF:
0.00190
AC:
79
AN:
41520
American (AMR)
AF:
0.00
AC:
0
AN:
15290
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5124
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4828
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10622
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
292
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
67944
Other (OTH)
AF:
0.00
AC:
0
AN:
2116
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.488
Heterozygous variant carriers
0
4
8
13
17
21
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.000142
Hom.:
0
Bravo
AF:
0.000586
ExAC
AF:
0.0000854
AC:
10

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:2
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Inborn genetic diseases Uncertain:1
Sep 27, 2021
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The c.815T>A (p.I272N) alteration is located in exon 1 (coding exon 1) of the KBTBD13 gene. This alteration results from a T to A substitution at nucleotide position 815, causing the isoleucine (I) at amino acid position 272 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

KBTBD13-related disorder Benign:1
Dec 19, 2023
PreventionGenetics, part of Exact Sciences
Significance:Likely benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Nemaline myopathy 6 Benign:1
Dec 20, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.36
BayesDel_addAF
Benign
-0.34
T
BayesDel_noAF
Benign
-0.27
CADD
Uncertain
24
DANN
Benign
0.97
DEOGEN2
Uncertain
0.55
D
Eigen
Uncertain
0.20
Eigen_PC
Uncertain
0.24
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Benign
0.72
T
M_CAP
Pathogenic
0.74
D
MetaRNN
Benign
0.082
T
MetaSVM
Benign
-0.38
T
MutationAssessor
Benign
1.7
L
PhyloP100
7.8
PrimateAI
Uncertain
0.57
T
PROVEAN
Uncertain
-3.9
D
REVEL
Uncertain
0.48
Sift
Uncertain
0.0040
D
Sift4G
Uncertain
0.0050
D
Polyphen
0.53
P
Vest4
0.30
MutPred
0.74
Gain of disorder (P = 0.0326);
MVP
0.63
MPC
1.5
ClinPred
0.18
T
GERP RS
5.3
Varity_R
0.72
gMVP
0.58
Mutation Taster
=63/37
polymorphism

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

Other links and lift over

dbSNP: rs558291810; hg19: chr15-65369968; API