chr20-408749-C-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_006462.6(RBCK1):​c.11C>A​(p.Ala4Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000222 in 1,612,376 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 10/15 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00023 ( 1 hom. )

Consequence

RBCK1
NM_006462.6 missense

Scores

2
13

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 1.40
Variant links:
Genes affected
RBCK1 (HGNC:15864): (RANBP2-type and C3HC4-type zinc finger containing 1) Enables several functions, including identical protein binding activity; protein sequestering activity; and ubiquitin binding activity. Involved in several processes, including T cell receptor signaling pathway; cellular protein metabolic process; and regulation of DNA-binding transcription factor activity. Part of LUBAC complex. Implicated in glycogen storage disease. [provided by Alliance of Genome Resources, Apr 2022]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.03694737).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
RBCK1NM_031229.4 linkuse as main transcriptc.-9C>A 5_prime_UTR_variant 1/12 ENST00000356286.10 NP_112506.2

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
RBCK1ENST00000356286 linkuse as main transcriptc.-9C>A 5_prime_UTR_variant 1/121 NM_031229.4 ENSP00000348632.6 Q9BYM8-1

Frequencies

GnomAD3 genomes
AF:
0.000164
AC:
25
AN:
152264
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
Gnomad ASJ
AF:
0.000576
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000309
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000114
AC:
28
AN:
245404
Hom.:
0
AF XY:
0.000105
AC XY:
14
AN XY:
133212
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00131
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000135
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000228
AC:
333
AN:
1460112
Hom.:
1
Cov.:
30
AF XY:
0.000234
AC XY:
170
AN XY:
726208
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00131
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000116
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000262
Gnomad4 OTH exome
AF:
0.000116
GnomAD4 genome
AF:
0.000164
AC:
25
AN:
152264
Hom.:
0
Cov.:
32
AF XY:
0.000134
AC XY:
10
AN XY:
74392
show subpopulations
Gnomad4 AFR
AF:
0.0000241
Gnomad4 AMR
AF:
0.0000654
Gnomad4 ASJ
AF:
0.000576
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000309
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000337
Hom.:
0
Bravo
AF:
0.000181
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000698
AC:
6
ExAC
AF:
0.000148
AC:
18
EpiCase
AF:
0.000218
EpiControl
AF:
0.0000595

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingGeneDxAug 18, 2017The A4D variant in the RBCK1 gene has not been reported previously as a pathogenic variant, nor as a benign variant, to our knowledge. The A4D variant is observed in 15/57972 (0.02%) alleles from individuals of non-Finnish European background, in large population cohorts The A4D variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. This substitution occurs at a position that is not conserved. In silico analysis predicts this variant is probably damaging to the protein structure/function. We interpret A4D as a variant of uncertain significance. -
Polyglucosan body myopathy type 1 Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingFulgent Genetics, Fulgent GeneticsSep 10, 2021- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Benign
-0.53
T
BayesDel_noAF
Benign
-0.75
CADD
Benign
17
DANN
Uncertain
0.99
Eigen
Benign
-0.32
Eigen_PC
Benign
-0.26
FATHMM_MKL
Benign
0.33
N
LIST_S2
Benign
0.35
T;T
M_CAP
Benign
0.024
T
MetaRNN
Benign
0.037
T;T
MetaSVM
Benign
-1.1
T
PROVEAN
Benign
-0.94
N;D
REVEL
Benign
0.057
Sift
Benign
0.25
T;.
Sift4G
Uncertain
0.039
D;.
Polyphen
0.0
B;.
Vest4
0.090
MVP
0.29
ClinPred
0.071
T
GERP RS
2.5
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.020
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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs140276089; hg19: chr20-389393; API