rs373020561

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_152743.4(BRAT1):​c.1012C>T​(p.Pro338Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000647 in 1,546,158 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P338A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000022 ( 0 hom. )

Consequence

BRAT1
NM_152743.4 missense

Scores

19

Clinical Significance

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

Conservation

PhyloP100: -0.189

Publications

2 publications found
Variant links:
Genes affected
BRAT1 (HGNC:21701): (BRCA1 associated ATM activator 1) The protein encoded by this ubiquitously expressed gene interacts with the tumor suppressing BRCA1 (breast cancer 1) protein and and the ATM (ataxia telangiectasia mutated) protein. ATM is thought to be a master controller of cell cycle checkpoint signalling pathways that are required for cellular responses to DNA damage such as double-strand breaks that are induced by ionizing radiation and complexes with BRCA1 in the multi-protein complex BASC (BRAC1-associated genome surveillance complex). The protein encoded by this gene is thought to play a role in the DNA damage pathway regulated by BRCA1 and ATM. [provided by RefSeq, Mar 2012]
BRAT1 Gene-Disease associations (from GenCC):
  • neonatal-onset encephalopathy with rigidity and seizures
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, ClinGen, G2P, Labcorp Genetics (formerly Invitae)
  • neurodevelopmental disorder with cerebellar atrophy and with or without seizures
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen, Ambry Genetics

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.045410186).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
BRAT1NM_152743.4 linkc.1012C>T p.Pro338Ser missense_variant Exon 7 of 14 ENST00000340611.9 NP_689956.2 Q6PJG6-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
BRAT1ENST00000340611.9 linkc.1012C>T p.Pro338Ser missense_variant Exon 7 of 14 1 NM_152743.4 ENSP00000339637.4 Q6PJG6-1

Frequencies

GnomAD3 genomes
AF:
0.0000394
AC:
6
AN:
152106
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.000145
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:
0.0000127
AC:
2
AN:
157716
AF XY:
0.00
show subpopulations
Gnomad AFR exome
AF:
0.000208
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:
0.00000215
AC:
3
AN:
1393934
Hom.:
0
Cov.:
32
AF XY:
0.00000145
AC XY:
1
AN XY:
688062
show subpopulations
African (AFR)
AF:
0.0000317
AC:
1
AN:
31508
American (AMR)
AF:
0.00
AC:
0
AN:
33854
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
23734
East Asian (EAS)
AF:
0.00
AC:
0
AN:
36930
South Asian (SAS)
AF:
0.00
AC:
0
AN:
77868
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
48674
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5376
European-Non Finnish (NFE)
AF:
9.27e-7
AC:
1
AN:
1078536
Other (OTH)
AF:
0.0000174
AC:
1
AN:
57454
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome 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
GnomAD4 genome
AF:
0.0000460
AC:
7
AN:
152224
Hom.:
0
Cov.:
32
AF XY:
0.0000672
AC XY:
5
AN XY:
74418
show subpopulations
African (AFR)
AF:
0.000169
AC:
7
AN:
41540
American (AMR)
AF:
0.00
AC:
0
AN:
15290
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5174
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4824
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10610
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68000
Other (OTH)
AF:
0.00
AC:
0
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.483
Heterozygous variant carriers
0
1
1
2
2
3
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:
0.00
Hom.:
1
Bravo
AF:
0.0000567
ESP6500AA
AF:
0.000460
AC:
2
ESP6500EA
AF:
0.00
AC:
0
ExAC
AF:
0.0000169
AC:
2
Asia WGS
AF:
0.000577
AC:
2
AN:
3478

ClinVar

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

Submissions by phenotype

Neonatal-onset encephalopathy with rigidity and seizures Uncertain:1
Apr 23, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces proline, which is neutral and non-polar, with serine, which is neutral and polar, at codon 338 of the BRAT1 protein (p.Pro338Ser). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with BRAT1-related conditions. ClinVar contains an entry for this variant (Variation ID: 933311). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The serine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not provided Uncertain:1
Apr 14, 2020
GeneDx
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.069
BayesDel_addAF
Benign
-0.26
T
BayesDel_noAF
Benign
-0.39
CADD
Benign
4.3
DANN
Benign
0.58
DEOGEN2
Benign
0.0030
T
Eigen
Benign
-0.99
Eigen_PC
Benign
-1.0
FATHMM_MKL
Benign
0.11
N
LIST_S2
Benign
0.64
T
M_CAP
Benign
0.056
D
MetaRNN
Benign
0.045
T
MetaSVM
Benign
-0.63
T
MutationAssessor
Benign
0.80
N
PhyloP100
-0.19
PrimateAI
Benign
0.30
T
PROVEAN
Benign
-1.2
N
REVEL
Benign
0.065
Sift
Benign
0.32
T
Sift4G
Benign
0.31
T
Polyphen
0.010
B
Vest4
0.12
MVP
0.41
MPC
0.049
ClinPred
0.0076
T
GERP RS
0.017
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1
Varity_R
0.036
gMVP
0.18
Mutation Taster
=99/1
polymorphism

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

Other links and lift over

dbSNP: rs373020561; hg19: chr7-2581757; COSMIC: COSV61397358; COSMIC: COSV61397358; API