Genetic Variant NM_152743.4:c.434C>A (chr7-2543959-G-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM1PM2

The NM_152743.4(BRAT1):c.434C>A(p.Ala145Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A145V) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 31)

Consequence

BRAT1
NM_152743.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.30

Publications

0 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

BRAT1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 3 benign, 10 uncertain in NM_152743.4

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_152743.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
BRAT1	NM_152743.4	MANE Select	c.434C>A	p.Ala145Glu	missense	Exon 5 of 14	NP_689956.2
BRAT1	NM_001350626.2		c.434C>A	p.Ala145Glu	missense	Exon 5 of 14	NP_001337555.1
BRAT1	NR_146879.2		n.493C>A		non_coding_transcript_exon	Exon 5 of 15

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
BRAT1	ENST00000340611.9	TSL:1 MANE Select	c.434C>A	p.Ala145Glu	missense	Exon 5 of 14	ENSP00000339637.4
BRAT1	ENST00000421712.1	TSL:3	n.286C>A		non_coding_transcript_exon	Exon 3 of 5	ENSP00000409209.2
BRAT1	ENST00000467558.5	TSL:5	n.450C>A		non_coding_transcript_exon	Exon 4 of 10

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.41

BayesDel_addAF

Uncertain

0.11

BayesDel_noAF

Benign

-0.090

CADD

Benign

(source)

DANN

Benign

0.88

DEOGEN2

Benign

0.010

Eigen

Benign

-0.19

Eigen_PC

Benign

-0.30

FATHMM_MKL

Uncertain

0.77

LIST_S2

Benign

0.69

M_CAP

Uncertain

0.15

MetaRNN

Uncertain

0.58

MetaSVM

Benign

-0.72

MutationAssessor

Uncertain

2.4

PhyloP100

1.3

PrimateAI

Benign

0.39

PROVEAN

Uncertain

-2.5

REVEL

Uncertain

0.41

Sift

Uncertain

0.021

Sift4G

Benign

0.29

Polyphen

0.88

Vest4

0.59

MutPred

0.44

Gain of solvent accessibility (P = 0.0145)

MVP

0.67

MPC

0.26

ClinPred

0.46

GERP RS

3.3

Varity_R

0.11

gMVP

0.64

Mutation Taster

=90/10

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.19

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over