rs750400556

Variant names:

• chr7-2538656-C-T
• rs750400556
• NM_152743.4:c.1879G>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_152743.4(BRAT1):​c.1879G>A​(p.Ala627Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000507 in 1,598,218 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. A627V) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000053 (0 hom., cov: 34)
  • Exomes 𝑓: 0.000050 (0 hom.)
• Consequence: BRAT1 NM_152743.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:4
• Conservation: PhyloP100: 0.448
• Publications: 2 publications found

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, ClinGen, Orphanet, Labcorp Genetics (formerly Invitae), G2P
• neurodevelopmental disorder with cerebellar atrophy and with or without seizures

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen, Ambry Genetics

ACMG classification

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=0.036950946).

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BRAT1	NM_152743.4	MANE Select	c.1879G>A	p.Ala627Thr	missense	Exon 14 of 14	NP_689956.2	Q6PJG6-1
	BRAT1	NM_001350626.2		c.2059G>A	p.Ala687Thr	missense	Exon 14 of 14	NP_001337555.1
	BRAT1	NM_001350627.2		c.1354G>A	p.Ala452Thr	missense	Exon 13 of 13	NP_001337556.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BRAT1	ENST00000340611.9	TSL:1 MANE Select	c.1879G>A	p.Ala627Thr	missense	Exon 14 of 14	ENSP00000339637.4	Q6PJG6-1
	BRAT1	ENST00000890463.1		c.2116G>A	p.Ala706Thr	missense	Exon 16 of 16	ENSP00000560522.1
	BRAT1	ENST00000917322.1		c.2113G>A	p.Ala705Thr	missense	Exon 16 of 16	ENSP00000587381.1

Frequencies

GnomAD3 genomes AF: 0.0000526 AC: 8 AN: 152224 Hom.: 0 Cov.: 34

Gnomad AFR AF: 0.00

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: 0.000118

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000439 AC: 10 AN: 227994 AF XY: 0.0000316

Gnomad AFR exome AF: 0.00

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: 0.0000862

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000505 AC: 73 AN: 1445994 Hom.: 0 Cov.: 65 AF XY: 0.0000458 AC XY: 33 AN XY: 719856

African (AFR) AF: 0.0000299 AC: 1 AN: 33470

American (AMR) AF: 0.00 AC: 0 AN: 44692

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26106

East Asian (EAS) AF: 0.00 AC: 0 AN: 39690

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86244

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 38144

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.0000612 AC: 68 AN: 1111644

Other (OTH) AF: 0.0000332 AC: 2 AN: 60240

GnomAD4 genome AF: 0.0000526 AC: 8 AN: 152224 Hom.: 0 Cov.: 34 AF XY: 0.0000672 AC XY: 5 AN XY: 74370

African (AFR) AF: 0.00 AC: 0 AN: 41458

American (AMR) AF: 0.00 AC: 0 AN: 15294

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5182

South Asian (SAS) AF: 0.00 AC: 0 AN: 4838

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10630

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.000118 AC: 8 AN: 68028

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.0000434 Hom.: 0

Bravo AF: 0.0000340

ExAC AF: 0.0000334 AC: 4

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	2	-	not provided (2)
-	1	-	Inborn genetic diseases (1)
-	1	-	Neonatal-onset encephalopathy with rigidity and seizures (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.080
BayesDel_addAF	Benign	-0.38	T
BayesDel_noAF	Benign	-0.60
CADD	Benign	6.2
DANN	Benign	0.39
DEOGEN2	Benign	0.00092	T
Eigen	Benign	-1.0
Eigen_PC	Benign	-1.0
FATHMM_MKL	Benign	0.097	N
LIST_S2	Benign	0.73	T
M_CAP	Benign	0.045	D
MetaRNN	Benign	0.037	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	N
PhyloP100		0.45
PrimateAI	Benign	0.28	T
PROVEAN	Benign	0.29	N
REVEL	Benign	0.016
Sift	Benign	0.51	T
Sift4G	Benign	1.0	T
Polyphen		0.12	B
Vest4		0.071
MutPred		0.25		Gain of loop (P = 0.0079)
MVP		0.19
MPC		0.047
ClinPred		0.030	T
GERP RS		2.5
Varity_R		0.025
gMVP		0.12
Mutation Taster		=97/3	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

Other links and lift over

dbSNP: rs750400556; hg19: chr7-2578290;