chr7-2543273-C-G

Variant names:

• chr7-2543273-C-G
• rs77213198
• NM_152743.4:c.854G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001350626.2(BRAT1):​c.854G>C​(p.Arg285Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/22 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. R285Q) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: BRAT1 NM_001350626.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.94
• Publications: 0 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, 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

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1086027).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001350626.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BRAT1	NM_152743.4	MANE Select	c.854G>C	p.Arg285Pro	missense	Exon 6 of 14	NP_689956.2
	BRAT1	NM_001350626.2		c.854G>C	p.Arg285Pro	missense	Exon 6 of 14	NP_001337555.1
	BRAT1	NM_001350627.2		c.329G>C	p.Arg110Pro	missense	Exon 5 of 13	NP_001337556.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BRAT1	ENST00000340611.9	TSL:1 MANE Select	c.854G>C	p.Arg285Pro	missense	Exon 6 of 14	ENSP00000339637.4
	BRAT1	ENST00000890463.1		c.854G>C	p.Arg285Pro	missense	Exon 6 of 16	ENSP00000560522.1
	BRAT1	ENST00000917322.1		c.851G>C	p.Arg284Pro	missense	Exon 6 of 16	ENSP00000587381.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Neonatal-onset encephalopathy with rigidity and seizures (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.26
BayesDel_addAF	Uncertain	0.018	T
BayesDel_noAF	Benign	-0.21
CADD	Benign	0.18
DANN	Benign	0.69
DEOGEN2	Benign	0.0053	T
Eigen	Benign	-1.7
Eigen_PC	Benign	-1.9
FATHMM_MKL	Benign	0.039	N
LIST_S2	Benign	0.36	T
M_CAP	Uncertain	0.14	D
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-0.49	T
MutationAssessor	Benign	1.5	L
PhyloP100		-1.9
PrimateAI	Benign	0.28	T
PROVEAN	Benign	-1.8	N
REVEL	Uncertain	0.48
Sift	Benign	0.28	T
Sift4G	Benign	0.34	T
Polyphen		0.34	B
Vest4		0.37
MutPred		0.44		Gain of glycosylation at T282 (P = 0.1135)
MVP		0.25
MPC		0.074
ClinPred		0.18	T
GERP RS		-9.1
Varity_R		0.19
gMVP		0.55
Mutation Taster		=90/10	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: rs77213198; hg19: chr7-2582907;