6-32117916-C-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6_Moderate

The NM_004381.5(ATF6B):c.1367G>A(p.Gly456Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000826 in 1,453,006 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000083 (0 hom.)
• Consequence: ATF6B NM_004381.5 missense
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.0830

Genes affected

ATF6B (HGNC:2349): (activating transcription factor 6 beta) The protein encoded by this gene is a transcription factor in the unfolded protein response (UPR) pathway during ER stress. Either as a homodimer or as a heterodimer with ATF6-alpha, the encoded protein binds to the ER stress response element, interacting with nuclear transcription factor Y to activate UPR target genes. The protein is normally found in the membrane of the endoplasmic reticulum; however, under ER stress, the N-terminal cytoplasmic domain is cleaved from the rest of the protein and translocates to the nucleus. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2008]

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.03172502).
• BP6: Variant 6-32117916-C-T is Benign according to our data. Variant chr6-32117916-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 3130812.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ATF6B	NM_004381.5	c.1367G>A	p.Gly456Glu	missense_variant	12/18	ENST00000375203.8
ATF6B	NM_001136153.2	c.1358G>A	p.Gly453Glu	missense_variant	12/18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ATF6B	ENST00000375203.8	c.1367G>A	p.Gly456Glu	missense_variant	12/18	1	NM_004381.5	A2
ATF6B	ENST00000375201.8	c.1358G>A	p.Gly453Glu	missense_variant	12/18	1		P4
ATF6B	ENST00000453203.2	c.1367G>A	p.Gly456Glu	missense_variant	12/18	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000826 AC: 12 AN: 1453006 Hom.: 0 Cov.: 33 AF XY: 0.00000831 AC XY: 6 AN XY: 722354

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000108

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000314 Hom.: 0

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 03, 2023

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.063
BayesDel_addAF	Benign	-0.28	T
BayesDel_noAF	Benign	-0.65
Cadd	Benign	6.1
Dann	Benign	0.71
DEOGEN2	Benign	0.24	T;.;.
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.021	N
M_CAP	Benign	0.0078	T
MetaRNN	Benign	0.032	T;T;T
MetaSVM	Benign	-0.97	T
MutationAssessor	Benign	1.4	L;.;.
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.28	T
PROVEAN	Benign	0.63	N;N;.
REVEL	Benign	0.10
Sift	Benign	0.67	T;T;.
Sift4G	Benign	1.0	T;T;.
Polyphen		0.0	B;B;.
Vest4		0.049
MutPred		0.13		Loss of glycosylation at S457 (P = 0.1144);.;Loss of glycosylation at S457 (P = 0.1144);
MVP		0.35
MPC		0.60
ClinPred		0.026	T
GERP RS		0.71
Varity_R		0.033
gMVP		0.34

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

LitVar

Other links and lift over

dbSNP: rs1251902044; hg19: chr6-32085693;