9-99230377-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 1P and 6B. PP3BP4_ModerateBS2

The NM_006808.3(SEC61B):c.244G>A(p.Ala82Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000348 in 1,610,542 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000038 ( 0 hom. )

Consequence

SEC61B
NM_006808.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.60

Publications

6 publications found

Variant links:

Genes affected

SEC61B (HGNC:16993): (SEC61 translocon subunit beta) The Sec61 complex is the central component of the protein translocation apparatus of the endoplasmic reticulum (ER) membrane. Oligomers of the Sec61 complex form a transmembrane channel where proteins are translocated across and integrated into the ER membrane. This complex consists of three membrane proteins- alpha, beta, and gamma. This gene encodes the beta-subunit protein. The Sec61 subunits are also observed in the post-ER compartment, suggesting that these proteins can escape the ER and recycle back. There is evidence for multiple polyadenylated sites for this transcript. [provided by RefSeq, Jul 2008]

SEC61B Gene-Disease associations (from GenCC):

polycystic liver disease 1
Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
SEC61B-related polycystic liver disease
Inheritance: AD Classification: LIMITED Submitted by: ClinGen

SEC61B links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

PP3

Multiple lines of computational evidence support a deleterious effect 7: AlphaMissense, BayesDel_noAF, Cadd, Dann, Eigen, phyloP100way_vertebrate, PrimateAI [when BayesDel_addAF, max_spliceai, M_CAP, MetaRNN, MutationTaster was below the threshold]

BP4

Computational evidence support a benign effect (MetaRNN=0.22322845).

BS2

High AC in GnomAdExome4 at 55 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SEC61B	NM_006808.3 link	c.244G>A	p.Ala82Thr	missense_variant	Exon 4 of 4	ENST00000223641.5	NP_006799.1	P60468
SEC61B	XM_047422662.1 link	c.197G>A	p.Arg66His	missense_variant	Exon 3 of 3		XP_047278618.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SEC61B	ENST00000223641.5 link	c.244G>A	p.Ala82Thr	missense_variant	Exon 4 of 4	1	NM_006808.3	ENSP00000223641.4		P60468
SEC61B	ENST00000498603.5 link	c.82G>A	p.Ala28Thr	missense_variant	Exon 4 of 4	3		ENSP00000474122.1		S4R3B5

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151940

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.000172

AC:

AN:

249346

AF XY:

0.000104

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00123

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:

0.0000377

AC:

AN:

1458602

Hom.:

Cov.:

AF XY:

0.0000262

AC XY:

AN XY:

725684

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33320

American (AMR)

AF:

0.00104

AC:

AN:

44406

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26090

East Asian (EAS)

AF:

0.0000253

AC:

AN:

39516

South Asian (SAS)

AF:

0.0000233

AC:

AN:

85884

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53168

Middle Eastern (MID)

AF:

0.000180

AC:

AN:

5548

European-Non Finnish (NFE)

AF:

0.00000360

AC:

AN:

1110434

Other (OTH)

AF:

0.0000166

AC:

AN:

60236

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.402

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151940

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74194

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41342

American (AMR)

AF:

0.0000655

AC:

AN:

15256

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10558

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67986

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000206

Hom.:

Bravo

AF:

0.0000604

ExAC

AF:

0.000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 01, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.244G>A (p.A82T) alteration is located in exon 4 (coding exon 4) of the SEC61B gene. This alteration results from a G to A substitution at nucleotide position 244, causing the alanine (A) at amino acid position 82 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.90

BayesDel_addAF

Benign

-0.010

BayesDel_noAF

Pathogenic

0.17

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.18

T;T

Eigen

Pathogenic

0.85

Eigen_PC

Pathogenic

0.87

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.92

D;D

M_CAP

Benign

0.053

MetaRNN

Benign

0.22

T;T

MetaSVM

Uncertain

-0.0089

PhyloP100

9.6

PrimateAI

Pathogenic

0.85

PROVEAN

Uncertain

-2.9

.;D

REVEL

Uncertain

0.60

Sift

Benign

0.043

.;D

Sift4G

Benign

0.10

T;T

Polyphen

1.0

.;D

Vest4

0.64

MutPred

0.69

.;Gain of sheet (P = 0.0344);

MVP

0.57

MPC

0.54

ClinPred

0.37

GERP RS

5.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.43

gMVP

0.85

Mutation Taster

=29/71

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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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9-99230377-G-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over