20-18510875-C-T

Variant names:

Variant summary

Our verdict is Likely pathogenic. The variant received 9 ACMG points: 9P and 0B. PP3PP5_Very_Strong

The NM_006363.6(SEC23B):c.40C>T(p.Arg14Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000124 in 1,613,968 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00012 ( 0 hom. )

Consequence

SEC23B
NM_006363.6 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:16

Conservation

PhyloP100: 2.06

Publications

25 publications found

Variant links:

Genes affected

SEC23B (HGNC:10702): (SEC23 homolog B, COPII coat complex component) The protein encoded by this gene is a member of the SEC23 subfamily of the SEC23/SEC24 family, which is involved in vesicle trafficking. The encoded protein has similarity to yeast Sec23p component of COPII. COPII is the coat protein complex responsible for vesicle budding from the ER. The function of this gene product has been implicated in cargo selection and concentration. Multiple alternatively spliced transcript variants have been identified in this gene. [provided by RefSeq, Feb 2010]

SEC23B Gene-Disease associations (from GenCC):

congenital dyserythropoietic anemia type 2
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Orphanet, G2P, PanelApp Australia, Laboratory for Molecular Medicine
Cowden disease
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Cowden syndrome 7
Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)
congenital dyserythropoietic anemia
Inheritance: AR Classification: LIMITED Submitted by: Genomics England PanelApp

SEC23B links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 9 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.805

PP5

Variant 20-18510875-C-T is Pathogenic according to our data. Variant chr20-18510875-C-T is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 1223.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006363.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SEC23B	NM_006363.6	MANE Select	c.40C>T	p.Arg14Trp	missense	Exon 2 of 20	NP_006354.2
SEC23B	NM_001172745.3		c.40C>T	p.Arg14Trp	missense	Exon 2 of 20	NP_001166216.1	Q15437
SEC23B	NM_032985.6		c.40C>T	p.Arg14Trp	missense	Exon 2 of 20	NP_116780.1	Q15437

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SEC23B	ENST00000650089.1	MANE Select	c.40C>T	p.Arg14Trp	missense	Exon 2 of 20	ENSP00000497473.1	Q15437
SEC23B	ENST00000336714.8	TSL:1	c.40C>T	p.Arg14Trp	missense	Exon 2 of 20	ENSP00000338844.3	Q15437
SEC23B	ENST00000377465.6	TSL:1	c.40C>T	p.Arg14Trp	missense	Exon 2 of 20	ENSP00000366685.1	Q15437

Frequencies

GnomAD3 genomes

AF:

0.000178

AC:

AN:

152088

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000197

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:

0.000309

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000235

AC:

AN:

251450

AF XY:

0.000228

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.000549

Gnomad ASJ exome

AF:

0.000198

Gnomad EAS exome

AF:

0.000163

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.000237

Gnomad OTH exome

AF:

0.000489

GnomAD4 exome

AF:

0.000118

AC:

173

AN:

1461880

Hom.:

Cov.:

AF XY:

0.000124

AC XY:

AN XY:

727242

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.000559

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000756

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000580

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.000867

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000110

AC:

122

AN:

1111998

Other (OTH)

AF:

0.000199

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000178

AC:

AN:

152088

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74274

show subpopulations

African (AFR)

AF:

0.0000724

AC:

AN:

41408

American (AMR)

AF:

0.000197

AC:

AN:

15264

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10586

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000309

AC:

AN:

68018

Other (OTH)

AF:

0.00

AC:

AN:

2084

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.516

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000264

Hom.:

Bravo

AF:

0.000242

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000165

AC:

EpiCase

AF:

0.000600

EpiControl

AF:

0.000296

ClinVar

ClinVar submissions

Significance:Pathogenic/Likely pathogenic

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (8)

Congenital dyserythropoietic anemia, type II (5)

Congenital dyserythropoietic anemia, type II;C4225179:Cowden syndrome 7 (2)

SEC23B-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.59

BayesDel_addAF

Uncertain

0.080

BayesDel_noAF

Pathogenic

0.22

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.17

Eigen

Uncertain

0.58

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Uncertain

0.94

LIST_S2

Pathogenic

0.99

M_CAP

Uncertain

0.086

MetaRNN

Pathogenic

0.81

MetaSVM

Uncertain

0.63

MutationAssessor

Pathogenic

3.4

PhyloP100

2.1

PrimateAI

Uncertain

0.75

PROVEAN

Pathogenic

-5.4

REVEL

Pathogenic

0.75

Sift

Benign

0.055

Sift4G

Uncertain

0.018

Polyphen

1.0

Vest4

0.72

MVP

0.93

MPC

0.60

ClinPred

0.80

GERP RS

4.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.31

gMVP

0.75

Mutation Taster

=2/98

disease causing (ClinVar)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over