Genetic Variant SEC24D:p.Cys1021Trp (chr4-118723551-A-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_014822.4(SEC24D):c.3063T>G(p.Cys1021Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000116 in 1,461,622 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

SEC24D
NM_014822.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.527

Variant links:

Genes affected

SEC24D (HGNC:10706): (SEC24 homolog D, COPII coat complex component) The protein encoded by this gene is a member of the SEC24 subfamily of the SEC23/SEC24 family, which is involved in vesicle trafficking. The encoded protein has similarity to yeast Sec24p component of COPII. COPII is the coat protein complex responsible for vesicle budding from the ER. This gene product is implicated in the shaping of the vesicle, and also in cargo selection and concentration. Mutations in this gene have been associated with Cole-Carpenter syndrome, a disorder affecting bone formation, resulting in craniofacial malformations and bones that break easily. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Dec 2015]

SEC24D links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SEC24D	NM_014822.4 link	c.3063T>G	p.Cys1021Trp	missense_variant	Exon 23 of 23	ENST00000280551.11	NP_055637.2	O94855-1A8K6V0
SEC24D	NM_001318066.2 link	c.3066T>G	p.Cys1022Trp	missense_variant	Exon 23 of 23		NP_001304995.1	O94855-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SEC24D	ENST00000280551.11 link	c.3063T>G	p.Cys1021Trp	missense_variant	Exon 23 of 23	1	NM_014822.4	ENSP00000280551.6	O94855-1
SEC24D	ENST00000511481.5 link	c.1956T>G	p.Cys652Trp	missense_variant	Exon 16 of 16	1		ENSP00000425491.1	E9PDM8
SEC24D	ENST00000502830.1 link	n.392T>G		non_coding_transcript_exon_variant	Exon 2 of 2	2
SEC24D	ENST00000505134.5 link	n.3194T>G		non_coding_transcript_exon_variant	Exon 18 of 18	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000797

AC:

AN:

250928

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135610

show subpopulations

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 SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000882

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000116

AC:

AN:

1461622

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

727088

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000809

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000282

Hom.:

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Oct 10, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3063T>G (p.C1021W) alteration is located in exon 23 (coding exon 22) of the SEC24D gene. This alteration results from a T to G substitution at nucleotide position 3063, causing the cysteine (C) at amino acid position 1021 to be replaced by a tryptophan (W). 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

0.87

BayesDel_addAF

Benign

-0.026

BayesDel_noAF

Benign

-0.17

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.35

T;.

Eigen

Benign

-0.40

Eigen_PC

Benign

-0.68

FATHMM_MKL

Benign

0.17

LIST_S2

Pathogenic

0.97

D;D

M_CAP

Uncertain

0.11

MetaRNN

Uncertain

0.58

D;D

MetaSVM

Benign

-0.61

MutationAssessor

Pathogenic

3.3

M;.

PrimateAI

Uncertain

0.64

PROVEAN

Pathogenic

-9.4

D;D

REVEL

Uncertain

0.40

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;.

Vest4

0.67

MutPred

0.54

Loss of catalytic residue at V1023 (P = 0.0833);.;

MVP

0.37

MPC

0.64

ClinPred

1.0

GERP RS

-6.6

Varity_R

0.96

gMVP

0.66

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over