NM_000393.5:c.3567C>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 0P and 11B. BP4_ModerateBP6BS1BS2

The NM_000393.5(COL5A2):c.3567C>A(p.Asn1189Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000657 in 1,613,964 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N1189T) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000068 ( 0 hom. )

Consequence

COL5A2
NM_000393.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:2

Conservation

PhyloP100: 0.685

Publications

0 publications found

Variant links:

Genes affected

COL5A2 (HGNC:2210): (collagen type V alpha 2 chain) This gene encodes an alpha chain for one of the low abundance fibrillar collagens. Fibrillar collagen molecules are trimers that can be composed of one or more types of alpha chains. Type V collagen is found in tissues containing type I collagen and appears to regulate the assembly of heterotypic fibers composed of both type I and type V collagen. This gene product is closely related to type XI collagen and it is possible that the collagen chains of types V and XI constitute a single collagen type with tissue-specific chain combinations. Mutations in this gene are associated with Ehlers-Danlos syndrome, types I and II. [provided by RefSeq, Jul 2008]

COL5A2 Gene-Disease associations (from GenCC):

Ehlers-Danlos syndrome
Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
Ehlers-Danlos syndrome, classic type
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
Ehlers-Danlos syndrome, classic type, 2
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp

COL5A2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -11 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.15700558).

BP6

Variant 2-189041652-G-T is Benign according to our data. Variant chr2-189041652-G-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 561292.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.0000394 (6/152180) while in subpopulation NFE AF = 0.0000735 (5/68036). AF 95% confidence interval is 0.0000285. There are 0 homozygotes in GnomAd4. There are 4 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High AC in GnomAd4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COL5A2	NM_000393.5 link	c.3567C>A	p.Asn1189Lys	missense_variant	Exon 50 of 54	ENST00000374866.9	NP_000384.2	P05997
COL5A2	XM_011510573.4 link	c.3429C>A	p.Asn1143Lys	missense_variant	Exon 53 of 57		XP_011508875.1
COL5A2	XM_047443251.1 link	c.3429C>A	p.Asn1143Lys	missense_variant	Exon 55 of 59		XP_047299207.1
COL5A2	XM_047443252.1 link	c.3429C>A	p.Asn1143Lys	missense_variant	Exon 54 of 58		XP_047299208.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
COL5A2	ENST00000374866.9 link	c.3567C>A	p.Asn1189Lys	missense_variant	Exon 50 of 54	1	NM_000393.5	ENSP00000364000.3		P05997
COL5A2	ENST00000618828.1 link	c.2406C>A	p.Asn802Lys	missense_variant	Exon 43 of 47	5		ENSP00000482184.1		A0A087WYX9

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152180

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000278

AC:

AN:

251414

AF XY:

0.0000368

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000528

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000684

AC:

100

AN:

1461784

Hom.:

Cov.:

AF XY:

0.0000605

AC XY:

AN XY:

727198

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000800

AC:

AN:

1111932

Other (OTH)

AF:

0.000166

AC:

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.427

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:

0.0000394

AC:

AN:

152180

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74338

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41436

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.00

AC:

AN:

5200

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68036

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

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:

0.000142

Hom.:

Bravo

AF:

0.0000340

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

COL5A2-related disorder

Uncertain:1

Jun 12, 2024

PreventionGenetics, part of Exact Sciences

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

The COL5A2 c.3567C>A variant is predicted to result in the amino acid substitution p.Asn1189Lys. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.0062% of alleles in individuals of African descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Familial thoracic aortic aneurysm and aortic dissection

Uncertain:1

Jan 31, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.N1189K variant (also known as c.3567C>A), located in coding exon 50 of the COL5A2 gene, results from a C to A substitution at nucleotide position 3567. The asparagine at codon 1189 is replaced by lysine, an amino acid with similar properties. This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Feb 15, 2022

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Has not been previously published as pathogenic or benign to our knowledge; In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function -

Ehlers-Danlos syndrome, classic type, 1

Benign:1

Sep 09, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Connective tissue disorder

Benign:1

Jun 01, 2018

Center for Human Genetics, Inc, Center for Human Genetics, Inc

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.29

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.24

CADD

Benign

(source)

DANN

Benign

0.72

DEOGEN2

Uncertain

0.47

T;T;T

Eigen

Benign

-0.55

Eigen_PC

Benign

-0.35

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.92

.;D;D

M_CAP

Benign

0.053

MetaRNN

Benign

0.16

T;T;T

MetaSVM

Benign

-0.41

MutationAssessor

Benign

-0.27

N;.;N

PhyloP100

0.69

PrimateAI

Uncertain

0.60

PROVEAN

Benign

-0.65

N;.;.

REVEL

Benign

0.26

Sift

Benign

0.38

T;.;.

Sift4G

Benign

0.73

T;T;.

Polyphen

0.42

B;.;B

Vest4

0.35

MutPred

0.55

Gain of methylation at N1189 (P = 0.0073);.;Gain of methylation at N1189 (P = 0.0073);

MVP

0.66

MPC

0.30

ClinPred

0.082

GERP RS

1.9

Varity_R

0.043

gMVP

0.18

Mutation Taster

=94/6

polymorphism

(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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over