rs147420365

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 1P and 9B. PP2BP4_StrongBP6BS2

The NM_000393.5(COL5A2):c.4450G>A(p.Gly1484Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000434 in 1,613,974 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G1484D) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00041 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00044 ( 0 hom. )

Consequence

COL5A2
NM_000393.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:9

Conservation

PhyloP100: 0.462

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

PP2

Missense variant where missense usually causes diseases, COL5A2

BP4

Computational evidence support a benign effect (MetaRNN=0.019865185).

BP6

Variant 2-189034120-C-T is Benign according to our data. Variant chr2-189034120-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 213086.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=6, Uncertain_significance=1}. Variant chr2-189034120-C-T is described in Lovd as [Likely_benign].

BS2

High AC in GnomAd at 62 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
COL5A2	NM_000393.5 linkuse as main transcript	c.4450G>A	p.Gly1484Ser	missense_variant	54/54	ENST00000374866.9
COL5A2	XM_011510573.4 linkuse as main transcript	c.4312G>A	p.Gly1438Ser	missense_variant	57/57
COL5A2	XM_047443251.1 linkuse as main transcript	c.4312G>A	p.Gly1438Ser	missense_variant	59/59
COL5A2	XM_047443252.1 linkuse as main transcript	c.4312G>A	p.Gly1438Ser	missense_variant	58/58

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
COL5A2	ENST00000374866.9 linkuse as main transcript	c.4450G>A	p.Gly1484Ser	missense_variant	54/54	1	NM_000393.5	P1
COL5A2	ENST00000618828.1 linkuse as main transcript	c.3289G>A	p.Gly1097Ser	missense_variant	47/47	5

Frequencies

GnomAD3 genomes

AF:

0.000408

AC:

AN:

152130

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000193

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.000377

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000706

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000362

AC:

AN:

251184

Hom.:

AF XY:

0.000309

AC XY:

AN XY:

135750

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.000203

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.000324

Gnomad NFE exome

AF:

0.000608

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000436

AC:

638

AN:

1461726

Hom.:

Cov.:

AF XY:

0.000421

AC XY:

306

AN XY:

727166

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.000157

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000151

Gnomad4 FIN exome

AF:

0.000300

Gnomad4 NFE exome

AF:

0.000523

Gnomad4 OTH exome

AF:

0.000265

GnomAD4 genome

AF:

0.000407

AC:

AN:

152248

Hom.:

Cov.:

AF XY:

0.000430

AC XY:

AN XY:

74442

show subpopulations

Gnomad4 AFR

AF:

0.000193

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.000377

Gnomad4 NFE

AF:

0.000706

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000531

Hom.:

Bravo

AF:

0.000397

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000814

AC:

ExAC

AF:

0.000338

AC:

EpiCase

AF:

0.000818

EpiControl

AF:

0.000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:9

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:4

Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, Amsterdam University Medical Center	-	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Nov 29, 2018	A variant of uncertain significance has been identified in the COL5A2 gene. The G1484S variant has not been published as pathogenic or been reported as benign to our knowledge, yet this variant has been identified independently and/or in conjunction with additional variants in other unrelated individuals referred for genetic testing at GeneDx. So far, segregation data is limited or absent for these individuals. The G1484S variant is observed in 80/126,512 (0.06%) alleles from individuals of European (non-Finnish) ancestry in large population cohorts (Lek et al., 2016). Finally, though G1484S is a non-conservative amino acid substitution, in-silico analyses, including protein predictors and evolutionary conservation, support that this variant does not alter protein structure/function. -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Oct 01, 2021	- -
Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Jul 21, 2023

- -

COL5A2-related disorder

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Apr 15, 2022

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Familial thoracic aortic aneurysm and aortic dissection

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 04, 2017

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. -

Ehlers-Danlos syndrome, classic type, 2

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Jul 30, 2021

- -

Ehlers-Danlos syndrome, classic type, 1

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 31, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.059

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.54

Cadd

Benign

Dann

Benign

0.97

DEOGEN2

Benign

0.33

T;T;T

Eigen

Benign

-0.73

Eigen_PC

Benign

-0.62

FATHMM_MKL

Benign

0.16

M_CAP

Benign

0.0061

MetaRNN

Benign

0.020

T;T;T

MetaSVM

Benign

-0.83

MutationAssessor

Benign

1.0

L;.;L

MutationTaster

Benign

0.62

PrimateAI

Benign

0.24

PROVEAN

Uncertain

-2.5

N;.;.

REVEL

Benign

0.087

Sift

Benign

0.14

T;.;.

Sift4G

Benign

0.14

T;T;.

Polyphen

0.0020

B;.;B

Vest4

0.053

MVP

0.31

MPC

0.26

ClinPred

0.029

GERP RS

1.5

Varity_R

0.059

gMVP

0.27

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