rs149877855

Positions:

chr2-189110284-G-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2BP6BS2

The NM_000393.5(COL5A2):c.263C>A(p.Pro88His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000314 in 1,613,962 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00033 ( 0 hom. )

Consequence

COL5A2
NM_000393.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:5

Conservation

PhyloP100: 9.90

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 Likely_benign. Variant got -4 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), COL5A2. . Gene score misZ 2.4395 (greater than the threshold 3.09). Trascript score misZ 3.3523 (greater than threshold 3.09). GenCC has associacion of gene with Ehlers-Danlos syndrome, classic type, 2, Ehlers-Danlos syndrome, classic type.

BP6

Variant 2-189110284-G-T is Benign according to our data. Variant chr2-189110284-G-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 213134.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=5, Uncertain_significance=2}.

BS2

High AC in GnomAd4 at 24 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COL5A2	NM_000393.5 linkuse as main transcript	c.263C>A	p.Pro88His	missense_variant	2/54	ENST00000374866.9	NP_000384.2	P05997
COL5A2	XM_011510573.4 linkuse as main transcript	c.125C>A	p.Pro42His	missense_variant	5/57		XP_011508875.1
COL5A2	XM_047443251.1 linkuse as main transcript	c.125C>A	p.Pro42His	missense_variant	7/59		XP_047299207.1
COL5A2	XM_047443252.1 linkuse as main transcript	c.125C>A	p.Pro42His	missense_variant	6/58		XP_047299208.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
COL5A2	ENST00000374866.9 linkuse as main transcript	c.263C>A	p.Pro88His	missense_variant	2/54	1	NM_000393.5	ENSP00000364000.3	P05997
COL5A2	ENST00000649966.1 linkuse as main transcript	c.125C>A	p.Pro42His	missense_variant	2/11			ENSP00000496785.1	A0A3B3IRH9
COL5A2	ENST00000618828.1 linkuse as main transcript	c.-368C>A		5_prime_UTR_variant	2/47	5		ENSP00000482184.1	A0A087WYX9

Frequencies

GnomAD3 genomes

AF:

0.000158

AC:

AN:

152088

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000323

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000135

AC:

AN:

251272

Hom.:

AF XY:

0.000147

AC XY:

AN XY:

135804

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.000273

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000330

AC:

483

AN:

1461874

Hom.:

Cov.:

AF XY:

0.000322

AC XY:

234

AN XY:

727240

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.0000562

Gnomad4 NFE exome

AF:

0.000424

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.000158

AC:

AN:

152088

Hom.:

Cov.:

AF XY:

0.000162

AC XY:

AN XY:

74286

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000323

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000224

Hom.:

Bravo

AF:

0.000155

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000778

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000465

AC:

ExAC

AF:

0.000123

AC:

EpiCase

AF:

0.000382

EpiControl

AF:

0.000237

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:5

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Nov 01, 2023	COL5A2: PP3, BS2 -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Dec 03, 2024	Not located in the triple helical region, where the majority of pathogenic missense variants occur (PMID: 22696272; HGMD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Identified in a patient with cerebral palsy and a patient with hypermobility, lichen sclerosus, and ileostomy due to severe obstipation (PMID: 33161638, 30467950); This variant is associated with the following publications: (PMID: 30467950, 33161638, 22696272) -

Ehlers-Danlos syndrome type 7A

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

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

Sep 23, 2024

Variant summary: COL5A2 c.263C>A (p.Pro88His) results in a non-conservative amino acid change located in the VWFC domain (IPR001007) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00014 in 251272 control chromosomes, predominantly at a frequency of 0.00027 within the Non-Finnish European subpopulation in the gnomAD database. The observed variant frequency within Non-Finnish European control individuals in the gnomAD database is approximately 43.2 fold of the estimated maximal expected allele frequency for a pathogenic variant in COL5A2 causing Ehlers-Danlos Syndrome phenotype (6.3e-06). To our knowledge, no occurrence of c.263C>A in individuals affected with Ehlers-Danlos Syndrome and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 213134). Based on the evidence outlined above, the variant was classified as likely benign. -

Familial thoracic aortic aneurysm and aortic dissection

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 12, 2024

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

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Ehlers-Danlos syndrome, classic type, 1

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 31, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.071

BayesDel_noAF

Uncertain

-0.030

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.27

T;T;.

Eigen

Pathogenic

0.72

Eigen_PC

Uncertain

0.66

FATHMM_MKL

Benign

0.67

LIST_S2

Benign

0.74

.;T;T

M_CAP

Benign

0.072

MetaRNN

Uncertain

0.72

D;D;D

MetaSVM

Uncertain

0.019

MutationAssessor

Uncertain

2.8

M;M;.

PrimateAI

Uncertain

0.53

PROVEAN

Uncertain

-4.2

D;.;.

REVEL

Uncertain

0.56

Sift

Uncertain

0.0010

D;.;.

Sift4G

Uncertain

0.0030

D;.;.

Polyphen

1.0

D;D;.

Vest4

0.66

MVP

0.60

MPC

1.0

ClinPred

0.77

GERP RS

5.4

Varity_R

0.33

gMVP

0.68

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