rs61729545

Variant names:

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_000093.5(COL5A1):c.1431G>A(p.Ala477Ala) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0106 in 1,613,988 control chromosomes in the GnomAD database, including 1,593 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.057 ( 808 hom., cov: 33)

Exomes 𝑓: 0.0058 ( 785 hom. )

Consequence

COL5A1
NM_000093.5 splice_region, synonymous

Scores

Splicing: ADA: 0.7584

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:11

Conservation

PhyloP100: -2.56

Publications

5 publications found

Variant links:

Genes affected

COL5A1 (HGNC:2209): (collagen type V alpha 1 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. The encoded procollagen protein occurs commonly as the heterotrimer pro-alpha1(V)-pro-alpha1(V)-pro-alpha2(V). Mutations in this gene are associated with Ehlers-Danlos syndrome, types I and II. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2013]

COL5A1 Gene-Disease associations (from GenCC):

Ehlers-Danlos syndrome
Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
Ehlers-Danlos syndrome, classic type
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Orphanet, Ambry Genetics, PanelApp Australia, Genomics England PanelApp
Ehlers-Danlos syndrome, classic type, 1
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
arterial disorder
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

COL5A1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.54).

BP6

Variant 9-134738515-G-A is Benign according to our data. Variant chr9-134738515-G-A is described in ClinVar as Benign. ClinVar VariationId is 136930.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-2.56 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.194 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
COL5A1	NM_000093.5 link	c.1431G>A	p.Ala477Ala	splice_region_variant, synonymous_variant	Exon 10 of 66	ENST00000371817.8	NP_000084.3
COL5A1	NM_001278074.1 link	c.1431G>A	p.Ala477Ala	splice_region_variant, synonymous_variant	Exon 10 of 66		NP_001265003.1
COL5A1	XM_017014266.3 link	c.1431G>A	p.Ala477Ala	splice_region_variant, synonymous_variant	Exon 10 of 65		XP_016869755.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
COL5A1	ENST00000371817.8 link	c.1431G>A	p.Ala477Ala	splice_region_variant, synonymous_variant	Exon 10 of 66	1	NM_000093.5	ENSP00000360882.3
COL5A1	ENST00000371820.4 link	c.1431G>A	p.Ala477Ala	splice_region_variant, synonymous_variant	Exon 10 of 66	2		ENSP00000360885.4

Frequencies

GnomAD3 genomes

AF:

0.0565

AC:

8597

AN:

152152

Hom.:

807

Cov.:

show subpopulations

Gnomad AFR

AF:

0.197

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0213

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000621

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.0127

Gnomad NFE

AF:

0.000559

Gnomad OTH

AF:

0.0292

GnomAD2 exomes

AF:

0.0149

AC:

3743

AN:

251336

AF XY:

0.0109

show subpopulations

Gnomad AFR exome

AF:

0.204

Gnomad AMR exome

AF:

0.00937

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000475

Gnomad OTH exome

AF:

0.00798

GnomAD4 exome

AF:

0.00578

AC:

8447

AN:

1461718

Hom.:

785

Cov.:

AF XY:

0.00499

AC XY:

3630

AN XY:

727176

show subpopulations

African (AFR)

AF:

0.204

AC:

6842

AN:

33476

American (AMR)

AF:

0.0106

AC:

476

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.0000765

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000301

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53264

Middle Eastern (MID)

AF:

0.0104

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000225

AC:

250

AN:

1112000

Other (OTH)

AF:

0.0131

AC:

791

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.474

Heterozygous variant carriers

416

831

1247

1662

2078

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

206

412

618

824

1030

<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:

0.0566

AC:

8617

AN:

152270

Hom.:

808

Cov.:

AF XY:

0.0540

AC XY:

4019

AN XY:

74466

show subpopulations

African (AFR)

AF:

0.197

AC:

8185

AN:

41508

American (AMR)

AF:

0.0213

AC:

326

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.000622

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.0136

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000559

AC:

AN:

68022

Other (OTH)

AF:

0.0289

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

364

728

1092

1456

1820

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

176

264

352

440

<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:

0.0210

Hom.:

639

Bravo

AF:

0.0645

Asia WGS

AF:

0.0100

AC:

AN:

3478

EpiCase

AF:

0.000382

EpiControl

AF:

0.000533

ClinVar

Significance: Benign

Submissions summary: Benign:11

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Mar 21, 2013

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Apr 09, 2025

Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:2

Mar 15, 2017

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

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: The COL5A1 c.1431G>A (p.Ala477Ala) variant involves the alteration of a nucleotide, resulting in a synonymous change. 5/5 splice prediction tools predict weakening the canonical donor site, however no functional studies confirming effect of this variant on splicing have been published at the time of evaluation. This variant was found in 2210/121094 control chromosomes (208 homozygotes) at a frequency of 0.0182503, which is approximately 14600 times the estimated maximal expected allele frequency of a pathogenic COL5A1 variant (0.0000013), suggesting this variant is likely a benign polymorphism. In addition, multiple clinical diagnostic laboratories/reputable databases classified this variant as benign. Taken together, this variant is classified as benign. -

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Ehlers-Danlos syndrome, classic type, 1

Benign:2

Mar 15, 2022

Genome-Nilou Lab

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Fibromuscular dysplasia, multifocal

Benign:1

Mar 15, 2022

Genome-Nilou Lab

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Familial thoracic aortic aneurysm and aortic dissection

Benign:1

Apr 02, 2015

Ambry Genetics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as 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 type 7A

Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Ehlers-Danlos syndrome, classic type

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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 benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.54

CADD

Benign

7.3

(source)

DANN

Benign

0.68

PhyloP100

-2.6

Mutation Taster

=64/36

polymorphism (auto)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.76

dbscSNV1_RF

Benign

0.69

SpliceAI score (max)

0.010

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