9-134731634-C-G

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4BP6BS2

The NM_000093.5(COL5A1):c.1303C>G(p.Pro435Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000104 in 1,613,810 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. P435L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 34)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

COL5A1
NM_000093.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:2O:1

Conservation

PhyloP100: 4.63

Publications

4 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: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.41052788).

BP6

Variant 9-134731634-C-G is Benign according to our data. Variant chr9-134731634-C-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 213021.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=4, Benign=1, other=1, Likely_benign=1}.

BS2

High AC in GnomAd4 at 13 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COL5A1	NM_000093.5 link	c.1303C>G	p.Pro435Ala	missense_variant	Exon 8 of 66	ENST00000371817.8	NP_000084.3	P20908-1A0A024R8E5B2ZZ86Q59EE7
COL5A1	NM_001278074.1 link	c.1303C>G	p.Pro435Ala	missense_variant	Exon 8 of 66		NP_001265003.1	B2ZZ86Q59EE7
COL5A1	XM_017014266.3 link	c.1303C>G	p.Pro435Ala	missense_variant	Exon 8 of 65		XP_016869755.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
COL5A1	ENST00000371817.8 link	c.1303C>G	p.Pro435Ala	missense_variant	Exon 8 of 66	1	NM_000093.5	ENSP00000360882.3	P20908-1
COL5A1	ENST00000371820.4 link	c.1303C>G	p.Pro435Ala	missense_variant	Exon 8 of 66	2		ENSP00000360885.4	P20908-2H7BY82
COL5A1	ENST00000469093.1 link	n.42C>G		non_coding_transcript_exon_variant	Exon 1 of 2	3

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152192

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:

0.0000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000563

AC:

AN:

248628

AF XY:

0.0000520

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000126

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000106

AC:

155

AN:

1461618

Hom.:

Cov.:

AF XY:

0.0000976

AC XY:

AN XY:

727108

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44712

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53250

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.000135

AC:

150

AN:

1111934

Other (OTH)

AF:

0.0000662

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.473

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000854

AC:

AN:

152192

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74346

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41444

American (AMR)

AF:

0.00

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.0000941

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000162

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.460

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000185

Hom.:

Bravo

AF:

0.0000642

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:2Other:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Sep 21, 2023

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The COL5A1 c.1303C>G; p.Pro435Ala variant (rs377488010) is reported in the literature in an individual affected with fibromuscular dysplasia (Georges 2022), and in an individual tested for bleeding, thrombotic, and/or platelet disorders (Downes 2019). This variant is reported in ClinVar (Variation ID: 213021), and is found in the non-Finnish European population with an allele frequency of 0.015% (20/126,666 alleles) in the Genome Aggregation Database. Computational analyses are uncertain whether this variant is neutral or deleterious (REVEL: 0.466). Due to limited information, the clinical significance of this variant is uncertain at this time. References: Downes K et al. Diagnostic high-throughput sequencing of 2396 patients with bleeding, thrombotic, and platelet disorders. Blood. 2019 Dec 5;134(23):2082-2091. PMID: 31064749. Georges A et al. The complex genetic basis of fibromuscular dysplasia, a systemic arteriopathy associated with multiple forms of cardiovascular disease. Clin Sci (Lond). 2022 Aug 31;136(16):1241-1255. PMID: 36043395. -

Apr 16, 2024

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Not located in the triple helical region, where the majority of pathogenic missense variants occur (PMID: 22696272; HGMD); Reported in an individual with a clinical diagnosis of Ehlers-Danlos syndrome, an individual with multifocal fibromuscular dysplasia (mFMD), and an individual who underwent screening for bleeding, thrombotic and/or platelet disorders (PMID: 31064749, 32938213; Dupuis et al., 2012); This variant is associated with the following publications: (PMID: 31064749, 32938213, 22696272) -

Familial thoracic aortic aneurysm and aortic dissection

Uncertain:1

May 02, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.P435A variant (also known as c.1303C>G), located in coding exon 8 of the COL5A1 gene, results from a C to G substitution at nucleotide position 1303. The proline at codon 435 is replaced by alanine, an amino acid with highly similar properties. This alteration has been reported in a fibromuscular dysplasia cohort (Richer J et al. Arterioscler Thromb Vasc Biol, 2020 11;40:2686-2699). This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Abnormal bleeding

Uncertain:1

Feb 01, 2019

NIHR Bioresource Rare Diseases, University of Cambridge

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:research

- -

Ehlers-Danlos syndrome

Benign:1

Jun 06, 2022

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Ehlers-Danlos syndrome, classic type, 1

Benign:1

Dec 24, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Ehlers-Danlos syndrome, classic type

Other:1

GenomeConnect, ClinGen

Significance:not provided

Review Status:no classification provided

Collection Method:phenotyping only

GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.11

CADD

Benign

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.22

T;.

Eigen

Uncertain

0.32

Eigen_PC

Uncertain

0.26

FATHMM_MKL

Uncertain

0.92

LIST_S2

Benign

0.84

T;T

M_CAP

Benign

0.074

MetaRNN

Benign

0.41

T;T

MetaSVM

Uncertain

0.46

MutationAssessor

Benign

1.5

L;L

PhyloP100

4.6

PrimateAI

Uncertain

0.71

PROVEAN

Uncertain

-2.9

D;.

REVEL

Uncertain

0.47

Sift

Benign

0.066

T;.

Sift4G

Benign

0.13

T;T

Polyphen

0.99

D;.

Vest4

0.58

MVP

0.70

MPC

0.63

ClinPred

0.28

GERP RS

4.1

Varity_R

0.067

gMVP

0.64

Mutation Taster

=32/68

disease causing

(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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9-134731634-C-G

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