rs746071518

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 1P and 5B. PP3BP6BS2

The NM_000093.5(COL5A1):c.4943A>G(p.Asp1648Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000026 in 1,612,390 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. D1648N) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000027 ( 0 hom. )

Consequence

COL5A1
NM_000093.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 9.18

Publications

1 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:

LOC101448202 (HGNC:):

LOC101448202 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.812

BP6

Variant 9-134824844-A-G is Benign according to our data. Variant chr9-134824844-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 237005.

BS2

High AC in GnomAdExome4 at 40 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
COL5A1	NM_000093.5 link	c.4943A>G	p.Asp1648Gly	missense_variant	Exon 62 of 66	ENST00000371817.8	NP_000084.3
COL5A1	NM_001278074.1 link	c.4943A>G	p.Asp1648Gly	missense_variant	Exon 62 of 66		NP_001265003.1
COL5A1	XM_017014266.3 link	c.4943A>G	p.Asp1648Gly	missense_variant	Exon 62 of 65		XP_016869755.1
LOC101448202	NR_103451.2 link	n.71-4635T>C		intron_variant	Intron 1 of 1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
COL5A1	ENST00000371817.8 link	c.4943A>G	p.Asp1648Gly	missense_variant	Exon 62 of 66	1	NM_000093.5	ENSP00000360882.3
COL5A1	ENST00000371820.4 link	c.4943A>G	p.Asp1648Gly	missense_variant	Exon 62 of 66	2		ENSP00000360885.4
COL5A1	ENST00000460264.5 link	n.411A>G		non_coding_transcript_exon_variant	Exon 3 of 5	3
COL5A1	ENST00000465877.1 link	n.123A>G		non_coding_transcript_exon_variant	Exon 1 of 4	3

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152130

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000329

AC:

AN:

242940

AF XY:

0.0000302

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:

0.0000740

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000274

AC:

AN:

1460260

Hom.:

Cov.:

AF XY:

0.0000317

AC XY:

AN XY:

726462

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33466

American (AMR)

AF:

0.00

AC:

AN:

44666

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26092

East Asian (EAS)

AF:

0.00

AC:

AN:

39680

South Asian (SAS)

AF:

0.00

AC:

AN:

86164

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52380

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.0000324

AC:

AN:

1111684

Other (OTH)

AF:

0.0000663

AC:

AN:

60366

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.476

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:

0.0000131

AC:

AN:

152130

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74320

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41416

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

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:

0.0000581

Hom.:

Bravo

AF:

0.0000340

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

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

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Familial thoracic aortic aneurysm and aortic dissection

Uncertain:1

Dec 31, 2020

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.D1648G variant (also known as c.4943A>G), located in coding exon 62 of the COL5A1 gene, results from an A to G substitution at nucleotide position 4943. The aspartic acid at codon 1648 is replaced by glycine, an amino acid with similar properties. This amino acid position is well 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. -

not provided

Uncertain:1

May 18, 2022

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 (Symoens et al., 2012; Stenson et al., 2014); Has not been previously published as pathogenic or benign to our knowledge -

Ehlers-Danlos syndrome, classic type, 1

Benign:1

Jun 15, 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

Variant interpreted as Uncertain significance and reported on 11-12-2019 by Lab or GTR ID 26957. 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

0.13

BayesDel_addAF

Benign

-0.045

BayesDel_noAF

Benign

-0.11

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.62

D;.

Eigen

Uncertain

0.65

Eigen_PC

Uncertain

0.59

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.88

D;D

M_CAP

Pathogenic

0.36

MetaRNN

Pathogenic

0.81

D;D

MetaSVM

Uncertain

0.12

MutationAssessor

Uncertain

2.7

M;M

PhyloP100

9.2

PrimateAI

Uncertain

0.75

PROVEAN

Uncertain

-4.1

D;.

REVEL

Uncertain

0.62

Sift

Uncertain

0.011

D;.

Sift4G

Uncertain

0.012

D;D

Polyphen

0.97

D;.

Vest4

0.64

MVP

0.74

MPC

0.39

ClinPred

0.86

GERP RS

4.2

PromoterAI

-0.019

Neutral

(source)

Varity_R

0.47

gMVP

0.69

Mutation Taster

=47/53

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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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