rs762810181

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BS2

The NM_000093.5(COL5A1):c.3082C>T(p.Leu1028Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000343 in 1,456,628 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. L1028L) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

COL5A1
NM_000093.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.31

Publications

0 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 -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BS2

High AC in GnomAdExome4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COL5A1	NM_000093.5 link	c.3082C>T	p.Leu1028Phe	missense_variant	Exon 39 of 66	ENST00000371817.8	NP_000084.3	P20908-1A0A024R8E5B2ZZ86Q59EE7
COL5A1	NM_001278074.1 link	c.3082C>T	p.Leu1028Phe	missense_variant	Exon 39 of 66		NP_001265003.1	B2ZZ86Q59EE7
COL5A1	XM_017014266.3 link	c.3082C>T	p.Leu1028Phe	missense_variant	Exon 39 of 65		XP_016869755.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
COL5A1	ENST00000371817.8 link	c.3082C>T	p.Leu1028Phe	missense_variant	Exon 39 of 66	1	NM_000093.5	ENSP00000360882.3		P20908-1
COL5A1	ENST00000371820.4 link	c.3082C>T	p.Leu1028Phe	missense_variant	Exon 39 of 66	2		ENSP00000360885.4		P20908-2H7BY82

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000847

AC:

AN:

236132

AF XY:

0.0000156

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:

0.0000495

Gnomad NFE exome

AF:

0.00000946

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000343

AC:

AN:

1456628

Hom.:

Cov.:

AF XY:

0.00000414

AC XY:

AN XY:

723984

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33446

American (AMR)

AF:

0.00

AC:

AN:

44010

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25926

East Asian (EAS)

AF:

0.00

AC:

AN:

39540

South Asian (SAS)

AF:

0.00

AC:

AN:

85108

European-Finnish (FIN)

AF:

0.0000382

AC:

AN:

52414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.00000270

AC:

AN:

1110276

Other (OTH)

AF:

0.00

AC:

AN:

60148

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000826

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Ehlers-Danlos syndrome, classic type, 1

Uncertain:1

Apr 06, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In summary, this variant is a rare missense change with an uncertain effect on protein function. There is no indication that it causes disease, but the available evidence is currently insufficient to prove that conclusively. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). The frequency data for this variant (rs762810181) in the population databases is unreliable, as metrics indicate poor quality at this position in the ExAC database. This variant has not been reported in the literature in an individual with a COL5A1-related disease. This sequence change replaces leucine with phenylalanine at codon 1028 of the COL5A1 protein (p.Leu1028Phe). The leucine residue is highly conserved and there is a small physicochemical difference between leucine and phenylalanine. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.55

BayesDel_addAF

Uncertain

0.099

BayesDel_noAF

Benign

-0.10

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.61

D;.

Eigen

Uncertain

0.30

Eigen_PC

Benign

0.21

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.80

T;T

M_CAP

Uncertain

0.19

MetaRNN

Uncertain

0.70

D;D

MetaSVM

Uncertain

0.68

MutationAssessor

Benign

1.6

L;L

PhyloP100

3.3

PrimateAI

Uncertain

0.71

PROVEAN

Uncertain

-3.4

D;.

REVEL

Uncertain

0.60

Sift

Uncertain

0.023

D;.

Sift4G

Uncertain

0.026

D;D

Polyphen

1.0

D;.

Vest4

0.55

MutPred

0.48

Gain of glycosylation at P1023 (P = 0.3222);Gain of glycosylation at P1023 (P = 0.3222);

MVP

0.71

MPC

0.58

ClinPred

0.95

GERP RS

3.5

Varity_R

0.25

gMVP

0.080

Mutation Taster

=61/39

polymorphism

(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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over