rs757989702

Positions:

chr9-134818758-C-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2BP4BS2

The NM_000093.5(COL5A1):c.4333C>T(p.Pro1445Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000105 in 1,612,354 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 Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

COL5A1
NM_000093.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 3.10

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 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), COL5A1. . Gene score misZ 2.0682 (greater than the threshold 3.09). Trascript score misZ 4.1823 (greater than threshold 3.09). GenCC has associacion of gene with Ehlers-Danlos syndrome, classic type, 1, arterial disorder, Ehlers-Danlos syndrome, classic type.

BP4

Computational evidence support a benign effect (MetaRNN=0.39006498).

BS2

High AC in GnomAdExome4 at 15 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
COL5A1	NM_000093.5 linkuse as main transcript	c.4333C>T	p.Pro1445Ser	missense_variant	55/66	ENST00000371817.8
COL5A1	NM_001278074.1 linkuse as main transcript	c.4333C>T	p.Pro1445Ser	missense_variant	55/66
COL5A1	XM_017014266.3 linkuse as main transcript	c.4333C>T	p.Pro1445Ser	missense_variant	55/65

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
COL5A1	ENST00000371817.8 linkuse as main transcript	c.4333C>T	p.Pro1445Ser	missense_variant	55/66	1	NM_000093.5	P4	P20908-1
COL5A1	ENST00000371820.4 linkuse as main transcript	c.4333C>T	p.Pro1445Ser	missense_variant	55/66	2		A2	P20908-2

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151992

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

GnomAD3 exomes

AF:

0.0000121

AC:

AN:

247732

Hom.:

AF XY:

0.00000743

AC XY:

AN XY:

134568

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000269

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1460362

Hom.:

Cov.:

AF XY:

0.00000964

AC XY:

AN XY:

726496

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000135

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151992

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74232

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.00000756

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000594

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Jun 30, 2021

Has not been previously published as pathogenic or benign to our knowledge; Not observed at significant frequency in large population cohorts (Lek et al., 2016); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Occurs in the triple helical domain at the X position in the canonical Gly-X-Y repeat; although this variant may have an effect on normal protein folding and function, missense substitution at the X position is not a common mechanism of disease (Symoens et al., 2012; Stenson et al., 2014); Reported in ClinVar as a variant of uncertain significance (ClinVar Variant ID# 568806; Landrum et al., 2016); This variant is associated with the following publications: (PMID: 22696272, 26582918, 27535533) -

Ehlers-Danlos syndrome, classic type, 1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Feb 24, 2018

This sequence change replaces proline with serine at codon 1445 of the COL5A1 protein (p.Pro1445Ser). The proline residue is highly conserved and there is a moderate physicochemical difference between proline and serine. This variant is present in population databases (rs757989702, ExAC 0.002%). This variant has not been reported in the literature in individuals with COL5A1-related disease. 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: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C65"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.078

BayesDel_addAF

Uncertain

0.060

BayesDel_noAF

Benign

-0.090

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.64

D;.

Eigen

Benign

-0.076

Eigen_PC

Benign

-0.024

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.87

D;D

M_CAP

Pathogenic

0.37

MetaRNN

Benign

0.39

T;T

MetaSVM

Uncertain

0.60

MutationAssessor

Benign

1.7

L;L

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.70

PROVEAN

Uncertain

-4.1

D;.

REVEL

Uncertain

0.42

Sift

Benign

0.36

T;.

Sift4G

Benign

0.17

T;T

Polyphen

0.30

B;.

Vest4

0.38

MutPred

0.33

Gain of phosphorylation at P1445 (P = 0.0146);Gain of phosphorylation at P1445 (P = 0.0146);

MVP

0.68

MPC

0.30

ClinPred

0.60

GERP RS

3.8

Varity_R

0.13

gMVP

0.45

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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