rs760798318

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP2

The NM_000093.5(COL5A1):c.1264G>A(p.Asp422Asn) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,864 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D422E) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

COL5A1
NM_000093.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.09

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:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant where missense usually causes diseases, COL5A1

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
COL5A1	NM_000093.5 linkuse as main transcript	c.1264G>A	p.Asp422Asn	missense_variant	8/66	ENST00000371817.8
COL5A1	NM_001278074.1 linkuse as main transcript	c.1264G>A	p.Asp422Asn	missense_variant	8/66
COL5A1	XM_017014266.3 linkuse as main transcript	c.1264G>A	p.Asp422Asn	missense_variant	8/65

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
COL5A1	ENST00000371817.8 linkuse as main transcript	c.1264G>A	p.Asp422Asn	missense_variant	8/66	1	NM_000093.5	P4	P20908-1
COL5A1	ENST00000371820.4 linkuse as main transcript	c.1264G>A	p.Asp422Asn	missense_variant	8/66	2		A2	P20908-2
COL5A1	ENST00000469093.1 linkuse as main transcript	n.3G>A		non_coding_transcript_exon_variant	1/2	3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000402

AC:

AN:

248976

Hom.:

AF XY:

0.00

AC XY:

AN XY:

134788

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461864

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727236

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Jul 07, 2022

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; Not located in the triple helical region, where the majority of pathogenic missense variants occur (Symoens et al., 2012; HGMD); This variant is associated with the following publications: (PMID: 22696272) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.057

BayesDel_noAF

Benign

-0.24

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Benign

0.11

T;.

Eigen

Benign

0.19

Eigen_PC

Benign

0.067

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.88

D;D

M_CAP

Uncertain

0.15

MetaRNN

Uncertain

0.46

T;T

MetaSVM

Uncertain

0.49

MutationAssessor

Benign

1.9

M;M

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.60

PROVEAN

Benign

-0.99

N;.

REVEL

Uncertain

0.30

Sift

Benign

0.33

T;.

Sift4G

Benign

0.22

T;T

Polyphen

1.0

D;.

Vest4

0.44

MutPred

0.26

Gain of glycosylation at P423 (P = 0.1315);Gain of glycosylation at P423 (P = 0.1315);

MVP

0.86

MPC

0.21

ClinPred

0.42

GERP RS

4.2

Varity_R

0.049

gMVP

0.67

Splicing

Name

Calibrated prediction

Score

Prediction

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

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