rs777045810

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_000093.5(COL5A1):​c.5348G>A​(p.Arg1783His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000281 in 1,461,306 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict 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. R1783P) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.000028 ( 1 hom. )

Consequence

COL5A1
NM_000093.5 missense

Scores

5
14

Clinical Significance

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

Conservation

PhyloP100: 2.76

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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.21284965).
BP6
Variant 9-134835182-G-A is Benign according to our data. Variant chr9-134835182-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 487457.
BS2
High AC in GnomAdExome4 at 41 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
COL5A1NM_000093.5 linkc.5348G>A p.Arg1783His missense_variant Exon 65 of 66 ENST00000371817.8 NP_000084.3 P20908-1A0A024R8E5B2ZZ86Q59EE7
COL5A1NM_001278074.1 linkc.5348G>A p.Arg1783His missense_variant Exon 65 of 66 NP_001265003.1 B2ZZ86Q59EE7
LOC101448202NR_103451.2 linkn.71-14973C>T intron_variant Intron 1 of 1
COL5A1XM_017014266.3 linkc.*2429G>A downstream_gene_variant XP_016869755.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
COL5A1ENST00000371817.8 linkc.5348G>A p.Arg1783His missense_variant Exon 65 of 66 1 NM_000093.5 ENSP00000360882.3 P20908-1
COL5A1ENST00000371820.4 linkc.5348G>A p.Arg1783His missense_variant Exon 65 of 66 2 ENSP00000360885.4 P20908-2H7BY82

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD2 exomes
AF:
0.0000599
AC:
15
AN:
250286
AF XY:
0.0000590
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000289
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000886
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000281
AC:
41
AN:
1461306
Hom.:
1
Cov.:
33
AF XY:
0.0000316
AC XY:
23
AN XY:
726982
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33480
American (AMR)
AF:
0.000224
AC:
10
AN:
44716
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26134
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.000209
AC:
18
AN:
86254
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52880
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00000809
AC:
9
AN:
1111982
Other (OTH)
AF:
0.0000662
AC:
4
AN:
60392
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.474
Heterozygous variant carriers
0
3
5
8
10
13
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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
Cov.:
33
Alfa
AF:
0.0000283
Hom.:
0
Bravo
AF:
0.0000151
TwinsUK
AF:
0.00
AC:
0
ALSPAC
AF:
0.000259
AC:
1
ExAC
AF:
0.0000412
AC:
5

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:2Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Familial thoracic aortic aneurysm and aortic dissection Uncertain:1
Feb 20, 2024
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The p.R1783H variant (also known as c.5348G>A), located in coding exon 65 of the COL5A1 gene, results from a G to A substitution at nucleotide position 5348. The arginine at codon 1783 is replaced by histidine, an amino acid with highly similar properties. This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this alteration remains unclear. -

Ehlers-Danlos syndrome, classic type Uncertain:1
Aug 01, 2017
Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

COL5A1 NM_000093.4 exon65 p.Arg1783His (c.5348G>A): This variant not been reported in the literature, but is present in 9/33572 Latino individuals in the Genome Aggregation Database (http://gnomad.broadinstitute.org/rs777045810). Evolutionary conservation and computational predictive tools suggest that this variant may not impact the protein. Of note, 7 other species have the variant Histidine (His) at this position, further suggesting that this variant may be tolerated. In summary, data on this variant is insufficient for disease classification. Therefore, the clinical significance of this variant is uncertain. -

Ehlers-Danlos syndrome, classic type, 1 Benign:1
Jan 11, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.057
BayesDel_addAF
Benign
-0.22
T
BayesDel_noAF
Benign
-0.26
CADD
Benign
20
DANN
Uncertain
0.99
DEOGEN2
Uncertain
0.54
D;.
Eigen
Benign
-0.47
Eigen_PC
Benign
-0.36
FATHMM_MKL
Uncertain
0.82
D
LIST_S2
Benign
0.81
T;T
M_CAP
Benign
0.027
D
MetaRNN
Benign
0.21
T;T
MetaSVM
Benign
-0.80
T
MutationAssessor
Benign
1.2
L;L
PhyloP100
2.8
PrimateAI
Benign
0.31
T
PROVEAN
Benign
-1.8
N;.
REVEL
Benign
0.21
Sift
Uncertain
0.016
D;.
Sift4G
Uncertain
0.036
D;D
Polyphen
0.0090
B;.
Vest4
0.28
MutPred
0.56
Gain of catalytic residue at L1785 (P = 0.0375);Gain of catalytic residue at L1785 (P = 0.0375);
MVP
0.67
MPC
0.36
ClinPred
0.069
T
GERP RS
1.1
Varity_R
0.13
gMVP
0.49
Mutation Taster
=77/23
polymorphism

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

Other links and lift over

dbSNP: rs777045810; hg19: chr9-137727028; COSMIC: COSV65665436; COSMIC: COSV65665436; API