rs587779679
Variant summary
Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PM1PM2PP2PP3_StrongPP5_Moderate
The NM_000090.4(COL3A1):c.1646G>A(p.Gly549Glu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).
Frequency
Genomes: not found (cov: 30)
Consequence
COL3A1
NM_000090.4 missense
NM_000090.4 missense
Scores
16
2
1
Clinical Significance
Conservation
PhyloP100: 6.11
Genes affected
COL3A1 (HGNC:2201): (collagen type III alpha 1 chain) This gene encodes the pro-alpha1 chains of type III collagen, a fibrillar collagen that is found in extensible connective tissues such as skin, lung, uterus, intestine and the vascular system, frequently in association with type I collagen. Mutations in this gene are associated with Ehlers-Danlos syndrome type IV, and with aortic and arterial aneurysms. [provided by R. Dalgleish, Feb 2008]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 11 ACMG points.
PM1
?
In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 7 uncertain in NM_000090.4
PM2
?
Very rare variant in population databases, with high coverage;
PP2
?
Missense variant where missense usually causes diseases, COL3A1
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.993
PP5
?
Variant 2-188996162-G-A is Pathogenic according to our data. Variant chr2-188996162-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 101437.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
COL3A1 | NM_000090.4 | c.1646G>A | p.Gly549Glu | missense_variant | 23/51 | ENST00000304636.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
COL3A1 | ENST00000304636.9 | c.1646G>A | p.Gly549Glu | missense_variant | 23/51 | 1 | NM_000090.4 | P1 | |
COL3A1 | ENST00000450867.2 | c.1547G>A | p.Gly516Glu | missense_variant | 22/50 | 1 |
Frequencies
GnomAD3 genomes ? Cov.: 30
GnomAD3 genomes
?
Cov.:
30
GnomAD4 exome Cov.: 31
GnomAD4 exome
Cov.:
31
GnomAD4 genome ? Cov.: 30
GnomAD4 genome
?
Cov.:
30
ClinVar
Significance: Likely pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Ehlers-Danlos syndrome, type 4 Pathogenic:2
Pathogenic, no assertion criteria provided | clinical testing | Collagen Diagnostic Laboratory, University of Washington | - | - - |
Likely pathogenic, criteria provided, single submitter | clinical testing | Invitae | Sep 17, 2023 | In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. This variant disrupts the triple helix domain of COL3A1. Glycine residues within the Gly-Xaa-Yaa repeats of the triple helix domain are required for the structure and stability of fibrillar collagens (PMID: 7695699, 8218237, 19344236). In COL3A1, variants that affect these glycine residues are significantly enriched in individuals with disease (PMID: 24922459, 25758994) compared to the general population (ExAC). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt COL3A1 protein function. ClinVar contains an entry for this variant (Variation ID: 101437). This missense change has been observed in individual(s) with clinical features of Ehlers-Danlos syndrome (PMID: 10706896; Invitae). This variant is not present in population databases (gnomAD no frequency). This sequence change replaces glycine, which is neutral and non-polar, with glutamic acid, which is acidic and polar, at codon 549 of the COL3A1 protein (p.Gly549Glu). - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
DEOGEN2
Pathogenic
D;.
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Uncertain
D
LIST_S2
Pathogenic
D;D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D
MetaSVM
Pathogenic
D
MutationAssessor
Pathogenic
H;H
MutationTaster
Benign
D;D
PrimateAI
Pathogenic
D
PROVEAN
Pathogenic
D;D
REVEL
Pathogenic
Sift
Pathogenic
D;D
Sift4G
Pathogenic
D;D
Polyphen
P;.
Vest4
MutPred
Gain of solvent accessibility (P = 0.024);Gain of solvent accessibility (P = 0.024);
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at