rs371344739

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 3P and 2B. PM1PP2BP4_Moderate

The NM_000090.4(COL3A1):c.2498A>G(p.Lys833Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000109 in 1,551,676 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 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. K833I) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

COL3A1
NM_000090.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:10B:1O:1

Conservation

PhyloP100: 3.11

Publications

1 publications found

Variant links:

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]

COL3A1 Gene-Disease associations (from GenCC):

autosomal dominant Ehlers-Danlos syndrome, vascular type
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp
Ehlers-Danlos syndrome, vascular type
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
polymicrogyria with or without vascular-type Ehlers-Danlos syndrome
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)

COL3A1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM1

In a hotspot region, there are 9 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 13 uncertain in NM_000090.4

PP2

Missense variant in the COL3A1 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 495 curated pathogenic missense variants (we use a threshold of 10). The gene has 19 curated benign missense variants. Gene score misZ: 4.0879 (above the threshold of 3.09). Trascript score misZ: 4.5995 (above the threshold of 3.09). GenCC associations: The gene is linked to Ehlers-Danlos syndrome, vascular type, polymicrogyria with or without vascular-type Ehlers-Danlos syndrome, autosomal dominant Ehlers-Danlos syndrome, vascular type.

BP4

Computational evidence support a benign effect (MetaRNN=0.22208524).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000090.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	COL3A1	NM_000090.4	MANE Select	c.2498A>G	p.Lys833Arg	missense	Exon 36 of 51	NP_000081.2	P02461-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
COL3A1	ENST00000304636.9	TSL:1 MANE Select	c.2498A>G	p.Lys833Arg	missense	Exon 36 of 51	ENSP00000304408.4	P02461-1
COL3A1	ENST00000450867.2	TSL:1	c.2399A>G	p.Lys800Arg	missense	Exon 35 of 50	ENSP00000415346.2	H7C435
COL3A1	ENST00000879201.1		c.2489A>G	p.Lys830Arg	missense	Exon 36 of 51	ENSP00000549260.1

Frequencies

GnomAD3 genomes

AF:

0.0000855

AC:

AN:

152062

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.000162

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000128

AC:

AN:

156634

AF XY:

0.000158

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:

0.00

Gnomad NFE exome

AF:

0.000247

Gnomad OTH exome

AF:

0.000226

GnomAD4 exome

AF:

0.000111

AC:

156

AN:

1399496

Hom.:

Cov.:

AF XY:

0.000112

AC XY:

AN XY:

690266

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31616

American (AMR)

AF:

0.0000560

AC:

AN:

35710

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25182

East Asian (EAS)

AF:

0.00

AC:

AN:

35752

South Asian (SAS)

AF:

0.000139

AC:

AN:

79252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49278

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

0.000130

AC:

140

AN:

1079000

Other (OTH)

AF:

0.0000517

AC:

AN:

58008

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.469

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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

AF:

0.0000854

AC:

AN:

152180

Hom.:

Cov.:

AF XY:

0.0000806

AC XY:

AN XY:

74406

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41506

American (AMR)

AF:

0.000131

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5156

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000162

AC:

AN:

68006

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.448

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000205

Hom.:

Bravo

AF:

0.000121

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000122

AC:

ExAC

AF:

0.0000657

AC:

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Ehlers-Danlos syndrome, type 4 (5)

Familial thoracic aortic aneurysm and aortic dissection (2)

not provided (2)

not specified (2)

Ehlers-Danlos syndrome, type 4;C5193040:Polymicrogyria with or without vascular-type Ehlers-Danlos syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.079

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.24

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.46

Eigen

Benign

-0.28

Eigen_PC

Benign

-0.17

FATHMM_MKL

Uncertain

0.81

LIST_S2

Benign

0.83

M_CAP

Benign

0.058

MetaRNN

Benign

0.22

MetaSVM

Uncertain

-0.16

MutationAssessor

Benign

1.2

PhyloP100

3.1

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-1.9

REVEL

Benign

0.25

Sift

Benign

0.077

Sift4G

Benign

0.095

Polyphen

0.0020

Vest4

0.17

MVP

0.69

MPC

0.51

ClinPred

0.074

GERP RS

1.8

Varity_R

0.075

gMVP

0.26

Mutation Taster

=96/4

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over