rs79632685

Variant summary

Our verdict is Benign. Variant got -15 ACMG points: 1P and 16B. PP2BP4_StrongBP6_Very_StrongBS1

The NM_000090.4(COL3A1):c.130G>A(p.Val44Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000252 in 1,613,206 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00013 ( 1 hom. )

Consequence

COL3A1
NM_000090.4 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: 8.15

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 links:

LOC105373791 (HGNC:):

LOC105373791 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -15 ACMG points.

PP2

Missense variant where missense usually causes diseases, COL3A1

BP4

Computational evidence support a benign effect (MetaRNN=0.010945439).

BP6

Variant 2-188984810-G-A is Benign according to our data. Variant chr2-188984810-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 199707.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00145 (220/152084) while in subpopulation AFR AF= 0.00518 (215/41526). AF 95% confidence interval is 0.00461. There are 0 homozygotes in gnomad4. There are 96 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
COL3A1	NM_000090.4 linkuse as main transcript	c.130G>A	p.Val44Ile	missense_variant	2/51	ENST00000304636.9
LOC105373791	XR_007087614.1 linkuse as main transcript	n.10C>T		non_coding_transcript_exon_variant	1/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
COL3A1	ENST00000304636.9 linkuse as main transcript	c.130G>A	p.Val44Ile	missense_variant	2/51	1	NM_000090.4	P1	P02461-1
COL3A1	ENST00000450867.2 linkuse as main transcript	c.130G>A	p.Val44Ile	missense_variant	2/50	1
COL3A1	ENST00000470167.1 linkuse as main transcript	n.226G>A		non_coding_transcript_exon_variant	2/2	2

Frequencies

GnomAD3 genomes

AF:

0.00145

AC:

220

AN:

151966

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00519

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000197

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:

0.000323

AC:

AN:

250974

Hom.:

AF XY:

0.000229

AC XY:

AN XY:

135620

show subpopulations

Gnomad AFR exome

AF:

0.00455

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000353

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000127

AC:

186

AN:

1461122

Hom.:

Cov.:

AF XY:

0.000113

AC XY:

AN XY:

726886

show subpopulations

Gnomad4 AFR exome

AF:

0.00484

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000756

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000630

Gnomad4 OTH exome

AF:

0.000182

GnomAD4 genome

AF:

0.00145

AC:

220

AN:

152084

Hom.:

Cov.:

AF XY:

0.00129

AC XY:

AN XY:

74356

show subpopulations

Gnomad4 AFR

AF:

0.00518

Gnomad4 AMR

AF:

0.000197

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:

0.000283

Hom.:

Bravo

AF:

0.00138

ESP6500AA

AF:

0.00431

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000412

AC:

ClinVar

Significance: Likely benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Familial thoracic aortic aneurysm and aortic dissection

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Jul 22, 2019	This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
Likely benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Nov 14, 2018	- -

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Apr 01, 2021	This variant is associated with the following publications: (PMID: 25758994) -
Likely benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Sep 22, 2023	- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Aug 10, 2023

- -

Ehlers-Danlos syndrome, type 4

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 20, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.21

Cadd

Benign

Dann

Uncertain

1.0

DEOGEN2

Benign

0.14

T;.

Eigen

Uncertain

0.65

Eigen_PC

Uncertain

0.64

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.91

D;D

M_CAP

Benign

0.034

MetaRNN

Benign

0.011

T;T

MetaSVM

Benign

-0.28

MutationAssessor

Benign

1.2

L;L

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.51

PROVEAN

Benign

-0.39

N;N

REVEL

Benign

0.27

Sift

Benign

0.34

T;T

Sift4G

Benign

0.23

T;T

Polyphen

1.0

D;.

Vest4

0.32

MVP

0.72

MPC

0.51

ClinPred

0.084

GERP RS

5.0

Varity_R

0.11

gMVP

0.33

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

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