rs62184175

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBS1_SupportingBS2

The NM_000393.5(COL5A2):c.3689C>T(p.Thr1230Ile) variant causes a missense change. The variant allele was found at a frequency of 0.0000242 in 1,613,950 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. 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. T1230S) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000026 ( 0 hom. )

Consequence

COL5A2
NM_000393.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.66

Variant links:

Genes affected

COL5A2 (HGNC:2210): (collagen type V alpha 2 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. Mutations in this gene are associated with Ehlers-Danlos syndrome, types I and II. [provided by RefSeq, Jul 2008]

COL5A2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.17468837).

BS1

Variant frequency is greater than expected in population nfe. gnomad4_exome allele frequency = 0.000026 (38/1461766) while in subpopulation NFE AF= 0.0000342 (38/1111998). AF 95% confidence interval is 0.0000254. There are 0 homozygotes in gnomad4_exome. There are 21 alleles in male gnomad4_exome subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAdExome4 at 38 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COL5A2	NM_000393.5 link	c.3689C>T	p.Thr1230Ile	missense_variant	Exon 51 of 54	ENST00000374866.9	NP_000384.2	P05997
COL5A2	XM_011510573.4 link	c.3551C>T	p.Thr1184Ile	missense_variant	Exon 54 of 57		XP_011508875.1
COL5A2	XM_047443251.1 link	c.3551C>T	p.Thr1184Ile	missense_variant	Exon 56 of 59		XP_047299207.1
COL5A2	XM_047443252.1 link	c.3551C>T	p.Thr1184Ile	missense_variant	Exon 55 of 58		XP_047299208.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
COL5A2	ENST00000374866.9 link	c.3689C>T	p.Thr1230Ile	missense_variant	Exon 51 of 54	1	NM_000393.5	ENSP00000364000.3		P05997
COL5A2	ENST00000618828.1 link	c.2528C>T	p.Thr843Ile	missense_variant	Exon 44 of 47	5		ENSP00000482184.1		A0A087WYX9

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000160

AC:

AN:

250610

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135574

show subpopulations

Gnomad AFR exome

AF:

0.0000625

Gnomad AMR exome

AF:

0.00

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:

0.0000265

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000260

AC:

AN:

1461766

Hom.:

Cov.:

AF XY:

0.0000289

AC XY:

AN XY:

727182

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.0000342

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152184

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74338

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Familial thoracic aortic aneurysm and aortic dissection

Uncertain:1

Jun 21, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.T1230I variant (also known as c.3689C>T), located in coding exon 51 of the COL5A2 gene, results from a C to T substitution at nucleotide position 3689. The threonine at codon 1230 is replaced by isoleucine, an amino acid with 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. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.45

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.22

CADD

Benign

DANN

Benign

0.95

DEOGEN2

Benign

0.26

T;T;T

Eigen

Benign

-0.13

Eigen_PC

Benign

0.086

FATHMM_MKL

Uncertain

0.92

LIST_S2

Benign

0.76

.;T;T

M_CAP

Benign

0.036

MetaRNN

Benign

0.17

T;T;T

MetaSVM

Benign

-0.30

MutationAssessor

Benign

1.2

L;.;L

PrimateAI

Uncertain

0.74

PROVEAN

Benign

-0.80

N;.;.

REVEL

Benign

0.26

Sift

Benign

0.42

T;.;.

Sift4G

Benign

0.45

T;T;.

Polyphen

0.021

B;.;B

Vest4

0.28

MutPred

0.47

Loss of phosphorylation at T1230 (P = 0.0143);.;Loss of phosphorylation at T1230 (P = 0.0143);

MVP

0.33

MPC

0.28

ClinPred

0.16

GERP RS

5.3

Varity_R

0.093

gMVP

0.52

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