6-75128355-G-T

Position:

chr6-75128355-G-T

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 1P and 20B. PP2BP4_StrongBP6_Very_StrongBS1BS2

The NM_004370.6(COL12A1):c.6281C>A(p.Thr2094Asn) variant causes a missense change. The variant allele was found at a frequency of 0.000214 in 1,610,148 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.00041 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00019 ( 2 hom. )

Consequence

COL12A1
NM_004370.6 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 3.95

Variant links:

Genes affected

COL12A1 (HGNC:2188): (collagen type XII alpha 1 chain) This gene encodes the alpha chain of type XII collagen, a member of the FACIT (fibril-associated collagens with interrupted triple helices) collagen family. Type XII collagen is a homotrimer found in association with type I collagen, an association that is thought to modify the interactions between collagen I fibrils and the surrounding matrix. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2008]

COL12A1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -19 ACMG points.

PP2

Missense variant where missense usually causes diseases, COL12A1

BP4

Computational evidence support a benign effect (MetaRNN=0.009956807).

BP6

Variant 6-75128355-G-T is Benign according to our data. Variant chr6-75128355-G-T is described in ClinVar as [Benign]. Clinvar id is 259343.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr6-75128355-G-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000407 (62/152228) while in subpopulation EAS AF= 0.0108 (56/5182). AF 95% confidence interval is 0.00855. There are 1 homozygotes in gnomad4. There are 39 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 2 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
COL12A1	NM_004370.6 linkuse as main transcript	c.6281C>A	p.Thr2094Asn	missense_variant	38/66	ENST00000322507.13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
COL12A1	ENST00000322507.13 linkuse as main transcript	c.6281C>A	p.Thr2094Asn	missense_variant	38/66	1	NM_004370.6	P4	Q99715-1
COL12A1	ENST00000345356.10 linkuse as main transcript	c.2789C>A	p.Thr930Asn	missense_variant	23/51	1			Q99715-2
COL12A1	ENST00000483888.6 linkuse as main transcript	c.6281C>A	p.Thr2094Asn	missense_variant	38/65	5		A1
COL12A1	ENST00000416123.6 linkuse as main transcript	c.6281C>A	p.Thr2094Asn	missense_variant	37/63	5			Q99715-4

Frequencies

GnomAD3 genomes

AF:

0.000414

AC:

AN:

152110

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:

0.0110

Gnomad SAS

AF:

0.00103

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000897

AC:

221

AN:

246326

Hom.:

AF XY:

0.000875

AC XY:

117

AN XY:

133698

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0117

Gnomad SAS exome

AF:

0.000366

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000505

GnomAD4 exome

AF:

0.000193

AC:

282

AN:

1457920

Hom.:

Cov.:

AF XY:

0.000193

AC XY:

140

AN XY:

725168

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00509

Gnomad4 SAS exome

AF:

0.000457

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.01e-7

Gnomad4 OTH exome

AF:

0.000681

GnomAD4 genome

AF:

0.000407

AC:

AN:

152228

Hom.:

Cov.:

AF XY:

0.000524

AC XY:

AN XY:

74418

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.0108

Gnomad4 SAS

AF:

0.00104

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000234

Hom.:

Bravo

AF:

0.000427

ExAC

AF:

0.000753

AC:

Asia WGS

AF:

0.00346

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

COL12A1-related disorder

Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Sep 03, 2020

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Bethlem myopathy 2;C4225314:Ullrich congenital muscular dystrophy 2

Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Jan 31, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.26

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.030

T;T;.;.;.

Eigen

Uncertain

0.60

Eigen_PC

Uncertain

0.63

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.91

D;D;D;D;D

M_CAP

Benign

0.016

MetaRNN

Benign

0.010

T;T;T;T;T

MetaSVM

Benign

-0.81

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.60

Sift4G

Uncertain

0.037

D;D;D;D;D

Polyphen

1.0, 0.97

.;D;D;.;.

Vest4

0.46

MVP

0.44

MPC

1.5

ClinPred

0.049

GERP RS

5.9

Varity_R

0.22

gMVP

0.59

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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