rs149832668

Positions:

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 1P and 14B. PP2BP4_StrongBP6_ModerateBS1BS2

The NM_004370.6(COL12A1):c.2480C>T(p.Thr827Met) variant causes a missense change. The variant allele was found at a frequency of 0.000377 in 1,614,084 control chromosomes in the GnomAD database, including 7 homozygotes. 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 Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. T827T) has been classified as Benign.

Frequency

Genomes: 𝑓 0.00019 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00040 ( 6 hom. )

Consequence

COL12A1
NM_004370.6 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 3.66

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 -13 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), COL12A1. . Gene score misZ 2.106 (greater than the threshold 3.09). Trascript score misZ 3.5535 (greater than threshold 3.09). GenCC has associacion of gene with Bethlem myopathy, Bethlem myopathy 2, Ullrich congenital muscular dystrophy 2, Ullrich congenital muscular dystrophy.

BP4

Computational evidence support a benign effect (MetaRNN=0.01568389).

BP6

Variant 6-75175268-G-A is Benign according to our data. Variant chr6-75175268-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 542513.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000191 (29/152208) while in subpopulation EAS AF= 0.00521 (27/5178). AF 95% confidence interval is 0.00368. There are 1 homozygotes in gnomad4. There are 15 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 6 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COL12A1	NM_004370.6 linkuse as main transcript	c.2480C>T	p.Thr827Met	missense_variant	13/66	ENST00000322507.13	NP_004361.3	Q99715-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
COL12A1	ENST00000322507.13 linkuse as main transcript	c.2480C>T	p.Thr827Met	missense_variant	13/66	1	NM_004370.6	ENSP00000325146.8	Q99715-1
COL12A1	ENST00000345356.10 linkuse as main transcript	c.74-22786C>T		intron_variant		1		ENSP00000305147.9	Q99715-2
COL12A1	ENST00000483888.6 linkuse as main transcript	c.2480C>T	p.Thr827Met	missense_variant	13/65	5		ENSP00000421216.1	D6RGG3
COL12A1	ENST00000416123.6 linkuse as main transcript	c.2480C>T	p.Thr827Met	missense_variant	12/63	5		ENSP00000412864.2	Q99715-4

Frequencies

GnomAD3 genomes

AF:

0.000191

AC:

AN:

152090

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00520

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:

0.000197

AC:

AN:

249304

Hom.:

AF XY:

0.000163

AC XY:

AN XY:

135242

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00206

Gnomad SAS exome

AF:

0.000131

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000354

Gnomad OTH exome

AF:

0.000496

GnomAD4 exome

AF:

0.000396

AC:

579

AN:

1461876

Hom.:

Cov.:

AF XY:

0.000388

AC XY:

282

AN XY:

727242

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0135

Gnomad4 SAS exome

AF:

0.000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000207

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.000191

AC:

AN:

152208

Hom.:

Cov.:

AF XY:

0.000202

AC XY:

AN XY:

74414

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00521

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000171

Hom.:

Bravo

AF:

0.0000642

ExAC

AF:

0.000240

AC:

Asia WGS

AF:

0.00144

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Bethlem myopathy 2;C4225314:Ullrich congenital muscular dystrophy 2

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 01, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.25

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.085

T;.;.

Eigen

Uncertain

0.33

Eigen_PC

Uncertain

0.43

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.91

D;D;D

M_CAP

Benign

0.032

MetaRNN

Benign

0.016

T;T;T

MetaSVM

Benign

-0.93

MutationAssessor

Uncertain

2.5

M;M;.

PrimateAI

Benign

0.46

PROVEAN

Benign

-0.70

N;N;N

REVEL

Benign

0.14

Sift

Benign

0.23

T;T;T

Sift4G

Uncertain

0.0080

D;D;D

Polyphen

0.69

P;.;.

Vest4

0.54

MVP

0.48

MPC

0.58

ClinPred

0.067

GERP RS

5.8

Varity_R

0.055

gMVP

0.60

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.17

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