rs200698641

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS1

The NM_004370.6(COL12A1):​c.2879C>T​(p.Thr960Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000378 in 1,613,744 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. T960T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000035 ( 0 hom. )

Consequence

COL12A1
NM_004370.6 missense

Scores

1
4
13

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1O:1

Conservation

PhyloP100: 6.29

Publications

0 publications found
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 Gene-Disease associations (from GenCC):
  • Bethlem myopathy 2
    Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
  • Bethlem myopathy 2
    Inheritance: AD Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Illumina, Genomics England PanelApp
  • Ullrich congenital muscular dystrophy 2
    Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
  • Bethlem myopathy
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • Ullrich congenital muscular dystrophy
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.10065156).
BP6
Variant 6-75165611-G-A is Benign according to our data. Variant chr6-75165611-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 475853.
BS1
Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.0000658 (10/152000) while in subpopulation EAS AF = 0.00116 (6/5178). AF 95% confidence interval is 0.000505. There are 0 homozygotes in GnomAd4. There are 4 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004370.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
COL12A1
NM_004370.6
MANE Select
c.2879C>Tp.Thr960Met
missense
Exon 14 of 66NP_004361.3
COL12A1
NM_001424113.1
c.2879C>Tp.Thr960Met
missense
Exon 14 of 66NP_001411042.1
COL12A1
NM_001424114.1
c.2879C>Tp.Thr960Met
missense
Exon 14 of 65NP_001411043.1

Ensembl Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
COL12A1
ENST00000322507.13
TSL:1 MANE Select
c.2879C>Tp.Thr960Met
missense
Exon 14 of 66ENSP00000325146.8
COL12A1
ENST00000345356.10
TSL:1
c.74-13129C>T
intron
N/AENSP00000305147.9
COL12A1
ENST00000483888.6
TSL:5
c.2879C>Tp.Thr960Met
missense
Exon 14 of 65ENSP00000421216.1

Frequencies

GnomAD3 genomes
AF:
0.0000658
AC:
10
AN:
152000
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000242
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00116
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.0000944
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000722
AC:
18
AN:
249364
AF XY:
0.0000813
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.000298
Gnomad EAS exome
AF:
0.000612
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000177
Gnomad OTH exome
AF:
0.000330
GnomAD4 exome
AF:
0.0000349
AC:
51
AN:
1461744
Hom.:
0
Cov.:
31
AF XY:
0.0000289
AC XY:
21
AN XY:
727186
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33474
American (AMR)
AF:
0.0000224
AC:
1
AN:
44704
Ashkenazi Jewish (ASJ)
AF:
0.000536
AC:
14
AN:
26132
East Asian (EAS)
AF:
0.000302
AC:
12
AN:
39694
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86256
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53418
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.0000171
AC:
19
AN:
1111908
Other (OTH)
AF:
0.0000828
AC:
5
AN:
60390
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.486
Heterozygous variant carriers
0
4
8
11
15
19
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000658
AC:
10
AN:
152000
Hom.:
0
Cov.:
32
AF XY:
0.0000539
AC XY:
4
AN XY:
74226
show subpopulations
African (AFR)
AF:
0.0000242
AC:
1
AN:
41368
American (AMR)
AF:
0.00
AC:
0
AN:
15226
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00116
AC:
6
AN:
5178
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4830
European-Finnish (FIN)
AF:
0.0000944
AC:
1
AN:
10592
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000294
AC:
2
AN:
68016
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.510
Heterozygous variant carriers
0
1
2
2
3
4
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000658
Hom.:
0
Bravo
AF:
0.0000491
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000122
AC:
1
ExAC
AF:
0.0000579
AC:
7
EpiCase
AF:
0.00
EpiControl
AF:
0.0000593

ClinVar

ClinVar submissions as Germline

Significance:Conflicting classifications of pathogenicity
Revision:criteria provided, conflicting classifications
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
2
-
not provided (2)
-
-
1
Bethlem myopathy 2;C4225314:Ullrich congenital muscular dystrophy 2 (1)
-
-
-
Bethlem myopathy (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.11
BayesDel_addAF
Benign
-0.23
T
BayesDel_noAF
Benign
-0.20
CADD
Uncertain
25
DANN
Uncertain
0.99
DEOGEN2
Benign
0.20
T
Eigen
Uncertain
0.38
Eigen_PC
Uncertain
0.46
FATHMM_MKL
Pathogenic
0.97
D
LIST_S2
Uncertain
0.90
D
M_CAP
Benign
0.023
T
MetaRNN
Benign
0.10
T
MetaSVM
Benign
-0.99
T
MutationAssessor
Benign
1.7
L
PhyloP100
6.3
PrimateAI
Benign
0.46
T
PROVEAN
Benign
-1.4
N
REVEL
Benign
0.22
Sift
Benign
0.18
T
Sift4G
Benign
0.094
T
Polyphen
0.86
P
Vest4
0.45
MVP
0.44
MPC
0.57
ClinPred
0.089
T
GERP RS
5.5
Varity_R
0.077
gMVP
0.64
Mutation Taster
=90/10
polymorphism

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

Other links and lift over

dbSNP: rs200698641; hg19: chr6-75875327; API