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GeneBe

rs764600940

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 1P and 3B. PP2BP4BP6_Moderate

The NM_004370.6(COL12A1):​c.5767G>A​(p.Gly1923Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000828 in 1,448,884 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G1923A) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000083 ( 0 hom. )

Consequence

COL12A1
NM_004370.6 missense

Scores

4
11

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 3.51
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PP2
Missense variant where missense usually causes diseases, COL12A1
BP4
Computational evidence support a benign effect (MetaRNN=0.34569594).
BP6
Variant 6-75133320-C-T is Benign according to our data. Variant chr6-75133320-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 579860.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
COL12A1NM_004370.6 linkuse as main transcriptc.5767G>A p.Gly1923Arg missense_variant 34/66 ENST00000322507.13

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
COL12A1ENST00000322507.13 linkuse as main transcriptc.5767G>A p.Gly1923Arg missense_variant 34/661 NM_004370.6 P4Q99715-1
COL12A1ENST00000345356.10 linkuse as main transcriptc.2275G>A p.Gly759Arg missense_variant 19/511 Q99715-2
COL12A1ENST00000483888.6 linkuse as main transcriptc.5767G>A p.Gly1923Arg missense_variant 34/655 A1
COL12A1ENST00000416123.6 linkuse as main transcriptc.5767G>A p.Gly1923Arg missense_variant 33/635 Q99715-4

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.0000206
AC:
5
AN:
242888
Hom.:
0
AF XY:
0.00000759
AC XY:
1
AN XY:
131730
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000229
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000900
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000828
AC:
12
AN:
1448884
Hom.:
0
Cov.:
31
AF XY:
0.00000833
AC XY:
6
AN XY:
719970
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.000127
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000181
Gnomad4 OTH exome
AF:
0.0000835
GnomAD4 genome
Cov.:
32
Bravo
AF:
0.0000113
ExAC
AF:
0.00000828
AC:
1
Asia WGS
AF:
0.00202
AC:
7
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 submitterclinical testingInvitaeNov 19, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.20
BayesDel_addAF
Benign
-0.22
T
BayesDel_noAF
Benign
-0.26
CADD
Benign
23
DANN
Uncertain
0.99
DEOGEN2
Benign
0.012
T;T;.;.;.
Eigen
Uncertain
0.19
Eigen_PC
Benign
0.16
FATHMM_MKL
Benign
0.45
N
LIST_S2
Uncertain
0.95
D;D;D;D;D
M_CAP
Benign
0.038
D
MetaRNN
Benign
0.35
T;T;T;T;T
MetaSVM
Benign
-0.88
T
MutationTaster
Benign
0.79
N;N;N;N
PrimateAI
Uncertain
0.60
T
Sift4G
Benign
0.13
T;T;T;T;T
Polyphen
0.98, 0.93
.;D;P;.;.
Vest4
0.46
MutPred
0.68
.;Gain of MoRF binding (P = 0.0226);.;Gain of MoRF binding (P = 0.0226);Gain of MoRF binding (P = 0.0226);
MVP
0.51
MPC
0.59
ClinPred
0.26
T
GERP RS
5.9
Varity_R
0.11
gMVP
0.46

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.

Other links and lift over

dbSNP: rs764600940; hg19: chr6-75843036; API