6-75126367-T-A

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BA1

The NM_004370.6(COL12A1):​c.6444A>T​(p.Ile2148=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00318 in 1,610,398 control chromosomes in the GnomAD database, including 129 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.017 ( 71 hom., cov: 32)
Exomes 𝑓: 0.0018 ( 58 hom. )

Consequence

COL12A1
NM_004370.6 synonymous

Scores

2

Clinical Significance

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

Conservation

PhyloP100: 0.461
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 Benign. Variant got -19 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.31).
BP6
Variant 6-75126367-T-A is Benign according to our data. Variant chr6-75126367-T-A is described in ClinVar as [Benign]. Clinvar id is 475887.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=0.461 with no splicing effect.
BA1
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0554 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
COL12A1NM_004370.6 linkuse as main transcriptc.6444A>T p.Ile2148= synonymous_variant 39/66 ENST00000322507.13

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
COL12A1ENST00000322507.13 linkuse as main transcriptc.6444A>T p.Ile2148= synonymous_variant 39/661 NM_004370.6 P4Q99715-1
COL12A1ENST00000345356.10 linkuse as main transcriptc.2952A>T p.Ile984= synonymous_variant 24/511 Q99715-2
COL12A1ENST00000483888.6 linkuse as main transcriptc.6444A>T p.Ile2148= synonymous_variant 39/655 A1
COL12A1ENST00000416123.6 linkuse as main transcriptc.6444A>T p.Ile2148= synonymous_variant 38/635 Q99715-4

Frequencies

GnomAD3 genomes
AF:
0.0165
AC:
2509
AN:
152134
Hom.:
68
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0570
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00681
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000207
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00316
Gnomad NFE
AF:
0.000294
Gnomad OTH
AF:
0.00956
GnomAD3 exomes
AF:
0.00444
AC:
1106
AN:
248832
Hom.:
29
AF XY:
0.00313
AC XY:
422
AN XY:
134982
show subpopulations
Gnomad AFR exome
AF:
0.0617
Gnomad AMR exome
AF:
0.00310
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.000229
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000195
Gnomad OTH exome
AF:
0.00265
GnomAD4 exome
AF:
0.00178
AC:
2591
AN:
1458146
Hom.:
58
Cov.:
30
AF XY:
0.00148
AC XY:
1072
AN XY:
725430
show subpopulations
Gnomad4 AFR exome
AF:
0.0616
Gnomad4 AMR exome
AF:
0.00369
Gnomad4 ASJ exome
AF:
0.0000385
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.000163
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000104
Gnomad4 OTH exome
AF:
0.00364
GnomAD4 genome
AF:
0.0166
AC:
2528
AN:
152252
Hom.:
71
Cov.:
32
AF XY:
0.0162
AC XY:
1203
AN XY:
74450
show subpopulations
Gnomad4 AFR
AF:
0.0573
Gnomad4 AMR
AF:
0.00681
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000207
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000294
Gnomad4 OTH
AF:
0.00946
Alfa
AF:
0.00184
Hom.:
3
Bravo
AF:
0.0187
Asia WGS
AF:
0.00318
AC:
11
AN:
3478
EpiCase
AF:
0.000382
EpiControl
AF:
0.000357

ClinVar

Significance: Benign
Submissions summary: Benign:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:1
Benign, criteria provided, single submitterclinical testingGeneDxJul 05, 2018- -
Bethlem myopathy 2;C4225314:Ullrich congenital muscular dystrophy 2 Benign:1
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 29, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.31
CADD
Benign
6.7
DANN
Benign
0.72

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: rs36002196; hg19: chr6-75836083; API