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GeneBe

rs202153313

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS1

The NM_004370.6(COL12A1):c.1188A>C(p.Ala396=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000458 in 1,614,088 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00034 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00047 ( 1 hom. )

Consequence

COL12A1
NM_004370.6 synonymous

Scores

2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -0.470
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 -17 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.53).
BP6
Variant 6-75183954-T-G is Benign according to our data. Variant chr6-75183954-T-G is described in ClinVar as [Likely_benign]. Clinvar id is 259318.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-0.47 with no splicing effect.
BS1
Variant frequency is greater than expected in population nfe. gnomad4_exome allele frequency = 0.000471 (689/1461882) while in subpopulation NFE AF= 0.000483 (537/1112008). AF 95% confidence interval is 0.000449. There are 1 homozygotes in gnomad4_exome. There are 316 alleles in male gnomad4_exome subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
COL12A1NM_004370.6 linkuse as main transcriptc.1188A>C p.Ala396= synonymous_variant 9/66 ENST00000322507.13

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
COL12A1ENST00000322507.13 linkuse as main transcriptc.1188A>C p.Ala396= synonymous_variant 9/661 NM_004370.6 P4Q99715-1

Frequencies

GnomAD3 genomes
AF:
0.000335
AC:
51
AN:
152206
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000965
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000131
Gnomad ASJ
AF:
0.00461
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000426
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000353
AC:
88
AN:
249380
Hom.:
0
AF XY:
0.000333
AC XY:
45
AN XY:
135294
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00348
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.0000928
Gnomad NFE exome
AF:
0.000442
Gnomad OTH exome
AF:
0.000165
GnomAD4 exome
AF:
0.000471
AC:
689
AN:
1461882
Hom.:
1
Cov.:
32
AF XY:
0.000435
AC XY:
316
AN XY:
727240
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00486
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.0000374
Gnomad4 NFE exome
AF:
0.000483
Gnomad4 OTH exome
AF:
0.000381
GnomAD4 genome
AF:
0.000335
AC:
51
AN:
152206
Hom.:
0
Cov.:
32
AF XY:
0.000309
AC XY:
23
AN XY:
74350
show subpopulations
Gnomad4 AFR
AF:
0.0000965
Gnomad4 AMR
AF:
0.000131
Gnomad4 ASJ
AF:
0.00461
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000426
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000687
Hom.:
0
Bravo
AF:
0.000348
EpiCase
AF:
0.000327
EpiControl
AF:
0.000356

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:1
Likely benign, criteria provided, single submitterclinical testingPreventionGenetics, part of Exact Sciences-- -
not provided Benign:1
Likely benign, criteria provided, single submitterclinical testingGeneDxSep 24, 2020- -
Bethlem myopathy 2;C4225314:Ullrich congenital muscular dystrophy 2 Benign:1
Benign, criteria provided, single submitterclinical testingInvitaeJan 19, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.53
Cadd
Benign
6.9
Dann
Benign
0.62

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: rs202153313; hg19: chr6-75893670; API