chr6-75086337-A-C

Variant names:

• chr6-75086337-A-C
• rs80299357
• NM_004370.6:c.*210T>G

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_004370.6(COL12A1):​c.*210T>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.016 in 330,192 control chromosomes in the GnomAD database, including 249 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.030 (223 hom., cov: 32)
  • Exomes 𝑓: 0.0037 (26 hom.)
• Consequence: COL12A1 NM_004370.6 3_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 2.02
• Publications: 0 publications found

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

ACMG classification

Our verdict: Benign. The variant received -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.5).
• BP6: Variant 6-75086337-A-C is Benign according to our data. Variant chr6-75086337-A-C is described in ClinVar as [Benign]. Clinvar id is 1289475.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.101 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COL12A1	NM_004370.6	c.*210T>G		3_prime_UTR_variant	Exon 66 of 66	ENST00000322507.13	NP_004361.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
COL12A1	ENST00000322507.13	c.*210T>G		3_prime_UTR_variant	Exon 66 of 66	1	NM_004370.6	ENSP00000325146.8

Frequencies

GnomAD3 genomes AF: 0.0303 AC: 4615 AN: 152140 Hom.: 220 Cov.: 32

Gnomad AFR AF: 0.104

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0147

Gnomad ASJ AF: 0.000576

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.000647

Gnomad OTH AF: 0.0244

GnomAD4 exome AF: 0.00372 AC: 662 AN: 177934 Hom.: 26 Cov.: 4 AF XY: 0.00313 AC XY: 295 AN XY: 94344

African (AFR) AF: 0.0988 AC: 470 AN: 4756

American (AMR) AF: 0.00776 AC: 45 AN: 5800

Ashkenazi Jewish (ASJ) AF: 0.00185 AC: 10 AN: 5412

East Asian (EAS) AF: 0.00 AC: 0 AN: 14022

South Asian (SAS) AF: 0.00 AC: 0 AN: 9556

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 24552

Middle Eastern (MID) AF: 0.00170 AC: 4 AN: 2348

European-Non Finnish (NFE) AF: 0.000473 AC: 48 AN: 101520

Other (OTH) AF: 0.00853 AC: 85 AN: 9968

GnomAD4 genome AF: 0.0304 AC: 4629 AN: 152258 Hom.: 223 Cov.: 32 AF XY: 0.0290 AC XY: 2160 AN XY: 74462

African (AFR) AF: 0.104 AC: 4306 AN: 41532

American (AMR) AF: 0.0146 AC: 224 AN: 15296

Ashkenazi Jewish (ASJ) AF: 0.000576 AC: 2 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5182

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10608

Middle Eastern (MID) AF: 0.00680 AC: 2 AN: 294

European-Non Finnish (NFE) AF: 0.000632 AC: 43 AN: 68024

Other (OTH) AF: 0.0241 AC: 51 AN: 2116

Alfa AF: 0.0163 Hom.: 30

Bravo AF: 0.0347

Asia WGS AF: 0.00433 AC: 15 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Aug 03, 2018

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.50
CADD	Benign	13
DANN	Benign	0.87
PhyloP100		2.0
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs80299357; hg19: chr6-75796053;