chr6-33174229-C-T

Variant names:

• chr6-33174229-C-T
• rs368695514
• NM_080680.3:c.2431-11G>A

Variant summary

Our verdict is Benign. The variant received -16 ACMG points: 0P and 16B. BP4_Strong BP6_Very_Strong BS1

The NM_080680.3(COL11A2):​c.2431-11G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000183 in 1,554,140 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00042 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00016 (0 hom.)
• Consequence: COL11A2 NM_080680.3 intron
• Scores: Splicing: ADA: 0.00001809
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: -2.36
• Publications: 0 publications found

Genes affected

COL11A2 (HGNC:2187): (collagen type XI alpha 2 chain) This gene encodes one of the two alpha chains of type XI collagen, a minor fibrillar collagen. It is located on chromosome 6 very close to but separate from the gene for retinoid X receptor beta. Type XI collagen is a heterotrimer but the third alpha chain is a post-translationally modified alpha 1 type II chain. Proteolytic processing of this type XI chain produces PARP, a proline/arginine-rich protein that is an amino terminal domain. Mutations in this gene are associated with type III Stickler syndrome, otospondylomegaepiphyseal dysplasia (OSMED syndrome), Weissenbacher-Zweymuller syndrome, autosomal dominant non-syndromic sensorineural type 13 deafness (DFNA13), and autosomal recessive non-syndromic sensorineural type 53 deafness (DFNB53). Alternative splicing results in multiple transcript variants. A related pseudogene is located nearby on chromosome 6. [provided by RefSeq, Jul 2009]

COL11A2 Gene-Disease associations (from GenCC):

• autosomal dominant nonsyndromic hearing loss 13

  Inheritance: AD Classification: DEFINITIVE, STRONG, LIMITED Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
• otospondylomegaepiphyseal dysplasia, autosomal dominant

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, G2P, Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• autosomal recessive nonsyndromic hearing loss 53

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• nonsyndromic genetic hearing loss

  Inheritance: AR, AD Classification: DEFINITIVE, MODERATE Submitted by: ClinGen
• otospondylomegaepiphyseal dysplasia

  Inheritance: AR, AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
• otospondylomegaepiphyseal dysplasia, autosomal recessive

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• autosomal dominant nonsyndromic hearing loss

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• fibrochondrogenesis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• hearing loss, autosomal recessive

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -16 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BP6: Variant 6-33174229-C-T is Benign according to our data. Variant chr6-33174229-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 227265.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000421 (61/145016) while in subpopulation AFR AF = 0.000979 (37/37788). AF 95% confidence interval is 0.00073. There are 0 homozygotes in GnomAd4. There are 30 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_080680.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	COL11A2	NM_080680.3	MANE Select	c.2431-11G>A		intron	N/A	NP_542411.2	A0A0C4DFS1
	COL11A2	NM_001424108.1		c.2251-11G>A		intron	N/A	NP_001411037.1
	COL11A2	NM_080681.3		c.2173-11G>A		intron	N/A	NP_542412.2	Q4VXY6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	COL11A2	ENST00000341947.7	TSL:5 MANE Select	c.2431-11G>A		intron	N/A	ENSP00000339915.2	A0A0C4DFS1
	COL11A2	ENST00000930122.1		c.2251-11G>A		intron	N/A	ENSP00000600181.1
	COL11A2	ENST00000374708.8	TSL:5	c.2173-11G>A		intron	N/A	ENSP00000363840.4	Q4VXY6

Frequencies

GnomAD3 genomes AF: 0.000421 AC: 61 AN: 145016 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000979

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000336

Gnomad ASJ AF: 0.00293

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000136

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000284 AC: 46 AN: 162034 AF XY: 0.000263

Gnomad AFR exome AF: 0.000923

Gnomad AMR exome AF: 0.000189

Gnomad ASJ exome AF: 0.00199

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000205

Gnomad OTH exome AF: 0.000665

GnomAD4 exome AF: 0.000159 AC: 224 AN: 1409124 Hom.: 0 Cov.: 41 AF XY: 0.000164 AC XY: 114 AN XY: 696210

African (AFR) AF: 0.000659 AC: 21 AN: 31862

American (AMR) AF: 0.000106 AC: 4 AN: 37900

Ashkenazi Jewish (ASJ) AF: 0.00202 AC: 51 AN: 25300

East Asian (EAS) AF: 0.0000275 AC: 1 AN: 36372

South Asian (SAS) AF: 0.0000249 AC: 2 AN: 80332

European-Finnish (FIN) AF: 0.0000408 AC: 2 AN: 48998

Middle Eastern (MID) AF: 0.000350 AC: 2 AN: 5716

European-Non Finnish (NFE) AF: 0.000112 AC: 121 AN: 1084256

Other (OTH) AF: 0.000343 AC: 20 AN: 58388

GnomAD4 genome AF: 0.000421 AC: 61 AN: 145016 Hom.: 0 Cov.: 32 AF XY: 0.000424 AC XY: 30 AN XY: 70694

African (AFR) AF: 0.000979 AC: 37 AN: 37788

American (AMR) AF: 0.000336 AC: 5 AN: 14880

Ashkenazi Jewish (ASJ) AF: 0.00293 AC: 10 AN: 3412

East Asian (EAS) AF: 0.00 AC: 0 AN: 5062

South Asian (SAS) AF: 0.00 AC: 0 AN: 4522

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10134

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 312

European-Non Finnish (NFE) AF: 0.000136 AC: 9 AN: 66000

Other (OTH) AF: 0.00 AC: 0 AN: 2006

Alfa AF: 0.000457 Hom.: 0

Bravo AF: 0.000397

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	3	not provided (3)
-	-	2	not specified (2)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	0.10
DANN	Benign	0.53
PhyloP100		-2.4
Mutation Taster		=100/0	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000018
dbscSNV1_RF	Benign	0.0
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: rs368695514; hg19: chr6-33142006;