rs148243956

Variant names:

• chr6-33178361-G-A
• rs148243956
• NM_080680.3:c.1774-9C>T

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.1774-9C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000294 in 1,612,808 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 0.0016 (1 hom., cov: 31)
  • Exomes 𝑓: 0.00016 (0 hom.)
• Consequence: COL11A2 NM_080680.3 intron
• Scores: Splicing: ADA: 0.00005140
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8
• Conservation: PhyloP100: 0.516
• 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=-0.71).
• BP6: Variant 6-33178361-G-A is Benign according to our data. Variant chr6-33178361-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 227262.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 = 0.00162 (246/152032) while in subpopulation AFR AF = 0.0056 (232/41448). AF 95% confidence interval is 0.00501. There are 1 homozygotes in GnomAd4. There are 113 alleles in the male GnomAd4 subpopulation. Median coverage is 31. 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.1774-9C>T		intron	N/A	NP_542411.2	A0A0C4DFS1
	COL11A2	NM_001424108.1		c.1594-9C>T		intron	N/A	NP_001411037.1
	COL11A2	NM_080681.3		c.1516-9C>T		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.1774-9C>T		intron	N/A	ENSP00000339915.2	A0A0C4DFS1
	COL11A2	ENST00000930122.1		c.1594-9C>T		intron	N/A	ENSP00000600181.1
	COL11A2	ENST00000374708.8	TSL:5	c.1516-9C>T		intron	N/A	ENSP00000363840.4	Q4VXY6

Frequencies

GnomAD3 genomes AF: 0.00161 AC: 244 AN: 151914 Hom.: 1 Cov.: 31

Gnomad AFR AF: 0.00557

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000590

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00144

GnomAD2 exomes AF: 0.000470 AC: 116 AN: 246670 AF XY: 0.000350

Gnomad AFR exome AF: 0.00587

Gnomad AMR exome AF: 0.000435

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000452

Gnomad OTH exome AF: 0.000494

GnomAD4 exome AF: 0.000156 AC: 228 AN: 1460776 Hom.: 0 Cov.: 35 AF XY: 0.000132 AC XY: 96 AN XY: 726704

African (AFR) AF: 0.00499 AC: 167 AN: 33480

American (AMR) AF: 0.000447 AC: 20 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.000104 AC: 9 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52334

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5768

European-Non Finnish (NFE) AF: 0.00000629 AC: 7 AN: 1111994

Other (OTH) AF: 0.000397 AC: 24 AN: 60386

GnomAD4 genome AF: 0.00162 AC: 246 AN: 152032 Hom.: 1 Cov.: 31 AF XY: 0.00152 AC XY: 113 AN XY: 74332

African (AFR) AF: 0.00560 AC: 232 AN: 41448

American (AMR) AF: 0.000589 AC: 9 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.00 AC: 0 AN: 5158

South Asian (SAS) AF: 0.000208 AC: 1 AN: 4816

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10610

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 67938

Other (OTH) AF: 0.00142 AC: 3 AN: 2110

Alfa AF: 0.000960 Hom.: 0

Bravo AF: 0.00187

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

ClinVar submissions

Significance: Benign/Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	3	not specified (3)
-	-	1	Fibrochondrogenesis 2 (1)
-	-	1	not provided (1)
-	-	1	Otospondylomegaepiphyseal dysplasia, autosomal dominant (1)
-	-	1	Otospondylomegaepiphyseal dysplasia, autosomal recessive (1)
-	-	1	Stickler Syndrome, Dominant (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.71
CADD	Benign	15
DANN	Benign	0.83
PhyloP100		0.52
Mutation Taster		=100/0	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000051
dbscSNV1_RF	Benign	0.0080
SpliceAI score (max)		0.010		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: rs148243956; hg19: chr6-33146138;