chr6-33170332-G-A

Position:

chr6-33170332-G-A

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6BP7BS1BS2

The NM_080680.3(COL11A2):c.3576C>T(p.Gly1192=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00163 in 1,613,574 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0011 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0017 ( 3 hom. )

Consequence

COL11A2
NM_080680.3 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:9

Conservation

PhyloP100: 0.497

Variant links:

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.52).

BP6

Variant 6-33170332-G-A is Benign according to our data. Variant chr6-33170332-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 178326.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=9, Uncertain_significance=2}. Variant chr6-33170332-G-A is described in Lovd as [Likely_benign].

BP7

Synonymous conserved (PhyloP=0.497 with no splicing effect.

BS1

Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.00107 (163/152276) while in subpopulation AMR AF= 0.00222 (34/15306). AF 95% confidence interval is 0.00163. There are 0 homozygotes in gnomad4. There are 72 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 3 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COL11A2	NM_080680.3 linkuse as main transcript	c.3576C>T	p.Gly1192=	synonymous_variant	48/66	ENST00000341947.7	NP_542411.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
COL11A2	ENST00000341947.7 linkuse as main transcript	c.3576C>T	p.Gly1192=	synonymous_variant	48/66	5	NM_080680.3	ENSP00000339915	P4
COL11A2	ENST00000374708.8 linkuse as main transcript	c.3318C>T	p.Gly1106=	synonymous_variant	46/64	5		ENSP00000363840	A1
COL11A2	ENST00000477772.1 linkuse as main transcript	n.273-4516C>T		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes

AF:

0.00107

AC:

163

AN:

152158

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000314

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00222

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000577

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00156

Gnomad OTH

AF:

0.00239

GnomAD3 exomes

AF:

0.00113

AC:

282

AN:

248770

Hom.:

AF XY:

0.00111

AC XY:

150

AN XY:

134924

show subpopulations

Gnomad AFR exome

AF:

0.000503

Gnomad AMR exome

AF:

0.00157

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000928

Gnomad SAS exome

AF:

0.000131

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00163

Gnomad OTH exome

AF:

0.00264

GnomAD4 exome

AF:

0.00169

AC:

2467

AN:

1461298

Hom.:

Cov.:

AF XY:

0.00157

AC XY:

1139

AN XY:

726944

show subpopulations

Gnomad4 AFR exome

AF:

0.000359

Gnomad4 AMR exome

AF:

0.00168

Gnomad4 ASJ exome

AF:

0.000191

Gnomad4 EAS exome

AF:

0.000529

Gnomad4 SAS exome

AF:

0.000116

Gnomad4 FIN exome

AF:

0.000132

Gnomad4 NFE exome

AF:

0.00201

Gnomad4 OTH exome

AF:

0.00133

GnomAD4 genome

AF:

0.00107

AC:

163

AN:

152276

Hom.:

Cov.:

AF XY:

0.000967

AC XY:

AN XY:

74442

show subpopulations

Gnomad4 AFR

AF:

0.000313

Gnomad4 AMR

AF:

0.00222

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000579

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.00156

Gnomad4 OTH

AF:

0.00237

Alfa

AF:

0.00123

Hom.:

Bravo

AF:

0.00128

Asia WGS

AF:

0.000866

AC:

AN:

3478

EpiCase

AF:

0.00174

EpiControl

AF:

0.00238

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:9

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Benign:3

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Mar 01, 2024	COL11A2: BP4, BP7 -
Likely benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Oct 18, 2023	- -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -

not specified

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 06, 2017	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Likely benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Apr 30, 2012	Gly1192Gly in Exon 48 of COL11A2: This variant is not expected to have clinical significance because it does not alter an amino acid residue, is not located wit hin the splice consensus sequence, and has been identified in 0.1% (10/7020) of European American chromosomes from a broad population by the NHLBI Exome Sequenc ing Project (http://evs.gs.washington.edu/EVS; dbSNP rs138380958). -

Connective tissue disorder

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Center for Human Genetics, Inc, Center for Human Genetics, Inc	Jun 01, 2018	- -
Likely benign, criteria provided, single submitter	clinical testing	Genome Diagnostics Laboratory, The Hospital for Sick Children	Jul 01, 2020	- -

Otospondylomegaepiphyseal dysplasia, autosomal recessive

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Fibrochondrogenesis 2

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

Otospondylomegaepiphyseal dysplasia, autosomal dominant

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Stickler Syndrome, Dominant

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.52

CADD

Benign

DANN

Benign

0.80

Splicing

Name

Calibrated prediction

Score

Prediction

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over