6-33175614-G-A

Position:

chr6-33175614-G-A

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 1P and 20B. PP2BP4_StrongBP6_Very_StrongBS1BS2

The NM_080680.3(COL11A2):c.2336C>T(p.Pro779Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00204 in 1,612,892 control chromosomes in the GnomAD database, including 23 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P779S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0017 ( 1 hom., cov: 31)

Exomes 𝑓: 0.0021 ( 22 hom. )

Consequence

COL11A2
NM_080680.3 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:13

Conservation

PhyloP100: 2.77

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 -19 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), COL11A2. . Gene score misZ 2.3685 (greater than the threshold 3.09). Trascript score misZ 3.3886 (greater than threshold 3.09). GenCC has associacion of gene with otospondylomegaepiphyseal dysplasia, autosomal dominant nonsyndromic hearing loss 13, autosomal dominant nonsyndromic hearing loss, autosomal recessive nonsyndromic hearing loss 53, otospondylomegaepiphyseal dysplasia, autosomal dominant, nonsyndromic genetic hearing loss, fibrochondrogenesis, hearing loss, autosomal recessive, otospondylomegaepiphyseal dysplasia, autosomal recessive.

BP4

Computational evidence support a benign effect (MetaRNN=0.0162341).

BP6

Variant 6-33175614-G-A is Benign according to our data. Variant chr6-33175614-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 196635.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr6-33175614-G-A is described in Lovd as [Likely_benign]. Variant chr6-33175614-G-A is described in Lovd as [Likely_pathogenic].

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.00172 (262/152136) while in subpopulation SAS AF= 0.00685 (33/4816). AF 95% confidence interval is 0.00501. There are 1 homozygotes in gnomad4. There are 138 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 22 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
COL11A2	NM_080680.3 linkuse as main transcript	c.2336C>T	p.Pro779Leu	missense_variant	30/66	ENST00000341947.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
COL11A2	ENST00000341947.7 linkuse as main transcript	c.2336C>T	p.Pro779Leu	missense_variant	30/66	5	NM_080680.3	P4
COL11A2	ENST00000374708.8 linkuse as main transcript	c.2078C>T	p.Pro693Leu	missense_variant	28/64	5		A1
COL11A2	ENST00000361917.6 linkuse as main transcript	c.911C>T	p.Pro304Leu	missense_variant	17/24	5
COL11A2	ENST00000477772.1 linkuse as main transcript	n.272+1395C>T		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes

AF:

0.00172

AC:

261

AN:

152018

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000411

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00386

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00685

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00949

Gnomad NFE

AF:

0.00203

Gnomad OTH

AF:

0.00431

GnomAD3 exomes

AF:

0.00259

AC:

638

AN:

246358

Hom.:

AF XY:

0.00299

AC XY:

401

AN XY:

134304

show subpopulations

Gnomad AFR exome

AF:

0.000529

Gnomad AMR exome

AF:

0.00444

Gnomad ASJ exome

AF:

0.00120

Gnomad EAS exome

AF:

0.000328

Gnomad SAS exome

AF:

0.00629

Gnomad FIN exome

AF:

0.0000463

Gnomad NFE exome

AF:

0.00212

Gnomad OTH exome

AF:

0.00543

GnomAD4 exome

AF:

0.00207

AC:

3028

AN:

1460756

Hom.:

Cov.:

AF XY:

0.00221

AC XY:

1605

AN XY:

726696

show subpopulations

Gnomad4 AFR exome

AF:

0.000478

Gnomad4 AMR exome

AF:

0.00483

Gnomad4 ASJ exome

AF:

0.00119

Gnomad4 EAS exome

AF:

0.000202

Gnomad4 SAS exome

AF:

0.00643

Gnomad4 FIN exome

AF:

0.0000956

Gnomad4 NFE exome

AF:

0.00176

Gnomad4 OTH exome

AF:

0.00293

GnomAD4 genome

AF:

0.00172

AC:

262

AN:

152136

Hom.:

Cov.:

AF XY:

0.00186

AC XY:

138

AN XY:

74384

show subpopulations

Gnomad4 AFR

AF:

0.000410

Gnomad4 AMR

AF:

0.00386

Gnomad4 ASJ

AF:

0.000576

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00685

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00203

Gnomad4 OTH

AF:

0.00426

Alfa

AF:

0.00183

Hom.:

Bravo

AF:

0.00220

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.00156

AC:

ESP6500AA

AF:

0.000662

AC:

ESP6500EA

AF:

0.00185

AC:

ExAC

AF:

0.00303

AC:

359

Asia WGS

AF:

0.00375

AC:

AN:

3478

EpiCase

AF:

0.00262

EpiControl

AF:

0.00326

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:13

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

Likely benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	May 05, 2015	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 03, 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	PreventionGenetics, part of Exact Sciences	-	- -
Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Jul 20, 2015	p.Pro779Leu in exon 30 of COL11A2: This variant is not expected to have clinical significance because it has been identified in 0.76% (87/11452) Latino chromoso mes, in 0.69% (112/16264) South Asian chromosomes, and in 0.23% (143/63200) Eur opean Chromosomes by the Exome Aggregation Consortium Sequencing Project (ExAC, http://exac.broadinstitute.org; dbSNP rs150877886). -

not provided

Benign:4

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jul 01, 2024	COL11A2: BS2 -
Likely benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Nov 15, 2016	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Otospondylomegaepiphyseal dysplasia, autosomal recessive

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Mendelics	May 28, 2019	- -
Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 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 and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

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

- -

Fibrochondrogenesis 2

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 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 and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.084

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Uncertain

-0.050

CADD

Uncertain

DANN

Benign

0.93

DEOGEN2

Benign

0.093

T;T;.

Eigen

Benign

-0.097

Eigen_PC

Benign

-0.049

FATHMM_MKL

Uncertain

0.90

M_CAP

Pathogenic

0.60

MetaRNN

Benign

0.016

T;T;T

MetaSVM

Uncertain

-0.079

MutationTaster

Benign

1.0

D;D;D;D;D;D;D;D

PrimateAI

Uncertain

0.57

PROVEAN

Pathogenic

-6.7

D;D;D

REVEL

Uncertain

0.57

Sift

Benign

0.28

T;T;T

Sift4G

Benign

0.21

T;T;T

Vest4

0.58

MVP

0.79

MPC

0.99

ClinPred

0.054

GERP RS

3.4

gMVP

0.47

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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