chr6-33165647-C-T

Position:

chr6-33165647-C-T

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 1P and 9B. PP2BP6BS1BS2

The NM_080680.3(COL11A2):c.4652G>A(p.Arg1551Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00109 in 1,612,628 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). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1551W) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00073 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0011 ( 3 hom. )

Consequence

COL11A2
NM_080680.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:5O:1

Conservation

PhyloP100: 1.93

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 -8 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.

BP6

Variant 6-33165647-C-T is Benign according to our data. Variant chr6-33165647-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 198337.We mark this variant Likely_benign, oryginal submissions are: {not_provided=1, Likely_benign=5, Uncertain_significance=5}.

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000729 (111/152202) while in subpopulation NFE AF= 0.00134 (91/67996). AF 95% confidence interval is 0.00112. There are 0 homozygotes in gnomad4. There are 53 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	UniProt
COL11A2	NM_080680.3 linkuse as main transcript	c.4652G>A	p.Arg1551Gln	missense_variant	63/66	ENST00000341947.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
COL11A2	ENST00000341947.7 linkuse as main transcript	c.4652G>A	p.Arg1551Gln	missense_variant	63/66	5	NM_080680.3	P4
COL11A2	ENST00000374708.8 linkuse as main transcript	c.4394G>A	p.Arg1465Gln	missense_variant	61/64	5		A1
COL11A2	ENST00000477772.1 linkuse as main transcript	n.442G>A		non_coding_transcript_exon_variant	6/9	2
COL11A2	ENST00000683572.1 linkuse as main transcript	n.458G>A		non_coding_transcript_exon_variant	6/9

Frequencies

GnomAD3 genomes

AF:

0.000730

AC:

111

AN:

152084

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000411

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00134

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000488

AC:

122

AN:

249774

Hom.:

AF XY:

0.000481

AC XY:

AN XY:

135194

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000979

Gnomad NFE exome

AF:

0.000979

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.00113

AC:

1647

AN:

1460426

Hom.:

Cov.:

AF XY:

0.00109

AC XY:

791

AN XY:

726610

show subpopulations

Gnomad4 AFR exome

AF:

0.000209

Gnomad4 AMR exome

AF:

0.000157

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000769

Gnomad4 NFE exome

AF:

0.00142

Gnomad4 OTH exome

AF:

0.000745

GnomAD4 genome

AF:

0.000729

AC:

111

AN:

152202

Hom.:

Cov.:

AF XY:

0.000712

AC XY:

AN XY:

74408

show subpopulations

Gnomad4 AFR

AF:

0.000409

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00134

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000938

Hom.:

Bravo

AF:

0.000627

TwinsUK

AF:

0.00162

AC:

ALSPAC

AF:

0.00234

AC:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.000814

AC:

ExAC

AF:

0.000576

AC:

EpiCase

AF:

0.000709

EpiControl

AF:

0.000711

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:5Benign:5Other:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:4Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Apr 08, 2024	Has not been previously published as pathogenic or benign to our knowledge; Observed with a likely pathogenic variant on the opposite allele (in trans) in a patient with a reported history of connective tissue disease referred for genetic testing at GeneDx; In silico analysis indicates that this missense variant does not alter protein structure/function; In silico analysis suggests this variant may impact gene splicing. In the absence of RNA/functional studies, the actual effect of this sequence change is unknown. -
Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Mar 01, 2019	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Jun 30, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Oct 13, 2017	- -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 29, 2024	- -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Mar 20, 2017

Variant classified as Uncertain Significance - Favor Benign. The p.Arg1551Gln va riant in COL11A2 has been reported by our laboratory in one individual with hear ing loss. It has also been reported in ClinVar (Variation ID# 198337) as likely benign or of uncertain significance. This variant has been identified in 0.1% (6 7/66340) of European chromosomes by the Exome Aggregation Consortium (ExAC, http ://exac.broadinstitute.org; dbSNP rs145343609). Although this variant has been s een in the general population, its frequency is not high enough to rule out a pa thogenic role. Arginine (Arg) at position 1551 is not conserved in 1 mammal (ten rec) or evolutionarily distant species, supporting that a change at this positio n may be tolerated. Computational prediction tools do not provide strong support for or against an impact to the protein; however, splice prediction tools do su ggest an impact to splicing. In summary, while the clinical significance of the p.Arg1551Gln variant is uncertain, the frequency and conservation data suggest i t is more likely to be benign. -

Otospondylomegaepiphyseal dysplasia, autosomal dominant

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Otospondylomegaepiphyseal dysplasia, autosomal recessive

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Fibrochondrogenesis 2

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

Stickler Syndrome, Dominant

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

COL11A2-related disorder

Other:1

not provided, no classification provided

phenotyping only

GenomeConnect - Brain Gene Registry

Variant interpreted as Uncertain significance and reported on 06-14-2021 by Lab The Children's Hospital of Philadelphia. Assertions are reported exactly as they appear on the patient provided laboratory report. GenomeConnect does not attempt to reinterpret the variant. The IDDRC-CTSA National Brain Gene Registry (BGR) is a study funded by the U.S. National Center for Advancing Translational Sciences (NCATS) and includes 13 Intellectual and Developmental Disability Research Center (IDDRC) institutions. The study is led by Principal Investigator Dr. Philip Payne from Washington University. The BGR is a data commons of gene variants paired with subject clinical information. This database helps scientists learn more about genetic changes and their impact on the brain and behavior. Participation in the Brain Gene Registry requires participation in GenomeConnect. More information about the Brain Gene Registry can be found on the study website - https://braingeneregistry.wustl.edu/. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.12

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.023

T;T;.

Eigen

Benign

-0.098

Eigen_PC

Benign

-0.12

FATHMM_MKL

Benign

0.25

M_CAP

Uncertain

0.13

MetaRNN

Benign

0.12

T;T;T

MetaSVM

Benign

-0.43

MutationTaster

Benign

0.99

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

PrimateAI

Uncertain

0.52

PROVEAN

Benign

-1.7

N;N;N

REVEL

Uncertain

0.45

Sift

Benign

0.17

T;T;T

Sift4G

Benign

0.065

T;T;T

Vest4

0.48

MVP

0.88

MPC

0.39

ClinPred

0.022

GERP RS

3.5

gMVP

0.62

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.26

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.26

Position offset: -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