chr6-33178983-C-G

Position:

chr6-33178983-C-G

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_080680.3(COL11A2):c.1612-10G>C variant causes a splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0012 in 1,614,046 control chromosomes in the GnomAD database, including 6 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 0.0012 ( 1 hom., cov: 32)

Exomes 𝑓: 0.0012 ( 5 hom. )

Consequence

COL11A2
NM_080680.3 splice_polypyrimidine_tract, intron

Scores

Splicing: ADA: 0.0008821

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:10

Conservation

PhyloP100: -0.00500

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 -13 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.73).

BP6

Variant 6-33178983-C-G is Benign according to our data. Variant chr6-33178983-C-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 227260.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=7, Uncertain_significance=2, Benign=1}. Variant chr6-33178983-C-G is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.00116 (176/152188) while in subpopulation SAS AF= 0.00249 (12/4822). AF 95% confidence interval is 0.00144. There are 1 homozygotes in gnomad4. There are 107 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 5 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
COL11A2	NM_080680.3 linkuse as main transcript	c.1612-10G>C		splice_polypyrimidine_tract_variant, intron_variant		ENST00000341947.7

Ensembl

Gene	Transcript	HGVSc	Effect	TSL	MANE	Appris
COL11A2	ENST00000341947.7 linkuse as main transcript	c.1612-10G>C	splice_polypyrimidine_tract_variant, intron_variant	5	NM_080680.3	P4
COL11A2	ENST00000361917.6 linkuse as main transcript	c.239-10G>C	splice_polypyrimidine_tract_variant, intron_variant	5
COL11A2	ENST00000374708.8 linkuse as main transcript	c.1354-10G>C	splice_polypyrimidine_tract_variant, intron_variant	5		A1

Frequencies

GnomAD3 genomes

AF:

0.00116

AC:

176

AN:

152070

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000966

Gnomad AMI

AF:

0.0132

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000387

Gnomad SAS

AF:

0.00249

Gnomad FIN

AF:

0.00433

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00137

Gnomad OTH

AF:

0.00144

GnomAD3 exomes

AF:

0.00120

AC:

302

AN:

250758

Hom.:

AF XY:

0.00133

AC XY:

181

AN XY:

135684

show subpopulations

Gnomad AFR exome

AF:

0.0000619

Gnomad AMR exome

AF:

0.000376

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00173

Gnomad FIN exome

AF:

0.00338

Gnomad NFE exome

AF:

0.00139

Gnomad OTH exome

AF:

0.000653

GnomAD4 exome

AF:

0.00121

AC:

1764

AN:

1461858

Hom.:

Cov.:

AF XY:

0.00125

AC XY:

911

AN XY:

727234

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.000335

Gnomad4 ASJ exome

AF:

0.0000765

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00162

Gnomad4 FIN exome

AF:

0.00272

Gnomad4 NFE exome

AF:

0.00126

Gnomad4 OTH exome

AF:

0.000745

GnomAD4 genome

AF:

0.00116

AC:

176

AN:

152188

Hom.:

Cov.:

AF XY:

0.00144

AC XY:

107

AN XY:

74432

show subpopulations

Gnomad4 AFR

AF:

0.0000963

Gnomad4 AMR

AF:

0.000262

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000388

Gnomad4 SAS

AF:

0.00249

Gnomad4 FIN

AF:

0.00433

Gnomad4 NFE

AF:

0.00137

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.00104

Hom.:

Bravo

AF:

0.00100

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:10

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Benign:4

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 22, 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	Oct 24, 2017	c.1612-10G>C in intron 16 of COL11A2: This variant is not expected to have clini cal significance because it has been identified in 0.34% (88/25742) of Finnish c hromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstit ute.org; dbSNP rs182657680). -
Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jun 26, 2015	- -

not provided

Benign:3

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 29, 2024	- -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Likely benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -

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

- -

Connective tissue disorder

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Center for Human Genetics, Inc, Center for Human Genetics, Inc

Nov 01, 2016

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.73

CADD

Benign

7.6

DANN

Benign

0.70

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00088

dbscSNV1_RF

Benign

0.0020

SpliceAI score (max)

0.040

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