6-33170105-A-G

Position:

chr6-33170105-A-G

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_080680.3(COL11A2):c.3583-5T>C variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000347 in 1,612,910 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0020 ( 3 hom., cov: 32)

Exomes 𝑓: 0.00018 ( 1 hom. )

Consequence

COL11A2
NM_080680.3 splice_region, intron

Scores

Splicing: ADA: 0.0002240

Clinical Significance

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

Conservation

PhyloP100: 2.38

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:

COL11A2 (HGNC:):

COL11A2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.82).

BP6

Variant 6-33170105-A-G is Benign according to our data. Variant chr6-33170105-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 356391.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr6-33170105-A-G is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00197 (299/152150) while in subpopulation AFR AF= 0.0069 (286/41474). AF 95% confidence interval is 0.00624. There are 3 homozygotes in gnomad4. There are 135 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 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.3583-5T>C		splice_region_variant, intron_variant		ENST00000341947.7	NP_542411.2	P13942A0A0C4DFS1

Ensembl

Gene	Transcript	HGVSc	Effect	TSL	MANE	Protein	UniProt
COL11A2	ENST00000341947.7 linkuse as main transcript	c.3583-5T>C	splice_region_variant, intron_variant	5	NM_080680.3	ENSP00000339915.2	A0A0C4DFS1
COL11A2	ENST00000374708.8 linkuse as main transcript	c.3325-5T>C	splice_region_variant, intron_variant	5		ENSP00000363840.4	Q4VXY6
COL11A2	ENST00000477772.1 linkuse as main transcript	n.273-4289T>C	intron_variant	2

Frequencies

GnomAD3 genomes

AF:

0.00196

AC:

298

AN:

152032

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00692

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000589

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:

0.0000147

Gnomad OTH

AF:

0.000957

GnomAD3 exomes

AF:

0.000449

AC:

111

AN:

246968

Hom.:

AF XY:

0.000305

AC XY:

AN XY:

134514

show subpopulations

Gnomad AFR exome

AF:

0.00650

Gnomad AMR exome

AF:

0.000261

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000902

Gnomad OTH exome

AF:

0.000329

GnomAD4 exome

AF:

0.000178

AC:

260

AN:

1460760

Hom.:

Cov.:

AF XY:

0.000157

AC XY:

114

AN XY:

726700

show subpopulations

Gnomad4 AFR exome

AF:

0.00681

Gnomad4 AMR exome

AF:

0.000201

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.000315

GnomAD4 genome

AF:

0.00197

AC:

299

AN:

152150

Hom.:

Cov.:

AF XY:

0.00182

AC XY:

135

AN XY:

74370

show subpopulations

Gnomad4 AFR

AF:

0.00690

Gnomad4 AMR

AF:

0.000588

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000947

Alfa

AF:

0.00119

Hom.:

Bravo

AF:

0.00207

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:13

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:6

Likely benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Dec 05, 2018	- -
Likely benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Likely benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	May 02, 2023	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 29, 2024	- -
Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, Amsterdam University Medical Center	-	- -

not specified

Benign:2

Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Oct 05, 2017	c.3583-5T>C in intron 48 of COL11A2: This variant is not expected to have clinic al significance because it has been identified in 0.7% (157/23038) of African ch romosomes including 1 homozygote by the Genome Aggregation Database (gnomAD, htt p://gnomad.broadinstitute.org; dbSNP rs183536190). ACMG/AMP Criteria applied: BA 1, BP7 (Richards 2015). -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 20, 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. -

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

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. -

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

Connective tissue disorder

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Genome Diagnostics Laboratory, The Hospital for Sick Children

May 01, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.82

CADD

Benign

DANN

Benign

0.77

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00022

dbscSNV1_RF

Benign

0.032

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