chr6-33176291-T-A

Position:

chr6-33176291-T-A

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 1P and 7B. PP2BP4_ModerateBP6BS1

The NM_080680.3(COL11A2):c.2182A>T(p.Ile728Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000198 in 1,607,274 control chromosomes in the GnomAD database, including 1 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 0.00013 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00020 ( 1 hom. )

Consequence

COL11A2
NM_080680.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:3

Conservation

PhyloP100: 1.74

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 Likely_benign. Variant got -6 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=0.10636145).

BP6

Variant 6-33176291-T-A is Benign according to our data. Variant chr6-33176291-T-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 356402.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Uncertain_significance=5}. Variant chr6-33176291-T-A is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population amr. gnomad4_exome allele frequency = 0.000205 (298/1455104) while in subpopulation AMR AF= 0.000846 (37/43756). AF 95% confidence interval is 0.00063. There are 1 homozygotes in gnomad4_exome. There are 141 alleles in male gnomad4_exome subpopulation. Median coverage is 34. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COL11A2	NM_080680.3 linkuse as main transcript	c.2182A>T	p.Ile728Phe	missense_variant	28/66	ENST00000341947.7	NP_542411.2	P13942A0A0C4DFS1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
COL11A2	ENST00000341947.7 linkuse as main transcript	c.2182A>T	p.Ile728Phe	missense_variant	28/66	5	NM_080680.3	ENSP00000339915.2	A0A0C4DFS1
COL11A2	ENST00000374708.8 linkuse as main transcript	c.1924A>T	p.Ile642Phe	missense_variant	26/64	5		ENSP00000363840.4	Q4VXY6
COL11A2	ENST00000361917.6 linkuse as main transcript	c.754A>T	p.Ile252Phe	missense_variant	15/24	5		ENSP00000355123.2	H0YIS1
COL11A2	ENST00000477772.1 linkuse as main transcript	n.272+718A>T		intron_variant		2

Frequencies

GnomAD3 genomes

AF:

0.000132

AC:

AN:

152052

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000655

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:

0.000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000174

AC:

AN:

235744

Hom.:

AF XY:

0.000156

AC XY:

AN XY:

128314

show subpopulations

Gnomad AFR exome

AF:

0.000141

Gnomad AMR exome

AF:

0.000604

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:

0.000133

Gnomad OTH exome

AF:

0.000854

GnomAD4 exome

AF:

0.000205

AC:

298

AN:

1455104

Hom.:

Cov.:

AF XY:

0.000195

AC XY:

141

AN XY:

723312

show subpopulations

Gnomad4 AFR exome

AF:

0.0000598

Gnomad4 AMR exome

AF:

0.000846

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:

0.000209

Gnomad4 OTH exome

AF:

0.000449

GnomAD4 genome

AF:

0.000131

AC:

AN:

152170

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74384

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000181

Hom.:

Bravo

AF:

0.000317

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000519

AC:

ExAC

AF:

0.000169

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:6Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Dec 17, 2024	In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	May 01, 2023	COL11A2: PM2:Supporting, PP3 -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 18, 2024	- -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Dec 22, 2016

The p.Ile728Phe variant in COL11A2 has not been previously reported in individua ls with hearing loss, but has been identified in 0.14% (10/7366) of Latino chrom osomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org ; dbSNP rs188490457). Although this variant has been seen in the general populat ion, its frequency is not high enough to rule out a pathogenic role. Computation al prediction tools and conservation analysis suggest that the p.Ile728Phe varia nt may impact the protein, though this information is not predictive enough to d etermine pathogenicity. In summary, the clinical significance of the p.Ile728Phe variant is uncertain. -

Otospondylomegaepiphyseal dysplasia, autosomal recessive

Uncertain:1

Uncertain significance, 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, 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. -

COL11A2-related disorder

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Aug 29, 2024

The COL11A2 c.2182A>T variant is predicted to result in the amino acid substitution p.Ile728Phe. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.059% of alleles in individuals of Latino descent in gnomAD. Although we suspect that this variant may be benign, at this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Fibrochondrogenesis 2

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 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

AlphaMissense

Benign

0.25

BayesDel_addAF

Benign

-0.032

BayesDel_noAF

Uncertain

0.080

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.077

T;T;.

Eigen

Uncertain

0.21

Eigen_PC

Uncertain

0.23

FATHMM_MKL

Uncertain

0.90

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.11

T;T;T

MetaSVM

Uncertain

0.36

PrimateAI

Uncertain

0.72

PROVEAN

Uncertain

-2.9

D;D;D

REVEL

Pathogenic

0.69

Sift

Benign

0.041

D;T;T

Sift4G

Uncertain

0.044

D;D;D

Vest4

0.55

MVP

0.69

MPC

0.85

ClinPred

0.11

GERP RS

4.9

gMVP

0.93

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

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