6-33173522-G-T

Position:

• chr6-33173522-G-T

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PS1_Moderate PM2 PP2 PP3 PP5

The NM_080680.3(COL11A2):​c.2662C>A​(p.Pro888Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000688 in 1,453,026 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Another nucleotide change resulting in same amino acid change has been previously reported as Likely pathogenicin UniProt.

• Frequency:
  • Genomes: not found (cov: 26)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: COL11A2 NM_080680.3 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 9.83

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 (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PS1: Transcript NM_080680.3 (COL11A2) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in UniProt
• PM2: Very rare variant in population databases, with high coverage
• 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.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.766
• PP5: Variant 6-33173522-G-T is Pathogenic according to our data. Variant chr6-33173522-G-T is described in ClinVar as [Pathogenic]. Clinvar id is 218349.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr6-33173522-G-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COL11A2	NM_080680.3	c.2662C>A	p.Pro888Thr	missense_variant	36/66	ENST00000341947.7	NP_542411.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
COL11A2	ENST00000341947.7	c.2662C>A	p.Pro888Thr	missense_variant	36/66	5	NM_080680.3	ENSP00000339915.2
COL11A2	ENST00000374708.8	c.2404C>A	p.Pro802Thr	missense_variant	34/64	5		ENSP00000363840.4
COL11A2	ENST00000361917.6	c.1234C>A	p.Pro412Thr	missense_variant	23/24	5		ENSP00000355123.2
COL11A2	ENST00000477772.1	n.272+3487C>A		intron_variant		2

Frequencies

GnomAD3 genomes Cov.: 26

GnomAD4 exome AF: 6.88e-7 AC: 1 AN: 1453026 Hom.: 0 Cov.: 39 AF XY: 0.00000138 AC XY: 1 AN XY: 722706

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.00

Gnomad4 OTH exome AF: 0.0000167

GnomAD4 genome Cov.: 26

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Autosomal recessive nonsyndromic hearing loss 53 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jan 30, 2015

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.082
BayesDel_addAF	Benign	0.0081	T
BayesDel_noAF	Benign	-0.23
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Benign	0.081	T;T;.
Eigen	Uncertain	0.40
Eigen_PC	Uncertain	0.45
FATHMM_MKL	Uncertain	0.96	D
M_CAP	Uncertain	0.15	D
MetaRNN	Pathogenic	0.77	D;D;D
MetaSVM	Benign	-0.80	T
PrimateAI	Uncertain	0.78	T
PROVEAN	Pathogenic	-5.4	D;D;D
REVEL	Pathogenic	0.75
Sift	Uncertain	0.023	D;D;D
Sift4G	Benign	0.077	T;T;T
Vest4		0.66
MutPred		0.39		.;Gain of phosphorylation at P888 (P = 0.0069);.;
MVP		0.63
MPC		0.99
ClinPred		0.99	D
GERP RS		4.0
gMVP		0.29

Splicing

Name	Calibrated prediction	Score	Prediction
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

Other links and lift over

dbSNP: rs864309523; hg19: chr6-33141299;