COL11A1 p.Asn680Asn

Variant names:

• chr1-103002749-T-T
• NM_001854.4:c.

Your query was ambiguous. Multiple possible variants found:

• chr1-103002750--
• chr1-103002750-G-A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001854.4(COL11A1):​c. variant causes a splice region, exon region change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: COL11A1 NM_001854.4 splice_region, exon_region
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.37
• Publications: 0 publications found

Genes affected

COL11A1 (HGNC:2186): (collagen type XI alpha 1 chain) This gene encodes one of the two alpha chains of type XI collagen, a minor fibrillar collagen. Type XI collagen is a heterotrimer but the third alpha chain is a post-translationally modified alpha 1 type II chain. Mutations in this gene are associated with type II Stickler syndrome and with Marshall syndrome. A single-nucleotide polymorphism in this gene is also associated with susceptibility to lumbar disc herniation. Multiple transcript variants have been identified for this gene. [provided by RefSeq, Nov 2009]

COL11A1 Gene-Disease associations (from GenCC):

• Marshall syndrome

  Inheritance: AD, AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Orphanet, Genomics England PanelApp
• Stickler syndrome type 2

  Inheritance: AD, AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, G2P, Orphanet
• fibrochondrogenesis 1

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• hearing loss, autosomal dominant 37

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• autosomal dominant nonsyndromic hearing loss

  Inheritance: AD Classification: MODERATE Submitted by: ClinGen
• autosomal dominant myopia-midfacial retrusion-sensorineural hearing loss-rhizomelic dysplasia syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• fibrochondrogenesis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• autosomal recessive Stickler syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001854.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	COL11A1	NM_001854.4	MANE Select	c.		splice_region exon_region	Exon 22 of 67	NP_001845.3
	COL11A1	NM_080629.3		c.		splice_region exon_region	Exon 22 of 67	NP_542196.2	P12107-2
	COL11A1	NM_001190709.2		c.		splice_region exon_region	Exon 21 of 66	NP_001177638.1	P12107-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	COL11A1	ENST00000370096.9	TSL:1 MANE Select	c.		splice_region exon_region	Exon 22 of 67	ENSP00000359114.3	P12107-1
	COL11A1	ENST00000512756.5	TSL:1	c.		splice_region exon_region	Exon 20 of 65	ENSP00000426533.1	P12107-4
	COL11A1	ENST00000635193.1	TSL:1	n.		splice_region exon_region	Exon 18 of 64	ENSP00000489428.1	A0A0U1RRA7

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		2.4

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr1-103468305;