1-103079209-C-G

Variant names:

• chr1-103079209-C-G
• rs1337185
• NM_001854.4:c.275-338G>C

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001854.4(COL11A1):​c.275-338G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.152 in 152,016 control chromosomes in the GnomAD database, including 1,888 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.15 (1888 hom., cov: 32)
• Consequence: COL11A1 NM_001854.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.55
• Publications: 11 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: Orphanet, Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp
• Stickler syndrome type 2

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

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

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
• 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: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.99).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.157 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COL11A1	NM_001854.4	c.275-338G>C		intron_variant	Intron 2 of 66	ENST00000370096.9	NP_001845.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
COL11A1	ENST00000370096.9	c.275-338G>C		intron_variant	Intron 2 of 66	1	NM_001854.4	ENSP00000359114.3

Frequencies

GnomAD3 genomes AF: 0.152 AC: 23094 AN: 151898 Hom.: 1881 Cov.: 32

Gnomad AFR AF: 0.153

Gnomad AMI AF: 0.0769

Gnomad AMR AF: 0.159

Gnomad ASJ AF: 0.139

Gnomad EAS AF: 0.00906

Gnomad SAS AF: 0.0911

Gnomad FIN AF: 0.205

Gnomad MID AF: 0.142

Gnomad NFE AF: 0.159

Gnomad OTH AF: 0.136

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.152 AC: 23130 AN: 152016 Hom.: 1888 Cov.: 32 AF XY: 0.152 AC XY: 11321 AN XY: 74304

African (AFR) AF: 0.154 AC: 6372 AN: 41506

American (AMR) AF: 0.159 AC: 2419 AN: 15258

Ashkenazi Jewish (ASJ) AF: 0.139 AC: 483 AN: 3466

East Asian (EAS) AF: 0.00908 AC: 47 AN: 5174

South Asian (SAS) AF: 0.0909 AC: 439 AN: 4828

European-Finnish (FIN) AF: 0.205 AC: 2161 AN: 10554

Middle Eastern (MID) AF: 0.146 AC: 43 AN: 294

European-Non Finnish (NFE) AF: 0.159 AC: 10810 AN: 67912

Other (OTH) AF: 0.135 AC: 286 AN: 2114

Alfa AF: 0.0817 Hom.: 112

Bravo AF: 0.151

Asia WGS AF: 0.0630 AC: 219 AN: 3474

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.99
CADD	Benign	0.013
DANN	Benign	0.35
PhyloP100		-2.5
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs1337185; hg19: chr1-103544765;