rs41272027
Variant summary
Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1
The NM_001844.5(COL2A1):c.2625+9C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00458 in 1,596,248 control chromosomes in the GnomAD database, including 331 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).
Frequency
Genomes: 𝑓 0.024 ( 186 hom., cov: 32)
Exomes 𝑓: 0.0025 ( 145 hom. )
Consequence
COL2A1
NM_001844.5 intron
NM_001844.5 intron
Scores
2
Clinical Significance
Conservation
PhyloP100: -1.09
Genes affected
COL2A1 (HGNC:2200): (collagen type II alpha 1 chain) This gene encodes the alpha-1 chain of type II collagen, a fibrillar collagen found in cartilage and the vitreous humor of the eye. Mutations in this gene are associated with achondrogenesis, chondrodysplasia, early onset familial osteoarthritis, SED congenita, Langer-Saldino achondrogenesis, Kniest dysplasia, Stickler syndrome type I, and spondyloepimetaphyseal dysplasia Strudwick type. In addition, defects in processing chondrocalcin, a calcium binding protein that is the C-propeptide of this collagen molecule, are also associated with chondrodysplasia. There are two transcripts identified for this gene. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -20 ACMG points.
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.85).
BP6
?
Variant 12-47980545-G-A is Benign according to our data. Variant chr12-47980545-G-A is described in ClinVar as [Benign]. Clinvar id is 258230.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr12-47980545-G-A is described in Lovd as [Benign].
BA1
?
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0807 is higher than 0.05.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
COL2A1 | NM_001844.5 | c.2625+9C>T | intron_variant | ENST00000380518.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
COL2A1 | ENST00000380518.8 | c.2625+9C>T | intron_variant | 1 | NM_001844.5 | P1 | |||
COL2A1 | ENST00000337299.7 | c.2418+9C>T | intron_variant | 1 | |||||
COL2A1 | ENST00000493991.5 | n.1711+9C>T | intron_variant, non_coding_transcript_variant | 2 |
Frequencies
GnomAD3 genomes ? AF: 0.0242 AC: 3677AN: 152158Hom.: 186 Cov.: 32
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GnomAD3 exomes AF: 0.00597 AC: 1329AN: 222476Hom.: 63 AF XY: 0.00430 AC XY: 518AN XY: 120430
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GnomAD4 exome AF: 0.00252 AC: 3632AN: 1443972Hom.: 145 Cov.: 32 AF XY: 0.00217 AC XY: 1554AN XY: 716852
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ClinVar
Significance: Benign
Submissions summary: Benign:8
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not specified Benign:4
Benign, no assertion criteria provided | clinical testing | Genome Diagnostics Laboratory, Amsterdam University Medical Center | - | - - |
Benign, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | - | - - |
Benign, no assertion criteria provided | clinical testing | Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+ | - | - - |
Benign, criteria provided, single submitter | clinical testing | GeneDx | Oct 10, 2016 | 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. - |
Stickler syndrome type 1 Benign:1
Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 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 benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. - |
not provided Benign:1
Benign, criteria provided, single submitter | clinical testing | Invitae | Feb 01, 2024 | - - |
Type II Collagenopathies Benign:1
Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 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 benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. - |
Connective tissue disorder Benign:1
Benign, criteria provided, single submitter | clinical testing | Genome Diagnostics Laboratory, The Hospital for Sick Children | Sep 02, 2021 | - - |
Computational scores
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BayesDel_noAF
Benign
Cadd
Benign
Dann
Benign
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at