rs368837694
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Variant summary
Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_StrongBP6_Very_Strong
The NM_000089.4(COL1A2):c.2025+9A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000196 in 1,611,110 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).
Frequency
Genomes: 𝑓 0.000086 ( 0 hom., cov: 31)
Exomes 𝑓: 0.00021 ( 0 hom. )
Consequence
COL1A2
NM_000089.4 intron
NM_000089.4 intron
Scores
2
Clinical Significance
Conservation
PhyloP100: 1.01
Genes affected
COL1A2 (HGNC:2198): (collagen type I alpha 2 chain) This gene encodes the pro-alpha2 chain of type I collagen whose triple helix comprises two alpha1 chains and one alpha2 chain. Type I is a fibril-forming collagen found in most connective tissues and is abundant in bone, cornea, dermis and tendon. Mutations in this gene are associated with osteogenesis imperfecta types I-IV, Ehlers-Danlos syndrome type VIIB, recessive Ehlers-Danlos syndrome Classical type, idiopathic osteoporosis, and atypical Marfan syndrome. Symptoms associated with mutations in this gene, however, tend to be less severe than mutations in the gene for the alpha1 chain of type I collagen (COL1A1) reflecting the different role of alpha2 chains in matrix integrity. Three transcripts, resulting from the use of alternate polyadenylation signals, have been identified for this gene. [provided by R. Dalgleish, Feb 2008]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -12 ACMG points.
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.62).
BP6
?
Variant 7-94418561-A-G is Benign according to our data. Variant chr7-94418561-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 360960.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
COL1A2 | NM_000089.4 | c.2025+9A>G | intron_variant | ENST00000297268.11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
COL1A2 | ENST00000297268.11 | c.2025+9A>G | intron_variant | 1 | NM_000089.4 | P1 | |||
COL1A2 | ENST00000461525.5 | n.114+9A>G | intron_variant, non_coding_transcript_variant | 1 | |||||
COL1A2 | ENST00000473573.5 | n.362+9A>G | intron_variant, non_coding_transcript_variant | 2 | |||||
COL1A2 | ENST00000497316.5 | n.422+9A>G | intron_variant, non_coding_transcript_variant | 2 |
Frequencies
GnomAD3 genomes ? AF: 0.0000859 AC: 13AN: 151290Hom.: 0 Cov.: 31
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GnomAD3 exomes AF: 0.000180 AC: 45AN: 249394Hom.: 0 AF XY: 0.000223 AC XY: 30AN XY: 134654
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GnomAD4 exome AF: 0.000207 AC: 302AN: 1459820Hom.: 0 Cov.: 30 AF XY: 0.000219 AC XY: 159AN XY: 726100
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ClinVar
Significance: Benign/Likely benign
Submissions summary: Benign:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Osteogenesis imperfecta Benign:1
Likely 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 likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. - |
COL1A2-related disorder Benign:1
Likely benign, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | Jul 07, 2022 | This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). - |
Ehlers-danlos syndrome, arthrochalasia type, 2 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. - |
Osteogenesis imperfecta type I;C0268335:Ehlers-Danlos syndrome, classic type, 1 Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Jan 25, 2024 | - - |
Computational scores
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Name
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Splicing
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Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at