chr17-50184186-G-C
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Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_000088.4(COL1A1):c.*1316C>G variant causes a 3 prime UTR change. The variant allele was found at a frequency of 0.0000177 in 226,210 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 Uncertain significance (★).
Frequency
Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)
Exomes 𝑓: 0.000041 ( 0 hom. )
Consequence
COL1A1
NM_000088.4 3_prime_UTR
NM_000088.4 3_prime_UTR
Scores
2
Clinical Significance
Conservation
PhyloP100: 5.60
Genes affected
COL1A1 (HGNC:2197): (collagen type I alpha 1 chain) This gene encodes the pro-alpha1 chains 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 VIIA, Ehlers-Danlos syndrome Classical type, Caffey Disease and idiopathic osteoporosis. Reciprocal translocations between chromosomes 17 and 22, where this gene and the gene for platelet-derived growth factor beta are located, are associated with a particular type of skin tumor called dermatofibrosarcoma protuberans, resulting from unregulated expression of the growth factor. Two 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 Uncertain_significance. Variant got 0 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.45).
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| COL1A1 | NM_000088.4 | c.*1316C>G | 3_prime_UTR_variant | 51/51 | ENST00000225964.10 | NP_000079.2 | ||
| COL1A1 | XM_005257058.5 | c.*1316C>G | 3_prime_UTR_variant | 49/49 | XP_005257115.2 | |||
| COL1A1 | XM_005257059.5 | c.*1316C>G | 3_prime_UTR_variant | 38/38 | XP_005257116.2 | |||
| COL1A1 | XM_011524341.2 | c.*1316C>G | 3_prime_UTR_variant | 48/48 | XP_011522643.1 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| COL1A1 | ENST00000225964.10 | c.*1316C>G | 3_prime_UTR_variant | 51/51 | 1 | NM_000088.4 | ENSP00000225964 | P1 |
Frequencies
GnomAD3 genomes 0.00000657 AC: 1AN: 152188Hom.: 0 Cov.: 31
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GnomAD4 exome AF: 0.0000405 AC: 3AN: 74022Hom.: 0 Cov.: 0 AF XY: 0.0000291 AC XY: 1AN XY: 34312
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GnomAD4 genome 0.00000657 AC: 1AN: 152188Hom.: 0 Cov.: 31 AF XY: 0.0000135 AC XY: 1AN XY: 74348
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:3
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Osteogenesis imperfecta Uncertain:1
| Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Mar 30, 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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. - |
Ehlers-Danlos syndrome, arthrochalasia type Uncertain:1
| Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Mar 30, 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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. - |
Infantile cortical hyperostosis Uncertain:1
| Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Mar 30, 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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. - |
Computational scores
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BayesDel_noAF
Benign
CADD
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DANN
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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