rs1171968124
Positions:
Variant summary
Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1PM2PP2PP3_Moderate
The NM_000088.4(COL1A1):c.1456G>A(p.Glu486Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000707 in 1,414,866 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 7.1e-7 ( 0 hom. )
Consequence
COL1A1
NM_000088.4 missense
NM_000088.4 missense
Scores
8
5
3
Clinical Significance
Conservation
PhyloP100: 7.40
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]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 7 ACMG points.
PM1
?
In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 4 uncertain in NM_000088.4
PM2
?
Very rare variant in population databases, with high coverage;
PP2
?
Missense variant where missense usually causes diseases, COL1A1
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.848
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
COL1A1 | NM_000088.4 | c.1456G>A | p.Glu486Lys | missense_variant | 21/51 | ENST00000225964.10 | |
COL1A1 | XM_011524341.2 | c.1258G>A | p.Glu420Lys | missense_variant | 18/48 | ||
COL1A1 | XM_005257058.5 | c.1456G>A | p.Glu486Lys | missense_variant | 21/49 | ||
COL1A1 | XM_005257059.5 | c.957+1588G>A | intron_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
COL1A1 | ENST00000225964.10 | c.1456G>A | p.Glu486Lys | missense_variant | 21/51 | 1 | NM_000088.4 | P1 | |
COL1A1 | ENST00000471344.1 | n.400G>A | non_coding_transcript_exon_variant | 5/8 | 2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome AF: 7.07e-7 AC: 1AN: 1414866Hom.: 0 Cov.: 35 AF XY: 0.00 AC XY: 0AN XY: 699972
GnomAD4 exome
AF:
AC:
1
AN:
1414866
Hom.:
Cov.:
35
AF XY:
AC XY:
0
AN XY:
699972
Gnomad4 AFR exome
AF:
Gnomad4 AMR exome
AF:
Gnomad4 ASJ exome
AF:
Gnomad4 EAS exome
AF:
Gnomad4 SAS exome
AF:
Gnomad4 FIN exome
AF:
Gnomad4 NFE exome
AF:
Gnomad4 OTH exome
AF:
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Osteogenesis imperfecta type I Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Nov 29, 2022 | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on COL1A1 protein function. ClinVar contains an entry for this variant (Variation ID: 547227). This variant has not been reported in the literature in individuals affected with COL1A1-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 486 of the COL1A1 protein (p.Glu486Lys). - |
Connective tissue disorder Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Center for Human Genetics, Inc, Center for Human Genetics, Inc | Nov 01, 2016 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Pathogenic
D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D
MetaSVM
Pathogenic
D
MutationTaster
Benign
D
PrimateAI
Uncertain
T
PROVEAN
Benign
N
REVEL
Pathogenic
Sift
Benign
T
Sift4G
Uncertain
D
Vest4
MutPred
Gain of methylation at E486 (P = 0.0071);
MVP
MPC
ClinPred
D
GERP RS
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at