rs748934203
Variant summary
Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PM1PM2PM5PP2PP3_ModeratePP5
The NM_000138.5(FBN1):c.8039G>A(p.Arg2680His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000248 in 1,613,162 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R2680C) has been classified as Likely pathogenic.
Frequency
Consequence
NM_000138.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 10 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
FBN1 | NM_000138.5 | c.8039G>A | p.Arg2680His | missense_variant | 64/66 | ENST00000316623.10 | |
FBN1 | NM_001406716.1 | c.8039G>A | p.Arg2680His | missense_variant | 63/65 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
FBN1 | ENST00000316623.10 | c.8039G>A | p.Arg2680His | missense_variant | 64/66 | 1 | NM_000138.5 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0000131 AC: 2AN: 152182Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.00000401 AC: 1AN: 249436Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 134990
GnomAD4 exome AF: 0.00000137 AC: 2AN: 1460980Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2AN XY: 726834
GnomAD4 genome ? AF: 0.0000131 AC: 2AN: 152182Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1AN XY: 74338
ClinVar
Submissions by phenotype
Marfan syndrome;C4707243:Familial thoracic aortic aneurysm and aortic dissection Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Invitae | Jul 13, 2022 | In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. 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) performed at Invitae indicates that this missense variant is expected to disrupt FBN1 protein function. ClinVar contains an entry for this variant (Variation ID: 527153). This missense change has been observed in individuals with clinical features of FBN1-related conditions (Invitae). This variant is present in population databases (rs748934203, gnomAD 0.0009%). This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 2680 of the FBN1 protein (p.Arg2680His). - |
Familial thoracic aortic aneurysm and aortic dissection Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario | Feb 14, 2019 | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at