chr19-8066097-C-G
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_032447.5(FBN3):āc.8252G>Cā(p.Arg2751Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000123 in 1,461,166 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (ā ā ). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R2751C) has been classified as Uncertain significance.
Frequency
Consequence
NM_032447.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
FBN3 | NM_032447.5 | c.8252G>C | p.Arg2751Pro | missense_variant | 64/64 | ENST00000600128.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
FBN3 | ENST00000600128.6 | c.8252G>C | p.Arg2751Pro | missense_variant | 64/64 | 1 | NM_032447.5 | ||
FBN3 | ENST00000270509.6 | c.8252G>C | p.Arg2751Pro | missense_variant | 63/63 | 1 | |||
FBN3 | ENST00000601739.5 | c.8252G>C | p.Arg2751Pro | missense_variant | 64/64 | 1 | |||
FBN3 | ENST00000651877.1 | c.8378G>C | p.Arg2793Pro | missense_variant | 64/64 | P1 |
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD3 exomes AF: 0.00000800 AC: 2AN: 250056Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135340
GnomAD4 exome AF: 0.0000123 AC: 18AN: 1461166Hom.: 0 Cov.: 31 AF XY: 0.00000963 AC XY: 7AN XY: 726904
GnomAD4 genome Cov.: 33
ClinVar
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Dec 20, 2023 | The c.8252G>C (p.R2751P) alteration is located in exon 63 (coding exon 63) of the FBN3 gene. This alteration results from a G to C substitution at nucleotide position 8252, causing the arginine (R) at amino acid position 2751 to be replaced by a proline (P). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Mar 25, 2022 | This sequence change replaces arginine, which is basic and polar, with proline, which is neutral and non-polar, at codon 2751 of the FBN3 protein (p.Arg2751Pro). 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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Not Available"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Not Available"). This variant has not been reported in the literature in individuals affected with FBN3-related conditions. This variant is present in population databases (rs764446097, gnomAD 0.002%). - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at