rs764654925
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PM5PP2PP3
The NM_001042492.3(NF1):c.4495A>C(p.Ile1499Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★★). Another nucleotide change resulting in same amino acid change has been previously reported as Uncertain significancein ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I1499V) has been classified as Uncertain significance.
Frequency
Consequence
NM_001042492.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
NF1 | NM_001042492.3 | c.4495A>C | p.Ile1499Leu | missense_variant | 34/58 | ENST00000358273.9 | |
NF1 | NM_000267.3 | c.4432A>C | p.Ile1478Leu | missense_variant | 33/57 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
NF1 | ENST00000358273.9 | c.4495A>C | p.Ile1499Leu | missense_variant | 34/58 | 1 | NM_001042492.3 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD4 exome Cov.: 31
GnomAD4 genome ? Cov.: 32
ClinVar
Submissions by phenotype
Neurofibromatosis, type 1 Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jul 06, 2019 | 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: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with NF1-related conditions. ClinVar contains an entry for this variant (Variation ID: 480184). This variant is not present in population databases (ExAC no frequency). This sequence change replaces isoleucine with leucine at codon 1478 of the NF1 protein (p.Ile1478Leu). The isoleucine residue is moderately conserved and there is a small physicochemical difference between isoleucine and leucine. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Mar 15, 2022 | - - |
Hereditary cancer-predisposing syndrome;CN230736:Cardiovascular phenotype Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Oct 23, 2023 | The p.I1478L variant (also known as c.4432A>C), located in coding exon 33 of the NF1 gene, results from an A to C substitution at nucleotide position 4432. The isoleucine at codon 1478 is replaced by leucine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at