9-95446958-T-A
Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP2
The NM_000264.5(PTCH1):c.4298A>T(p.Gln1433Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,884 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q1433H) has been classified as Uncertain significance.
Frequency
Consequence
NM_000264.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 3 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
PTCH1 | NM_000264.5 | c.4298A>T | p.Gln1433Leu | missense_variant | 23/24 | ENST00000331920.11 | |
PTCH1 | NM_001083603.3 | c.4295A>T | p.Gln1432Leu | missense_variant | 23/24 | ENST00000437951.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
PTCH1 | ENST00000331920.11 | c.4298A>T | p.Gln1433Leu | missense_variant | 23/24 | 5 | NM_000264.5 | A2 | |
PTCH1 | ENST00000437951.6 | c.4295A>T | p.Gln1432Leu | missense_variant | 23/24 | 5 | NM_001083603.3 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD4 exome AF: 0.00000137 AC: 2AN: 1461884Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1AN XY: 727242
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Basal cell carcinoma, susceptibility to, 1 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Baylor Genetics | Aug 10, 2023 | - - |
Gorlin syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Oct 28, 2023 | This sequence change replaces glutamine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 1433 of the PTCH1 protein (p.Gln1433Leu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with PTCH1-related conditions. ClinVar contains an entry for this variant (Variation ID: 453892). 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 not expected to disrupt PTCH1 protein function with a negative predictive value of 95%. 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. - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Sep 29, 2022 | Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge - |
Hereditary cancer-predisposing syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Feb 27, 2024 | The p.Q1433L variant (also known as c.4298A>T), located in coding exon 23 of the PTCH1 gene, results from an A to T substitution at nucleotide position 4298. The glutamine at codon 1433 is replaced by leucine, an amino acid with dissimilar properties. This amino acid position is conserved. 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