rs774219740
Variant summary
Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2
The ENST00000372192.4(PTCH2):āc.229A>Gā(p.Ile77Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000233 in 1,461,888 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (ā ā ). Synonymous variant affecting the same amino acid position (i.e. I77I) has been classified as Likely benign.
Frequency
Consequence
ENST00000372192.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -8 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
PTCH2 | NM_003738.5 | c.229A>G | p.Ile77Val | missense_variant | 2/22 | ENST00000372192.4 | NP_003729.3 | |
PTCH2 | NM_001166292.2 | c.229A>G | p.Ile77Val | missense_variant | 2/23 | NP_001159764.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
PTCH2 | ENST00000372192.4 | c.229A>G | p.Ile77Val | missense_variant | 2/22 | 1 | NM_003738.5 | ENSP00000361266 | P2 | |
PTCH2 | ENST00000447098.6 | c.229A>G | p.Ile77Val | missense_variant | 2/23 | 1 | ENSP00000389703 | A2 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 exomes AF: 0.00000795 AC: 2AN: 251482Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135920
GnomAD4 exome AF: 0.0000233 AC: 34AN: 1461888Hom.: 0 Cov.: 33 AF XY: 0.0000193 AC XY: 14AN XY: 727244
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Aug 16, 2022 | The c.229A>G (p.I77V) alteration is located in exon 2 (coding exon 2) of the PTCH2 gene. This alteration results from a A to G substitution at nucleotide position 229, causing the isoleucine (I) at amino acid position 77 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Gorlin syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Sep 10, 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) performed at Invitae indicates that this missense variant is not expected to disrupt PTCH2 protein function. ClinVar contains an entry for this variant (Variation ID: 453932). This variant has not been reported in the literature in individuals affected with PTCH2-related conditions. This variant is present in population databases (rs774219740, gnomAD 0.002%). This sequence change replaces isoleucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 77 of the PTCH2 protein (p.Ile77Val). - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at