rs45535032
Variant summary
Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_ModerateBP6_Very_StrongBS2
The NM_000264.5(PTCH1):c.4171C>T(p.Arg1391Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000905 in 1,613,870 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1391Q) has been classified as Likely benign.
Frequency
Consequence
NM_000264.5 missense
Scores
Clinical Significance
Conservation
Publications
- basal cell nevus syndrome 1Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
- holoprosencephaly 7Inheritance: AD Classification: DEFINITIVE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
- nevoid basal cell carcinoma syndromeInheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, ClinGen, Labcorp Genetics (formerly Invitae), Orphanet
- holoprosencephalyInheritance: AD Classification: LIMITED Submitted by: Illumina
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ACMG classification
Our verdict: Benign. The variant received -14 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| PTCH1 | ENST00000331920.11 | c.4171C>T | p.Arg1391Trp | missense_variant | Exon 23 of 24 | 5 | NM_000264.5 | ENSP00000332353.6 | ||
| PTCH1 | ENST00000437951.6 | c.4168C>T | p.Arg1390Trp | missense_variant | Exon 23 of 24 | 5 | NM_001083603.3 | ENSP00000389744.2 |
Frequencies
GnomAD3 genomes AF: 0.0000920 AC: 14AN: 152180Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000762 AC: 19AN: 249252 AF XY: 0.0000739 show subpopulations
GnomAD4 exome AF: 0.0000903 AC: 132AN: 1461572Hom.: 0 Cov.: 30 AF XY: 0.0000756 AC XY: 55AN XY: 727084 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000919 AC: 14AN: 152298Hom.: 0 Cov.: 32 AF XY: 0.000134 AC XY: 10AN XY: 74464 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not provided Uncertain:1Benign:2
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PTCH1: BP4, BS1 -
Hereditary cancer-predisposing syndrome Benign:2
This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
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PTCH1-related disorder Benign:1
This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -
Gorlin syndrome Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at