rs201595274
Variant summary
Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2
The NM_000264.5(PTCH1):c.3839C>T(p.Ser1280Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000705 in 1,602,842 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 Likely benign (★★).
Frequency
Consequence
NM_000264.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -20 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
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PTCH1 | ENST00000331920.11 | c.3839C>T | p.Ser1280Leu | missense_variant | Exon 23 of 24 | 5 | NM_000264.5 | ENSP00000332353.6 | ||
PTCH1 | ENST00000437951.6 | c.3836C>T | p.Ser1279Leu | missense_variant | Exon 23 of 24 | 5 | NM_001083603.3 | ENSP00000389744.2 |
Frequencies
GnomAD3 genomes AF: 0.000158 AC: 24AN: 152188Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.000230 AC: 55AN: 239534Hom.: 0 AF XY: 0.000145 AC XY: 19AN XY: 130612
GnomAD4 exome AF: 0.0000614 AC: 89AN: 1450536Hom.: 0 Cov.: 33 AF XY: 0.0000527 AC XY: 38AN XY: 720830
GnomAD4 genome AF: 0.000158 AC: 24AN: 152306Hom.: 0 Cov.: 33 AF XY: 0.000175 AC XY: 13AN XY: 74474
ClinVar
Submissions by phenotype
not provided Benign:5
Variant summary: The PTCH1 c.3839C>T (p.Ser1280Leu) variant involves the alteration of a non-conserved nucleotide. 4/5 in silico tools predict benign outcome for this variant. This variant was found in 25/113926 control chromosomes from ExAC at a frequency of 0.0002194, which is approximately 13 times the estimated maximal expected allele frequency of a pathogenic PTCH1 variant (0.0000171), suggesting this variant is likely a benign polymorphism. In addition, multiple clinical diagnostic laboratories in ClinVar have classified this variant as likely benign. To our knowledge, this variant has not been reported in affected individuals in literature, nor has it been evaluated for functional impact by in vivo/vitro studies. Taken together, this variant is classified as likely benign. -
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PTCH1: BS1, BS2 -
Gorlin syndrome Benign:2
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This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Hereditary cancer-predisposing syndrome Benign:2
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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. -
Ovarian cancer Benign:1
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Basal cell nevus syndrome 1 Benign:1
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Holoprosencephaly 7 Benign:1
This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at