rs775235892

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_000264.5(PTCH1):​c.2102G>T​(p.Ser701Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000821 in 1,461,884 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S701N) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000082 ( 0 hom. )

Consequence

PTCH1
NM_000264.5 missense

Scores

4
15

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 2.83

Publications

0 publications found
Variant links:
Genes affected
PTCH1 (HGNC:9585): (patched 1) This gene encodes a member of the patched family of proteins and a component of the hedgehog signaling pathway. Hedgehog signaling is important in embryonic development and tumorigenesis. The encoded protein is the receptor for the secreted hedgehog ligands, which include sonic hedgehog, indian hedgehog and desert hedgehog. Following binding by one of the hedgehog ligands, the encoded protein is trafficked away from the primary cilium, relieving inhibition of the G-protein-coupled receptor smoothened, which results in activation of downstream signaling. Mutations of this gene have been associated with basal cell nevus syndrome and holoprosencephaly. [provided by RefSeq, Aug 2017]
PTCH1 Gene-Disease associations (from GenCC):
  • basal cell nevus syndrome 1
    Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
  • holoprosencephaly 7
    Inheritance: AD Classification: DEFINITIVE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
  • nevoid basal cell carcinoma syndrome
    Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, ClinGen, Labcorp Genetics (formerly Invitae), Orphanet
  • holoprosencephaly
    Inheritance: AD Classification: LIMITED Submitted by: Illumina

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.16377288).
BP6
Variant 9-95468899-C-A is Benign according to our data. Variant chr9-95468899-C-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 409160.
BS2
High AC in GnomAdExome4 at 12 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
PTCH1NM_000264.5 linkc.2102G>T p.Ser701Ile missense_variant Exon 14 of 24 ENST00000331920.11 NP_000255.2 Q13635-1
PTCH1NM_001083603.3 linkc.2099G>T p.Ser700Ile missense_variant Exon 14 of 24 ENST00000437951.6 NP_001077072.1 Q13635-2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
PTCH1ENST00000331920.11 linkc.2102G>T p.Ser701Ile missense_variant Exon 14 of 24 5 NM_000264.5 ENSP00000332353.6 Q13635-1
PTCH1ENST00000437951.6 linkc.2099G>T p.Ser700Ile missense_variant Exon 14 of 24 5 NM_001083603.3 ENSP00000389744.2 Q13635-2

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.00000398
AC:
1
AN:
251436
AF XY:
0.00000736
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000879
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000821
AC:
12
AN:
1461884
Hom.:
0
Cov.:
33
AF XY:
0.0000124
AC XY:
9
AN XY:
727240
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33478
American (AMR)
AF:
0.00
AC:
0
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86258
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53416
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.0000108
AC:
12
AN:
1112008
Other (OTH)
AF:
0.00
AC:
0
AN:
60396
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.479
Heterozygous variant carriers
0
1
2
4
5
6
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
Cov.:
32
ExAC
AF:
0.00000824
AC:
1
EpiCase
AF:
0.00
EpiControl
AF:
0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:2Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:1
Nov 21, 2023
GeneDx
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

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; This variant is associated with the following publications: (PMID: 11331587) -

Hereditary cancer-predisposing syndrome Uncertain:1
Apr 24, 2025
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The p.S701I variant (also known as c.2102G>T), located in coding exon 14 of the PTCH1 gene, results from a G to T substitution at nucleotide position 2102. The serine at codon 701 is replaced by isoleucine, an amino acid with dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Gorlin syndrome Benign:1
Sep 21, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.095
BayesDel_addAF
Benign
-0.0079
T
BayesDel_noAF
Benign
-0.25
CADD
Benign
22
DANN
Benign
0.96
DEOGEN2
Uncertain
0.45
T;.;.;.;.;.;.
Eigen
Benign
-0.16
Eigen_PC
Benign
0.044
FATHMM_MKL
Uncertain
0.97
D
LIST_S2
Uncertain
0.92
D;.;D;D;.;.;D
M_CAP
Benign
0.056
D
MetaRNN
Benign
0.16
T;T;T;T;T;T;T
MetaSVM
Benign
-0.41
T
MutationAssessor
Benign
1.0
L;.;.;.;.;.;.
PhyloP100
2.8
PrimateAI
Uncertain
0.67
T
PROVEAN
Benign
-1.3
N;N;N;N;N;N;N
REVEL
Benign
0.25
Sift
Benign
0.38
T;T;T;T;T;T;T
Sift4G
Benign
0.48
T;T;T;T;T;T;T
Polyphen
0.0020
B;B;B;B;B;B;B
Vest4
0.47
MutPred
0.34
Loss of glycosylation at S701 (P = 0.0304);.;.;.;.;.;.;
MVP
0.41
MPC
0.65
ClinPred
0.57
D
GERP RS
4.8
Varity_R
0.15
gMVP
0.59
Mutation Taster
=40/60
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs775235892; hg19: chr9-98231181; API