9-95447300-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_000264.5(PTCH1):c.3956G>A(p.Arg1319His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000465 in 1,613,112 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000049 ( 0 hom. )

Consequence

PTCH1
NM_000264.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 7.50

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAdExome4 at 71 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PTCH1	NM_000264.5 link	c.3956G>A	p.Arg1319His	missense_variant	Exon 23 of 24	ENST00000331920.11	NP_000255.2	Q13635-1
PTCH1	NM_001083603.3 link	c.3953G>A	p.Arg1318His	missense_variant	Exon 23 of 24	ENST00000437951.6	NP_001077072.1	Q13635-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PTCH1	ENST00000331920.11 link	c.3956G>A	p.Arg1319His	missense_variant	Exon 23 of 24	5	NM_000264.5	ENSP00000332353.6		Q13635-1
PTCH1	ENST00000437951.6 link	c.3953G>A	p.Arg1318His	missense_variant	Exon 23 of 24	5	NM_001083603.3	ENSP00000389744.2		Q13635-2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000244

AC:

AN:

246162

Hom.:

AF XY:

0.00000744

AC XY:

AN XY:

134464

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 SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000452

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000486

AC:

AN:

1460832

Hom.:

Cov.:

AF XY:

0.0000482

AC XY:

AN XY:

726720

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000585

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152280

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74454

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000279

Hom.:

Bravo

AF:

0.0000264

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000166

AC:

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

PTCH1-related disorder

Uncertain:1

Aug 12, 2024

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

The PTCH1 c.3956G>A variant is predicted to result in the amino acid substitution p.Arg1319His. This variant has been reported in a mother and her two children with basal cell nevus syndrome; however, the variant co-occurred with two additional variants in the PTCH1 gene (Matsuzawa et al. 2006. PubMed ID: 17021131). This variant is reported in 0.0045% of alleles in individuals of European (Non-Finnish) descent in gnomAD and has conflicting interpretations in ClinVar ranging from likely benign to uncertain significance. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Hereditary cancer-predisposing syndrome

Uncertain:1

Nov 16, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.R1319H variant (also known as c.3956G>A), located in coding exon 23 of the PTCH1 gene, results from a G to A substitution at nucleotide position 3956. The arginine at codon 1319 is replaced by histidine, an amino acid with highly similar properties. This alteration was identified in cis with two other PTCH1 alterations (c.1415C>A, p.A472D; and c.1451G>T, p.G484V) in three NBCCS-affected members of one Japanese family (Matsuzawa N et al. J. Clin. Pathol., 2006 Oct;59:1084-6). This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Gorlin syndrome

Benign:1

Feb 02, 2025

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

0.14

BayesDel_addAF

Pathogenic

0.34

BayesDel_noAF

Pathogenic

0.36

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.32

T;.;.;.;.;.;.

Eigen

Pathogenic

0.77

Eigen_PC

Pathogenic

0.75

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.95

D;.;D;D;.;.;D

M_CAP

Uncertain

0.22

MetaRNN

Uncertain

0.58

D;D;D;D;D;D;D

MetaSVM

Uncertain

0.75

MutationAssessor

Uncertain

2.3

M;.;.;.;.;.;.

PrimateAI

Uncertain

0.70

PROVEAN

Benign

-0.31

N;N;N;N;N;N;N

REVEL

Pathogenic

0.79

Sift

Uncertain

0.0040

D;D;D;D;D;D;D

Sift4G

Benign

0.17

T;T;T;T;T;T;T

Polyphen

1.0

D;.;.;D;D;.;D

Vest4

0.71

MVP

0.82

MPC

0.43

ClinPred

0.95

GERP RS

5.1

Varity_R

0.26

gMVP

0.48

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over