rs143494325

Positions:

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 1P and 7B. PP2BP4_ModerateBP6BS2

The NM_000264.5(PTCH1):c.113G>T(p.Gly38Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000336 in 1,603,018 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 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. G38A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00040 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00033 ( 0 hom. )

Consequence

PTCH1
NM_000264.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:12

Conservation

PhyloP100: 0.893

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 -6 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), PTCH1. . Gene score misZ 1.6774 (greater than the threshold 3.09). Trascript score misZ 3.1343 (greater than threshold 3.09). GenCC has associacion of gene with holoprosencephaly 7, nevoid basal cell carcinoma syndrome, holoprosencephaly.

BP4

Computational evidence support a benign effect (MetaRNN=0.18916169).

BP6

Variant 9-95508249-C-A is Benign according to our data. Variant chr9-95508249-C-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 188272.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=6, Uncertain_significance=1, Benign=3}. Variant chr9-95508249-C-A is described in Lovd as [Likely_benign].

BS2

High AC in GnomAd4 at 60 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PTCH1	NM_000264.5 linkuse as main transcript	c.113G>T	p.Gly38Val	missense_variant	1/24	ENST00000331920.11
PTCH1	NM_001083603.3 linkuse as main transcript	c.199-1650G>T		intron_variant		ENST00000437951.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PTCH1	ENST00000331920.11 linkuse as main transcript	c.113G>T	p.Gly38Val	missense_variant	1/24	5	NM_000264.5	A2	Q13635-1
PTCH1	ENST00000437951.6 linkuse as main transcript	c.199-1650G>T		intron_variant		5	NM_001083603.3		Q13635-2

Frequencies

GnomAD3 genomes

AF:

0.000395

AC:

AN:

151730

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000314

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000590

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000475

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000487

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000301

AC:

AN:

228974

Hom.:

AF XY:

0.000292

AC XY:

AN XY:

126552

show subpopulations

Gnomad AFR exome

AF:

0.000221

Gnomad AMR exome

AF:

0.000150

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000338

Gnomad FIN exome

AF:

0.000280

Gnomad NFE exome

AF:

0.000528

Gnomad OTH exome

AF:

0.000177

GnomAD4 exome

AF:

0.000330

AC:

479

AN:

1451288

Hom.:

Cov.:

AF XY:

0.000316

AC XY:

228

AN XY:

721554

show subpopulations

Gnomad4 AFR exome

AF:

0.000241

Gnomad4 AMR exome

AF:

0.000113

Gnomad4 ASJ exome

AF:

0.000115

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000585

Gnomad4 FIN exome

AF:

0.000141

Gnomad4 NFE exome

AF:

0.000387

Gnomad4 OTH exome

AF:

0.000334

GnomAD4 genome

AF:

0.000395

AC:

AN:

151730

Hom.:

Cov.:

AF XY:

0.000337

AC XY:

AN XY:

74090

show subpopulations

Gnomad4 AFR

AF:

0.000314

Gnomad4 AMR

AF:

0.000590

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000475

Gnomad4 NFE

AF:

0.000487

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000442

Hom.:

Bravo

AF:

0.000370

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000467

AC:

ExAC

AF:

0.000319

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:12

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:5

Uncertain significance, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Mar 10, 2017	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Apr 01, 2023	PTCH1: PP3, BP1, BS1 -
Likely benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Oct 04, 2023	- -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, Amsterdam University Medical Center	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	Apr 11, 2023	- -

Gorlin syndrome

Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 2018	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

Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Jun 28, 2018	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. -
Benign, criteria provided, single submitter	curation	Sema4, Sema4	Nov 18, 2021	- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Dec 26, 2017

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

PTCH1-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jan 26, 2022

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). -

Holoprosencephaly 7

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

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: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.32

CADD

Benign

DANN

Benign

0.95

DEOGEN2

Benign

0.21

Eigen

Benign

-0.44

Eigen_PC

Benign

-0.42

FATHMM_MKL

Benign

0.66

LIST_S2

Benign

0.56

M_CAP

Pathogenic

0.86

MetaRNN

Benign

0.19

MetaSVM

Uncertain

-0.027

MutationAssessor

Benign

0.69

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Pathogenic

0.84

PROVEAN

Benign

-0.49

REVEL

Benign

0.21

Sift

Benign

0.19

Sift4G

Uncertain

0.037

Polyphen

0.099

Vest4

0.11

MVP

0.33

MPC

1.6

ClinPred

0.031

GERP RS

3.7

Varity_R

0.071

gMVP

0.42

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