chr9-95508348-C-A

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_000264.5(PTCH1):c.14G>T(p.Gly5Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000188 in 1,063,572 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G5A) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000019 ( 0 hom. )

Consequence

PTCH1
NM_000264.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.128

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

PTCH1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.14597309).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PTCH1	NM_000264.5 link	c.14G>T	p.Gly5Val	missense_variant	Exon 1 of 24	ENST00000331920.11	NP_000255.2	Q13635-1
PTCH1	NM_001083603.3 link	c.199-1749G>T		intron_variant	Intron 1 of 23	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.14G>T	p.Gly5Val	missense_variant	Exon 1 of 24	5	NM_000264.5	ENSP00000332353.6		Q13635-1
PTCH1	ENST00000437951.6 link	c.199-1749G>T		intron_variant	Intron 1 of 23	5	NM_001083603.3	ENSP00000389744.2		Q13635-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000188

AC:

AN:

1063572

Hom.:

Cov.:

AF XY:

0.00000198

AC XY:

AN XY:

505024

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

21866

American (AMR)

AF:

0.00

AC:

AN:

7626

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

13166

East Asian (EAS)

AF:

0.00

AC:

AN:

24862

South Asian (SAS)

AF:

0.00

AC:

AN:

20082

European-Finnish (FIN)

AF:

0.00

AC:

AN:

22534

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2810

European-Non Finnish (NFE)

AF:

0.00000220

AC:

AN:

908564

Other (OTH)

AF:

0.00

AC:

AN:

42062

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Jan 05, 2024

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 -

Hereditary cancer-predisposing syndrome

Uncertain:1

Nov 16, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.G5V variant (also known as c.14G>T), located in coding exon 1 of the PTCH1 gene, results from a G to T substitution at nucleotide position 14. The glycine at codon 5 is replaced by valine, an amino acid with dissimilar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.062

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.40

CADD

Benign

(source)

DANN

Benign

0.94

DEOGEN2

Benign

0.24

Eigen

Benign

-0.60

Eigen_PC

Benign

-0.43

FATHMM_MKL

Benign

0.39

LIST_S2

Benign

0.63

M_CAP

Pathogenic

0.98

MetaRNN

Benign

0.15

MetaSVM

Benign

-0.65

MutationAssessor

Benign

0.0

PhyloP100

0.13

PrimateAI

Pathogenic

0.89

PROVEAN

Benign

-0.67

REVEL

Uncertain

0.29

Sift

Benign

0.24

Sift4G

Benign

0.30

Polyphen

0.0

Vest4

0.073

MutPred

0.10

Loss of relative solvent accessibility (P = 0.0306);

MVP

0.26

MPC

1.6

ClinPred

0.26

GERP RS

1.9

PromoterAI

-0.039

Neutral

(source)

Varity_R

0.10

gMVP

0.50

Mutation Taster

=74/26

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over