Genetic Variant PTCH1:p.Pro1211Thr (chr9-95449242-G-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_000264.5(PTCH1):c.3631C>A(p.Pro1211Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000007 in 1,429,032 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P1211S) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

PTCH1
NM_000264.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.41

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:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.31212538).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PTCH1	NM_000264.5 link	c.3631C>A	p.Pro1211Thr	missense_variant	Exon 22 of 24	ENST00000331920.11	NP_000255.2	Q13635-1
PTCH1	NM_001083603.3 link	c.3628C>A	p.Pro1210Thr	missense_variant	Exon 22 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.3631C>A	p.Pro1211Thr	missense_variant	Exon 22 of 24	5	NM_000264.5	ENSP00000332353.6		Q13635-1
PTCH1	ENST00000437951.6 link	c.3628C>A	p.Pro1210Thr	missense_variant	Exon 22 of 24	5	NM_001083603.3	ENSP00000389744.2		Q13635-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.00e-7

AC:

AN:

1429032

Hom.:

Cov.:

AF XY:

0.00000141

AC XY:

AN XY:

707712

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33000

American (AMR)

AF:

0.00

AC:

AN:

38596

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25426

East Asian (EAS)

AF:

0.00

AC:

AN:

38340

South Asian (SAS)

AF:

0.00

AC:

AN:

82230

European-Finnish (FIN)

AF:

0.00

AC:

AN:

50982

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5730

European-Non Finnish (NFE)

AF:

9.13e-7

AC:

AN:

1095500

Other (OTH)

AF:

0.00

AC:

AN:

59228

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

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

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.073

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Uncertain

0.030

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.34

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

Eigen

Uncertain

0.47

Eigen_PC

Uncertain

0.40

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.89

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

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.31

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

MetaSVM

Uncertain

0.64

MutationAssessor

Uncertain

2.2

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

PhyloP100

6.4

PrimateAI

Benign

0.44

PROVEAN

Benign

-1.3

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

REVEL

Uncertain

0.43

Sift

Benign

0.081

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

Sift4G

Benign

0.076

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

Polyphen

1.0

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

Vest4

0.53

MutPred

0.20

Loss of catalytic residue at P1210 (P = 0.016);.;.;.;.;.;.;

MVP

0.54

MPC

0.11

ClinPred

0.93

GERP RS

5.0

Varity_R

0.12

gMVP

0.68

Mutation Taster

=33/67

disease causing

(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

Computational scores

Splicing

Publications

Other links and lift over