Genetic Variant NM_000264.5:c.3633C>G (chr9-95449240-G-C) – ACMG Classification: Benign (-21 pts)

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_000264.5(PTCH1):c.3633C>G(p.Pro1211Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000147 in 1,583,216 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. P1211P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00087 ( 2 hom., cov: 33)

Exomes 𝑓: 0.000070 ( 1 hom. )

Consequence

PTCH1
NM_000264.5 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: -1.63

Publications

3 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: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.85).

BP6

Variant 9-95449240-G-C is Benign according to our data. Variant chr9-95449240-G-C is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 215459.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-1.63 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000873 (133/152386) while in subpopulation AFR AF = 0.00291 (121/41592). AF 95% confidence interval is 0.00249. There are 2 homozygotes in GnomAd4. There are 74 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High AC in GnomAd4 at 133 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000264.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
PTCH1	NM_000264.5	MANE Select	c.3633C>G	p.Pro1211Pro	synonymous	Exon 22 of 24	NP_000255.2
PTCH1	NM_001083603.3	MANE Plus Clinical	c.3630C>G	p.Pro1210Pro	synonymous	Exon 22 of 24	NP_001077072.1
PTCH1	NM_001354918.2		c.3477C>G	p.Pro1159Pro	synonymous	Exon 21 of 23	NP_001341847.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
PTCH1	ENST00000331920.11	TSL:5 MANE Select	c.3633C>G	p.Pro1211Pro	synonymous	Exon 22 of 24	ENSP00000332353.6
PTCH1	ENST00000437951.6	TSL:5 MANE Plus Clinical	c.3630C>G	p.Pro1210Pro	synonymous	Exon 22 of 24	ENSP00000389744.2
PTCH1	ENST00000429896.6	TSL:1	c.3180C>G	p.Pro1060Pro	synonymous	Exon 22 of 24	ENSP00000414823.2

Frequencies

GnomAD3 genomes

AF:

0.000887

AC:

135

AN:

152268

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00297

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000589

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000176

AC:

AN:

193728

AF XY:

0.0000965

show subpopulations

Gnomad AFR exome

AF:

0.00267

Gnomad AMR exome

AF:

0.0000727

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000197

GnomAD4 exome

AF:

0.0000699

AC:

100

AN:

1430830

Hom.:

Cov.:

AF XY:

0.0000649

AC XY:

AN XY:

708852

show subpopulations

African (AFR)

AF:

0.00251

AC:

AN:

33028

American (AMR)

AF:

0.000103

AC:

AN:

38870

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25452

East Asian (EAS)

AF:

0.00

AC:

AN:

38368

South Asian (SAS)

AF:

0.0000485

AC:

AN:

82458

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51138

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5732

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1096486

Other (OTH)

AF:

0.000152

AC:

AN:

59298

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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

AF:

0.000873

AC:

133

AN:

152386

Hom.:

Cov.:

AF XY:

0.000993

AC XY:

AN XY:

74524

show subpopulations

African (AFR)

AF:

0.00291

AC:

121

AN:

41592

American (AMR)

AF:

0.000588

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10632

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68040

Other (OTH)

AF:

0.000473

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.0000559

Hom.:

Bravo

AF:

0.00104

ClinVar

ClinVar submissions as Germline

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Gorlin syndrome (2)

Hereditary cancer-predisposing syndrome (2)

not provided (2)

not specified (2)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.85

CADD

Benign

0.052

(source)

DANN

Benign

0.46

PhyloP100

-1.6

Mutation Taster

=100/0

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over