Genetic Variant NM_000264.5:c.2558A>T (chr9-95467118-T-A) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PM5

The NM_000264.5(PTCH1):c.2558A>T(p.Gln853Leu) variant causes a missense, splice region change. The variant was absent in control chromosomes in GnomAD project. 3/3 splice prediction tools predict no significant impact on normal splicing. 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. Q853P) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 33)

Consequence

PTCH1
NM_000264.5 missense, splice_region

Scores

Splicing: ADA: 0.008739

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.83

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:

LOC100507346 (HGNC:):

LOC100507346 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr9-95467118-T-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 428818.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PTCH1	NM_000264.5 link	c.2558A>T	p.Gln853Leu	missense_variant, splice_region_variant	Exon 15 of 24	ENST00000331920.11	NP_000255.2
PTCH1	NM_001083603.3 link	c.2555A>T	p.Gln852Leu	missense_variant, splice_region_variant	Exon 15 of 24	ENST00000437951.6	NP_001077072.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PTCH1	ENST00000331920.11 link	c.2558A>T	p.Gln853Leu	missense_variant, splice_region_variant	Exon 15 of 24	5	NM_000264.5	ENSP00000332353.6
PTCH1	ENST00000437951.6 link	c.2555A>T	p.Gln852Leu	missense_variant, splice_region_variant	Exon 15 of 24	5	NM_001083603.3	ENSP00000389744.2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Uncertain

0.11

BayesDel_noAF

Uncertain

-0.070

CADD

Benign

(source)

DANN

Benign

0.67

DEOGEN2

Benign

0.28

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

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.094

FATHMM_MKL

Uncertain

0.97

LIST_S2

Benign

0.80

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

M_CAP

Benign

0.053

MetaRNN

Uncertain

0.44

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

MetaSVM

Benign

-0.65

MutationAssessor

Benign

1.1

L;.;.;.;.;.;.

PhyloP100

5.8

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-0.36

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

REVEL

Uncertain

0.39

Sift

Benign

0.59

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

Sift4G

Benign

1.0

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

Polyphen

0.0

B;.;.;B;B;.;B

Vest4

0.60

MutPred

0.44

Loss of helix (P = 0.0196);.;.;.;.;.;.;

MVP

0.78

MPC

0.53

ClinPred

0.66

GERP RS

5.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.44

gMVP

0.75

Mutation Taster

=35/65

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0087

dbscSNV1_RF

Benign

0.16

SpliceAI score (max)

0.030

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over