9-95468824-G-C

Variant names:

• chr9-95468824-G-C
• rs587780697
• NM_000264.5:c.2177C>G

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_Strong BP6 BS2

The NM_000264.5(PTCH1):​c.2177C>G​(p.Pro726Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000948 in 1,614,022 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. P726H) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000099 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000094 (0 hom.)
• Consequence: PTCH1 NM_000264.5 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:7
• Conservation: PhyloP100: 7.36
• Publications: 5 publications found

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, Orphanet, Labcorp Genetics (formerly Invitae)
• holoprosencephaly

  Inheritance: AD Classification: LIMITED Submitted by: Illumina

LOC100507346 (HGNC:):

ACMG classification

Our verdict: Benign. The variant received -9 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.04925421).
• BP6: Variant 9-95468824-G-C is Benign according to our data. Variant chr9-95468824-G-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 135877.
• BS2: High AC in GnomAd4 at 15 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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTCH1	NM_000264.5	MANE Select	c.2177C>G	p.Pro726Arg	missense	Exon 14 of 24	NP_000255.2	Q13635-1
	PTCH1	NM_001083603.3	MANE Plus Clinical	c.2174C>G	p.Pro725Arg	missense	Exon 14 of 24	NP_001077072.1	Q13635-2
	PTCH1	NM_001354918.2		c.2021C>G	p.Pro674Arg	missense	Exon 13 of 23	NP_001341847.1	A0A1W5YLI7

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTCH1	ENST00000331920.11	TSL:5 MANE Select	c.2177C>G	p.Pro726Arg	missense	Exon 14 of 24	ENSP00000332353.6	Q13635-1
	PTCH1	ENST00000437951.6	TSL:5 MANE Plus Clinical	c.2174C>G	p.Pro725Arg	missense	Exon 14 of 24	ENSP00000389744.2	Q13635-2
	PTCH1	ENST00000429896.6	TSL:1	c.1724C>G	p.Pro575Arg	missense	Exon 14 of 24	ENSP00000414823.2	Q13635-4

Frequencies

GnomAD3 genomes AF: 0.0000986 AC: 15 AN: 152134 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00374

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: 0.00

GnomAD2 exomes AF: 0.000155 AC: 39 AN: 251480 AF XY: 0.000118

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00337

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000352

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000944 AC: 138 AN: 1461888 Hom.: 0 Cov.: 33 AF XY: 0.0000963 AC XY: 70 AN XY: 727248

African (AFR) AF: 0.0000597 AC: 2 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00356 AC: 93 AN: 26136

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000207 AC: 23 AN: 1112012

Other (OTH) AF: 0.000315 AC: 19 AN: 60396

GnomAD4 genome AF: 0.0000986 AC: 15 AN: 152134 Hom.: 0 Cov.: 32 AF XY: 0.0000807 AC XY: 6 AN XY: 74326

African (AFR) AF: 0.00 AC: 0 AN: 41428

American (AMR) AF: 0.00 AC: 0 AN: 15270

Ashkenazi Jewish (ASJ) AF: 0.00374 AC: 13 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5184

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10610

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68026

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.000545 Hom.: 0

Bravo AF: 0.000121

ExAC AF: 0.000115 AC: 14

EpiCase AF: 0.000164

EpiControl AF: 0.000119

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	-	2	Gorlin syndrome (2)
-	-	2	Hereditary cancer-predisposing syndrome (2)
-	-	2	not provided (2)
-	1	-	Holoprosencephaly 7 (1)
-	-	1	PTCH1-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.089
BayesDel_addAF	Pathogenic	0.18	D
BayesDel_noAF	Uncertain	0.090
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.59	D
Eigen	Uncertain	0.25
Eigen_PC	Uncertain	0.36
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.80	T
M_CAP	Uncertain	0.16	D
MetaRNN	Benign	0.049	T
MetaSVM	Uncertain	0.27	D
MutationAssessor	Uncertain	2.1	M
PhyloP100		7.4
PrimateAI	Uncertain	0.70	T
PROVEAN	Uncertain	-2.8	D
REVEL	Pathogenic	0.69
Sift	Benign	0.11	T
Sift4G	Benign	0.17	T
Polyphen		0.040	B
Vest4		0.42
MVP		0.43
MPC		0.60
ClinPred		0.23	T
GERP RS		4.8
Varity_R		0.22
gMVP		0.57
Mutation Taster		=35/65	disease causing

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

Other links and lift over

dbSNP: rs587780697; hg19: chr9-98231106;