chr9-95469851-G-A

Variant names:

• chr9-95469851-G-A
• rs145690756
• NM_000264.5:c.1809C>T

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_Strong BP6 BP7 BS1 BS2

The NM_000264.5(PTCH1):​c.1809C>T​(p.Arg603Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000762 in 1,613,990 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). Synonymous variant affecting the same amino acid position (i.e. R603R) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.00012 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000072 (0 hom.)
• Consequence: PTCH1 NM_000264.5 synonymous
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:6
• Conservation: PhyloP100: -2.83
• Publications: 4 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 -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.75).
• BP6: Variant 9-95469851-G-A is Benign according to our data. Variant chr9-95469851-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 215456.
• BP7: Synonymous conserved (PhyloP=-2.83 with no splicing effect.
• BS1: Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000118 (18/152170) while in subpopulation EAS AF = 0.00213 (11/5176). AF 95% confidence interval is 0.00119. There are 0 homozygotes in GnomAd4. There are 11 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High AC in GnomAd4 at 18 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.1809C>T	p.Arg603Arg	synonymous	Exon 13 of 24	NP_000255.2	Q13635-1
	PTCH1	NM_001083603.3	MANE Plus Clinical	c.1806C>T	p.Arg602Arg	synonymous	Exon 13 of 24	NP_001077072.1	Q13635-2
	PTCH1	NM_001354918.2		c.1653C>T	p.Arg551Arg	synonymous	Exon 12 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.1809C>T	p.Arg603Arg	synonymous	Exon 13 of 24	ENSP00000332353.6	Q13635-1
	PTCH1	ENST00000437951.6	TSL:5 MANE Plus Clinical	c.1806C>T	p.Arg602Arg	synonymous	Exon 13 of 24	ENSP00000389744.2	Q13635-2
	PTCH1	ENST00000429896.6	TSL:1	c.1356C>T	p.Arg452Arg	synonymous	Exon 13 of 24	ENSP00000414823.2	Q13635-4

Frequencies

GnomAD3 genomes AF: 0.000125 AC: 19 AN: 152052 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000121

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00231

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.000481

GnomAD2 exomes AF: 0.000191 AC: 48 AN: 251476 AF XY: 0.000213

Gnomad AFR exome AF: 0.0000615

Gnomad AMR exome AF: 0.0000578

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00217

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000879

Gnomad OTH exome AF: 0.000489

GnomAD4 exome AF: 0.0000718 AC: 105 AN: 1461820 Hom.: 0 Cov.: 31 AF XY: 0.0000633 AC XY: 46 AN XY: 727228

African (AFR) AF: 0.000179 AC: 6 AN: 33478

American (AMR) AF: 0.0000671 AC: 3 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00126 AC: 50 AN: 39700

South Asian (SAS) AF: 0.0000464 AC: 4 AN: 86254

European-Finnish (FIN) AF: 0.0000187 AC: 1 AN: 53412

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

European-Non Finnish (NFE) AF: 0.00000540 AC: 6 AN: 1111958

Other (OTH) AF: 0.000580 AC: 35 AN: 60390

GnomAD4 genome AF: 0.000118 AC: 18 AN: 152170 Hom.: 0 Cov.: 32 AF XY: 0.000148 AC XY: 11 AN XY: 74388

African (AFR) AF: 0.000120 AC: 5 AN: 41506

American (AMR) AF: 0.00 AC: 0 AN: 15290

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00213 AC: 11 AN: 5176

South Asian (SAS) AF: 0.00 AC: 0 AN: 4808

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10594

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68018

Other (OTH) AF: 0.000476 AC: 1 AN: 2102

Alfa AF: 0.0000434 Hom.: 0

Bravo AF: 0.000110

EpiCase AF: 0.00

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)
-	-	1	Gorlin syndrome;C1835820:Holoprosencephaly 7;C2751544:Basal cell carcinoma, susceptibility to, 1 (1)
-	-	1	Hereditary cancer-predisposing syndrome (1)
-	1	-	Holoprosencephaly 7;C2751544:Basal cell carcinoma, susceptibility to, 1;CN376810:Basal cell nevus syndrome 1 (1)
-	-	1	not specified (1)
-	-	1	PTCH1-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.75
CADD	Benign	5.5
DANN	Benign	0.78
PhyloP100		-2.8
Mutation Taster		=98/2	polymorphism

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: rs145690756; hg19: chr9-98232133; COSMIC: COSV59468597; COSMIC: COSV59468597;