NM_000264.5:c.4051A>G

Variant names:

• chr9-95447205-T-C
• rs786204103
• NM_000264.5:c.4051A>G

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_Moderate BP6 BS2

The NM_000264.5(PTCH1):​c.4051A>G​(p.Asn1351Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000089 in 1,460,642 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict 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. N1351S) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000089 (0 hom.)
• Consequence: PTCH1 NM_000264.5 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2 B:2
• Conservation: PhyloP100: 3.09
• Publications: 1 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

ACMG classification

Our verdict: Benign. The variant received -7 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.15852675).
• BP6: Variant 9-95447205-T-C is Benign according to our data. Variant chr9-95447205-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 188148.
• BS2: High AC in GnomAdExome4 at 13 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.4051A>G	p.Asn1351Asp	missense	Exon 23 of 24	NP_000255.2	Q13635-1
	PTCH1	NM_001083603.3	MANE Plus Clinical	c.4048A>G	p.Asn1350Asp	missense	Exon 23 of 24	NP_001077072.1	Q13635-2
	PTCH1	NM_001354918.2		c.3895A>G	p.Asn1299Asp	missense	Exon 22 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.4051A>G	p.Asn1351Asp	missense	Exon 23 of 24	ENSP00000332353.6	Q13635-1
	PTCH1	ENST00000437951.6	TSL:5 MANE Plus Clinical	c.4048A>G	p.Asn1350Asp	missense	Exon 23 of 24	ENSP00000389744.2	Q13635-2
	PTCH1	ENST00000429896.6	TSL:1	c.3598A>G	p.Asn1200Asp	missense	Exon 23 of 24	ENSP00000414823.2	Q13635-4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000406 AC: 1 AN: 246598 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000906

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000890 AC: 13 AN: 1460642 Hom.: 0 Cov.: 30 AF XY: 0.00000963 AC XY: 7 AN XY: 726622

African (AFR) AF: 0.0000299 AC: 1 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52336

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

European-Non Finnish (NFE) AF: 0.0000108 AC: 12 AN: 1111884

Other (OTH) AF: 0.00 AC: 0 AN: 60368

GnomAD4 genome Cov.: 32

Alfa AF: 0.000111 Hom.: 0

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	-	1	Gorlin syndrome (1)
-	1	-	Gorlin syndrome;C1835820:Holoprosencephaly 7;C2751544:Basal cell carcinoma, susceptibility to, 1 (1)
-	-	1	Hereditary cancer-predisposing syndrome (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.097
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	18
DANN	Uncertain	0.99
DEOGEN2	Benign	0.29	T
Eigen	Benign	-0.32
Eigen_PC	Benign	-0.18
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.80	T
M_CAP	Benign	0.052	D
MetaRNN	Benign	0.16	T
MetaSVM	Benign	-0.29	T
MutationAssessor	Benign	1.8	L
PhyloP100		3.1
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-0.67	N
REVEL	Benign	0.15
Sift	Benign	0.20	T
Sift4G	Benign	0.26	T
Polyphen		0.039	B
Vest4		0.15
MutPred		0.17		Loss of MoRF binding (P = 0.0515)
MVP		0.67
MPC		0.090
ClinPred		0.22	T
GERP RS		2.9
Varity_R		0.068
gMVP		0.14
Mutation Taster		=84/16	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: rs786204103; hg19: chr9-98209487;