9-95485735-GTGT-G

Variant names:

• chr9-95485735-GTGT-G
• rs864622108
• NM_000264.5:c.531_533delACA

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PM4_Supporting

The ENST00000331920.11(PTCH1):​c.531_533delACA​(p.Gln177del) variant causes a disruptive inframe deletion change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. Q177Q) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PTCH1 ENST00000331920.11 disruptive_inframe_deletion
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.60
• Publications: 0 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, Labcorp Genetics (formerly Invitae), Orphanet
• holoprosencephaly

  Inheritance: AD Classification: LIMITED Submitted by: Illumina

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM4: Nonframeshift variant in NON repetitive region in ENST00000331920.11. Strenght limited to Supporting due to length of the change: 1aa.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000331920.11. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTCH1	NM_000264.5	MANE Select	c.531_533delACA	p.Gln177del	disruptive_inframe_deletion	Exon 3 of 24	NP_000255.2
	PTCH1	NM_001083603.3	MANE Plus Clinical	c.528_530delACA	p.Gln176del	disruptive_inframe_deletion	Exon 3 of 24	NP_001077072.1
	PTCH1	NM_001354918.2		c.531_533delACA	p.Gln177del	disruptive_inframe_deletion	Exon 3 of 23	NP_001341847.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTCH1	ENST00000331920.11	TSL:5 MANE Select	c.531_533delACA	p.Gln177del	disruptive_inframe_deletion	Exon 3 of 24	ENSP00000332353.6
	PTCH1	ENST00000437951.6	TSL:5 MANE Plus Clinical	c.528_530delACA	p.Gln176del	disruptive_inframe_deletion	Exon 3 of 24	ENSP00000389744.2
	PTCH1	ENST00000429896.6	TSL:1	c.78_80delACA	p.Gln26del	disruptive_inframe_deletion	Exon 3 of 24	ENSP00000414823.2

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Gorlin syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		9.6
Mutation Taster		=18/82	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: rs864622108; hg19: chr9-98248017;