NM_000264.5:c.-18_-4dupGGCGGCGGCGGCGGC

Variant names:

• chr9-95508364-T-TGCCGCCGCCGCCGCC
• rs71366293
• NM_000264.5:c.-18_-4dupGGCGGCGGCGGCGGC

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP6

The NM_000264.5(PTCH1):​c.-18_-4dupGGCGGCGGCGGCGGC variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000135 in 147,736 control chromosomes in the GnomAD database, with no homozygous occurrence. It is difficult to determine the true allele frequency of this variant because it is of type INS_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. Variant has been reported in ClinVar as Likely benign (no stars).

• Frequency: Genomes: 𝑓 0.000014 (0 hom., cov: 22)
• Consequence: PTCH1 NM_000264.5 5_prime_UTR
• Clinical Significance: Likely benign no assertion criteria provided B:1
• Conservation: PhyloP100: 3.30
• Publications: 2 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: Likely_benign. The variant received -1 ACMG points.

• BP6: Variant 9-95508364-T-TGCCGCCGCCGCCGCC is Benign according to our data. Variant chr9-95508364-T-TGCCGCCGCCGCCGCC is described in ClinVar as Likely_benign. ClinVar VariationId is 3049919.Status of the report is no_assertion_criteria_provided, 0 stars.

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.-18_-4dupGGCGGCGGCGGCGGC		5_prime_UTR	Exon 1 of 24	NP_000255.2
	PTCH1	NM_001083603.3	MANE Plus Clinical	c.199-1780_199-1766dupGGCGGCGGCGGCGGC		intron	N/A	NP_001077072.1
	PTCH1	NM_001354918.2		c.-18_-4dupGGCGGCGGCGGCGGC		5_prime_UTR	Exon 1 of 23	NP_001341847.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTCH1	ENST00000331920.11	TSL:5 MANE Select	c.-18_-4dupGGCGGCGGCGGCGGC		5_prime_UTR	Exon 1 of 24	ENSP00000332353.6
	PTCH1	ENST00000437951.6	TSL:5 MANE Plus Clinical	c.199-1780_199-1766dupGGCGGCGGCGGCGGC		intron	N/A	ENSP00000389744.2
	PTCH1	ENST00000468211.6	TSL:1	c.4-1780_4-1766dupGGCGGCGGCGGCGGC		intron	N/A	ENSP00000449745.1

Frequencies

GnomAD3 genomes AF: 0.0000135 AC: 2 AN: 147736 Hom.: 0 Cov.: 22

Gnomad AFR AF: 0.0000492

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 30

GnomAD4 genome AF: 0.0000135 AC: 2 AN: 147736 Hom.: 0 Cov.: 22 AF XY: 0.0000139 AC XY: 1 AN XY: 71922

African (AFR) AF: 0.0000492 AC: 2 AN: 40630

American (AMR) AF: 0.00 AC: 0 AN: 14932

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3398

East Asian (EAS) AF: 0.00 AC: 0 AN: 4964

South Asian (SAS) AF: 0.00 AC: 0 AN: 4754

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 9392

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 310

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 66442

Other (OTH) AF: 0.00 AC: 0 AN: 2024

Alfa AF: 0.00 Hom.: 138

ClinVar

ClinVar submissions as Germline

Significance: Likely benign

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
-	-	1	PTCH1-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.3

Splicing

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

Other links and lift over

dbSNP: rs71366293; hg19: chr9-98270646;