rs1555912675

Variant names:

• chrX-23392681-T-G
• rs1555912675
• ENST00000456522.1:c.307T>G

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PM4

The ENST00000456522.1(PTCHD1):​c.307T>G​(p.Ter103Gluext*?) variant causes a stop lost change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 23)
• Consequence: PTCHD1 ENST00000456522.1 stop_lost
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.67
• Publications: 0 publications found

Genes affected

PTCHD1 (HGNC:26392): (patched domain containing 1) This gene encodes a membrane protein with a patched domain. The encoded protein is similar to Drosophila proteins which act as receptors for the morphogen sonic hedgehog. Deletions in this gene, which is located on the X chromosome, are associated with intellectual disability and autism (PMID: 21091464, PMID: 20844286). [provided by RefSeq, Aug 2011]

PTCHD1 Gene-Disease associations (from GenCC):

• autism, susceptibility to, X-linked 4

  Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), G2P
• non-syndromic X-linked intellectual disability

  Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM4: Stoplost variant in ENST00000456522.1 Downstream stopcodon found after 49 codons.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000456522.1. 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
	PTCHD1	NM_173495.3	MANE Select	c.1163T>G	p.Ile388Arg	missense	Exon 3 of 3	NP_775766.2	Q96NR3-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTCHD1	ENST00000456522.1	TSL:1	c.307T>G	p.Ter103Gluext*?	stop_lost	Exon 2 of 2	ENSP00000406663.1	H7C2M0
	PTCHD1	ENST00000379361.5	TSL:1 MANE Select	c.1163T>G	p.Ile388Arg	missense	Exon 3 of 3	ENSP00000368666.4	Q96NR3-1
	PTCHD1	ENST00000903588.1		c.1163T>G	p.Ile388Arg	missense	Exon 4 of 4	ENSP00000573647.1

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 23

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.92
BayesDel_addAF	Pathogenic	0.43	D
BayesDel_noAF	Pathogenic	0.37
CADD	Pathogenic	26
DANN	Benign	0.81
DEOGEN2	Uncertain	0.77	D
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.93	D
M_CAP	Pathogenic	0.78	D
MetaRNN	Pathogenic	0.97	D
MetaSVM	Uncertain	0.63	D
MutationAssessor	Benign	1.6	L
PhyloP100		7.7
PrimateAI	Uncertain	0.79	T
PROVEAN	Pathogenic	-5.8	D
REVEL	Pathogenic	0.92
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0050	D
Polyphen		0.85	P
Vest4		0.69
MutPred		0.87		Gain of methylation at I388 (P = 0.0014)
MVP		1.0
MPC		2.0
ClinPred		0.98	D
GERP RS		5.3
Varity_R		0.98
gMVP		0.97
Mutation Taster		=41/59	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: rs1555912675; hg19: chrX-23410798;