chrX-153803772-C-A

Variant names:

• chrX-153803772-C-A
• NM_001303512.2:c.1909G>T
• PDZD4 p.Asp637Tyr

Germline classificationCancer classification (beta)

Variant summary

Our verdict is

Uncertain significance

+3 Uncertain · Warm

-7

-6

-1

0

+5

+6

+9

+10

BenignB

Likely BenignLB

UncertainVUS

Likely PathogenicLP

PathogenicP

. The variant received 3 ACMG points: 3P and 0B. O3_ModerateO6_Supporting

The NM_001303512.2(PDZD4):c.1909G>T (p.Asp637Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant is absent from the gnomAD population database at sites with sufficient sequencing coverage. In-silico predictor (REVEL) classifies this variant as likely damaging/oncogenic. Splicing prediction tools (SpliceAI) predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 25)
• Consequence: PDZD4 NM_001303512.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.10
• Publications: 0 publications found

Genes affected

PDZD4 (HGNC:21167): (PDZ domain containing 4) Predicted to be located in cell cortex. [provided by Alliance of Genome Resources, Apr 2022]

Classification according to ACGS-UK Somatic Oncogenicity v2025

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

• O3: Absent or extremely rare in gnomAD (AC ≤ 2) — O3 moderate; GnomAD: AF = absent, AC = 0 — absent/extremely rare (O3 moderate [+2])
• O6: Computational evidence supports a deleterious/oncogenic effect; Missense variant — primary computational scorer supports an oncogenic/deleterious effect

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001303512.2. 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
	PDZD4	NM_001303512.2	MANE Select	c.1909G>T	p.Asp637Tyr	missense	Exon 8 of 8	NP_001290441.1	Q17RL8
	PDZD4	NM_032512.5		c.1891G>T	p.Asp631Tyr	missense	Exon 8 of 8	NP_115901.2
	PDZD4	NM_001303515.2		c.1666G>T	p.Asp556Tyr	missense	Exon 8 of 8	NP_001290444.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PDZD4	ENST00000393758.7	TSL:1 MANE Select	c.1909G>T	p.Asp637Tyr	missense	Exon 8 of 8	ENSP00000377355.3	Q17RL8
	PDZD4	ENST00000164640.8	TSL:1	c.1891G>T	p.Asp631Tyr	missense	Exon 8 of 8	ENSP00000164640.4	Q76G19-1
	PDZD4	ENST00000544474.5	TSL:1	c.1564G>T	p.Asp522Tyr	missense	Exon 6 of 6	ENSP00000442033.1	Q76G19-2

Frequencies

GnomAD3 genomes Cov.: 25

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 25

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.34	D
BayesDel_noAF	Pathogenic	0.25
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.80	D
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Pathogenic	1.0	D
M_CAP	Pathogenic	0.60	D
MetaRNN	Pathogenic	0.87	D
MetaSVM	Uncertain	-0.15	T
MutationAssessor	Uncertain	2.7	M
PhyloP100		6.1
PrimateAI	Pathogenic	0.86	D
PROVEAN	Pathogenic	-8.7	D
REVEL	Pathogenic	0.67
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Varity_R		0.97
gMVP		1.0
Mutation Taster		=31/69	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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chrX-153069227;

ACMG debug oncogenicity

ACGS debug oncogenicity

ACMG debug germline

Submit to ClinVar