10-101023989-G-T

Variant names:

• chr10-101023989-G-T
• NM_001195263.2:c.306C>A
• PDZD7 p.Arg102Arg

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_001195263.2(PDZD7):​c.306C>A​(p.Arg102Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. R102R) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PDZD7 NM_001195263.2 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -4.16
• Publications: 0 publications found

Genes affected

PDZD7 (HGNC:26257): (PDZ domain containing 7) This gene encodes a ciliary protein homologous to proteins which are mutated in Usher syndrome patients, and mutations and translocations involving this gene have been associated with two types of Usher syndrome. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2010]

PDZD7 Gene-Disease associations (from GenCC):

• hearing loss, autosomal recessive

  Inheritance: Unknown Classification: DEFINITIVE Submitted by: ClinGen
• hearing loss, autosomal recessive 57

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• Usher syndrome type 2C

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).
• BP7: Synonymous conserved (PhyloP=-4.16 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001195263.2. 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
	PDZD7	NM_001195263.2	MANE Select	c.306C>A	p.Arg102Arg	synonymous	Exon 3 of 17	NP_001182192.1	Q9H5P4-3
	PDZD7	NM_001437429.1		c.306C>A	p.Arg102Arg	synonymous	Exon 3 of 17	NP_001424358.1
	PDZD7	NM_001351044.2		c.306C>A	p.Arg102Arg	synonymous	Exon 3 of 10	NP_001337973.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PDZD7	ENST00000619208.6	TSL:5 MANE Select	c.306C>A	p.Arg102Arg	synonymous	Exon 3 of 17	ENSP00000480489.1	Q9H5P4-3
	PDZD7	ENST00000912190.1		c.306C>A	p.Arg102Arg	synonymous	Exon 3 of 17	ENSP00000582249.1
	PDZD7	ENST00000645349.1		c.306C>A	p.Arg102Arg	synonymous	Exon 3 of 10	ENSP00000495283.1	A0A2R8YFN1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	0.049
DANN	Benign	0.68
PhyloP100		-4.2

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: chr10-102783746;