10-54236861-G-A

Variant names:

• chr10-54236861-G-A
• rs397517469
• NM_033056.4:c.947C>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_033056.4(PCDH15):​c.947C>T​(p.Pro316Leu) variant causes a missense 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P316A) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PCDH15 NM_033056.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.63
• Publications: 3 publications found

Genes affected

PCDH15 (HGNC:14674): (protocadherin related 15) This gene is a member of the cadherin superfamily. Family members encode integral membrane proteins that mediate calcium-dependent cell-cell adhesion. It plays an essential role in maintenance of normal retinal and cochlear function. Mutations in this gene result in hearing loss and Usher Syndrome Type IF (USH1F). Extensive alternative splicing resulting in multiple isoforms has been observed in the mouse ortholog. Similar alternatively spliced transcripts are inferred to occur in human, and additional variants are likely to occur. [provided by RefSeq, Dec 2008]

PCDH15 Gene-Disease associations (from GenCC):

• autosomal recessive nonsyndromic hearing loss 23

  Inheritance: AR Classification: DEFINITIVE, STRONG, LIMITED Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), PanelApp Australia
• Usher syndrome type 1

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• Usher syndrome type 1F

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), PanelApp Australia
• hearing loss, autosomal recessive

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• nonsyndromic genetic hearing loss

  Inheritance: AR Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_033056.4. 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
	PCDH15	NM_033056.4	MANE Plus Clinical	c.947C>T	p.Pro316Leu	missense	Exon 9 of 33	NP_149045.3
	PCDH15	NM_001384140.1	MANE Select	c.947C>T	p.Pro316Leu	missense	Exon 9 of 38	NP_001371069.1
	PCDH15	NM_001142763.2		c.962C>T	p.Pro321Leu	missense	Exon 10 of 35	NP_001136235.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PCDH15	ENST00000320301.11	TSL:1 MANE Plus Clinical	c.947C>T	p.Pro316Leu	missense	Exon 9 of 33	ENSP00000322604.6
	PCDH15	ENST00000644397.2	MANE Select	c.947C>T	p.Pro316Leu	missense	Exon 9 of 38	ENSP00000495195.1
	PCDH15	ENST00000395445.6	TSL:1	c.947C>T	p.Pro316Leu	missense	Exon 9 of 35	ENSP00000378832.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Nov 29, 2012

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The Pro316Leu variant in PCDH15 has not been reported in the literature nor prev iously identified by our laboratory. Computational analyses (biochemical amino a cid properties, conservation, AlignGVGD, PolyPhen2, and SIFT) suggest that the P ro316Leu variant may impact the protein, though this information is not predicti ve enough to determine pathogenicity. In summary, additional data is needed to d etermine the clinical significance of this variant.

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Uncertain	0.021	T
BayesDel_noAF	Benign	-0.21
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.074	T
Eigen	Uncertain	0.67
Eigen_PC	Uncertain	0.65
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Uncertain	0.13	D
MetaRNN	Uncertain	0.55	D
MetaSVM	Uncertain	-0.23	T
MutationAssessor	Benign	1.9	L
PhyloP100		9.6
PrimateAI	Uncertain	0.63	T
PROVEAN	Pathogenic	-5.7	D
REVEL	Benign	0.28
Sift	Uncertain	0.0040	D
Sift4G	Uncertain	0.0020	D
Polyphen		0.97	D
Vest4		0.74
MutPred		0.31		Loss of disorder (P = 0.0306)
MVP		0.88
MPC		0.20
ClinPred		0.99	D
GERP RS		5.2
Varity_R		0.39
gMVP		0.55
Mutation Taster		=40/60	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: rs397517469; hg19: chr10-55996621;