NM_033056.4:c.875C>G

Variant names:

• chr10-54317272-G-C
• rs138744579
• NM_033056.4:c.875C>G

Variant summary

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

The NM_033056.4(PCDH15):​c.875C>G​(p.Pro292Arg) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,460,086 control chromosomes in the GnomAD database, with no homozygous occurrence. 2/3 splice prediction tools predict no significant impact on normal splicing. 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. P292L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: PCDH15 NM_033056.4 missense, splice_region
• Scores: Splicing: ADA: 0.9243
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: 9.77
• Publications: 5 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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PCDH15	NM_033056.4	c.875C>G	p.Pro292Arg	missense_variant, splice_region_variant	Exon 8 of 33	ENST00000320301.11	NP_149045.3
PCDH15	NM_001384140.1	c.875C>G	p.Pro292Arg	missense_variant, splice_region_variant	Exon 8 of 38	ENST00000644397.2	NP_001371069.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PCDH15	ENST00000320301.11	c.875C>G	p.Pro292Arg	missense_variant, splice_region_variant	Exon 8 of 33	1	NM_033056.4	ENSP00000322604.6
PCDH15	ENST00000644397.2	c.875C>G	p.Pro292Arg	missense_variant, splice_region_variant	Exon 8 of 38		NM_001384140.1	ENSP00000495195.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251218 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000880

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1460086 Hom.: 0 Cov.: 32 AF XY: 0.00000688 AC XY: 5 AN XY: 726486

African (AFR) AF: 0.00 AC: 0 AN: 33416

American (AMR) AF: 0.00 AC: 0 AN: 44694

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26110

East Asian (EAS) AF: 0.00 AC: 0 AN: 39676

South Asian (SAS) AF: 0.00 AC: 0 AN: 86224

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53408

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5760

European-Non Finnish (NFE) AF: 0.00000810 AC: 9 AN: 1110460

Other (OTH) AF: 0.00 AC: 0 AN: 60338

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Usher syndrome type 1F Uncertain:2

Apr 16, 2018

Counsyl

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -

Jan 24, 2023

Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: curation

The p.Pro292Arg variant in PCDH15 has been reported in 1 individual with Usher syndrome type 1F (PMID: 24498627) and has been identified in 0.0009% (1/113578) of European (non-Finnish) chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org; dbSNP ID: rs138744579). Although this variant has been seen in the general population in a heterozygous state, its frequency is low enough to be consistent with a recessive carrier frequency. This variant has also been reported in ClinVar (Variation ID#: 557886) and has been interpreted as a variant of uncertain significance by Counsyl and CeGaT Center for Human Genetics Tuebingen. Computational prediction tools and conservation analyses do not provide strong support for or against an impact to the protein. In summary, the clinical significance of the p.Pro292Arg variant is uncertain. ACMG/AMP Criteria applied: PM2_supporting (Richards 2015). -

not provided Uncertain:1

Aug 01, 2019

CeGaT Center for Human Genetics Tuebingen

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.52
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.17
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.068	T;.;.;.;.;T;.;.;T;.;T;.;.;T;.;T;.;.;.;.;.;.;T;.
Eigen	Pathogenic	0.80
Eigen_PC	Pathogenic	0.75
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.88	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
M_CAP	Benign	0.071	D
MetaRNN	Uncertain	0.71	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Benign	-0.34	T
MutationAssessor	Uncertain	2.6	.;.;.;.;M;.;.;.;.;.;.;M;.;.;.;.;.;.;.;.;.;.;M;M
PhyloP100		9.8
PrimateAI	Uncertain	0.57	T
PROVEAN	Pathogenic	-5.1	D;.;.;D;.;.;D;D;.;D;.;D;D;.;D;.;.;D;D;D;.;D;D;D
REVEL	Uncertain	0.49
Sift	Benign	0.038	D;.;.;D;.;.;D;D;.;D;.;T;D;.;D;.;.;D;D;T;.;T;D;D
Sift4G	Uncertain	0.0050	D;.;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
Polyphen		1.0, 1.0, 1.0, 1.0, 0.91	.;.;.;.;.;.;.;.;.;.;.;.;D;.;D;.;.;D;D;D;.;D;D;P
Vest4		0.90
MutPred		0.28		Gain of sheet (P = 0.0221);Gain of sheet (P = 0.0221);.;Gain of sheet (P = 0.0221);Gain of sheet (P = 0.0221);.;Gain of sheet (P = 0.0221);Gain of sheet (P = 0.0221);Gain of sheet (P = 0.0221);Gain of sheet (P = 0.0221);.;Gain of sheet (P = 0.0221);Gain of sheet (P = 0.0221);.;.;.;Gain of sheet (P = 0.0221);Gain of sheet (P = 0.0221);Gain of sheet (P = 0.0221);.;.;Gain of sheet (P = 0.0221);Gain of sheet (P = 0.0221);Gain of sheet (P = 0.0221);
MVP		0.86
MPC		0.23
ClinPred		0.99	D
GERP RS		4.8
Varity_R		0.54
gMVP		0.66
Mutation Taster		=5/95	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.92
dbscSNV1_RF	Pathogenic	0.83
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: rs138744579; hg19: chr10-56077032;