rs1447398281

Variant names:

• chr10-84194800-C-G
• rs1447398281
• NM_033100.4:c.40C>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_033100.4(CDHR1):​c.40C>G​(p.Leu14Val) variant causes a missense 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. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: CDHR1 NM_033100.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 1.50

Genes affected

CDHR1 (HGNC:14550): (cadherin related family member 1) This gene belongs to the cadherin superfamily of calcium-dependent cell adhesion molecules. The encoded protein is a photoreceptor-specific cadherin that plays a role in outer segment disc morphogenesis. Mutations in this gene are associated with inherited retinal dystrophies. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2013]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.115668535).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CDHR1	NM_033100.4	c.40C>G	p.Leu14Val	missense_variant	Exon 1 of 17	ENST00000623527.4	NP_149091.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CDHR1	ENST00000623527.4	c.40C>G	p.Leu14Val	missense_variant	Exon 1 of 17	1	NM_033100.4	ENSP00000485478.1
CDHR1	ENST00000332904.7	c.40C>G	p.Leu14Val	missense_variant	Exon 1 of 17	1		ENSP00000331063.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Sep 30, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.40C>G (p.L14V) alteration is located in exon 1 (coding exon 1) of the CDHR1 gene. This alteration results from a C to G substitution at nucleotide position 40, causing the leucine (L) at amino acid position 14 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided Uncertain:1

Feb 02, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt CDHR1 protein function. This variant has not been reported in the literature in individuals affected with CDHR1-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces leucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 14 of the CDHR1 protein (p.Leu14Val). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.083
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.45
CADD	Benign	21
DANN	Benign	0.92
DEOGEN2	Benign	0.065	T;.
Eigen	Benign	-0.65
Eigen_PC	Benign	-0.49
FATHMM_MKL	Benign	0.38	N
LIST_S2	Benign	0.55	T;T
M_CAP	Uncertain	0.17	D
MetaRNN	Benign	0.12	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.8	L;L
PrimateAI	Uncertain	0.69	T
PROVEAN	Benign	-0.14	.;N
REVEL	Benign	0.041
Sift	Benign	0.22	.;T
Sift4G	Benign	0.22	T;T
Polyphen		0.0	B;B
Vest4		0.16
MutPred		0.46		Gain of sheet (P = 1e-04);Gain of sheet (P = 1e-04);
MVP		0.25
ClinPred		0.11	T
GERP RS		1.9
Varity_R		0.086
gMVP		0.32

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1447398281; hg19: chr10-85954556;