chr10-84200639-A-C

Variant names:

• chr10-84200639-A-C
• NM_033100.4:c.477A>C
• CDHR1 p.Ala159Ala

Variant summary

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

The NM_033100.4(CDHR1):​c.477A>C​(p.Ala159Ala) 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. A159A) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CDHR1 NM_033100.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.03
• Publications: 0 publications found

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]

CDHR1 Gene-Disease associations (from GenCC):

• cone-rod dystrophy 15

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
• retinitis pigmentosa 65

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• cone-rod dystrophy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• retinitis pigmentosa

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

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=-0.99).
• BP7: Synonymous conserved (PhyloP=-2.03 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_033100.4. 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
	CDHR1	NM_033100.4	MANE Select	c.477A>C	p.Ala159Ala	synonymous	Exon 6 of 17	NP_149091.1	Q96JP9-1
	CDHR1	NM_001171971.3		c.477A>C	p.Ala159Ala	synonymous	Exon 6 of 17	NP_001165442.1	Q96JP9-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CDHR1	ENST00000623527.4	TSL:1 MANE Select	c.477A>C	p.Ala159Ala	synonymous	Exon 6 of 17	ENSP00000485478.1	Q96JP9-1
	CDHR1	ENST00000332904.7	TSL:1	c.477A>C	p.Ala159Ala	synonymous	Exon 6 of 17	ENSP00000331063.3	Q96JP9-2
	CDHR1	ENST00000926454.1		c.426A>C	p.Ala142Ala	synonymous	Exon 5 of 16	ENSP00000596513.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 38

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.99
CADD	Benign	0.014
DANN	Benign	0.28
PhyloP100		-2.0

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: chr10-85960395;