NM_145200.5:c.646C>A

Variant names:

• chr11-67457677-C-A
• rs150115958
• NM_145200.5:c.646C>A

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_145200.5(CABP4):​c.646C>A​(p.Arg216Arg) 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.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: CABP4 NM_145200.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.21
• Publications: 13 publications found

Genes affected

CABP4 (HGNC:1386): (calcium binding protein 4) This gene encodes a member of the CABP family of calcium binding protein characterized by four EF-hand motifs. Mutations in this gene are associated with congenital stationary night blindness type 2B. Three transcript variants encoding two different isoforms have been found for this gene. [provided by RefSeq, Jul 2014]

CABP4 Gene-Disease associations (from GenCC):

• cone-rod synaptic disorder, congenital nonprogressive

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
• autosomal dominant nocturnal frontal lobe epilepsy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• congenital stationary night blindness

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.19).
• BP7: Synonymous conserved (PhyloP=1.21 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_145200.5. 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
	CABP4	NM_145200.5	MANE Select	c.646C>A	p.Arg216Arg	synonymous	Exon 4 of 6	NP_660201.1
	CABP4	NM_001300895.3		c.331C>A	p.Arg111Arg	synonymous	Exon 4 of 6	NP_001287824.1
	CABP4	NM_001300896.3		c.331C>A	p.Arg111Arg	synonymous	Exon 5 of 7	NP_001287825.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CABP4	ENST00000325656.7	TSL:1 MANE Select	c.646C>A	p.Arg216Arg	synonymous	Exon 4 of 6	ENSP00000324960.5
	CABP4	ENST00000438189.6	TSL:1	c.331C>A	p.Arg111Arg	synonymous	Exon 5 of 7	ENSP00000401555.2
	CABP4	ENST00000545777.1	TSL:3	n.*302C>A		downstream_gene	N/A	ENSP00000439145.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1428704 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 707512

African (AFR) AF: 0.00 AC: 0 AN: 32982

American (AMR) AF: 0.00 AC: 0 AN: 39374

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25528

East Asian (EAS) AF: 0.00 AC: 0 AN: 38204

South Asian (SAS) AF: 0.00 AC: 0 AN: 81592

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50668

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5716

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1095398

Other (OTH) AF: 0.00 AC: 0 AN: 59242

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.19
CADD	Benign	14
DANN	Benign	0.81
PhyloP100		1.2

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

Other links and lift over

dbSNP: rs150115958; hg19: chr11-67225148;