chr8-95247696-T-C

Position:

• chr8-95247696-T-C

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1 PM2 PP3_Moderate PP5

The NM_177965.4(CFAP418):​c.545A>G​(p.Gln182Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Synonymous variant affecting the same amino acid position (i.e. Q182Q) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CFAP418 NM_177965.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:2
• Conservation: PhyloP100: 7.34

Genes affected

CFAP418 (HGNC:27232): (cilia and flagella associated protein 418) This gene encodes a ubiquitously expressed protein of unknown function. It has high levels of mRNA expression in the brain, heart, and retina and the protein co-localizes with polyglutamylated tubulin at the base of the primary cilium in human retinal pigment epithelial cells. Mutations in this gene have been associated with autosomal recessive cone-rod dystrophy (arCRD) and retinitis pigmentosa (arRP). [provided by RefSeq, Mar 2012]

CFAP418-AS1 (HGNC:50444): (CFAP418 antisense RNA 1)

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM1: In a chain Cilia- and flagella-associated protein 418 (size 206) in uniprot entity CF418_HUMAN there are 14 pathogenic changes around while only 4 benign (78%) in NM_177965.4
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.906
• PP5: Variant 8-95247696-T-C is Pathogenic according to our data. Variant chr8-95247696-T-C is described in ClinVar as [Pathogenic]. Clinvar id is 31195.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr8-95247696-T-C is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CFAP418	NM_177965.4	c.545A>G	p.Gln182Arg	missense_variant	6/6	ENST00000286688.6
CFAP418	NM_001363260.1	c.449A>G	p.Gln150Arg	missense_variant	5/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CFAP418	ENST00000286688.6	c.545A>G	p.Gln182Arg	missense_variant	6/6	1	NM_177965.4	P1
CFAP418-AS1	ENST00000517655.1	n.521+42384T>C		intron_variant, non_coding_transcript_variant		4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: no assertion criteria provided

Submissions by phenotype

Retinitis pigmentosa 64 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jan 13, 2012

- -

Retinitis pigmentosa Pathogenic:1

Pathogenic, no assertion criteria provided

research

Sharon lab, Hadassah-Hebrew University Medical Center

Jun 23, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.83
BayesDel_addAF	Pathogenic	0.46	D
BayesDel_noAF	Pathogenic	0.42
CADD	Uncertain	26
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.85	D
Eigen	Pathogenic	0.83
Eigen_PC	Pathogenic	0.78
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.87	D
M_CAP	Uncertain	0.20	D
MetaRNN	Pathogenic	0.91	D
MetaSVM	Pathogenic	0.86	D
MutationAssessor	Uncertain	2.9	M
MutationTaster	Benign	1.0	D
PROVEAN	Uncertain	-4.0	D
REVEL	Pathogenic	0.84
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.97
MutPred		0.48		Gain of MoRF binding (P = 0.0284);
MVP		0.93
MPC		0.75
ClinPred		1.0	D
GERP RS		5.4
Varity_R		0.83
gMVP		0.87

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

Publications

LitVar

Other links and lift over

dbSNP: rs387907137; hg19: chr8-96259924;