chrX-49205189-C-A

Position:

chrX-49205189-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001256789.3(CACNA1F):c.5849G>T(p.Arg1950Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000456 in 1,097,076 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. 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. R1950C) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 23)

Exomes 𝑓: 0.0000046 ( 0 hom. 1 hem. )

Consequence

CACNA1F
NM_001256789.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0940

Variant links:

Genes affected

CACNA1F (HGNC:1393): (calcium voltage-gated channel subunit alpha1 F) This gene encodes a multipass transmembrane protein that functions as an alpha-1 subunit of the voltage-dependent calcium channel, which mediates the influx of calcium ions into the cell. The encoded protein forms a complex of alpha-1, alpha-2/delta, beta, and gamma subunits in a 1:1:1:1 ratio. Mutations in this gene can cause X-linked eye disorders, including congenital stationary night blindness type 2A, cone-rod dystropy, and Aland Island eye disease. Alternatively spliced transcript variants encoding multiple isoforms have been observed. [provided by RefSeq, Aug 2013]

CACNA1F links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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=0.17961496).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CACNA1F	NM_001256789.3 linkuse as main transcript	c.5849G>T	p.Arg1950Leu	missense_variant	48/48	ENST00000323022.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CACNA1F	ENST00000323022.10 linkuse as main transcript	c.5849G>T	p.Arg1950Leu	missense_variant	48/48	1	NM_001256789.3		O60840-2
CACNA1F	ENST00000376265.2 linkuse as main transcript	c.5882G>T	p.Arg1961Leu	missense_variant	48/48	1		P1	O60840-1
CACNA1F	ENST00000376251.5 linkuse as main transcript	c.5687G>T	p.Arg1896Leu	missense_variant	48/48	1			O60840-4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000220

AC:

AN:

182143

Hom.:

AF XY:

0.0000150

AC XY:

AN XY:

66827

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000110

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000222

GnomAD4 exome

AF:

0.00000456

AC:

AN:

1097076

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

362496

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000142

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.0000264

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Apr 20, 2022

This sequence change replaces arginine, which is basic and polar, with leucine, which is neutral and non-polar, at codon 1961 of the CACNA1F protein (p.Arg1961Leu). This variant is present in population databases (rs782337448, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with CACNA1F-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.22

CADD

Benign

DANN

Benign

0.66

DEOGEN2

Benign

0.24

.;.;T

FATHMM_MKL

Benign

0.44

LIST_S2

Benign

0.81

T;T;T

M_CAP

Pathogenic

0.47

MetaRNN

Benign

0.18

T;T;T

MetaSVM

Uncertain

-0.032

MutationAssessor

Benign

0.90

.;.;L

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.31

PROVEAN

Benign

-2.3

N;D;D

REVEL

Uncertain

0.32

Sift

Benign

0.65

T;T;T

Sift4G

Benign

0.70

T;T;T

Polyphen

0.53

.;.;P

Vest4

0.28

MutPred

0.44

.;.;Gain of sheet (P = 0.0507);

MVP

0.66

MPC

0.28

ClinPred

0.066

GERP RS

2.3

Varity_R

0.12

gMVP

0.82

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over