Genetic Variant NM_014576.4:c.475G>T (chr10-50836203-C-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_014576.4(A1CF):c.475G>T(p.Val159Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000049 in 1,613,882 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000053 ( 0 hom. )

Consequence

A1CF
NM_014576.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.63

Variant links:

Genes affected

A1CF (HGNC:24086): (APOBEC1 complementation factor) Mammalian apolipoprotein B mRNA undergoes site-specific C to U deamination, which is mediated by a multi-component enzyme complex containing a minimal core composed of APOBEC-1 and a complementation factor encoded by this gene. The gene product has three non-identical RNA recognition motifs and belongs to the hnRNP R family of RNA-binding proteins. It has been proposed that this complementation factor functions as an RNA-binding subunit and docks APOBEC-1 to deaminate the upstream cytidine. Studies suggest that the protein may also be involved in other RNA editing or RNA processing events. Several transcript variants encoding a few different isoforms have been found for this gene. [provided by RefSeq, Nov 2010]

A1CF links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
A1CF	NM_014576.4 link	c.475G>T	p.Val159Phe	missense_variant	Exon 6 of 13	ENST00000373997.8	NP_055391.2	Q9NQ94-2A0A024QZJ5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
A1CF	ENST00000373997.8 link	c.475G>T	p.Val159Phe	missense_variant	Exon 6 of 13	1	NM_014576.4	ENSP00000363109.3		Q9NQ94-2

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152154

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000279

AC:

AN:

251028

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135634

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000163

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000353

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000527

AC:

AN:

1461728

Hom.:

Cov.:

AF XY:

0.0000454

AC XY:

AN XY:

727176

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000151

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000612

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152154

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74316

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 03, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.499G>T (p.V167F) alteration is located in exon 8 (coding exon 4) of the A1CF gene. This alteration results from a G to T substitution at nucleotide position 499, causing the valine (V) at amino acid position 167 to be replaced by a phenylalanine (F). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.60

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.17

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.25

.;.;.;.;T;.;.;T

Eigen

Uncertain

0.37

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.91

.;D;D;D;D;.;.;D

M_CAP

Benign

0.022

MetaRNN

Uncertain

0.42

T;T;T;T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

L;.;L;.;L;L;.;.

PrimateAI

Uncertain

0.77

PROVEAN

Uncertain

-4.4

D;.;D;.;D;D;D;D

REVEL

Uncertain

0.29

Sift

Uncertain

0.020

D;.;D;.;D;D;D;T

Sift4G

Uncertain

0.0050

D;D;D;D;D;D;D;.

Polyphen

1.0

D;.;D;P;B;D;P;.

Vest4

0.80

MutPred

0.51

Gain of ubiquitination at K158 (P = 0.1295);.;Gain of ubiquitination at K158 (P = 0.1295);.;Gain of ubiquitination at K158 (P = 0.1295);Gain of ubiquitination at K158 (P = 0.1295);.;Gain of ubiquitination at K158 (P = 0.1295);

MVP

0.40

MPC

0.95

ClinPred

0.70

GERP RS

6.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.45

gMVP

0.85

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