Genetic Variant APOBEC4:p.Pro182Pro (chr1-183648236-C-T) – ACMG Classification: Benign (-21 pts)

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_203454.3(APOBEC4):c.546G>A(p.Pro182Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00484 in 1,614,110 control chromosomes in the GnomAD database, including 328 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.027 ( 188 hom., cov: 32)

Exomes 𝑓: 0.0026 ( 140 hom. )

Consequence

APOBEC4
NM_203454.3 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -2.23

Publications

3 publications found

Variant links:

Genes affected

APOBEC4 (HGNC:32152): (apolipoprotein B mRNA editing enzyme catalytic polypeptide like 4) This gene encodes a member of the AID/APOBEC family of polynucleotide (deoxy)cytidine deaminases, which convert cytidine to uridine. Other AID/APOBEC family members are involved in mRNA editing, somatic hypermutation and recombination of immunoglobulin genes, and innate immunity to retroviral infection. [provided by RefSeq, Jul 2008]

APOBEC4 links:

RGL1 (HGNC:30281): (ral guanine nucleotide dissociation stimulator like 1) Predicted to be involved in regulation of catalytic activity. Predicted to be located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

RGL1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.78).

BP6

Variant 1-183648236-C-T is Benign according to our data. Variant chr1-183648236-C-T is described in ClinVar as Benign. ClinVar VariationId is 789700.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-2.23 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0901 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_203454.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
APOBEC4	NM_203454.3	MANE Select	c.546G>A	p.Pro182Pro	synonymous	Exon 2 of 2	NP_982279.1	Q8WW27
RGL1	NM_015149.6		c.-33+11735C>T		intron	N/A	NP_055964.3
RGL1	NM_001297669.3		c.-143+11735C>T		intron	N/A	NP_001284598.1	B7Z2W5

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
APOBEC4	ENST00000308641.6	TSL:1 MANE Select	c.546G>A	p.Pro182Pro	synonymous	Exon 2 of 2	ENSP00000310622.4	Q8WW27
RGL1	ENST00000304685.8	TSL:1	c.-33+11735C>T		intron	N/A	ENSP00000303192.3	Q9NZL6-2
APOBEC4	ENST00000481562.1	TSL:3	n.246-439G>A		intron	N/A

Frequencies

GnomAD3 genomes

AF:

0.0266

AC:

4045

AN:

152130

Hom.:

189

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0927

Gnomad AMI

AF:

0.00219

Gnomad AMR

AF:

0.0102

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000176

Gnomad OTH

AF:

0.0167

GnomAD2 exomes

AF:

0.00672

AC:

1690

AN:

251334

AF XY:

0.00492

show subpopulations

Gnomad AFR exome

AF:

0.0957

Gnomad AMR exome

AF:

0.00298

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000123

Gnomad OTH exome

AF:

0.00179

GnomAD4 exome

AF:

0.00257

AC:

3756

AN:

1461862

Hom.:

140

Cov.:

AF XY:

0.00224

AC XY:

1626

AN XY:

727224

show subpopulations

African (AFR)

AF:

0.0938

AC:

3139

AN:

33480

American (AMR)

AF:

0.00360

AC:

161

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000371

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00225

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000647

AC:

AN:

1111990

Other (OTH)

AF:

0.00561

AC:

339

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.489

Heterozygous variant carriers

234

468

703

937

1171

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

104

208

312

416

520

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0266

AC:

4051

AN:

152248

Hom.:

188

Cov.:

AF XY:

0.0259

AC XY:

1926

AN XY:

74452

show subpopulations

African (AFR)

AF:

0.0925

AC:

3843

AN:

41526

American (AMR)

AF:

0.0102

AC:

156

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.000207

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000176

AC:

AN:

68028

Other (OTH)

AF:

0.0166

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

Heterozygous variant carriers

184

367

551

734

918

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

132

176

220

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0101

Hom.:

Bravo

AF:

0.0302

Asia WGS

AF:

0.00491

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.000296

ClinVar

ClinVar submissions

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.78

CADD

Benign

0.38

(source)

DANN

Benign

0.84

PhyloP100

-2.2

Mutation Taster

=100/0

polymorphism (auto)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over