22-39080975-C-G

Variant names:

• chr22-39080975-C-G
• rs138285438
• NM_021822.4:c.214C>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_021822.4(APOBEC3G):​c.214C>G​(p.His72Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000353 in 1,613,930 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000026 (0 hom., cov: 31)
  • Exomes 𝑓: 0.000036 (0 hom.)
• Consequence: APOBEC3G NM_021822.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.22
• Publications: 1 publications found

Genes affected

APOBEC3G (HGNC:17357): (apolipoprotein B mRNA editing enzyme catalytic subunit 3G) This gene is a member of the cytidine deaminase gene family. It is one of seven related genes or pseudogenes found in a cluster, thought to result from gene duplication, on chromosome 22. Members of the cluster encode proteins that are structurally and functionally related to the C to U RNA-editing cytidine deaminase APOBEC1. The protein encoded by this gene catalyzes site-specific deamination of both RNA and single-stranded DNA. The encoded protein has been found to be a specific inhibitor of human immunodeficiency virus-1 (HIV-1) infectivity. [provided by RefSeq, Mar 2017]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.04616213).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_021822.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	APOBEC3G	NM_021822.4	MANE Select	c.214C>G	p.His72Asp	missense	Exon 3 of 8	NP_068594.1	Q9HC16-1
	APOBEC3G	NM_001349436.1		c.181C>G	p.His61Asp	missense	Exon 3 of 8	NP_001336365.1
	APOBEC3G	NM_001349437.2		c.13C>G	p.His5Asp	missense	Exon 2 of 7	NP_001336366.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	APOBEC3G	ENST00000407997.4	TSL:1 MANE Select	c.214C>G	p.His72Asp	missense	Exon 3 of 8	ENSP00000385057.3	Q9HC16-1
	APOBEC3G	ENST00000960612.1		c.214C>G	p.His72Asp	missense	Exon 3 of 8	ENSP00000630671.1
	APOBEC3G	ENST00000851527.1		c.171+1890C>G		intron	N/A	ENSP00000521586.1

Frequencies

GnomAD3 genomes AF: 0.0000263 AC: 4 AN: 152060 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000656

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000441

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000318 AC: 8 AN: 251214 AF XY: 0.0000516

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000704

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000363 AC: 53 AN: 1461870 Hom.: 0 Cov.: 34 AF XY: 0.0000385 AC XY: 28 AN XY: 727232

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.0000224 AC: 1 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000441 AC: 49 AN: 1111998

Other (OTH) AF: 0.0000331 AC: 2 AN: 60396

GnomAD4 genome AF: 0.0000263 AC: 4 AN: 152060 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 74292

African (AFR) AF: 0.00 AC: 0 AN: 41374

American (AMR) AF: 0.0000656 AC: 1 AN: 15254

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5194

South Asian (SAS) AF: 0.00 AC: 0 AN: 4818

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10612

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000441 AC: 3 AN: 68024

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.000125 Hom.: 0

Bravo AF: 0.0000378

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.0000412 AC: 5

EpiCase AF: 0.0000545

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.16
BayesDel_addAF	Benign	-0.36	T
BayesDel_noAF	Benign	-0.57
CADD	Benign	0.013
DANN	Benign	0.33
DEOGEN2	Benign	0.011	T
Eigen	Benign	-1.6
Eigen_PC	Benign	-1.7
FATHMM_MKL	Benign	0.0046	N
LIST_S2	Benign	0.51	T
M_CAP	Benign	0.024	T
MetaRNN	Benign	0.046	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.085	N
PhyloP100		-1.2
PROVEAN	Benign	-0.83	N
REVEL	Benign	0.064
Sift	Benign	0.94	T
Sift4G	Benign	0.61	T
Polyphen		0.0020	B
Vest4		0.070
MVP		0.22
MPC		0.25
ClinPred		0.014	T
GERP RS		-1.7
Varity_R		0.060
gMVP		0.35
Mutation Taster		=99/1	polymorphism

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: rs138285438; hg19: chr22-39476980;