Genetic Variant HLA-DOA:c.82+473C>G (chr6-33008982-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is The variant received -2 classification points (ACMG Germline Pathogenicity v2019). PM2BP4_Strong

The NM_002119.4(HLA-DOA):c.82+473C>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a cumulative frequency of 0.0000263 (AC=4) in the gnomAD database across 151,880 control chromosomes (no homozygotes observed). The grpmax filtering allele frequency (95% CI) is 0.0000326. In-silico predictor (BayesDel (noAF)) classifies this variant as likely benign. Splicing prediction tools (SpliceAI) predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 31)

Consequence

HLA-DOA
NM_002119.4 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.194

Publications

36 publications found

Variant links:

Genes affected

HLA-DOA (HGNC:4936): (major histocompatibility complex, class II, DO alpha) HLA-DOA belongs to the HLA class II alpha chain paralogues. HLA-DOA forms a heterodimer with HLA-DOB. The heterodimer, HLA-DO, is found in lysosomes in B cells and regulates HLA-DM-mediated peptide loading on MHC class II molecules. In comparison with classical HLA class II molecules, this gene exhibits very little sequence variation, especially at the protein level. [provided by RefSeq, Jul 2008]

HLA-DOA links:

Genome browser will be placed here

new If you want to explore the variant's impact on the transcript NM_002119.4, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

Classification according to ACMG Germline Pathogenicity v2019

Classification was made for transcript

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

PM2

Very rare in gnomAD for AR/unknown gene (popmax AF < threshold/10) — PM2; GnomAD popmax AF = 0.0000326 — very rare for unknown gene (threshold 0.001) — PM2 moderate.

BP4

Computational evidence supports benign — no pathogenic computational or splicing signal (BP4); Splicing verdict: benign (Strong).; Germline computational verdict: benign (Strong).

Variant Effect in Transcripts

Automated classification analysis was done for transcript: NM_002119.4. You can select a different transcript below to see updated classification assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HLA-DOA	NM_002119.4	MANE Select	c.82+473C>G		intron	N/A	NP_002110.1	A0A1V0E3R8

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
HLA-DOA	ENST00000229829.7	TSL:6 MANE Select	c.82+473C>G	intron	N/A	ENSP00000229829.3	P06340
HLA-DOA	ENST00000892664.1		c.82+473C>G	intron	N/A	ENSP00000562723.1
HLA-DOA	ENST00000374813.1	TSL:6	c.82+473C>G	intron	N/A	ENSP00000363946.1	F6WU08

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

151880

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000968

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome

AF:

0.0000263

AC:

AN:

151880

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74176

show subpopulations

African (AFR)

AF:

0.0000968

AC:

AN:

41306

American (AMR)

AF:

0.00

AC:

AN:

15274

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10560

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67962

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.00

Hom.:

108267

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.89

CADD

Benign

2.0

(source)

DANN

Benign

0.22

PhyloP100

-0.19

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

Classification according to ACMG Germline Pathogenicity v2019

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over