Genetic Variant HLA-DRB1:p.Arg195Arg (chr6-32581624-T-G) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP7

The NM_002124.4(HLA-DRB1):c.585A>C(p.Arg195Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 7)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

HLA-DRB1
NM_002124.4 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.465

Publications

20 publications found

Variant links:

Genes affected

HLA-DRB1 (HGNC:4948): (major histocompatibility complex, class II, DR beta 1) HLA-DRB1 belongs to the HLA class II beta chain paralogs. The class II molecule is a heterodimer consisting of an alpha (DRA) and a beta chain (DRB), both anchored in the membrane. It plays a central role in the immune system by presenting peptides derived from extracellular proteins. Class II molecules are expressed in antigen presenting cells. The beta chain is approximately 26-28 kDa. It is encoded by 6 exons. Exon one encodes the leader peptide; exons 2 and 3 encode the two extracellular domains; exon 4 encodes the transmembrane domain; and exon 5 encodes the cytoplasmic tail. Within the DR molecule the beta chain contains all the polymorphisms specifying the peptide binding specificities. Hundreds of DRB1 alleles have been described and some alleles have increased frequencies associated with certain diseases or conditions. For example, DRB1*1302 has been related to acute and chronic hepatitis B virus persistence. There are multiple pseudogenes of this gene. [provided by RefSeq, Jul 2020]

HLA-DRB1 Gene-Disease associations (from GenCC):

systemic lupus erythematosus
Inheritance: Unknown Classification: SUPPORTIVE Submitted by: Orphanet

HLA-DRB1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.66).

BP7

Synonymous conserved (PhyloP=0.465 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HLA-DRB1	NM_002124.4 link	c.585A>C	p.Arg195Arg	synonymous_variant	Exon 3 of 6	ENST00000360004.6	NP_002115.2	P01911D7RIH8A0A224MM52X5DNQ0

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HLA-DRB1	ENST00000360004.6 link	c.585A>C	p.Arg195Arg	synonymous_variant	Exon 3 of 6	6	NM_002124.4	ENSP00000353099.5		P01911

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

49978

Hom.:

Cov.:

Gnomad AFR

AF:

0.00

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

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1115522

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

560738

African (AFR)

AF:

0.00

AC:

AN:

23762

American (AMR)

AF:

0.00

AC:

AN:

38624

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

20610

East Asian (EAS)

AF:

0.00

AC:

AN:

32418

South Asian (SAS)

AF:

0.00

AC:

AN:

69342

European-Finnish (FIN)

AF:

0.00

AC:

AN:

43258

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4196

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

837492

Other (OTH)

AF:

0.00

AC:

AN:

45820

GnomAD4 genome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

49978

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

23914

African (AFR)

AF:

0.00

AC:

AN:

12126

American (AMR)

AF:

0.00

AC:

AN:

4230

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

1072

East Asian (EAS)

AF:

0.00

AC:

AN:

2036

South Asian (SAS)

AF:

0.00

AC:

AN:

1612

European-Finnish (FIN)

AF:

0.00

AC:

AN:

2938

Middle Eastern (MID)

AF:

0.00

AC:

AN:

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

24950

Other (OTH)

AF:

0.00

AC:

AN:

588

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.66

CADD

Benign

(source)

DANN

Benign

0.63

PhyloP100

0.47

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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over