6-33089421-G-C

Variant names:

• chr6-33089421-G-C
• rs3091282
• NM_002121.6:c.*2887G>C

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_002121.6(HLA-DPB1):​c.*2887G>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.38 in 151,956 control chromosomes in the GnomAD database, including 12,423 homozygotes. 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 0.38 (12423 hom., cov: 31)
• Consequence: HLA-DPB1 NM_002121.6 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.937
• Publications: 13 publications found

Genes affected

HLA-DPB1 (HGNC:4940): (major histocompatibility complex, class II, DP beta 1) HLA-DPB belongs to the HLA class II beta chain paralogues. This class II molecule is a heterodimer consisting of an alpha (DPA) and a beta chain (DPB), 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 (APC: B lymphocytes, dendritic cells, macrophages). The beta chain is approximately 26-28 kDa and its gene contains 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 DP molecule both the alpha chain and the beta chain contain the polymorphisms specifying the peptide binding specificities, resulting in up to 4 different molecules. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.94).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.621 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HLA-DPB1	NM_002121.6	c.*2887G>C		3_prime_UTR_variant	Exon 6 of 6	ENST00000418931.7	NP_002112.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HLA-DPB1	ENST00000418931.7	c.*2887G>C		3_prime_UTR_variant	Exon 6 of 6	6	NM_002121.6	ENSP00000408146.2
HLA-DPB1	ENST00000428835.6	c.*2887G>C		3_prime_UTR_variant	Exon 6 of 6	6		ENSP00000412654.2

Frequencies

GnomAD3 genomes AF: 0.380 AC: 57743 AN: 151838 Hom.: 12400 Cov.: 31

Gnomad AFR AF: 0.570

Gnomad AMI AF: 0.143

Gnomad AMR AF: 0.299

Gnomad ASJ AF: 0.186

Gnomad EAS AF: 0.639

Gnomad SAS AF: 0.342

Gnomad FIN AF: 0.252

Gnomad MID AF: 0.247

Gnomad NFE AF: 0.300

Gnomad OTH AF: 0.386

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

GnomAD4 genome AF: 0.380 AC: 57795 AN: 151956 Hom.: 12423 Cov.: 31 AF XY: 0.373 AC XY: 27720 AN XY: 74248

African (AFR) AF: 0.569 AC: 23571 AN: 41390

American (AMR) AF: 0.299 AC: 4573 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.186 AC: 644 AN: 3468

East Asian (EAS) AF: 0.640 AC: 3300 AN: 5160

South Asian (SAS) AF: 0.340 AC: 1638 AN: 4814

European-Finnish (FIN) AF: 0.252 AC: 2668 AN: 10572

Middle Eastern (MID) AF: 0.248 AC: 73 AN: 294

European-Non Finnish (NFE) AF: 0.300 AC: 20367 AN: 67964

Other (OTH) AF: 0.395 AC: 831 AN: 2106

Alfa AF: 0.326 Hom.: 1276

Bravo AF: 0.390

Asia WGS AF: 0.488 AC: 1697 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.94
CADD	Benign	2.0
DANN	Benign	0.36
PhyloP100		-0.94

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs3091282; hg19: chr6-33057198;