6-32949723-A-G

Variant names:

• chr6-32949723-A-G
• rs138600096
• NM_006120.4:c.540T>C

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 0P and 11B. BP4_Strong BP6_Moderate BP7 BS2

The NM_006120.4(HLA-DMA):​c.540T>C​(p.Asp180Asp) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000417 in 1,613,108 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.0023 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00022 (2 hom.)
• Consequence: HLA-DMA NM_006120.4 synonymous
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.246
• Publications: 1 publications found

Genes affected

HLA-DMA (HGNC:4934): (major histocompatibility complex, class II, DM alpha) HLA-DMA belongs to the HLA class II alpha chain paralogues. This class II molecule is a heterodimer consisting of an alpha (DMA) and a beta chain (DMB), both anchored in the membrane. It is located in intracellular vesicles. DM plays a central role in the peptide loading of MHC class II molecules by helping to release the CLIP molecule from the peptide binding site. Class II molecules are expressed in antigen presenting cells (APC: B lymphocytes, dendritic cells, macrophages). The alpha chain is approximately 33-35 kDa and its gene contains 5 exons. Exon one encodes the leader peptide, exons 2 and 3 encode the two extracellular domains, exon 4 encodes the transmembrane domain and the cytoplasmic tail. [provided by RefSeq, Jul 2008]

ENSG00000248993 (HGNC:):

ACMG classification

Our verdict: Benign. The variant received -11 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.81).
• BP6: Variant 6-32949723-A-G is Benign according to our data. Variant chr6-32949723-A-G is described in ClinVar as [Benign]. Clinvar id is 789590.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=-0.246 with no splicing effect.
• BS2: High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HLA-DMA	NM_006120.4	c.540T>C	p.Asp180Asp	synonymous_variant	Exon 3 of 5	ENST00000374843.9	NP_006111.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HLA-DMA	ENST00000374843.9	c.540T>C	p.Asp180Asp	synonymous_variant	Exon 3 of 5	6	NM_006120.4	ENSP00000363976.4
ENSG00000248993	ENST00000429234.1	c.88+3226T>C		intron_variant	Intron 1 of 3	2		ENSP00000412457.1

Frequencies

GnomAD3 genomes AF: 0.00229 AC: 349 AN: 152216 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00782

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000851

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: 0.000118

Gnomad OTH AF: 0.00191

GnomAD2 exomes AF: 0.000576 AC: 142 AN: 246322 AF XY: 0.000417

Gnomad AFR exome AF: 0.00742

Gnomad AMR exome AF: 0.000348

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000136

Gnomad OTH exome AF: 0.000330

GnomAD4 exome AF: 0.000220 AC: 322 AN: 1460774 Hom.: 2 Cov.: 33 AF XY: 0.000180 AC XY: 131 AN XY: 726700

African (AFR) AF: 0.00723 AC: 242 AN: 33480

American (AMR) AF: 0.000358 AC: 16 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52316

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

European-Non Finnish (NFE) AF: 0.0000306 AC: 34 AN: 1112008

Other (OTH) AF: 0.000497 AC: 30 AN: 60386

GnomAD4 genome AF: 0.00230 AC: 350 AN: 152334 Hom.: 0 Cov.: 32 AF XY: 0.00226 AC XY: 168 AN XY: 74492

African (AFR) AF: 0.00782 AC: 325 AN: 41570

American (AMR) AF: 0.000850 AC: 13 AN: 15300

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10622

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.000118 AC: 8 AN: 68030

Other (OTH) AF: 0.00189 AC: 4 AN: 2114

Alfa AF: 0.00123 Hom.: 1

Bravo AF: 0.00270

EpiCase AF: 0.000327

EpiControl AF: 0.00

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Jun 05, 2018

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
CADD	Benign	3.6
DANN	Benign	0.68
PhyloP100		-0.25
Mutation Taster		=100/0	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs138600096; hg19: chr6-32917500;