rs2287987

Positions:

• chr5-96793832-T-A
• chr5-96793832-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001040458.3(ERAP1):​c.1045A>T​(p.Met349Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M349V) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ERAP1 NM_001040458.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.70

Genes affected

ERAP1 (HGNC:18173): (endoplasmic reticulum aminopeptidase 1) The protein encoded by this gene is an aminopeptidase involved in trimming HLA class I-binding precursors so that they can be presented on MHC class I molecules. The encoded protein acts as a monomer or as a heterodimer with ERAP2. This protein may also be involved in blood pressure regulation by inactivation of angiotensin II. Three transcript variants encoding two different isoforms have been found for this gene.[provided by RefSeq, Oct 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.27283213).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ERAP1	NM_001040458.3	c.1045A>T	p.Met349Leu	missense_variant	6/19	ENST00000443439.7	NP_001035548.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ERAP1	ENST00000443439.7	c.1045A>T	p.Met349Leu	missense_variant	6/19	1	NM_001040458.3	ENSP00000406304	P1
ERAP1	ENST00000296754.7	c.1045A>T	p.Met349Leu	missense_variant	6/20	1		ENSP00000296754

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.57
CADD	Benign	15
DANN	Benign	0.93
DEOGEN2	Benign	0.019	.;T
Eigen	Benign	-0.39
Eigen_PC	Benign	-0.17
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Benign	0.66	T;T
M_CAP	Benign	0.0061	T
MetaRNN	Benign	0.27	T;T
MetaSVM	Benign	-0.97	T
MutationAssessor	Benign	0.46	N;N
MutationTaster	Benign	0.11	P;P;P
PrimateAI	Benign	0.47	T
PROVEAN	Benign	-0.88	N;N
REVEL	Benign	0.091
Sift	Benign	0.40	T;T
Sift4G	Benign	0.52	T;T
Polyphen		0.0020	B;B
Vest4		0.22
MutPred		0.56		Loss of methylation at K344 (P = 0.1252);Loss of methylation at K344 (P = 0.1252);
MVP		0.072
MPC		0.072
ClinPred		0.42	T
GERP RS		4.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.51
gMVP		0.48

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs2287987; hg19: chr5-96129535;