rs9478498

Variant names:

• chr6-154020241-C-T
• rs9478498
• ENST00000434900.6:c.-1+9223C>T

Variant summary

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

The NM_001145279.4(OPRM1):​c.-1+9223C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.313 in 152,002 control chromosomes in the GnomAD database, including 8,282 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 0.31 (8282 hom., cov: 32)
• Consequence: OPRM1 NM_001145279.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.02
• Publications: 3 publications found

Genes affected

OPRM1 (HGNC:8156): (opioid receptor mu 1) This gene encodes one of at least three opioid receptors in humans; the mu opioid receptor (MOR). The MOR is the principal target of endogenous opioid peptides and opioid analgesic agents such as beta-endorphin and enkephalins. The MOR also has an important role in dependence to other drugs of abuse, such as nicotine, cocaine, and alcohol via its modulation of the dopamine system. The NM_001008503.2:c.118A>G allele has been associated with opioid and alcohol addiction and variations in pain sensitivity but evidence for it having a causal role is conflicting. Multiple transcript variants encoding different isoforms have been found for this gene. Though the canonical MOR belongs to the superfamily of 7-transmembrane-spanning G-protein-coupled receptors some isoforms of this gene have only 6 transmembrane domains. [provided by RefSeq, Oct 2013]

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-1.02).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.465 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001145279.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OPRM1	NM_001145279.4		c.-1+9223C>T		intron	N/A	NP_001138751.1	P35372-10
	OPRM1	NM_001145281.3		c.47+9682C>T		intron	N/A	NP_001138753.1	P35372-13
	OPRM1	NM_001145280.4		c.-11+9223C>T		intron	N/A	NP_001138752.1	P35372-12

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OPRM1	ENST00000434900.6	TSL:1	c.-1+9223C>T		intron	N/A	ENSP00000394624.2	P35372-10
	OPRM1	ENST00000518759.5	TSL:1	c.47+9682C>T		intron	N/A	ENSP00000430260.1	P35372-13
	OPRM1	ENST00000520708.5	TSL:1	c.-11+9223C>T		intron	N/A	ENSP00000430876.1	P35372-12

Frequencies

GnomAD3 genomes AF: 0.312 AC: 47457 AN: 151884 Hom.: 8250 Cov.: 32

Gnomad AFR AF: 0.470

Gnomad AMI AF: 0.344

Gnomad AMR AF: 0.314

Gnomad ASJ AF: 0.222

Gnomad EAS AF: 0.138

Gnomad SAS AF: 0.147

Gnomad FIN AF: 0.260

Gnomad MID AF: 0.203

Gnomad NFE AF: 0.255

Gnomad OTH AF: 0.296

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

GnomAD4 genome AF: 0.313 AC: 47543 AN: 152002 Hom.: 8282 Cov.: 32 AF XY: 0.307 AC XY: 22826 AN XY: 74310

African (AFR) AF: 0.471 AC: 19504 AN: 41438

American (AMR) AF: 0.315 AC: 4806 AN: 15258

Ashkenazi Jewish (ASJ) AF: 0.222 AC: 770 AN: 3472

East Asian (EAS) AF: 0.138 AC: 713 AN: 5174

South Asian (SAS) AF: 0.146 AC: 706 AN: 4824

European-Finnish (FIN) AF: 0.260 AC: 2742 AN: 10542

Middle Eastern (MID) AF: 0.201 AC: 59 AN: 294

European-Non Finnish (NFE) AF: 0.255 AC: 17311 AN: 67986

Other (OTH) AF: 0.294 AC: 619 AN: 2104

Alfa AF: 0.288 Hom.: 1968

Bravo AF: 0.326

Asia WGS AF: 0.170 AC: 594 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-1.0
CADD	Benign	0.43
DANN	Benign	0.18
PhyloP100		-1.0
Mutation Taster		=100/0	polymorphism (auto)

Splicing

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

Other links and lift over

dbSNP: rs9478498; hg19: chr6-154341376;