rs406652

Positions:

• chr8-16184998-G-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_138715.3(MSR1):​c.-4-7006C>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.137 in 152,004 control chromosomes in the GnomAD database, including 1,834 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 0.14 (1834 hom., cov: 32)
• Consequence: MSR1 NM_138715.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0330

Genes affected

MSR1 (HGNC:7376): (macrophage scavenger receptor 1) This gene encodes the class A macrophage scavenger receptors, which include three different types (1, 2, 3) generated by alternative splicing of this gene. These receptors or isoforms are macrophage-specific trimeric integral membrane glycoproteins and have been implicated in many macrophage-associated physiological and pathological processes including atherosclerosis, Alzheimer's disease, and host defense. The isoforms type 1 and type 2 are functional receptors and are able to mediate the endocytosis of modified low density lipoproteins (LDLs). The isoform type 3 does not internalize modified LDL (acetyl-LDL) despite having the domain shown to mediate this function in the types 1 and 2 isoforms. It has an altered intracellular processing and is trapped within the endoplasmic reticulum, making it unable to perform endocytosis. The isoform type 3 can inhibit the function of isoforms type 1 and type 2 when co-expressed, indicating a dominant negative effect and suggesting a mechanism for regulation of scavenger receptor activity in macrophages. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.227 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MSR1	NM_138715.3	c.-4-7006C>G		intron_variant		ENST00000262101.10	NP_619729.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MSR1	ENST00000262101.10	c.-4-7006C>G		intron_variant		1	NM_138715.3	ENSP00000262101	P1

Frequencies

GnomAD3 genomes AF: 0.137 AC: 20791 AN: 151886 Hom.: 1821 Cov.: 32

Gnomad AFR AF: 0.230

Gnomad AMI AF: 0.0943

Gnomad AMR AF: 0.213

Gnomad ASJ AF: 0.121

Gnomad EAS AF: 0.112

Gnomad SAS AF: 0.127

Gnomad FIN AF: 0.0521

Gnomad MID AF: 0.187

Gnomad NFE AF: 0.0798

Gnomad OTH AF: 0.152

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

GnomAD4 genome AF: 0.137 AC: 20840 AN: 152004 Hom.: 1834 Cov.: 32 AF XY: 0.137 AC XY: 10151 AN XY: 74314

Gnomad4 AFR AF: 0.230

Gnomad4 AMR AF: 0.213

Gnomad4 ASJ AF: 0.121

Gnomad4 EAS AF: 0.113

Gnomad4 SAS AF: 0.128

Gnomad4 FIN AF: 0.0521

Gnomad4 NFE AF: 0.0799

Gnomad4 OTH AF: 0.150

Alfa AF: 0.108 Hom.: 169

Bravo AF: 0.155

Asia WGS AF: 0.157 AC: 545 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	1.5
DANN	Benign	0.45

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

LitVar

Other links and lift over

dbSNP: rs406652; hg19: chr8-16042507;