8-16120435-G-A

Position:

chr8-16120435-G-A

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_138715.3(MSR1):c.1205C>T(p.Ala402Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,613,688 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/25 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 29)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

MSR1
NM_138715.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -2.12

Variant links:

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]

MSR1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAdExome4 at 18 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
MSR1	NM_138715.3 linkuse as main transcript	c.1205C>T	p.Ala402Val	missense_variant	9/10	ENST00000262101.10
MSR1	NM_001363744.1 linkuse as main transcript	c.1259C>T	p.Ala420Val	missense_variant	9/10
MSR1	NM_138716.3 linkuse as main transcript	c.1034-10217C>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MSR1	ENST00000262101.10 linkuse as main transcript	c.1205C>T	p.Ala402Val	missense_variant	9/10	1	NM_138715.3	P1	P21757-1
MSR1	ENST00000445506.6 linkuse as main transcript	c.1259C>T	p.Ala420Val	missense_variant	9/10	1
MSR1	ENST00000355282.6 linkuse as main transcript	c.1034-10217C>T		intron_variant		1			P21757-3
MSR1	ENST00000350896.3 linkuse as main transcript	c.1034-10217C>T		intron_variant		5			P21757-3

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151874

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000123

AC:

AN:

1461814

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

727202

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000144

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000198

AC:

AN:

151874

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74174

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000214

Hom.:

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 27, 2022

The c.1205C>T (p.A402V) alteration is located in exon 9 (coding exon 8) of the MSR1 gene. This alteration results from a C to T substitution at nucleotide position 1205, causing the alanine (A) at amino acid position 402 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.28

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.62

CADD

Benign

DANN

Benign

0.87

DEOGEN2

Benign

0.017

T;.

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.033

LIST_S2

Benign

0.18

T;T

M_CAP

Benign

0.0047

MetaRNN

Benign

0.071

T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.1

L;.

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.26

PROVEAN

Benign

-0.34

N;N

REVEL

Benign

0.051

Sift

Benign

0.11

T;T

Sift4G

Benign

0.23

T;T

Polyphen

0.64

P;P

Vest4

0.19

MutPred

0.52

.;Gain of methylation at K419 (P = 0.0367);

MVP

0.15

MPC

0.0041

ClinPred

0.46

GERP RS

-5.5

Varity_R

0.063

gMVP

0.19

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.36

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.36

Position offset: 2

DS_DL_spliceai

0.20

Position offset: -17

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over