8-16120616-TAAAAAAAAAAAAAAAA-TAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

Variant names:

• chr8-16120616-T-TAAAAAAAAAAAAAAAAAAAAAA
• rs60866666
• NM_138715.3:c.1034-32_1034-11dupTTTTTTTTTTTTTTTTTTTTTT

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_138715.3(MSR1):​c.1034-32_1034-11dupTTTTTTTTTTTTTTTTTTTTTT variant causes a intron change involving the alteration of a non-conserved nucleotide. It is difficult to determine the true allele frequency of this variant because it is of type INS_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.000031 (0 hom., cov: 0)
  • Exomes 𝑓: 0.0000088 (3 hom.)
  • Failed GnomAD Quality Control
• Consequence: MSR1 NM_138715.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.140
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• Barrett esophagus

  Inheritance: Unknown Classification: LIMITED Submitted by: Laboratory for Molecular Medicine

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_138715.3. 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
	MSR1	NM_138715.3	MANE Select	c.1034-32_1034-11dupTTTTTTTTTTTTTTTTTTTTTT		intron	N/A	NP_619729.1	P21757-1
	MSR1	NM_001363744.1		c.1088-32_1088-11dupTTTTTTTTTTTTTTTTTTTTTT		intron	N/A	NP_001350673.1	B4DDJ5
	MSR1	NM_138716.3		c.1034-10420_1034-10399dupTTTTTTTTTTTTTTTTTTTTTT		intron	N/A	NP_619730.1	P21757-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MSR1	ENST00000262101.10	TSL:1 MANE Select	c.1034-11_1034-10insTTTTTTTTTTTTTTTTTTTTTT		intron	N/A	ENSP00000262101.5	P21757-1
	MSR1	ENST00000445506.6	TSL:1	c.1088-11_1088-10insTTTTTTTTTTTTTTTTTTTTTT		intron	N/A	ENSP00000405453.2	B4DDJ5
	MSR1	ENST00000355282.6	TSL:1	c.1034-10399_1034-10398insTTTTTTTTTTTTTTTTTTTTTT		intron	N/A	ENSP00000347430.2	P21757-3

Frequencies

GnomAD3 genomes AF: 0.0000315 AC: 2 AN: 63506 Hom.: 0 Cov.: 0

Gnomad AFR AF: 0.0000608

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: 0.0000285

Gnomad OTH AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000881 AC: 10 AN: 1134570 Hom.: 3 Cov.: 0 AF XY: 0.00000534 AC XY: 3 AN XY: 561540

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 22446

American (AMR) AF: 0.000314 AC: 7 AN: 22288

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19566

East Asian (EAS) AF: 0.00 AC: 0 AN: 27820

South Asian (SAS) AF: 0.0000331 AC: 2 AN: 60406

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 26270

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3052

European-Non Finnish (NFE) AF: 0.00000110 AC: 1 AN: 906680

Other (OTH) AF: 0.00 AC: 0 AN: 46042

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.0881482), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.0000315 AC: 2 AN: 63506 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 28554

African (AFR) AF: 0.0000608 AC: 1 AN: 16446

American (AMR) AF: 0.00 AC: 0 AN: 4160

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 1986

East Asian (EAS) AF: 0.00 AC: 0 AN: 2086

South Asian (SAS) AF: 0.00 AC: 0 AN: 1506

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 938

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 58

European-Non Finnish (NFE) AF: 0.0000285 AC: 1 AN: 35072

Other (OTH) AF: 0.00 AC: 0 AN: 762

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.14

Splicing

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

Other links and lift over

dbSNP: rs60866666; hg19: chr8-15978125;