Genetic Variant TREM2:p.Thr96Arg (chr6-41161367-G-C) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_018965.4(TREM2):c.287C>G(p.Thr96Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,894 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. T96M) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

TREM2
NM_018965.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.77

Publications

85 publications found

Variant links:

Genes affected

TREM2 (HGNC:17761): (triggering receptor expressed on myeloid cells 2) This gene encodes a membrane protein that forms a receptor signaling complex with the TYRO protein tyrosine kinase binding protein. The encoded protein functions in immune response and may be involved in chronic inflammation by triggering the production of constitutive inflammatory cytokines. Defects in this gene are a cause of polycystic lipomembranous osteodysplasia with sclerosing leukoencephalopathy (PLOSL). Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Nov 2012]

TREM2 Gene-Disease associations (from GenCC):

polycystic lipomembranous osteodysplasia with sclerosing leukoencephalopathy 2
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Ambry Genetics, PanelApp Australia, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
polycystic lipomembranous osteodysplasia with sclerosing leukoencephaly
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

TREM2 links:

ENSG00000290034 (HGNC:):

ENSG00000290034 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.907

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TREM2	NM_018965.4 link	c.287C>G	p.Thr96Arg	missense_variant	Exon 2 of 5	ENST00000373113.8	NP_061838.1
TREM2	NM_001271821.2 link	c.287C>G	p.Thr96Arg	missense_variant	Exon 2 of 4		NP_001258750.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TREM2	ENST00000373113.8 link	c.287C>G	p.Thr96Arg	missense_variant	Exon 2 of 5	1	NM_018965.4	ENSP00000362205.3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461894

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727248

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1112012

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.21

BayesDel_addAF

Uncertain

0.15

BayesDel_noAF

Uncertain

-0.030

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.48

.;T;.

Eigen

Uncertain

0.45

Eigen_PC

Uncertain

0.33

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.80

T;T;T

M_CAP

Pathogenic

0.33

MetaRNN

Pathogenic

0.91

D;D;D

MetaSVM

Uncertain

-0.22

MutationAssessor

Uncertain

2.6

M;M;M

PhyloP100

5.8

PrimateAI

Uncertain

0.54

PROVEAN

Pathogenic

-4.4

D;D;D

REVEL

Uncertain

0.33

Sift

Uncertain

0.0020

D;D;D

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

1.0

D;D;D

Vest4

0.68

MutPred

0.17

Gain of sheet (P = 0.0028);Gain of sheet (P = 0.0028);Gain of sheet (P = 0.0028);

MVP

0.73

MPC

0.69

ClinPred

1.0

GERP RS

5.5

Varity_R

0.90

gMVP

0.62

Mutation Taster

=62/38

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.35

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.35

Position offset: -1

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over