Genetic Variant F2RL2:p.Leu135Met (chr5-76618304-G-T) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_004101.4(F2RL2):c.403C>A(p.Leu135Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,882 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. L135V) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

F2RL2
NM_004101.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.16

Publications

0 publications found

Variant links:

Genes affected

F2RL2 (HGNC:3539): (coagulation factor II thrombin receptor like 2) This gene encodes a member of the protease-activated receptor (PAR) family which is a subfamily of the seven transmembrane G protein-coupled cell surface receptor family. The encoded protein acts as a cofactor in the thrombin-mediated cleavage and activation of the protease-activated receptor family member PAR4. The encoded protein plays an essential role in hemostasis and thrombosis. Alternate splicing results in multiple transcript variants that encode different isoforms. [provided by RefSeq, Feb 2012]

F2RL2 links:

IQGAP2 (HGNC:6111): (IQ motif containing GTPase activating protein 2) This gene encodes a member of the IQGAP family. The encoded protein contains three IQ domains, one calponin homology domain, one Ras-GAP domain and one WW domain. This protein interacts with components of the cytoskeleton, with cell adhesion molecules, and with several signaling molecules to regulate cell morphology and motility. It also acts as a tumor suppressor and has been found to play a role in regulating innate antiviral responses. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2017]

IQGAP2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.962

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004101.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
F2RL2	NM_004101.4	MANE Select	c.403C>A	p.Leu135Met	missense	Exon 2 of 2	NP_004092.1	O00254-1
IQGAP2	NM_006633.5	MANE Select	c.1521+7121G>T		intron	N/A	NP_006624.3	Q13576-1
F2RL2	NM_001256566.2		c.337C>A	p.Leu113Met	missense	Exon 2 of 2	NP_001243495.1	O00254-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
F2RL2	ENST00000296641.5	TSL:1 MANE Select	c.403C>A	p.Leu135Met	missense	Exon 2 of 2	ENSP00000296641.3	O00254-1
IQGAP2	ENST00000274364.11	TSL:1 MANE Select	c.1521+7121G>T		intron	N/A	ENSP00000274364.6	Q13576-1
IQGAP2	ENST00000396234.7	TSL:1	c.180+7121G>T		intron	N/A	ENSP00000379535.3	Q13576-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461882

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727242

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:

39698

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112006

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Pathogenic

0.39

BayesDel_noAF

Pathogenic

0.33

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.31

Eigen

Uncertain

0.42

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Uncertain

0.92

LIST_S2

Benign

0.70

M_CAP

Uncertain

0.15

MetaRNN

Pathogenic

0.96

MetaSVM

Uncertain

0.70

MutationAssessor

Pathogenic

3.1

PhyloP100

1.2

PrimateAI

Benign

0.41

PROVEAN

Benign

-2.0

REVEL

Pathogenic

0.78

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.79

MutPred

0.87

Loss of catalytic residue at L135 (P = 0.0882)

MVP

0.90

MPC

0.30

ClinPred

0.99

GERP RS

1.1

Varity_R

0.83

gMVP

0.60

Mutation Taster

=52/48

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over