Genetic Variant FFAR3:p.Met72Val (chr19-35359104-A-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_005304.5(FFAR3):c.214A>G(p.Met72Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000609 in 1,608,276 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M72T) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000080 ( 0 hom., cov: 30)

Exomes 𝑓: 0.000059 ( 0 hom. )

Consequence

FFAR3
NM_005304.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.73

Variant links:

Genes affected

FFAR3 (HGNC:4499): (free fatty acid receptor 3) Enables G protein-coupled receptor activity. Involved in adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway and cellular response to fatty acid. Located in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

FFAR3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.052593797).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FFAR3	NM_005304.5 link	c.214A>G	p.Met72Val	missense_variant	Exon 2 of 2	ENST00000327809.5	NP_005295.1
FFAR3	XM_011526858.3 link	c.325A>G	p.Met109Val	missense_variant	Exon 2 of 2		XP_011525160.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FFAR3	ENST00000327809.5 link	c.214A>G	p.Met72Val	missense_variant	Exon 2 of 2	1	NM_005304.5	ENSP00000328230.3		O14843
FFAR3	ENST00000594310.1 link	c.214A>G	p.Met72Val	missense_variant	Exon 1 of 1	6		ENSP00000469522.1		O14843

Frequencies

GnomAD3 genomes

AF:

0.0000797

AC:

AN:

150600

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:

0.00195

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000297

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000150

AC:

AN:

247424

Hom.:

AF XY:

0.000127

AC XY:

AN XY:

134286

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00164

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000538

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000590

AC:

AN:

1457564

Hom.:

Cov.:

AF XY:

0.0000593

AC XY:

AN XY:

725304

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00103

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000379

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000796

AC:

AN:

150712

Hom.:

Cov.:

AF XY:

0.0000680

AC XY:

AN XY:

73560

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00195

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000297

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000959

Hom.:

Bravo

AF:

0.000162

ExAC

AF:

0.0000825

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 28, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.214A>G (p.M72V) alteration is located in exon 2 (coding exon 1) of the FFAR3 gene. This alteration results from a A to G substitution at nucleotide position 214, causing the methionine (M) at amino acid position 72 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

0.20

BayesDel_addAF

Benign

-0.41

BayesDel_noAF

Benign

-0.39

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.13

T;T

Eigen

Benign

-0.072

Eigen_PC

Benign

0.10

FATHMM_MKL

Benign

0.60

LIST_S2

Benign

0.70

.;T

M_CAP

Benign

0.0052

MetaRNN

Benign

0.053

T;T

MetaSVM

Benign

-1.0

PrimateAI

Benign

0.47

PROVEAN

Benign

-1.9

N;.

REVEL

Benign

0.18

Sift

Benign

0.13

T;.

Sift4G

Benign

0.36

T;T

Polyphen

0.34

B;B

Vest4

0.58

MutPred

0.58

Gain of methylation at R71 (P = 0.1308);Gain of methylation at R71 (P = 0.1308);

MVP

0.22

ClinPred

0.080

GERP RS

5.5

Varity_R

0.45

gMVP

0.69

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

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