dbSNP rs764390927: FARS2:p.Arg7Ser (chr6-5368591-G-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_006567.5(FARS2):c.21G>C(p.Arg7Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,474 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R7K) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

FARS2
NM_006567.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.0250

Publications

0 publications found

Variant links:

Genes affected

FARS2 (HGNC:21062): (phenylalanyl-tRNA synthetase 2, mitochondrial) This gene encodes a protein that transfers phenylalanine to its cognate tRNA. This protein localizes to the mitochondrion and plays a role in mitochondrial protein translation. Mutations in this gene can cause combined oxidative phosphorylation deficiency 14 (Alpers encephalopathy). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2016]

FARS2 Gene-Disease associations (from GenCC):

metabolic disease
Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
combined oxidative phosphorylation defect type 14
Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
hereditary spastic paraplegia 77
Inheritance: AR Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
Leigh syndrome
Inheritance: AR Classification: MODERATE Submitted by: ClinGen

FARS2 links:

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ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.082182765).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FARS2	NM_006567.5 link	c.21G>C	p.Arg7Ser	missense_variant	Exon 2 of 7	ENST00000274680.9	NP_006558.1	O95363

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
FARS2	ENST00000274680.9 link	c.21G>C	p.Arg7Ser	missense_variant	Exon 2 of 7	1	NM_006567.5	ENSP00000274680.4	O95363
FARS2	ENST00000324331.10 link	c.21G>C	p.Arg7Ser	missense_variant	Exon 2 of 7	1		ENSP00000316335.5	O95363
FARS2	ENST00000602691.1 link	c.21G>C	p.Arg7Ser	missense_variant	Exon 3 of 3	3		ENSP00000473394.1	R4GMX6
FARS2	ENST00000648580.1 link	n.21G>C		non_coding_transcript_exon_variant	Exon 2 of 9			ENSP00000497889.1	A0A3B3ITR6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460474

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726374

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33462

American (AMR)

AF:

0.00

AC:

AN:

44644

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25998

East Asian (EAS)

AF:

0.00

AC:

AN:

39676

South Asian (SAS)

AF:

0.00

AC:

AN:

86080

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53380

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

9.00e-7

AC:

AN:

1111140

Other (OTH)

AF:

0.00

AC:

AN:

60336

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 v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.47

CADD

Benign

5.9

(source)

DANN

Benign

0.75

DEOGEN2

Benign

0.043

T;.;T

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.023

LIST_S2

Benign

0.52

.;T;T

M_CAP

Benign

0.014

MetaRNN

Benign

0.082

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.90

L;.;L

PhyloP100

-0.025

PrimateAI

Benign

0.32

PROVEAN

Benign

-1.1

N;.;N

REVEL

Benign

0.067

Sift

Benign

0.72

T;.;T

Sift4G

Benign

0.11

T;D;T

Polyphen

0.0

B;.;B

Vest4

0.28

MutPred

0.43

Gain of sheet (P = 0.0166);Gain of sheet (P = 0.0166);Gain of sheet (P = 0.0166);

MVP

0.57

MPC

0.18

ClinPred

0.024

GERP RS

0.30

Varity_R

0.088

gMVP

0.65

Mutation Taster

=96/4

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over