NM_000274.4:c.314T>C

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 1P and 5B. PP2BP4_StrongBP6

The NM_000274.4(OAT):c.314T>C(p.Val105Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000471 in 1,613,194 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V105M) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000046 ( 0 hom. )

Consequence

OAT
NM_000274.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 0.986

Publications

3 publications found

Variant links:

Genes affected

OAT (HGNC:8091): (ornithine aminotransferase) This gene encodes the mitochondrial enzyme ornithine aminotransferase, which is a key enzyme in the pathway that converts arginine and ornithine into the major excitatory and inhibitory neurotransmitters glutamate and GABA. Mutations that result in a deficiency of this enzyme cause the autosomal recessive eye disease Gyrate Atrophy. Alternatively spliced transcript variants encoding different isoforms have been described. Related pseudogenes have been defined on the X chromosome. [provided by RefSeq, Jan 2010]

OAT Gene-Disease associations (from GenCC):

ornithine aminotransferase deficiency
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), G2P, Orphanet

OAT links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 35 curated pathogenic missense variants (we use a threshold of 10). The gene has 4 curated benign missense variants. Gene score misZ: 0.87566 (below the threshold of 3.09). Trascript score misZ: 1.6556 (below the threshold of 3.09). GenCC associations: The gene is linked to ornithine aminotransferase deficiency.

BP4

Computational evidence support a benign effect (MetaRNN=0.013165414).

BP6

Variant 10-124408851-A-G is Benign according to our data. Variant chr10-124408851-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 456521.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000274.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
OAT	NM_000274.4	MANE Select	c.314T>C	p.Val105Ala	missense	Exon 3 of 10	NP_000265.1
OAT	NM_001322965.2		c.314T>C	p.Val105Ala	missense	Exon 3 of 10	NP_001309894.1
OAT	NM_001322966.2		c.314T>C	p.Val105Ala	missense	Exon 4 of 11	NP_001309895.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
OAT	ENST00000368845.6	TSL:1 MANE Select	c.314T>C	p.Val105Ala	missense	Exon 3 of 10	ENSP00000357838.5
OAT	ENST00000539214.5	TSL:1	c.-101T>C		5_prime_UTR	Exon 2 of 9	ENSP00000439042.1
OAT	ENST00000476917.5	TSL:3	n.379T>C		non_coding_transcript_exon	Exon 3 of 5

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152222

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:

0.00173

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000107

AC:

AN:

251400

AF XY:

0.0000957

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00141

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000459

AC:

AN:

1460854

Hom.:

Cov.:

AF XY:

0.0000440

AC XY:

AN XY:

726770

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33444

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.00151

AC:

AN:

39678

South Asian (SAS)

AF:

0.00

AC:

AN:

86212

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.000592

AC:

AN:

5064

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111888

Other (OTH)

AF:

0.0000332

AC:

AN:

60298

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

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

AF:

0.0000591

AC:

AN:

152340

Hom.:

Cov.:

AF XY:

0.0000671

AC XY:

AN XY:

74496

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41592

American (AMR)

AF:

0.00

AC:

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00174

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68028

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000208

Hom.:

Bravo

AF:

0.0000945

ExAC

AF:

0.0000988

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

ClinVar submissions as Germline

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Ornithine aminotransferase deficiency (3)

Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.049

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.34

CADD

Benign

2.0

(source)

DANN

Benign

0.30

DEOGEN2

Uncertain

0.52

Eigen

Benign

-1.7

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.092

LIST_S2

Benign

0.69

M_CAP

Uncertain

0.091

MetaRNN

Benign

0.013

MetaSVM

Uncertain

-0.25

MutationAssessor

Benign

-1.7

PhyloP100

0.99

PrimateAI

Benign

0.33

PROVEAN

Benign

3.0

REVEL

Benign

0.28

Sift

Benign

1.0

Sift4G

Benign

1.0

Polyphen

0.0

Vest4

0.10

MVP

0.64

MPC

0.27

ClinPred

0.014

GERP RS

-2.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.055

gMVP

0.78

Mutation Taster

=80/20

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over