rs146838277

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP4

The NM_004104.5(FASN):c.1372G>A(p.Ala458Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000801 in 1,610,312 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. A458A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000083 ( 0 hom. )

Consequence

FASN
NM_004104.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.62

Publications

2 publications found

Variant links:

Genes affected

FASN (HGNC:3594): (fatty acid synthase) The enzyme encoded by this gene is a multifunctional protein. Its main function is to catalyze the synthesis of palmitate from acetyl-CoA and malonyl-CoA, in the presence of NADPH, into long-chain saturated fatty acids. In some cancer cell lines, this protein has been found to be fused with estrogen receptor-alpha (ER-alpha), in which the N-terminus of FAS is fused in-frame with the C-terminus of ER-alpha. [provided by RefSeq, Jul 2008]

FASN Gene-Disease associations (from GenCC):

neurodevelopmental disorder
Inheritance: AR Classification: LIMITED Submitted by: G2P

FASN links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.26644933).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FASN	NM_004104.5 link	c.1372G>A	p.Ala458Thr	missense_variant	Exon 9 of 43	ENST00000306749.4	NP_004095.4	P49327
FASN	XM_011523538.3 link	c.1372G>A	p.Ala458Thr	missense_variant	Exon 9 of 43		XP_011521840.1	P49327

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FASN	ENST00000306749.4 link	c.1372G>A	p.Ala458Thr	missense_variant	Exon 9 of 43	1	NM_004104.5	ENSP00000304592.2		P49327
FASN	ENST00000634990.1 link	c.1372G>A	p.Ala458Thr	missense_variant	Exon 9 of 43	5		ENSP00000488964.1		A0A0U1RQF0

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152152

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000109

AC:

AN:

237508

AF XY:

0.000123

show subpopulations

Gnomad AFR exome

AF:

0.000203

Gnomad AMR exome

AF:

0.0000294

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000559

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000955

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000830

AC:

121

AN:

1458160

Hom.:

Cov.:

AF XY:

0.000103

AC XY:

AN XY:

725304

show subpopulations

African (AFR)

AF:

0.000508

AC:

AN:

33450

American (AMR)

AF:

0.0000224

AC:

AN:

44546

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26034

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39644

South Asian (SAS)

AF:

0.000709

AC:

AN:

86006

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51584

Middle Eastern (MID)

AF:

0.00139

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.0000198

AC:

AN:

1110968

Other (OTH)

AF:

0.000183

AC:

AN:

60170

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

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:

0.0000526

AC:

AN:

152152

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74322

show subpopulations

African (AFR)

AF:

0.0000724

AC:

AN:

41438

American (AMR)

AF:

0.0000655

AC:

AN:

15274

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.000414

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68014

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

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:

0.00

Hom.:

Bravo

AF:

0.0000756

ESP6500AA

AF:

0.000458

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000832

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Epileptic encephalopathy

Uncertain:1

Sep 14, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 458 of the FASN protein (p.Ala458Thr). This variant is present in population databases (rs146838277, gnomAD 0.07%), and has an allele count higher than expected for a pathogenic variant. This variant has not been reported in the literature in individuals affected with FASN-related conditions. ClinVar contains an entry for this variant (Variation ID: 530961). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.35

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.42

T;.

Eigen

Benign

-0.056

Eigen_PC

Benign

-0.19

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.89

D;D

M_CAP

Benign

0.032

MetaRNN

Benign

0.27

T;T

MetaSVM

Benign

-0.89

MutationAssessor

Pathogenic

3.4

M;.

PhyloP100

3.6

PrimateAI

Benign

0.44

PROVEAN

Benign

-1.6

N;.

REVEL

Benign

0.20

Sift

Benign

0.068

T;.

Sift4G

Benign

0.33

T;T

Polyphen

0.94

P;.

Vest4

0.52

MVP

0.64

ClinPred

0.17

GERP RS

3.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.21

gMVP

0.60

Mutation Taster

=85/15

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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over