NM_004104.5:c.4981G>A

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_004104.5(FASN):c.4981G>A(p.Val1661Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000204 in 1,565,204 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

FASN
NM_004104.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.95

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.3403907).

BS2

High AC in GnomAd4 at 16 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FASN	NM_004104.5 link	c.4981G>A	p.Val1661Met	missense_variant	Exon 29 of 43	ENST00000306749.4	NP_004095.4	P49327
FASN	XM_011523538.3 link	c.4981G>A	p.Val1661Met	missense_variant	Exon 29 of 43		XP_011521840.1	P49327

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FASN	ENST00000306749.4 link	c.4981G>A	p.Val1661Met	missense_variant	Exon 29 of 43	1	NM_004104.5	ENSP00000304592.2		P49327
FASN	ENST00000634990.1 link	c.4975G>A	p.Val1659Met	missense_variant	Exon 29 of 43	5		ENSP00000488964.1		A0A0U1RQF0

Frequencies

GnomAD3 genomes

AF:

0.000105

AC:

AN:

152252

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000386

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

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

GnomAD3 exomes

AF:

0.0000299

AC:

AN:

167440

Hom.:

AF XY:

0.0000220

AC XY:

AN XY:

90848

show subpopulations

Gnomad AFR exome

AF:

0.000560

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000113

AC:

AN:

1412952

Hom.:

Cov.:

AF XY:

0.00000716

AC XY:

AN XY:

698788

show subpopulations

Gnomad4 AFR exome

AF:

0.000342

Gnomad4 AMR exome

AF:

0.0000536

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000512

GnomAD4 genome

AF:

0.000105

AC:

AN:

152252

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74384

show subpopulations

Gnomad4 AFR

AF:

0.000386

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.000125

ESP6500AA

AF:

0.000469

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000256

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Epileptic encephalopathy

Uncertain:1

Jul 25, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 1661 of the FASN protein (p.Val1661Met). 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. 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 disruptive. ClinVar contains an entry for this variant (Variation ID: 582004). This variant has not been reported in the literature in individuals affected with FASN-related conditions. This variant is present in population databases (rs369709982, gnomAD 0.04%). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.35

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.44

T;.

Eigen

Benign

-0.057

Eigen_PC

Benign

-0.0046

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

D;D

M_CAP

Benign

0.013

MetaRNN

Benign

0.34

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.2

L;.

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-1.5

N;.

REVEL

Benign

0.17

Sift

Benign

0.041

D;.

Sift4G

Benign

0.064

T;T

Polyphen

0.43

B;.

Vest4

0.67

MVP

0.42

ClinPred

0.16

GERP RS

4.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.23

gMVP

0.76

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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