Genetic Variant FASN:c.6164-8C>G (chr17-82081851-G-C) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_004104.5(FASN):c.6164-8C>G variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00416 in 1,599,194 control chromosomes in the GnomAD database, including 241 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.022 ( 118 hom., cov: 30)

Exomes 𝑓: 0.0023 ( 123 hom. )

Consequence

FASN
NM_004104.5 splice_region, intron

Scores

Splicing: ADA: 0.00001393

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -2.01

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 Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.85).

BP6

Variant 17-82081851-G-C is Benign according to our data. Variant chr17-82081851-G-C is described in ClinVar as [Benign]. Clinvar id is 462092.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0745 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FASN	NM_004104.5 link	c.6164-8C>G		splice_region_variant, intron_variant	Intron 36 of 42	ENST00000306749.4	NP_004095.4	P49327
FASN	XM_011523538.3 link	c.6164-8C>G		splice_region_variant, intron_variant	Intron 36 of 42		XP_011521840.1	P49327

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FASN	ENST00000306749.4 link	c.6164-8C>G		splice_region_variant, intron_variant	Intron 36 of 42	1	NM_004104.5	ENSP00000304592.2		P49327
FASN	ENST00000634990.1 link	c.6158-8C>G		splice_region_variant, intron_variant	Intron 36 of 42	5		ENSP00000488964.1		A0A0U1RQF0

Frequencies

GnomAD3 genomes

AF:

0.0218

AC:

3284

AN:

150916

Hom.:

115

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0764

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00759

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:

0.000207

Gnomad OTH

AF:

0.0121

GnomAD3 exomes

AF:

0.00553

AC:

1265

AN:

228900

Hom.:

AF XY:

0.00425

AC XY:

540

AN XY:

126916

show subpopulations

Gnomad AFR exome

AF:

0.0815

Gnomad AMR exome

AF:

0.00367

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000101

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000684

Gnomad OTH exome

AF:

0.00174

GnomAD4 exome

AF:

0.00231

AC:

3340

AN:

1448158

Hom.:

123

Cov.:

AF XY:

0.00201

AC XY:

1444

AN XY:

719894

show subpopulations

Gnomad4 AFR exome

AF:

0.0835

Gnomad4 AMR exome

AF:

0.00397

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000163

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000379

Gnomad4 OTH exome

AF:

0.00522

GnomAD4 genome

AF:

0.0219

AC:

3309

AN:

151036

Hom.:

118

Cov.:

AF XY:

0.0213

AC XY:

1575

AN XY:

73780

show subpopulations

Gnomad4 AFR

AF:

0.0767

Gnomad4 AMR

AF:

0.00758

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000207

Gnomad4 OTH

AF:

0.0120

Alfa

AF:

0.00156

Hom.:

Bravo

AF:

0.0255

Asia WGS

AF:

0.00520

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

FASN-related disorder

Benign:1

Sep 09, 2019

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Epileptic encephalopathy

Benign:1

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Benign:1

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.85

CADD

Benign

0.016

DANN

Benign

0.43

RBP_binding_hub_radar

0.67

RBP_regulation_power_radar

2.8

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000014

dbscSNV1_RF

Benign

0.012

SpliceAI score (max)

0.19

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