NM_004104.5:c.145C>T

Variant names:

• chr17-82095455-G-A
• rs774656123
• NM_004104.5:c.145C>T

Variant summary

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

The NM_004104.5(FASN):​c.145C>T​(p.Arg49Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000242 in 1,612,400 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R49Q) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 34)
  • Exomes 𝑓: 0.000025 (0 hom.)
• Consequence: FASN NM_004104.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.955
• Publications: 4 publications found

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

ACMG classification

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

• BP4: Computational evidence support a benign effect (MetaRNN=0.34628728).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004104.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FASN	NM_004104.5	MANE Select	c.145C>T	p.Arg49Trp	missense	Exon 3 of 43	NP_004095.4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FASN	ENST00000306749.4	TSL:1 MANE Select	c.145C>T	p.Arg49Trp	missense	Exon 3 of 43	ENSP00000304592.2
	FASN	ENST00000940344.1		c.145C>T	p.Arg49Trp	missense	Exon 3 of 43	ENSP00000610403.1
	FASN	ENST00000940346.1		c.145C>T	p.Arg49Trp	missense	Exon 3 of 43	ENSP00000610405.1

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152220 Hom.: 0 Cov.: 34

Gnomad AFR AF: 0.00

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: 0.0000941

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000481 AC: 12 AN: 249688 AF XY: 0.0000738

Gnomad AFR exome AF: 0.0000622

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000889

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000247 AC: 36 AN: 1460180 Hom.: 0 Cov.: 34 AF XY: 0.0000344 AC XY: 25 AN XY: 726390

African (AFR) AF: 0.0000598 AC: 2 AN: 33468

American (AMR) AF: 0.00 AC: 0 AN: 44716

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.0000504 AC: 2 AN: 39700

South Asian (SAS) AF: 0.000243 AC: 21 AN: 86246

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52120

Middle Eastern (MID) AF: 0.000182 AC: 1 AN: 5480

European-Non Finnish (NFE) AF: 0.00000809 AC: 9 AN: 1111978

Other (OTH) AF: 0.0000166 AC: 1 AN: 60338

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152220 Hom.: 0 Cov.: 34 AF XY: 0.0000269 AC XY: 2 AN XY: 74362

African (AFR) AF: 0.00 AC: 0 AN: 41452

American (AMR) AF: 0.00 AC: 0 AN: 15288

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5182

South Asian (SAS) AF: 0.00 AC: 0 AN: 4836

European-Finnish (FIN) AF: 0.0000941 AC: 1 AN: 10630

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68038

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000113

ExAC AF: 0.0000743 AC: 9

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Epileptic encephalopathy (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.34	T
BayesDel_noAF	Benign	-0.43
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.80	D
Eigen	Benign	0.090
Eigen_PC	Benign	-0.076
FATHMM_MKL	Uncertain	0.80	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Benign	0.050	D
MetaRNN	Benign	0.35	T
MetaSVM	Benign	-0.85	T
MutationAssessor	Benign	1.7	L
PhyloP100		0.95
PrimateAI	Benign	0.46	T
PROVEAN	Uncertain	-4.4	D
REVEL	Benign	0.12
Sift	Uncertain	0.0020	D
Sift4G	Uncertain	0.0040	D
Polyphen		1.0	D
Vest4		0.56
MutPred		0.64		Loss of disorder (P = 0.0089)
MVP		0.29
ClinPred		0.77	D
GERP RS		-1.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.52
gMVP		0.92
Mutation Taster		=79/21	polymorphism

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

Other links and lift over

dbSNP: rs774656123; hg19: chr17-80053331; COSMIC: COSV60757968; COSMIC: COSV60757968;