chr17-82083589-C-T

Variant names:

• chr17-82083589-C-T
• rs778637882
• NM_004104.5:c.5269G>A

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_Moderate BS2

The NM_004104.5(FASN):​c.5269G>A​(p.Val1757Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000145 in 1,612,296 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts 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. V1757A) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000092 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00015 (2 hom.)
• Consequence: FASN NM_004104.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 2.64
• Publications: 0 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 -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.18024796).
• BS2: High Homozygotes in GnomAdExome4 at 2 AR gene

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.5269G>A	p.Val1757Met	missense	Exon 31 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.5269G>A	p.Val1757Met	missense	Exon 31 of 43	ENSP00000304592.2
	FASN	ENST00000940344.1		c.5296G>A	p.Val1766Met	missense	Exon 31 of 43	ENSP00000610403.1
	FASN	ENST00000940346.1		c.5293G>A	p.Val1765Met	missense	Exon 31 of 43	ENSP00000610405.1

Frequencies

GnomAD3 genomes AF: 0.0000920 AC: 14 AN: 152238 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000724

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: 0.000162

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000121 AC: 30 AN: 247264 AF XY: 0.000134

Gnomad AFR exome AF: 0.0000632

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000109

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000990

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000150 AC: 219 AN: 1460058 Hom.: 2 Cov.: 36 AF XY: 0.000138 AC XY: 100 AN XY: 726284

African (AFR) AF: 0.00 AC: 0 AN: 33468

American (AMR) AF: 0.00 AC: 0 AN: 44678

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26110

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39686

South Asian (SAS) AF: 0.000441 AC: 38 AN: 86186

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52024

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.000156 AC: 173 AN: 1111800

Other (OTH) AF: 0.000116 AC: 7 AN: 60338

GnomAD4 genome AF: 0.0000920 AC: 14 AN: 152238 Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2 AN XY: 74380

African (AFR) AF: 0.0000724 AC: 3 AN: 41452

American (AMR) AF: 0.00 AC: 0 AN: 15290

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5192

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

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10626

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

European-Non Finnish (NFE) AF: 0.000162 AC: 11 AN: 68050

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

Alfa AF: 0.000181 Hom.: 0

Bravo AF: 0.0000945

ExAC AF: 0.0000994 AC: 12

EpiCase AF: 0.000164

EpiControl AF: 0.000119

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Epileptic encephalopathy (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.35
BayesDel_addAF	Benign	-0.43	T
BayesDel_noAF	Benign	-0.51
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.33	T
Eigen	Benign	0.18
Eigen_PC	Benign	0.11
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Pathogenic	0.97	D
M_CAP	Benign	0.015	T
MetaRNN	Benign	0.18	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.9	L
PhyloP100		2.6
PrimateAI	Uncertain	0.68	T
PROVEAN	Benign	-1.5	N
REVEL	Benign	0.095
Sift	Uncertain	0.0040	D
Sift4G	Uncertain	0.0060	D
Polyphen		0.99	D
Vest4		0.42
MVP		0.36
ClinPred		0.18	T
GERP RS		3.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.2
Varity_R		0.27
gMVP		0.49
Mutation Taster		=95/5	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs778637882; hg19: chr17-80041465;