rs778912716

chr17-82084017-C-Achr17-82084017-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_004104.5(FASN):c.5056G>T(p.Ala1686Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A1686T) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 34)
• Consequence: FASN NM_004104.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.461

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.12856847).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FASN	NM_004104.5	c.5056G>T	p.Ala1686Ser	missense_variant	29/43	ENST00000306749.4
FASN	XM_011523538.3	c.5056G>T	p.Ala1686Ser	missense_variant	29/43

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FASN	ENST00000306749.4	c.5056G>T	p.Ala1686Ser	missense_variant	29/43	1	NM_004104.5	P1
FASN	ENST00000634990.1	c.5050G>T	p.Ala1684Ser	missense_variant	29/43	5

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 41

GnomAD4 genome Cov.: 34

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.064
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.63
Cadd	Benign	11
Dann	Uncertain	0.98
DEOGEN2	Benign	0.22	T;.
Eigen	Benign	-0.54
Eigen_PC	Benign	-0.44
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.81	T;T
M_CAP	Benign	0.010	T
MetaRNN	Benign	0.13	T;T
MetaSVM	Benign	-0.92	T
MutationAssessor	Benign	0.34	N;.
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.56	T
PROVEAN	Benign	-0.61	N;.
REVEL	Benign	0.043
Sift	Benign	0.49	T;.
Sift4G	Benign	0.84	T;T
Polyphen		0.40	B;.
Vest4		0.29
MutPred		0.50		Gain of disorder (P = 0.0516);.;
MVP		0.29
ClinPred		0.40	T
GERP RS		1.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.3
Varity_R		0.080
gMVP		0.60

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

Other links and lift over

dbSNP: rs778912716; hg19: chr17-80041893;