rs142275662

Positions:

• chr17-82080880-T-A
• chr17-82080880-T-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_004104.5(FASN):​c.6638A>T​(p.Gln2213Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,218 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
• Consequence: FASN NM_004104.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.180

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 Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.057607442).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FASN	NM_004104.5	c.6638A>T	p.Gln2213Leu	missense_variant	39/43	ENST00000306749.4	NP_004095.4
FASN	XM_011523538.3	c.6638A>T	p.Gln2213Leu	missense_variant	39/43		XP_011521840.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FASN	ENST00000306749.4	c.6638A>T	p.Gln2213Leu	missense_variant	39/43	1	NM_004104.5	ENSP00000304592.2
FASN	ENST00000634990.1	c.6632A>T	p.Gln2211Leu	missense_variant	39/43	5		ENSP00000488964.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152218 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

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

GnomAD4 exome Cov.: 33

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152218 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74366

Gnomad4 AFR AF: 0.0000241

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: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.093
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	2.8
DANN	Benign	0.72
DEOGEN2	Benign	0.27	T;.
Eigen	Benign	-1.5
Eigen_PC	Benign	-1.6
FATHMM_MKL	Benign	0.57	D
LIST_S2	Benign	0.43	T;T
M_CAP	Benign	0.019	T
MetaRNN	Benign	0.058	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.4	L;.
PrimateAI	Benign	0.32	T
PROVEAN	Benign	-1.3	N;.
REVEL	Benign	0.010
Sift	Benign	0.23	T;.
Sift4G	Benign	0.33	T;T
Polyphen		0.027	B;.
Vest4		0.16
MutPred		0.22		Gain of stability (P = 0.1545);.;
MVP		0.36
ClinPred		0.039	T
GERP RS		-4.9
Varity_R		0.049
gMVP		0.52

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

Publications

LitVar

Other links and lift over

dbSNP: rs142275662; hg19: chr17-80038756;