rs776934105

chr17-82092479-G-A

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_Strong BP6_Moderate BP7

The NM_004104.5(FASN):c.1005C>T(p.Ala335=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000418 in 1,434,736 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000042 (0 hom.)
• Consequence: FASN NM_004104.5 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.422

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 Benign. Variant got -7 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.57).
• BP6: Variant 17-82092479-G-A is Benign according to our data. Variant chr17-82092479-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 531173.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.422 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FASN	NM_004104.5	c.1005C>T	p.Ala335=	synonymous_variant	8/43	ENST00000306749.4
FASN	XM_011523538.3	c.1005C>T	p.Ala335=	synonymous_variant	8/43

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FASN	ENST00000306749.4	c.1005C>T	p.Ala335=	synonymous_variant	8/43	1	NM_004104.5	P1
FASN	ENST00000634990.1	c.1005C>T	p.Ala335=	synonymous_variant	8/43	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000418 AC: 6 AN: 1434736 Hom.: 0 Cov.: 37 AF XY: 0.00 AC XY: 0 AN XY: 711824

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000734

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000272

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Epileptic encephalopathy Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Aug 09, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.57
Cadd	Benign	4.2
Dann	Benign	0.69
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.9

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: rs776934105; hg19: chr17-80050355;