chr17-82080514-G-T

Variant names:

• chr17-82080514-G-T
• rs1328155628
• NM_004104.5:c.6903C>A

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_004104.5(FASN):​c.6903C>A​(p.Pro2301Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000142 in 1,410,114 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. P2301P) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: FASN NM_004104.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.149
• 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 -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.61).
• BP7: Synonymous conserved (PhyloP=-0.149 with no splicing effect.

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FASN	NM_004104.5	MANE Select	c.6903C>A	p.Pro2301Pro	synonymous	Exon 40 of 43	NP_004095.4

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FASN	ENST00000306749.4	TSL:1 MANE Select	c.6903C>A	p.Pro2301Pro	synonymous	Exon 40 of 43	ENSP00000304592.2
	FASN	ENST00000634990.1	TSL:5	c.6897C>A	p.Pro2299Pro	synonymous	Exon 40 of 43	ENSP00000488964.1
	FASN	ENST00000578424.2	TSL:2	n.182C>A		non_coding_transcript_exon	Exon 1 of 4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000142 AC: 2 AN: 1410114 Hom.: 0 Cov.: 33 AF XY: 0.00000287 AC XY: 2 AN XY: 697152

African (AFR) AF: 0.00 AC: 0 AN: 32264

American (AMR) AF: 0.00 AC: 0 AN: 37142

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25282

East Asian (EAS) AF: 0.00 AC: 0 AN: 36776

South Asian (SAS) AF: 0.0000248 AC: 2 AN: 80562

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 47362

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5656

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1086576

Other (OTH) AF: 0.00 AC: 0 AN: 58494

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.61
CADD	Benign	4.5
DANN	Benign	0.83
PhyloP100		-0.15
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

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: rs1328155628; hg19: chr17-80038390;