rs750312479

Variant names:

• chr17-82085477-C-A
• rs750312479
• NM_004104.5:c.4122+5G>T

Your query was ambiguous. Multiple possible variants found:

• chr17-82085477-C-A
• chr17-82085477-C-T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_004104.5(FASN):​c.4122+5G>T variant causes a splice region, intron 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. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: FASN NM_004104.5 splice_region, intron
• Scores: Splicing: ADA: 0.7889
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.08
• 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 -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FASN	NM_004104.5	c.4122+5G>T		splice_region_variant, intron_variant	Intron 23 of 42	ENST00000306749.4	NP_004095.4
FASN	XM_011523538.3	c.4122+5G>T		splice_region_variant, intron_variant	Intron 23 of 42		XP_011521840.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FASN	ENST00000306749.4	c.4122+5G>T		splice_region_variant, intron_variant	Intron 23 of 42	1	NM_004104.5	ENSP00000304592.2
FASN	ENST00000634990.1	c.4116+5G>T		splice_region_variant, intron_variant	Intron 23 of 42	5		ENSP00000488964.1
FASN	ENST00000579410.1	n.179+5G>T		splice_region_variant, intron_variant	Intron 1 of 1	2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00 AC: 0 AN: 202742 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1437012 Hom.: 0 Cov.: 67 AF XY: 0.00 AC XY: 0 AN XY: 712742

African (AFR) AF: 0.00 AC: 0 AN: 32974

American (AMR) AF: 0.00 AC: 0 AN: 41514

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25608

East Asian (EAS) AF: 0.00 AC: 0 AN: 38306

South Asian (SAS) AF: 0.00 AC: 0 AN: 82988

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49898

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5500

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1100842

Other (OTH) AF: 0.00 AC: 0 AN: 59382

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	0.86
DANN	Benign	0.52
PhyloP100		-2.1

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.79
dbscSNV1_RF	Benign	0.30
SpliceAI score (max)		0.050		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: rs750312479; hg19: chr17-80043353;