rs753648795

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_004104.5(FASN):​c.5009C>T​(p.Thr1670Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000336 in 1,549,438 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. T1670T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 34)
Exomes 𝑓: 0.000035 ( 1 hom. )

Consequence

FASN
NM_004104.5 missense

Scores

1
8
10

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.15

Publications

0 publications found
Variant links:
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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
FASNNM_004104.5 linkc.5009C>T p.Thr1670Met missense_variant Exon 29 of 43 ENST00000306749.4 NP_004095.4 P49327
FASNXM_011523538.3 linkc.5009C>T p.Thr1670Met missense_variant Exon 29 of 43 XP_011521840.1 P49327

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
FASNENST00000306749.4 linkc.5009C>T p.Thr1670Met missense_variant Exon 29 of 43 1 NM_004104.5 ENSP00000304592.2 P49327
FASNENST00000634990.1 linkc.5003C>T p.Thr1668Met missense_variant Exon 29 of 43 5 ENSP00000488964.1 A0A0U1RQF0

Frequencies

GnomAD3 genomes
AF:
0.0000197
AC:
3
AN:
152232
Hom.:
0
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000207
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000958
AC:
14
AN:
146070
AF XY:
0.0000888
show subpopulations
Gnomad AFR exome
AF:
0.000264
Gnomad AMR exome
AF:
0.0000806
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000366
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000351
AC:
49
AN:
1397206
Hom.:
1
Cov.:
42
AF XY:
0.0000522
AC XY:
36
AN XY:
689586
show subpopulations
African (AFR)
AF:
0.000158
AC:
5
AN:
31708
American (AMR)
AF:
0.0000834
AC:
3
AN:
35972
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25166
East Asian (EAS)
AF:
0.00
AC:
0
AN:
35888
South Asian (SAS)
AF:
0.000314
AC:
25
AN:
79512
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
44790
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5696
European-Non Finnish (NFE)
AF:
0.0000130
AC:
14
AN:
1080432
Other (OTH)
AF:
0.0000345
AC:
2
AN:
58042
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.494
Heterozygous variant carriers
0
4
8
12
16
20
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.0000197
AC:
3
AN:
152232
Hom.:
0
Cov.:
34
AF XY:
0.0000269
AC XY:
2
AN XY:
74382
show subpopulations
African (AFR)
AF:
0.0000241
AC:
1
AN:
41460
American (AMR)
AF:
0.0000654
AC:
1
AN:
15288
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5200
South Asian (SAS)
AF:
0.000207
AC:
1
AN:
4838
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10628
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68028
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.558
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.0000434
Hom.:
0
Bravo
AF:
0.0000227
ExAC
AF:
0.0000372
AC:
4

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Epileptic encephalopathy Uncertain:1
Sep 17, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces threonine, which is neutral and polar, with methionine, which is neutral and non-polar, at codon 1670 of the FASN protein (p.Thr1670Met). This variant is present in population databases (rs753648795, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with FASN-related conditions. ClinVar contains an entry for this variant (Variation ID: 581909). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.14
BayesDel_addAF
Benign
-0.31
T
BayesDel_noAF
Benign
-0.37
CADD
Uncertain
24
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.60
D;.
Eigen
Uncertain
0.24
Eigen_PC
Benign
0.094
FATHMM_MKL
Pathogenic
0.97
D
LIST_S2
Uncertain
0.97
D;D
M_CAP
Benign
0.047
D
MetaRNN
Uncertain
0.66
D;D
MetaSVM
Benign
-0.80
T
MutationAssessor
Uncertain
2.6
M;.
PhyloP100
3.2
PrimateAI
Benign
0.47
T
PROVEAN
Benign
-2.2
N;.
REVEL
Benign
0.21
Sift
Uncertain
0.0040
D;.
Sift4G
Uncertain
0.015
D;D
Polyphen
0.99
D;.
Vest4
0.67
MutPred
0.54
Loss of disorder (P = 0.1168);.;
MVP
0.52
ClinPred
0.064
T
GERP RS
3.6
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.18
gMVP
0.72
Mutation Taster
=90/10
polymorphism

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

Other links and lift over

dbSNP: rs753648795; hg19: chr17-80041940; COSMIC: COSV60757668; COSMIC: COSV60757668; API