Genetic Variant FADS3:p.Glu368Lys (chr11-61876169-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_021727.5(FADS3):c.1102G>A(p.Glu368Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000184 in 1,605,322 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00018 ( 3 hom. )

Consequence

FADS3
NM_021727.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.459

Publications

4 publications found

Variant links:

Genes affected

FADS3 (HGNC:3576): (fatty acid desaturase 3) The protein encoded by this gene is a member of the fatty acid desaturase (FADS) gene family. Desaturase enzymes regulate unsaturation of fatty acids through the introduction of double bonds between defined carbons of the fatty acyl chain. FADS family members are considered fusion products composed of an N-terminal cytochrome b5-like domain and a C-terminal multiple membrane-spanning desaturase portion, both of which are characterized by conserved histidine motifs. This gene is clustered with family members FADS1 and FADS2 at 11q12-q13.1; this cluster is thought to have arisen evolutionarily from gene duplication based on its similar exon/intron organization. [provided by RefSeq, Jul 2008]

FADS3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.12110883).

BS2

High Homozygotes in GnomAdExome4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FADS3	NM_021727.5 link	c.1102G>A	p.Glu368Lys	missense_variant	Exon 10 of 12	ENST00000278829.7	NP_068373.1	Q9Y5Q0A0A024R564

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FADS3	ENST00000278829.7 link	c.1102G>A	p.Glu368Lys	missense_variant	Exon 10 of 12	1	NM_021727.5	ENSP00000278829.2		Q9Y5Q0

Frequencies

GnomAD3 genomes

AF:

0.000184

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

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:

0.000621

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000353

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000211

AC:

AN:

232264

AF XY:

0.000262

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000916

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000356

Gnomad OTH exome

AF:

0.000175

GnomAD4 exome

AF:

0.000184

AC:

267

AN:

1453016

Hom.:

Cov.:

AF XY:

0.000204

AC XY:

147

AN XY:

722000

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33360

American (AMR)

AF:

0.0000921

AC:

AN:

43454

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25946

East Asian (EAS)

AF:

0.00

AC:

AN:

39358

South Asian (SAS)

AF:

0.000387

AC:

AN:

85290

European-Finnish (FIN)

AF:

0.0000193

AC:

AN:

51740

Middle Eastern (MID)

AF:

0.000178

AC:

AN:

5618

European-Non Finnish (NFE)

AF:

0.000199

AC:

220

AN:

1108220

Other (OTH)

AF:

0.000133

AC:

AN:

60030

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000184

AC:

AN:

152306

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74478

show subpopulations

African (AFR)

AF:

0.0000240

AC:

AN:

41588

American (AMR)

AF:

0.00

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5144

South Asian (SAS)

AF:

0.000621

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000353

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.507

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000369

Hom.:

Bravo

AF:

0.000174

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000698

AC:

ExAC

AF:

0.000215

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 14, 2021

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1102G>A (p.E368K) alteration is located in exon 10 (coding exon 10) of the FADS3 gene. This alteration results from a G to A substitution at nucleotide position 1102, causing the glutamic acid (E) at amino acid position 368 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.43

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.029

T;T;T

Eigen

Benign

-0.063

Eigen_PC

Benign

-0.098

FATHMM_MKL

Benign

0.53

LIST_S2

Uncertain

0.93

D;D;D

M_CAP

Benign

0.034

MetaRNN

Benign

0.12

T;T;T

MetaSVM

Benign

-0.74

MutationAssessor

Uncertain

2.5

.;M;.

PhyloP100

0.46

PrimateAI

Uncertain

0.54

PROVEAN

Uncertain

-3.0

D;D;D

REVEL

Benign

0.13

Sift

Uncertain

0.023

D;D;D

Sift4G

Uncertain

0.023

D;T;T

Polyphen

0.70

P;P;.

Vest4

0.45

MVP

0.36

MPC

0.43

ClinPred

0.14

GERP RS

3.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.30

gMVP

0.77

Mutation Taster

=99/1

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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11-61876169-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over