Genetic Variant NM_004462.5:c.19C>A (chr8-11802851-C-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_004462.5(FDFT1):c.19C>A(p.Leu7Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000509 in 1,611,404 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

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

Exomes 𝑓: 0.000054 ( 1 hom. )

Consequence

FDFT1
NM_004462.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.02

Publications

0 publications found

Variant links:

Genes affected

FDFT1 (HGNC:3629): (farnesyl-diphosphate farnesyltransferase 1) This gene encodes a membrane-associated enzyme located at a branch point in the mevalonate pathway. The encoded protein is the first specific enzyme in cholesterol biosynthesis, catalyzing the dimerization of two molecules of farnesyl diphosphate in a two-step reaction to form squalene. [provided by RefSeq, Jul 2008]

FDFT1 Gene-Disease associations (from GenCC):

retinitis pigmentosa
Inheritance: AR Classification: LIMITED Submitted by: G2P
squalene synthase deficiency
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P

FDFT1 links:

ENSG00000255046 (HGNC:):

ENSG00000255046 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.03349048).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004462.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
FDFT1	NM_004462.5	MANE Select	c.19C>A	p.Leu7Ile	missense	Exon 1 of 8	NP_004453.3
FDFT1	NM_001287742.2		c.19C>A	p.Leu7Ile	missense	Exon 3 of 10	NP_001274671.1	Q6IAX1
FDFT1	NM_001287743.2		c.19C>A	p.Leu7Ile	missense	Exon 2 of 9	NP_001274672.1	P37268-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
FDFT1	ENST00000220584.9	TSL:1 MANE Select	c.19C>A	p.Leu7Ile	missense	Exon 1 of 8	ENSP00000220584.4	P37268-1
FDFT1	ENST00000527045.1	TSL:1	n.68C>A		non_coding_transcript_exon	Exon 1 of 2
FDFT1	ENST00000529464.5	TSL:1	n.19C>A		non_coding_transcript_exon	Exon 1 of 6	ENSP00000434770.1	E9PNJ2

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152242

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000110

AC:

AN:

244592

AF XY:

0.000136

show subpopulations

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

AF:

0.0000541

AC:

AN:

1459044

Hom.:

Cov.:

AF XY:

0.0000799

AC XY:

AN XY:

725614

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33360

American (AMR)

AF:

0.00

AC:

AN:

44454

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26012

East Asian (EAS)

AF:

0.00

AC:

AN:

39632

South Asian (SAS)

AF:

0.000899

AC:

AN:

85634

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53188

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

9.00e-7

AC:

AN:

1110732

Other (OTH)

AF:

0.0000166

AC:

AN:

60268

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.489

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

AN:

152360

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74500

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41594

American (AMR)

AF:

0.00

AC:

AN:

15312

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.000621

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.00

Hom.:

ExAC

AF:

0.000148

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Squalene synthase deficiency (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.097

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.25

CADD

Benign

(source)

DANN

Benign

0.90

DEOGEN2

Benign

0.35

Eigen

Benign

-0.34

Eigen_PC

Benign

-0.35

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.87

M_CAP

Uncertain

0.17

MetaRNN

Benign

0.033

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.8

PhyloP100

1.0

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-0.58

REVEL

Benign

0.16

Sift

Benign

0.17

Sift4G

Benign

0.076

Polyphen

0.49

Vest4

0.66

MutPred

0.54

Gain of ubiquitination at K5 (P = 0.1128)

MVP

0.40

ClinPred

0.11

GERP RS

-0.38

PromoterAI

-0.048

Neutral

(source)

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

2.6

Varity_R

0.074

Mutation Taster

=94/6

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over