Genetic Variant LTF:p.Glu579Asp (chr3-46439467-C-A) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_002343.6(LTF):c.1737G>T(p.Glu579Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000267 in 1,609,048 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.00027 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00027 ( 5 hom. )

Consequence

LTF
NM_002343.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -5.03

Publications

45 publications found

Variant links:

Genes affected

LTF (HGNC:6720): (lactotransferrin) This gene is a member of the transferrin family of genes and its protein product is found in the secondary granules of neutrophils. The protein is a major iron-binding protein in milk and body secretions with an antimicrobial activity, making it an important component of the non-specific immune system. The protein demonstrates a broad spectrum of properties, including regulation of iron homeostasis, host defense against a broad range of microbial infections, anti-inflammatory activity, regulation of cellular growth and differentiation and protection against cancer development and metastasis. Antimicrobial, antiviral, antifungal and antiparasitic activity has been found for this protein and its peptides. Activity against both DNA and RNA viruses has been found, including activity against SARS-CoV-2, and HIV. [provided by RefSeq, Jul 2021]

LTF links:

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ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0049169958).

BS2

High Homozygotes in GnomAdExome4 at 5 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LTF	NM_002343.6 link	c.1737G>T	p.Glu579Asp	missense_variant	Exon 15 of 17	ENST00000231751.9	NP_002334.2	P02788-1V9HWI4
LTF	NM_001321121.2 link	c.1731G>T	p.Glu577Asp	missense_variant	Exon 15 of 17		NP_001308050.1	P02788Q2TUW9V9HWI4E7ER44
LTF	NM_001321122.2 link	c.1698G>T	p.Glu566Asp	missense_variant	Exon 18 of 20		NP_001308051.1	P02788V9HWI4B3KSL2
LTF	NM_001199149.2 link	c.1605G>T	p.Glu535Asp	missense_variant	Exon 15 of 17		NP_001186078.1	P02788-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LTF	ENST00000231751.9 link	c.1737G>T	p.Glu579Asp	missense_variant	Exon 15 of 17	1	NM_002343.6	ENSP00000231751.4		P02788-1

Frequencies

GnomAD3 genomes

AF:

0.000270

AC:

AN:

152102

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00310

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000191

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000492

AC:

121

AN:

245726

AF XY:

0.000692

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000120

Gnomad ASJ exome

AF:

0.00240

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000261

Gnomad OTH exome

AF:

0.000335

GnomAD4 exome

AF:

0.000266

AC:

388

AN:

1456828

Hom.:

Cov.:

AF XY:

0.000364

AC XY:

264

AN XY:

724480

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33168

American (AMR)

AF:

0.000183

AC:

AN:

43792

Ashkenazi Jewish (ASJ)

AF:

0.00194

AC:

AN:

25818

East Asian (EAS)

AF:

0.00

AC:

AN:

39644

South Asian (SAS)

AF:

0.00210

AC:

180

AN:

85750

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53320

Middle Eastern (MID)

AF:

0.00331

AC:

AN:

5734

European-Non Finnish (NFE)

AF:

0.0000973

AC:

108

AN:

1109478

Other (OTH)

AF:

0.000383

AC:

AN:

60124

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

Heterozygous variant carriers

104

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.000269

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.000390

AC XY:

AN XY:

74410

show subpopulations

African (AFR)

AF:

0.0000481

AC:

AN:

41560

American (AMR)

AF:

0.00

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00288

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5168

South Asian (SAS)

AF:

0.00311

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10594

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000191

AC:

AN:

67996

Other (OTH)

AF:

0.000473

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.512

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:

0.0000342

Hom.:

4411

ExAC

AF:

0.000478

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.097

BayesDel_addAF

Benign

-0.69

BayesDel_noAF

Benign

-0.77

CADD

Benign

0.0030

(source)

DANN

Benign

0.42

DEOGEN2

Benign

0.086

T;.;.;.

Eigen

Benign

-1.9

Eigen_PC

Benign

-2.0

FATHMM_MKL

Benign

0.013

LIST_S2

Benign

0.055

T;T;T;T

M_CAP

Benign

0.0034

MetaRNN

Benign

0.0049

T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

L;.;.;.

PhyloP100

-5.0

PrimateAI

Benign

0.31

PROVEAN

Benign

-1.4

N;N;N;N

REVEL

Benign

0.015

Sift

Benign

0.48

T;T;T;T

Sift4G

Benign

0.48

T;T;T;T

Polyphen

0.0

B;.;B;B

Vest4

0.029

MVP

0.25

MPC

0.064

ClinPred

0.011

GERP RS

-10

Varity_R

0.22

gMVP

0.66

Mutation Taster

=99/1

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over