Genetic Variant DEFB119:p.Glu43Lys (chr20-31377374-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

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

The NM_153289.4(DEFB119):c.127G>A(p.Glu43Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000248 in 1,613,990 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E43G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

DEFB119
NM_153289.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.53

Publications

3 publications found

Variant links:

Genes affected

DEFB119 (HGNC:18099): (defensin beta 119) This gene encodes a member of the beta subfamily of defensins. Beta-defensins are antimicrobial peptides that protect tissues and organs from infection by a variety of microorganisms. This gene is found in a cluster with other beta-defensin genes on the long arm of chromosome 20. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2014]

DEFB119 links:

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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
DEFB119	NM_153289.4 link	c.127G>A	p.Glu43Lys	missense_variant	Exon 2 of 2	ENST00000376321.4	NP_695021.2	Q8N690-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
DEFB119	ENST00000376321.4 link	c.127G>A	p.Glu43Lys	missense_variant	Exon 2 of 2	1	NM_153289.4	ENSP00000365499.3	Q8N690-1
DEFB119	ENST00000339144.3 link	c.*35G>A		3_prime_UTR_variant	Exon 3 of 3	1		ENSP00000345768.3	Q8N690-3
DEFB119	ENST00000492344.1 link	n.290G>A		non_coding_transcript_exon_variant	Exon 4 of 4	2

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

152078

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:

0.00115

Gnomad SAS

AF:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000438

AC:

AN:

251362

AF XY:

0.0000147

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000163

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000212

AC:

AN:

1461794

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

727190

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.0000447

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.000126

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000812

AC:

AN:

86230

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000108

AC:

AN:

1111952

Other (OTH)

AF:

0.0000662

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.480

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152196

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74406

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41520

American (AMR)

AF:

0.00

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.00116

AC:

AN:

5188

South Asian (SAS)

AF:

0.000208

AC:

AN:

4806

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10598

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68012

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000675

Hom.:

Bravo

AF:

0.0000416

ExAC

AF:

0.0000165

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 21, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.127G>A (p.E43K) alteration is located in exon 2 (coding exon 2) of the DEFB119 gene. This alteration results from a G to A substitution at nucleotide position 127, causing the glutamic acid (E) at amino acid position 43 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

Pathogenic

0.81

BayesDel_addAF

Uncertain

0.079

BayesDel_noAF

Uncertain

0.10

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.050

Eigen

Benign

0.18

Eigen_PC

Benign

0.019

FATHMM_MKL

Benign

0.18

LIST_S2

Benign

0.69

M_CAP

Pathogenic

0.40

MetaRNN

Uncertain

0.66

MetaSVM

Uncertain

0.16

PhyloP100

1.5

PROVEAN

Uncertain

-4.0

REVEL

Uncertain

0.39

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.71

MutPred

0.27

Gain of MoRF binding (P = 0.0074);

MVP

0.46

ClinPred

0.91

GERP RS

4.3

Varity_R

0.60

Mutation Taster

=94/6

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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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20-31377374-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