chr8-7016700-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BP4_Strong

The NM_005217.4(DEFA3):c.151G>A(p.Glu51Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. 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. E51Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., cov: 27)

Exomes 𝑓: 0.000016 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

DEFA3
NM_005217.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.432

Variant links:

Genes affected

DEFA3 (HGNC:2762): (defensin alpha 3) Defensins are a family of antimicrobial and cytotoxic peptides thought to be involved in host defense. They are abundant in the granules of neutrophils and also found in the epithelia of mucosal surfaces such as those of the intestine, respiratory tract, urinary tract, and vagina. Members of the defensin family are highly similar in protein sequence and distinguished by a conserved cysteine motif. The protein encoded by this gene, defensin, alpha 3, is found in the microbicidal granules of neutrophils and likely plays a role in phagocyte-mediated host defense. Several alpha defensin genes are clustered on chromosome 8. This gene differs from defensin, alpha 1 by only one amino acid. This gene and the gene encoding defensin, alpha 1 are both subject to copy number variation. [provided by RefSeq, Oct 2014]

DEFA3 links:

LOC124901875 (HGNC:):

LOC124901875 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.067493826).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DEFA3	NM_005217.4 link	c.151G>A	p.Glu51Lys	missense_variant	Exon 2 of 3	ENST00000327857.7	NP_005208.1	P59666Q6EZE9
DEFA3	XM_011534741.3 link	c.172G>A	p.Glu58Lys	missense_variant	Exon 3 of 4		XP_011533043.1
LOC124901875	XR_007060790.1 link	n.228C>T		non_coding_transcript_exon_variant	Exon 2 of 2
LOC124901875	XR_007060791.1 link	n.381C>T		non_coding_transcript_exon_variant	Exon 2 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DEFA3	ENST00000327857.7 link	c.151G>A	p.Glu51Lys	missense_variant	Exon 2 of 3	1	NM_005217.4	ENSP00000328359.2		P59666

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

146618

Hom.:

Cov.:

FAILED QC

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000688

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000194

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000151

Gnomad OTH

AF:

0.000510

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000161

AC:

AN:

1307218

Hom.:

Cov.:

AF XY:

0.0000154

AC XY:

AN XY:

648456

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000212

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000276

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000896

Gnomad4 OTH exome

AF:

0.0000551

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000273

AC:

AN:

146618

Hom.:

Cov.:

AF XY:

0.0000280

AC XY:

AN XY:

71498

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000688

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000194

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000151

Gnomad4 OTH

AF:

0.000510

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 29, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.151G>A (p.E51K) alteration is located in exon 2 (coding exon 1) of the DEFA3 gene. This alteration results from a G to A substitution at nucleotide position 151, causing the glutamic acid (E) at amino acid position 51 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

-0.30

BayesDel_noAF

Benign

-0.67

CADD

Benign

2.0

DANN

Benign

0.88

DEOGEN2

Benign

0.029

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.0034

LIST_S2

Benign

0.53

M_CAP

Benign

0.0013

MetaRNN

Benign

0.067

MetaSVM

Benign

-1.0

PrimateAI

Benign

0.41

PROVEAN

Benign

-2.2

REVEL

Benign

0.026

Sift

Benign

0.21

Sift4G

Benign

0.22

Polyphen

0.0

Vest4

0.084

MutPred

0.49

Gain of methylation at E51 (P = 0.0071);

MVP

0.18

MPC

1.8

ClinPred

0.069

GERP RS

1.1

Varity_R

0.048

gMVP

0.22

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over