8-7415020-T-C
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Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM1BP4_Strong
The NM_001205266.2(DEFB4B):āc.136A>Gā(p.Arg46Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 13/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (ā ).
Frequency
Genomes: š 0.00010 ( 0 hom., cov: 26)
Exomes š: 0.000015 ( 0 hom. )
Failed GnomAD Quality Control
Consequence
DEFB4B
NM_001205266.2 missense
NM_001205266.2 missense
Scores
15
Clinical Significance
Conservation
PhyloP100: -2.81
Genes affected
DEFB4B (HGNC:30193): (defensin beta 4B) Defensins form a family of microbicidal and cytotoxic peptides made by neutrophils. Members of the defensin family are highly similar in protein sequence. This gene encodes defensin, beta 4, an antibiotic peptide which is locally regulated by inflammation. [provided by RefSeq, Oct 2014]
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ACMG classification
Classification made for transcript
Verdict is Likely_benign. Variant got -2 ACMG points.
PM1
In a mutagenesis_site No impact on fungal cell permeabilization. Impaired antifungal activity. (size 0) in uniprot entity DFB4A_HUMAN
BP4
Computational evidence support a benign effect (MetaRNN=0.035879046).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
DEFB4B | NM_001205266.2 | c.136A>G | p.Arg46Gly | missense_variant | 2/2 | ENST00000318157.3 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
DEFB4B | ENST00000318157.3 | c.136A>G | p.Arg46Gly | missense_variant | 2/2 | 1 | NM_001205266.2 | P1 |
Frequencies
GnomAD3 genomes AF: 0.00 AC: 15AN: 147800Hom.: 0 Cov.: 26 FAILED QC
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GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.0000151 AC: 19AN: 1261614Hom.: 0 Cov.: 20 AF XY: 0.0000111 AC XY: 7AN XY: 631412
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GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.000101 AC: 15AN: 147914Hom.: 0 Cov.: 26 AF XY: 0.000167 AC XY: 12AN XY: 72006
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Apr 20, 2024 | The c.136A>G (p.R46G) alteration is located in exon 2 (coding exon 2) of the DEFB4B gene. This alteration results from a A to G substitution at nucleotide position 136, causing the arginine (R) at amino acid position 46 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Benign
N
M_CAP
Benign
T
MetaRNN
Benign
T
MetaSVM
Benign
T
MutationTaster
Benign
N
PrimateAI
Benign
T
PROVEAN
Benign
N
REVEL
Benign
Sift
Benign
T
Sift4G
Benign
T
Vest4
MutPred
Loss of stability (P = 0.0254);
MVP
ClinPred
T
GERP RS
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at