8-6936769-A-G
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Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate
The NM_001925.3(DEFA4):āc.131T>Cā(p.Ile44Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,422 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (ā ).
Frequency
Genomes: not found (cov: 33)
Exomes š: 6.8e-7 ( 0 hom. )
Consequence
DEFA4
NM_001925.3 missense
NM_001925.3 missense
Scores
2
4
11
Clinical Significance
Conservation
PhyloP100: 0.134
Genes affected
DEFA4 (HGNC:2763): (defensin alpha 4) 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. Several alpha defensin genes are clustered on chromosome 8. This gene differs from other genes of this family by an extra 83-base segment that is apparently the result of a recent duplication within the coding region. The protein encoded by this gene, defensin, alpha 4, is found in the neutrophils; it exhibits corticostatic activity and inhibits corticotropin stimulated corticosterone production. [provided by RefSeq, Oct 2014]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 4 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.888
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes
GnomAD3 genomes
Cov.:
33
GnomAD4 exome AF: 6.85e-7 AC: 1AN: 1460422Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0AN XY: 726330
GnomAD4 exome
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1
AN:
1460422
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Cov.:
31
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0
AN XY:
726330
Gnomad4 AFR exome
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GnomAD4 genome
GnomAD4 genome
Cov.:
33
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 | Feb 28, 2023 | The c.131T>C (p.I44T) alteration is located in exon 2 (coding exon 1) of the DEFA4 gene. This alteration results from a T to C substitution at nucleotide position 131, causing the isoleucine (I) at amino acid position 44 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Benign
DANN
Uncertain
DEOGEN2
Benign
T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Benign
N
M_CAP
Benign
T
MetaRNN
Pathogenic
D
MetaSVM
Benign
T
PrimateAI
Uncertain
T
PROVEAN
Uncertain
D
REVEL
Benign
Sift
Uncertain
D
Sift4G
Benign
T
Polyphen
D
Vest4
MutPred
Loss of stability (P = 0.0447);
MVP
MPC
ClinPred
T
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
No publications associated with this variant yet.