4-9450453-C-G

Variant names:

• chr4-9450453-C-G
• rs77388586
• NM_001040448.3:c.152C>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001040448.3(DEFB131A):​c.152C>G​(p.Ala51Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000124 in 1,610,840 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A51D) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: DEFB131A NM_001040448.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.676
• Publications: 0 publications found

Genes affected

DEFB131A (HGNC:18108): (defensin beta 131A) Defensins are cysteine-rich cationic polypeptides that are important in the immunologic response to invading microorganisms. The antimicrobial protein encoded by this gene is secreted and is a member of the beta defensin protein family. Beta defensin genes are found in several clusters throughout the genome, with this gene mapping to a cluster at 4p16. [provided by RefSeq, Nov 2014]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.053865522).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001040448.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DEFB131A	NM_001040448.3	MANE Select	c.152C>G	p.Ala51Gly	missense	Exon 2 of 2	NP_001035538.2	P59861

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DEFB131A	ENST00000334879.2	TSL:1 MANE Select	c.152C>G	p.Ala51Gly	missense	Exon 2 of 2	ENSP00000335538.1	P59861

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152146 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000406 AC: 1 AN: 246554 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000560

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.86e-7 AC: 1 AN: 1458694 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 725572

African (AFR) AF: 0.00 AC: 0 AN: 33392

American (AMR) AF: 0.00 AC: 0 AN: 44630

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26110

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39610

South Asian (SAS) AF: 0.00 AC: 0 AN: 85966

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53396

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4130

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111308

Other (OTH) AF: 0.00 AC: 0 AN: 60152

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152146 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74318

African (AFR) AF: 0.00 AC: 0 AN: 41442

American (AMR) AF: 0.00 AC: 0 AN: 15270

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10604

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68024

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.00000828 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.45	T
BayesDel_noAF	Benign	-0.71
CADD	Benign	0.16
DANN	Benign	0.21
DEOGEN2	Benign	0.024	T
Eigen	Benign	-1.5
Eigen_PC	Benign	-1.6
FATHMM_MKL	Benign	0.0030	N
LIST_S2	Benign	0.30	T
M_CAP	Benign	0.00083	T
MetaRNN	Benign	0.054	T
MetaSVM	Benign	-0.98	T
PhyloP100		-0.68
PrimateAI	Benign	0.43	T
PROVEAN	Uncertain	-2.4	N
REVEL	Benign	0.012
Sift	Benign	0.13	T
Sift4G	Benign	0.19	T
Polyphen		0.089	B
Vest4		0.26
MutPred		0.28		Gain of relative solvent accessibility (P = 0.0098)
MVP		0.014
MPC		0.00037
ClinPred		0.042	T
GERP RS		-0.88
Varity_R		0.061
gMVP		0.040
Mutation Taster		=92/8	polymorphism

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

Other links and lift over

dbSNP: rs77388586; hg19: chr4-9452179;