NM_000200.3:c.40C>T

Variant names:

• chr4-70030780-C-T
• rs376358599
• NM_000200.3:c.40C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000200.3(HTN3):​c.40C>T​(p.Leu14Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000248 in 1,610,996 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 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. L14I) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: HTN3 NM_000200.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.98
• Publications: 0 publications found

Genes affected

HTN3 (HGNC:5284): (histatin 3) This gene encodes a member of the histatin family of small, histidine-rich, cationic proteins. They function as antimicrobial peptides and are important components of the innate immune system. Histatins are found in saliva and exhibit antibacterial, antifungal activities and function in wound healing. [provided by RefSeq, Sep 2014]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.07228559).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000200.3. 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
	HTN3	NM_000200.3	MANE Select	c.40C>T	p.Leu14Phe	missense	Exon 2 of 6	NP_000191.1	P15516

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HTN3	ENST00000673563.1	MANE Select	c.40C>T	p.Leu14Phe	missense	Exon 2 of 6	ENSP00000500623.1	P15516
	HTN3	ENST00000530128.5	TSL:2	c.40C>T	p.Leu14Phe	missense	Exon 2 of 6	ENSP00000432561.1	P15516
	HTN3	ENST00000381057.3	TSL:2	c.40C>T	p.Leu14Phe	missense	Exon 2 of 5	ENSP00000370445.3	X6RAH8

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152200 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

GnomAD4 exome AF: 0.00000206 AC: 3 AN: 1458796 Hom.: 0 Cov.: 28 AF XY: 0.00000413 AC XY: 3 AN XY: 725928

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33404

American (AMR) AF: 0.00 AC: 0 AN: 44578

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26090

East Asian (EAS) AF: 0.00 AC: 0 AN: 39658

South Asian (SAS) AF: 0.00 AC: 0 AN: 86198

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53390

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5754

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1109436

Other (OTH) AF: 0.00 AC: 0 AN: 60288

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.00109982), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152200 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74356

African (AFR) AF: 0.00 AC: 0 AN: 41456

American (AMR) AF: 0.00 AC: 0 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

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

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68032

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.30	T
BayesDel_noAF	Benign	-0.67
CADD	Benign	0.26
DANN	Benign	0.32
DEOGEN2	Benign	0.0062	T
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.5
FATHMM_MKL	Benign	0.0044	N
M_CAP	Benign	0.0038	T
MetaRNN	Benign	0.072	T
MetaSVM	Benign	-0.99	T
PhyloP100		-2.0
PrimateAI	Benign	0.31	T
PROVEAN	Benign	-1.9	N
REVEL	Benign	0.024
Sift	Uncertain	0.010	D
Sift4G	Uncertain	0.012	D
Polyphen		0.19	B
Vest4		0.14
MutPred		0.21		Loss of helix (P = 0.1299)
MVP		0.040
MPC		0.023
ClinPred		0.11	T
GERP RS		-2.9
Varity_R		0.063
gMVP		0.011
Mutation Taster		=96/4	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs376358599; hg19: chr4-70896497;