Variant rs777619516 details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_199242.3(UNC13D):c.71G>A(p.Arg24His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000185 in 1,460,290 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 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. R24C) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

UNC13D
NM_199242.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.588

Variant links:

Genes affected

UNC13D (HGNC:23147): (unc-13 homolog D) This gene encodes a protein that is a member of the UNC13 family, containing similar domain structure as other family members but lacking an N-terminal phorbol ester-binding C1 domain present in other Munc13 proteins. The protein appears to play a role in vesicle maturation during exocytosis and is involved in regulation of cytolytic granules secretion. Mutations in this gene are associated with familial hemophagocytic lymphohistiocytosis type 3, a genetically heterogeneous, rare autosomal recessive disorder. [provided by RefSeq, Jul 2008]

UNC13D links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.09926015).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
UNC13D	NM_199242.3 linkuse as main transcript	c.71G>A	p.Arg24His	missense_variant	1/32	ENST00000207549.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
UNC13D	ENST00000207549.9 linkuse as main transcript	c.71G>A	p.Arg24His	missense_variant	1/32	1	NM_199242.3	P1	Q70J99-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000562

AC:

AN:

249264

Hom.:

AF XY:

0.0000370

AC XY:

AN XY:

135168

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000347

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000185

AC:

AN:

1460290

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

726506

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000313

Gnomad4 ASJ exome

AF:

0.000191

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000227

Hom.:

Bravo

AF:

0.0000680

ExAC

AF:

0.0000577

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Familial hemophagocytic lymphohistiocytosis 3

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jul 26, 2022

This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 24 of the UNC13D protein (p.Arg24His). This variant is present in population databases (rs777619516, gnomAD 0.03%). This missense change has been observed in individual(s) with hemophagocytic lymphohistiocytosis (PMID: 29665027). ClinVar contains an entry for this variant (Variation ID: 568424). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Not Available"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Not Available"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.28

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.11

T;.;.;T;T

Eigen

Benign

-0.11

Eigen_PC

Benign

-0.14

FATHMM_MKL

Benign

0.54

LIST_S2

Benign

0.75

T;T;T;T;T

M_CAP

Benign

0.059

MetaRNN

Benign

0.099

T;T;T;T;T

MetaSVM

Benign

-0.80

MutationAssessor

Benign

1.6

L;L;.;.;.

MutationTaster

Benign

0.96

N;N

PrimateAI

Benign

0.36

PROVEAN

Benign

-0.63

N;N;.;.;.

REVEL

Benign

0.17

Sift

Uncertain

0.0060

D;D;.;.;.

Sift4G

Uncertain

0.034

D;D;.;D;.

Polyphen

0.97

D;.;.;.;.

Vest4

0.21

MutPred

0.27

Loss of MoRF binding (P = 0.0641);Loss of MoRF binding (P = 0.0641);Loss of MoRF binding (P = 0.0641);.;Loss of MoRF binding (P = 0.0641);

MVP

0.67

MPC

0.30

ClinPred

0.28

GERP RS

1.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.059

gMVP

0.35

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

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