NM_032492.4:c.3G>A

Variant names:

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PVS1_ModeratePS1_ModeratePM2PP5

The NM_032492.4(JAGN1):c.3G>A(p.Met1?) variant causes a start lost change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000187 in 1,607,564 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

JAGN1
NM_032492.4 start_lost

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:3U:2

Conservation

PhyloP100: 8.25

Variant links:

Genes affected

JAGN1 (HGNC:26926): (jagunal homolog 1) The protein encoded by this gene is a transmembrane protein. It functions in the early secretory pathway and is necessary for neutrophil differentiation and survival. Mutations in this gene result in severe congenital neutropenia. [provided by RefSeq, Oct 2014]

JAGN1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

PVS1

Start lost variant, next in-frame start position is after 1 pathogenic variants. Next in-frame start position is after 72 CDS bases. Genomic position: 9890794. Lost 0.130 part of the original CDS.

PS1

Another start lost variant in NM_032492.4 (JAGN1) was described as [Likely_pathogenic] in Lovd

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 3-9890725-G-A is Pathogenic according to our data. Variant chr3-9890725-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 156113.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=2, Pathogenic=2}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
JAGN1	NM_032492.4 link	c.3G>A	p.Met1?	start_lost	Exon 1 of 2	ENST00000647897.1	NP_115881.3	Q8N5M9
JAGN1	NM_001363890.1 link	c.-266G>A		5_prime_UTR_variant	Exon 1 of 2		NP_001350819.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
JAGN1	ENST00000647897.1 link	c.3G>A	p.Met1?	start_lost	Exon 1 of 2		NM_032492.4	ENSP00000496942.1		Q8N5M9
JAGN1	ENST00000489724.2 link	c.3G>A	p.Met1?	start_lost	Exon 1 of 2	3		ENSP00000497724.1		A0A3B3ITE9

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000383

AC:

AN:

234802

Hom.:

AF XY:

0.0000157

AC XY:

AN XY:

127606

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000182

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:

0.0000189

Gnomad OTH exome

AF:

0.000177

GnomAD4 exome

AF:

0.0000172

AC:

AN:

1455344

Hom.:

Cov.:

AF XY:

0.0000111

AC XY:

AN XY:

723436

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000229

Gnomad4 ASJ exome

AF:

0.000116

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.000133

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74366

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000604

ExAC

AF:

0.0000413

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:3Uncertain:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Autosomal recessive severe congenital neutropenia due to JAGN1 deficiency

Pathogenic:2Uncertain:1

Sep 01, 2014

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Jul 05, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change affects the initiator methionine of the JAGN1 mRNA. The next in-frame methionine is located at codon 25. This variant is present in population databases (rs587777727, gnomAD 0.02%). Disruption of the initiator codon has been observed in individual(s) with primary immunodeficiency and/or severe congenital neutropenia (PMID: 25129144, 32888943, 33718801). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 156113). This variant disrupts the p.Met1 amino acid residue in JAGN1. Other variant(s) that disrupt this residue have been determined to be benign based on frequency in the population databases (c.1A>G, ExAC). Therefore the functional significance of this variant is uncertain. 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. -

Dec 28, 2021

Genomics Facility, Ludwig-Maximilians-Universität München

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Severe congenital neutropenia

Pathogenic:1

Jan 01, 2013

Klein lab, Ludwig-Maximilians-University

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: in vitro

Neutropenia patients with mutations in JAGN1 respond poorly to treatment with recombinant human G-CSF -

not provided

Uncertain:1

May 18, 2021

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Initiation codon variant in a gene for which loss-of-function is not a known mechanism of disease; Another variant affecting the initiation codon, c.1A>G, is observed in 0.35% (940/266206 alleles) in large population cohorts, including 14 homozygous observations (Lek et al., 2016); This variant is associated with the following publications: (PMID: 32419428, 25129144, 32888943, 33718801) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.43

BayesDel_noAF

Pathogenic

0.48

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.45

T;.;T

Eigen

Pathogenic

0.80

Eigen_PC

Pathogenic

0.81

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.90

.;D;D

M_CAP

Pathogenic

0.69

MetaRNN

Pathogenic

0.93

D;D;D

MetaSVM

Uncertain

0.062

PROVEAN

Uncertain

-3.6

D;.;.

REVEL

Pathogenic

0.87

Sift

Pathogenic

0.0

D;.;.

Sift4G

Pathogenic

0.0

D;.;.

Polyphen

1.0

D;.;D

Vest4

0.97

MutPred

0.74

Loss of MoRF binding (P = 0.0717);Loss of MoRF binding (P = 0.0717);Loss of MoRF binding (P = 0.0717);

MVP

0.74

ClinPred

0.96

GERP RS

6.0

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

2.7

Varity_R

0.90

gMVP

0.48

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