chr19-852329-A-G

Position:

• chr19-852329-A-G

Variant summary

Our verdict is Pathogenic. Variant got 20 ACMG points: 20P and 0B. PVS1 PS1_Moderate PM2 PP5_Very_Strong

The NM_001972.4(ELANE):​c.1A>G​(p.Met1?) variant causes a start lost change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ELANE NM_001972.4 start_lost
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:2
• Conservation: PhyloP100: 1.97

Genes affected

ELANE (HGNC:3309): (elastase, neutrophil expressed) Elastases form a subfamily of serine proteases that hydrolyze many proteins in addition to elastin. Humans have six elastase genes which encode structurally similar proteins. The encoded preproprotein is proteolytically processed to generate the active protease. Following activation, this protease hydrolyzes proteins within specialized neutrophil lysosomes, called azurophil granules, as well as proteins of the extracellular matrix. The enzyme may play a role in degenerative and inflammatory diseases through proteolysis of collagen-IV and elastin. This protein also degrades the outer membrane protein A (OmpA) of E. coli as well as the virulence factors of such bacteria as Shigella, Salmonella and Yersinia. Mutations in this gene are associated with cyclic neutropenia and severe congenital neutropenia (SCN). This gene is present in a gene cluster on chromosome 19. [provided by RefSeq, Jan 2016]

ACMG classification

Verdict is Pathogenic. Variant got 20 ACMG points.

• PVS1: Start lost variant, no new inframe start found.
• PS1: Another start lost variant in NM_001972.4 (ELANE) was described as [Pathogenic] in ClinVar as 988327
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 19-852329-A-G is Pathogenic according to our data. Variant chr19-852329-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 1343367.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ELANE	NM_001972.4	c.1A>G	p.Met1?	start_lost	1/5	ENST00000263621.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ELANE	ENST00000263621.2	c.1A>G	p.Met1?	start_lost	1/5	1	NM_001972.4	P1
ELANE	ENST00000590230.5	c.1A>G	p.Met1?	start_lost	2/6	5		P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Cyclical neutropenia;C1859966:Neutropenia, severe congenital, 1, autosomal dominant Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Invitae

Sep 09, 2021

This sequence change affects the initiator methionine of the ELANE mRNA. The next in-frame methionine is located at codon 44. For these reasons, this variant has been classified as Pathogenic. Experimental studies have shown that disruption of the initiator codon affects ELANE function (PMID: 24184683). Algorithms developed to predict the effect of variants on protein structure and function are not available or were not evaluated for this variant. This variant is also known as 1287A>G I1-29A>G. Disruption of the initiator codon has been observed in individual(s) with severe congenital neutropenia (PMID: 14962902, 21618407, 23463630, 29076228). In at least one individual the variant was observed to be de novo. It has also been observed to segregate with disease in related individuals. This variant is not present in population databases (ExAC no frequency). -

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Mayo Clinic Laboratories, Mayo Clinic

Nov 17, 2021

PP1_moderate, PM2_supporting, PM4, PS2, PS4_moderate, PVS1_moderate -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.44	D
BayesDel_noAF	Pathogenic	0.40
CADD	Benign	17
DANN	Benign	0.93
DEOGEN2	Benign	0.36	T;T
Eigen	Benign	-0.14
Eigen_PC	Benign	-0.24
FATHMM_MKL	Benign	0.40	N
LIST_S2	Uncertain	0.90	.;D
M_CAP	Pathogenic	0.88	D
MetaRNN	Pathogenic	0.99	D;D
MetaSVM	Uncertain	0.31	D
MutationTaster	Benign	1.0	D;D
PROVEAN	Benign	-1.3	.;N
REVEL	Uncertain	0.61
Sift	Pathogenic	0.0	.;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		0.46	P;P
Vest4		0.94
MutPred		0.99		Gain of methylation at R5 (P = 0.0955);Gain of methylation at R5 (P = 0.0955);
MVP		0.99
ClinPred		0.64	D
GERP RS		2.1
Varity_R		0.95
gMVP		0.76

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-852329;