19-855987-C-A

Variant names:

• chr19-855987-C-A
• rs201664319
• NM_001972.4:c.627C>A

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM1 PM2 PP2 PP3

The NM_001972.4(ELANE):​c.627C>A​(p.Asn209Lys) variant causes a missense 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. N209N) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ELANE NM_001972.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.37
• Publications: 1 publications found

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]

ELANE Gene-Disease associations (from GenCC):

• neutropenia

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• cyclic hematopoiesis

  Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
• autosomal dominant severe congenital neutropenia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM1: In a hotspot region, there are 7 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 10 uncertain in NM_001972.4
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 53 curated pathogenic missense variants (we use a threshold of 10). The gene has 11 curated benign missense variants. Gene score misZ: 0.71822 (below the threshold of 3.09). Trascript score misZ: -0.55649 (below the threshold of 3.09). GenCC associations: The gene is linked to autosomal dominant severe congenital neutropenia, cyclic hematopoiesis, neutropenia.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.8

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ELANE	NM_001972.4	c.627C>A	p.Asn209Lys	missense_variant	Exon 5 of 5	ENST00000263621.2	NP_001963.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ELANE	ENST00000263621.2	c.627C>A	p.Asn209Lys	missense_variant	Exon 5 of 5	1	NM_001972.4	ENSP00000263621.1
ELANE	ENST00000590230.5	c.627C>A	p.Asn209Lys	missense_variant	Exon 6 of 6	5		ENSP00000466090.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.42
BayesDel_addAF	Benign	-0.0094	T
BayesDel_noAF	Benign	-0.25
CADD	Benign	6.2
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.78	D;D
Eigen	Benign	-0.29
Eigen_PC	Benign	-0.44
FATHMM_MKL	Benign	0.14	N
LIST_S2	Benign	0.48	.;T
M_CAP	Pathogenic	0.58	D
MetaRNN	Pathogenic	0.80	D;D
MetaSVM	Uncertain	-0.028	T
MutationAssessor	Benign	1.1	L;L
PhyloP100		-2.4
PrimateAI	Uncertain	0.51	T
PROVEAN	Uncertain	-2.9	.;D
REVEL	Uncertain	0.51
Sift	Benign	0.20	.;T
Sift4G	Uncertain	0.030	D;D
Polyphen		0.99	D;D
Vest4		0.27
MutPred		0.59		Gain of methylation at N209 (P = 0);Gain of methylation at N209 (P = 0);
MVP		0.93
MPC		1.3
ClinPred		0.66	D
GERP RS		1.6
Varity_R		0.23
gMVP		0.55
Mutation Taster		=68/32	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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: rs201664319; hg19: chr19-855987;