18-50984305-C-G

Position:

• chr18-50984305-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_018696.3(ELAC1):​c.367C>G​(p.Leu123Val) 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 benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ELAC1 NM_018696.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.43

Genes affected

ELAC1 (HGNC:14197): (elaC ribonuclease Z 1) Predicted to enable 3'-tRNA processing endoribonuclease activity. Predicted to be involved in tRNA 3'-trailer cleavage, endonucleolytic. Located in cytosol and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

LOC107985152 (HGNC:):

ACMG classification

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=0.25446534).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ELAC1	NM_018696.3	c.367C>G	p.Leu123Val	missense_variant	3/4	ENST00000269466.8	NP_061166.1
LOC107985152	XR_007066371.1	n.10596G>C		non_coding_transcript_exon_variant	2/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ELAC1	ENST00000269466.8	c.367C>G	p.Leu123Val	missense_variant	3/4	1	NM_018696.3	ENSP00000269466	P1
ELAC1	ENST00000591429.1	c.367C>G	p.Leu123Val	missense_variant	3/3	1		ENSP00000464770
ELAC1	ENST00000588577.5	c.158-182C>G		intron_variant		2		ENSP00000467389

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 20, 2024

The c.367C>G (p.L123V) alteration is located in exon 3 (coding exon 2) of the ELAC1 gene. This alteration results from a C to G substitution at nucleotide position 367, causing the leucine (L) at amino acid position 123 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.25
BayesDel_addAF	Uncertain	0.059	T
BayesDel_noAF	Benign	-0.15
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.097	T;T
Eigen	Benign	0.14
Eigen_PC	Benign	0.19
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Benign	0.84	T;T
M_CAP	Benign	0.024	T
MetaRNN	Benign	0.25	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.6	L;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.54	T
PROVEAN	Benign	-0.62	N;.
REVEL	Benign	0.21
Sift	Uncertain	0.014	D;.
Sift4G	Benign	0.29	T;T
Polyphen		0.87	P;.
Vest4		0.50
MutPred		0.52		Loss of sheet (P = 0.0104);Loss of sheet (P = 0.0104);
MVP		0.22
MPC		0.16
ClinPred		0.87	D
GERP RS		4.0
Varity_R		0.37
gMVP		0.55

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

LitVar

Other links and lift over

dbSNP: rs1908040739; hg19: chr18-48510675;