chr17-13016904-A-G

Position:

• chr17-13016904-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_018127.7(ELAC2):​c.325T>C​(p.Phe109Leu) variant causes a missense change. 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 Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: ELAC2 NM_018127.7 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.96

Genes affected

ELAC2 (HGNC:14198): (elaC ribonuclease Z 2) The protein encoded by this gene has a C-terminal domain with tRNA 3′ processing endoribonuclease activity, which catalyzes the removal of the 3' trailer from precursor tRNAs. The protein also interacts with activated Smad family member 2 (Smad2) and its nuclear partner forkhead box H1 (also known as FAST-1), and reduced expression can suppress transforming growth factor-beta induced growth arrest. Mutations in this gene result in an increased risk of prostate cancer. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2009]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.829

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ELAC2	NM_018127.7	c.325T>C	p.Phe109Leu	missense_variant	3/24	ENST00000338034.9	NP_060597.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ELAC2	ENST00000338034.9	c.325T>C	p.Phe109Leu	missense_variant	3/24	1	NM_018127.7	ENSP00000337445	P2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Combined oxidative phosphorylation defect type 17 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 16, 2016

This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a ELAC2-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). In summary, this variant is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. This sequence change replaces phenylalanine with leucine at codon 109 of the ELAC2 protein (p.Phe109Leu). The phenylalanine residue is highly conserved and there is a small physicochemical difference between phenylalanine and leucine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.37	D
BayesDel_noAF	Pathogenic	0.29
CADD	Pathogenic	27
DANN	Uncertain	0.98
DEOGEN2	Benign	0.27	T;.;.;T;T;T;T;T;.
Eigen	Uncertain	0.63
Eigen_PC	Uncertain	0.59
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Benign	0.78	T;T;T;T;T;T;T;T;T
M_CAP	Uncertain	0.094	D
MetaRNN	Pathogenic	0.83	D;D;D;D;D;D;D;D;D
MetaSVM	Benign	-0.52	T
MutationAssessor	Benign	1.5	L;.;L;.;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.77	T
PROVEAN	Pathogenic	-5.3	D;D;D;.;.;.;.;.;.
REVEL	Uncertain	0.40
Sift	Pathogenic	0.0	D;D;D;.;.;.;.;.;.
Sift4G	Pathogenic	0.0	D;D;D;.;D;.;.;.;D
Polyphen		1.0	D;D;.;.;.;.;.;.;.
Vest4		0.59
MutPred		0.68		Gain of MoRF binding (P = 0.1233);.;Gain of MoRF binding (P = 0.1233);.;.;.;.;.;Gain of MoRF binding (P = 0.1233);
MVP		0.96
MPC		0.58
ClinPred		0.98	D
GERP RS		4.5
Varity_R		0.89
gMVP		0.85

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: rs1060502163; hg19: chr17-12920221;