rs1554737851

Variant names:

• chr9-108874918-T-C
• rs1554737851
• NM_003640.5:c.3908A>G

Variant summary

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

The NM_003640.5(ELP1):​c.3908A>G​(p.Gln1303Arg) variant causes a missense change. 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: 33)
• Consequence: ELP1 NM_003640.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.66

Genes affected

ELP1 (HGNC:5959): (elongator acetyltransferase complex subunit 1) The protein encoded by this gene is a scaffold protein and a regulator for three different kinases involved in proinflammatory signaling. The encoded protein can bind NF-kappa-B-inducing kinase and I-kappa-B kinases through separate domains and assemble them into an active kinase complex. Mutations in this gene have been associated with familial dysautonomia. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jan 2016]

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=0.20674583).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ELP1	NM_003640.5	c.3908A>G	p.Gln1303Arg	missense_variant	Exon 36 of 37	ENST00000374647.10	NP_003631.2
ELP1	NM_001318360.2	c.3566A>G	p.Gln1189Arg	missense_variant	Exon 36 of 37		NP_001305289.1
ELP1	NM_001330749.2	c.2861A>G	p.Gln954Arg	missense_variant	Exon 34 of 35		NP_001317678.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ELP1	ENST00000374647.10	c.3908A>G	p.Gln1303Arg	missense_variant	Exon 36 of 37	1	NM_003640.5	ENSP00000363779.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 28

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Oct 21, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with IKBKAP-related disease. This variant is not present in population databases (ExAC no frequency). This sequence change replaces glutamine with arginine at codon 1303 of the IKBKAP protein (p.Gln1303Arg). The glutamine residue is moderately conserved and there is a small physicochemical difference between glutamine and arginine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.084
BayesDel_addAF	Benign	-0.085	T
BayesDel_noAF	Benign	-0.36
CADD	Benign	20
DANN	Uncertain	1.0
DEOGEN2	Benign	0.12	T;T
Eigen	Uncertain	0.23
Eigen_PC	Uncertain	0.27
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Benign	0.48	T;T
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.21	T;T
MetaSVM	Benign	-0.95	T
MutationAssessor	Uncertain	2.5	M;.
PrimateAI	Benign	0.35	T
PROVEAN	Benign	-1.5	N;N
REVEL	Benign	0.12
Sift	Benign	0.50	T;T
Sift4G	Benign	0.56	T;T
Polyphen		0.91	P;.
Vest4		0.28
MutPred		0.44		Gain of phosphorylation at T1305 (P = 0.0749);.;
MVP		0.59
MPC		0.18
ClinPred		0.90	D
GERP RS		4.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.052
gMVP		0.21

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

Other links and lift over

dbSNP: rs1554737851; hg19: chr9-111637198;