rs751328130

chr2-29296995-C-Achr2-29296995-C-Gchr2-29296995-C-T

Variant summary

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

The NM_004304.5(ALK):c.1710G>T(p.Glu570Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E570A) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: ALK NM_004304.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 1.25

Genes affected

ALK (HGNC:427): (ALK receptor tyrosine kinase) This gene encodes a receptor tyrosine kinase, which belongs to the insulin receptor superfamily. This protein comprises an extracellular domain, an hydrophobic stretch corresponding to a single pass transmembrane region, and an intracellular kinase domain. It plays an important role in the development of the brain and exerts its effects on specific neurons in the nervous system. This gene has been found to be rearranged, mutated, or amplified in a series of tumours including anaplastic large cell lymphomas, neuroblastoma, and non-small cell lung cancer. The chromosomal rearrangements are the most common genetic alterations in this gene, which result in creation of multiple fusion genes in tumourigenesis, including ALK (chromosome 2)/EML4 (chromosome 2), ALK/RANBP2 (chromosome 2), ALK/ATIC (chromosome 2), ALK/TFG (chromosome 3), ALK/NPM1 (chromosome 5), ALK/SQSTM1 (chromosome 5), ALK/KIF5B (chromosome 10), ALK/CLTC (chromosome 17), ALK/TPM4 (chromosome 19), and ALK/MSN (chromosome X).[provided by RefSeq, Jan 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ALK	NM_004304.5	c.1710G>T	p.Glu570Asp	missense_variant	9/29	ENST00000389048.8
ALK	XR_001738688.3	n.2637G>T		non_coding_transcript_exon_variant	9/18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ALK	ENST00000389048.8	c.1710G>T	p.Glu570Asp	missense_variant	9/29	1	NM_004304.5	P1
ALK	ENST00000618119.4	c.579G>T	p.Glu193Asp	missense_variant	8/28	5
ALK	ENST00000498037.1	n.265G>T		non_coding_transcript_exon_variant	3/5	4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Neuroblastoma, susceptibility to, 3 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Mar 06, 2021

This variant is not present in population databases (ExAC no frequency). 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 disruptive, 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 ALK-related conditions. This sequence change replaces glutamic acid with aspartic acid at codon 570 of the ALK protein (p.Glu570Asp). The glutamic acid residue is highly conserved and there is a small physicochemical difference between glutamic acid and aspartic acid. -

Hereditary cancer-predisposing syndrome Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 01, 2023

The p.E570D variant (also known as c.1710G>T), located in coding exon 9 of the ALK gene, results from a G to T substitution at nucleotide position 1710. The glutamic acid at codon 570 is replaced by aspartic acid, an amino acid with highly similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.37
BayesDel_addAF	Benign	-0.018	T
BayesDel_noAF	Benign	-0.26
Cadd	Benign	20
Dann	Uncertain	1.0
DEOGEN2	Benign	0.10	T;.
Eigen	Benign	0.17
Eigen_PC	Benign	0.20
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Benign	0.72	T;T
M_CAP	Benign	0.026	D
MetaRNN	Uncertain	0.53	D;D
MetaSVM	Benign	-0.72	T
MutationAssessor	Benign	2.0	M;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.62	T
PROVEAN	Benign	-1.3	N;.
REVEL	Benign	0.16
Sift	Uncertain	0.0070	D;.
Sift4G	Uncertain	0.046	D;T
Polyphen		0.95	P;.
Vest4		0.60
MutPred		0.70		Loss of methylation at K572 (P = 0.0781);.;
MVP		0.72
MPC		0.67
ClinPred		0.91	D
GERP RS		4.3
Varity_R		0.34
gMVP		0.67

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: chr2-29519861;