2-29297036-G-T

Variant names:

• chr2-29297036-G-T
• NM_004304.5:c.1669C>A

Variant summary

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

The NM_004304.5(ALK):​c.1669C>A​(p.Arg557Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,862 control chromosomes in the GnomAD database, with no homozygous occurrence. 12/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R557C) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: ALK NM_004304.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.17

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 rank	MANE	Protein	UniProt
ALK	NM_004304.5	c.1669C>A	p.Arg557Ser	missense_variant	Exon 9 of 29	ENST00000389048.8	NP_004295.2
ALK	XR_001738688.3	n.2596C>A		non_coding_transcript_exon_variant	Exon 9 of 18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ALK	ENST00000389048.8	c.1669C>A	p.Arg557Ser	missense_variant	Exon 9 of 29	1	NM_004304.5	ENSP00000373700.3
ALK	ENST00000618119.4	c.538C>A	p.Arg180Ser	missense_variant	Exon 8 of 28	5		ENSP00000482733.1
ALK	ENST00000498037.1	n.224C>A		non_coding_transcript_exon_variant	Exon 3 of 5	4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461862 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727234

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.22
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.51
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.078	T;.
Eigen	Benign	-0.093
Eigen_PC	Benign	0.077
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.71	T;T
M_CAP	Benign	0.022	T
MetaRNN	Uncertain	0.66	D;D
MetaSVM	Benign	-0.72	T
MutationAssessor	Benign	2.0	M;.
PrimateAI	Benign	0.22	T
PROVEAN	Benign	-0.50	N;.
REVEL	Benign	0.10
Sift	Benign	0.33	T;.
Sift4G	Benign	0.40	T;T
Polyphen		0.21	B;.
Vest4		0.60
MutPred		0.70		Loss of MoRF binding (P = 0.0235);.;
MVP		0.46
MPC		0.31
ClinPred		0.88	D
GERP RS		4.3
Varity_R		0.24
gMVP		0.74

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.11		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: chr2-29519902;