1-156876487-C-A

Position:

• chr1-156876487-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1 PM2

The NM_002529.4(NTRK1):​c.1720C>A​(p.Arg574Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,500 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: NTRK1 NM_002529.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:2
• Conservation: PhyloP100: 0.356

Genes affected

NTRK1 (HGNC:8031): (neurotrophic receptor tyrosine kinase 1) This gene encodes a member of the neurotrophic tyrosine kinase receptor (NTKR) family. This kinase is a membrane-bound receptor that, upon neurotrophin binding, phosphorylates itself and members of the MAPK pathway. The presence of this kinase leads to cell differentiation and may play a role in specifying sensory neuron subtypes. Mutations in this gene have been associated with congenital insensitivity to pain, anhidrosis, self-mutilating behavior, cognitive disability and cancer. Alternate transcriptional splice variants of this gene have been found, but only three have been characterized to date. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM1: In a domain Protein kinase (size 271) in uniprot entity NTRK1_HUMAN there are 42 pathogenic changes around while only 5 benign (89%) in NM_002529.4
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NTRK1	NM_002529.4	c.1720C>A	p.Arg574Ser	missense_variant	14/17	ENST00000524377.7	NP_002520.2
NTRK1	NM_001012331.2	c.1702C>A	p.Arg568Ser	missense_variant	13/16		NP_001012331.1
NTRK1	NM_001007792.1	c.1612C>A	p.Arg538Ser	missense_variant	14/17		NP_001007793.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NTRK1	ENST00000524377.7	c.1720C>A	p.Arg574Ser	missense_variant	14/17	1	NM_002529.4	ENSP00000431418	P4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000399 AC: 1 AN: 250766 Hom.: 0 AF XY: 0.00000737 AC XY: 1 AN XY: 135766

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461500 Hom.: 0 Cov.: 34 AF XY: 0.00000138 AC XY: 1 AN XY: 727074

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000224

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

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary insensitivity to pain with anhidrosis Uncertain:2

Uncertain significance, no assertion criteria provided	clinical testing	Natera, Inc.	Feb 18, 2020	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 05, 2022	This sequence change replaces arginine, which is basic and polar, with serine, which is neutral and polar, at codon 568 of the NTRK1 protein (p.Arg568Ser). This variant is present in population databases (no rsID available, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with NTRK1-related conditions. ClinVar contains an entry for this variant (Variation ID: 1037825). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt NTRK1 protein function. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.33
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Pathogenic	0.19
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.80	.;.;D;D
Eigen	Uncertain	0.19
Eigen_PC	Uncertain	0.24
FATHMM_MKL	Benign	0.49	N
LIST_S2	Uncertain	0.94	D;D;D;D
M_CAP	Benign	0.073	D
MetaRNN	Uncertain	0.54	D;D;D;D
MetaSVM	Uncertain	0.33	D
MutationAssessor	Benign	1.1	.;.;L;.
MutationTaster	Benign	0.99	D;D;D;D
PrimateAI	Uncertain	0.60	T
PROVEAN	Uncertain	-2.6	D;D;D;D
REVEL	Uncertain	0.62
Sift	Uncertain	0.0090	D;D;D;D
Sift4G	Benign	0.083	T;D;D;D
Polyphen		0.74, 0.99	.;P;D;.
Vest4		0.51
MutPred		0.79		.;.;Gain of catalytic residue at Q570 (P = 0.2466);.;
MVP		0.96
MPC		0.93
ClinPred		0.93	D
GERP RS		5.3
Varity_R		0.76
gMVP		0.73

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.32		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.32		Position offset: -4

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs368806213; hg19: chr1-156846279;