rs747855434

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM1PP3PP5

The NM_002529.4(NTRK1):c.2119G>A(p.Glu707Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000112 in 1,613,406 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E707D) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 30)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

NTRK1
NM_002529.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:4

Conservation

PhyloP100: 9.74

Publications

4 publications found

Variant links:

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]

NTRK1 Gene-Disease associations (from GenCC):

hereditary sensory and autonomic neuropathy type 4
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, ClinGen, Labcorp Genetics (formerly Invitae)
familial medullary thyroid carcinoma
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

NTRK1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM1

In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 3 uncertain in NM_002529.4

PP3

MetaRNN computational evidence supports a deleterious effect, 0.819

PP5

Variant 1-156880071-G-A is Pathogenic according to our data. Variant chr1-156880071-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 526718.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NTRK1	NM_002529.4 link	c.2119G>A	p.Glu707Lys	missense_variant	Exon 16 of 17	ENST00000524377.7	NP_002520.2	P04629-1
NTRK1	NM_001012331.2 link	c.2101G>A	p.Glu701Lys	missense_variant	Exon 15 of 16		NP_001012331.1	P04629-2X5DR71
NTRK1	NM_001007792.1 link	c.2011G>A	p.Glu671Lys	missense_variant	Exon 16 of 17		NP_001007793.1	P04629-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NTRK1	ENST00000524377.7 link	c.2119G>A	p.Glu707Lys	missense_variant	Exon 16 of 17	1	NM_002529.4	ENSP00000431418.1		P04629-1

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151922

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000119

AC:

AN:

251100

AF XY:

0.0000147

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000116

AC:

AN:

1461484

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

727064

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.0000224

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.0000189

AC:

AN:

53024

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000108

AC:

AN:

1112004

Other (OTH)

AF:

0.0000331

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151922

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74192

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41324

American (AMR)

AF:

0.0000655

AC:

AN:

15268

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5170

South Asian (SAS)

AF:

0.00

AC:

AN:

4804

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10584

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67992

Other (OTH)

AF:

0.00

AC:

AN:

2082

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Hereditary insensitivity to pain with anhidrosis

Uncertain:3

Sep 16, 2020

Natera, Inc.

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Aug 31, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces glutamic acid with lysine at codon 701 of the NTRK1 protein (p.Glu701Lys). The glutamic acid residue is highly conserved and there is a small physicochemical difference between glutamic acid and lysine. This variant is present in population databases (rs747855434, ExAC 0.006%). This variant has not been reported in the literature in individuals affected with NTRK1-related conditions. 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. 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. -

May 18, 2021

Genome-Nilou Lab

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Premature ovarian failure

Pathogenic:1

Mar 02, 2020

Medical Cytogenetics and Molecular Genetics Laboratory, IRCCS Istituto Auxologico Italiano

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:research

- -

not specified

Uncertain:1

Mar 07, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: NTRK1 c.2101G>A (p.Glu701Lys) results in a conservative amino acid change located in the Protein kinase domain (IPR000719) of the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 1.2e-05 in 251100 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.2101G>A has been reported in the literature in one individual affected with primary ovarian insufficiency (Bestetti_2021). These report(s) do not provide unequivocal conclusions about association of the variant with Hereditary Insensitivity To Pain With Anhidrosis. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication have been ascertained in the context of this evaluation (PMID: 34480478). ClinVar contains an entry for this variant (Variation ID: 526718). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.54

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Pathogenic

0.14

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.81

.;.;D;D

Eigen

Uncertain

0.24

Eigen_PC

Uncertain

0.36

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

D;D;D;D

M_CAP

Uncertain

0.14

MetaRNN

Pathogenic

0.82

D;D;D;D

MetaSVM

Uncertain

0.24

MutationAssessor

Benign

-0.72

.;.;N;.

PhyloP100

9.7

PrimateAI

Pathogenic

0.83

PROVEAN

Uncertain

-3.3

D;D;D;D

REVEL

Pathogenic

0.74

Sift

Uncertain

0.0010

D;D;D;D

Sift4G

Uncertain

0.0030

D;D;D;D

Polyphen

0.34, 0.95

.;B;P;.

Vest4

0.81

MutPred

0.59

.;.;Gain of ubiquitination at E707 (P = 0.0369);.;

MVP

0.93

MPC

0.79

ClinPred

0.94

GERP RS

4.2

Varity_R

0.91

gMVP

0.84

Mutation Taster

=53/47

disease causing (ClinVar)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over