1-156881634-C-A

Variant names:

• chr1-156881634-C-A
• rs749041981
• NM_002529.4:c.2383C>A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_002529.4(NTRK1):​c.2383C>A​(p.Leu795Met) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 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. L795V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: NTRK1 NM_002529.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.16
• Publications: 0 publications found

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002529.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NTRK1	NM_002529.4	MANE Select	c.2383C>A	p.Leu795Met	missense	Exon 17 of 17	NP_002520.2
	NTRK1	NM_001012331.2		c.2365C>A	p.Leu789Met	missense	Exon 16 of 16	NP_001012331.1
	NTRK1	NM_001007792.1		c.2275C>A	p.Leu759Met	missense	Exon 17 of 17	NP_001007793.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NTRK1	ENST00000524377.7	TSL:1 MANE Select	c.2383C>A	p.Leu795Met	missense	Exon 17 of 17	ENSP00000431418.1
	NTRK1	ENST00000368196.7	TSL:1	c.2365C>A	p.Leu789Met	missense	Exon 16 of 16	ENSP00000357179.3
	NTRK1	ENST00000358660.3	TSL:2	c.2374C>A	p.Leu792Met	missense	Exon 16 of 16	ENSP00000351486.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1453712 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 722450

African (AFR) AF: 0.00 AC: 0 AN: 33324

American (AMR) AF: 0.00 AC: 0 AN: 43738

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25884

East Asian (EAS) AF: 0.00 AC: 0 AN: 39404

South Asian (SAS) AF: 0.00 AC: 0 AN: 84804

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52174

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5460

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1108972

Other (OTH) AF: 0.00 AC: 0 AN: 59952

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.24
BayesDel_addAF	Uncertain	0.084	D
BayesDel_noAF	Benign	-0.12
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.47	T
Eigen	Pathogenic	0.71
Eigen_PC	Pathogenic	0.67
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.73	T
M_CAP	Benign	0.060	D
MetaRNN	Uncertain	0.50	T
MetaSVM	Uncertain	0.34	D
MutationAssessor	Uncertain	2.2	M
PhyloP100		4.2
PrimateAI	Pathogenic	0.82	D
PROVEAN	Benign	-1.5	N
REVEL	Uncertain	0.43
Sift	Uncertain	0.0030	D
Sift4G	Uncertain	0.0060	D
Polyphen		1.0	D
Vest4		0.54
MutPred		0.28		Gain of loop (P = 0.1069)
MVP		0.93
MPC		0.87
ClinPred		0.97	D
GERP RS		5.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.57
gMVP		0.40
Mutation Taster		=24/76	disease causing

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

Other links and lift over

dbSNP: rs749041981; hg19: chr1-156851426;