chr1-156840887-C-A

Position:

• chr1-156840887-C-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_014215.3(INSRR):​c.3880G>T​(p.Gly1294Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000108 in 1,613,248 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.00013 (0 hom., cov: 31)
  • Exomes 𝑓: 0.00011 (0 hom.)
• Consequence: INSRR NM_014215.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.0120

Genes affected

INSRR (HGNC:6093): (insulin receptor related receptor) Enables transmembrane receptor protein tyrosine kinase activity. Involved in actin cytoskeleton reorganization; cellular response to alkaline pH; and protein autophosphorylation. Part of receptor complex. [provided by Alliance of Genome Resources, Apr 2022]

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 Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.061247975).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
INSRR	NM_014215.3	c.3880G>T	p.Gly1294Cys	missense_variant	22/22	ENST00000368195.4
NTRK1	NM_001007792.1	c.10-1194C>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
INSRR	ENST00000368195.4	c.3880G>T	p.Gly1294Cys	missense_variant	22/22	1	NM_014215.3	P1

Frequencies

GnomAD3 genomes AF: 0.000131 AC: 20 AN: 152188 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000482

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000393

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.000132

Gnomad OTH AF: 0.000955

GnomAD3 exomes AF: 0.0000882 AC: 22 AN: 249398 Hom.: 0 AF XY: 0.0000592 AC XY: 8 AN XY: 135038

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000406

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.0000472

Gnomad NFE exome AF: 0.0000532

Gnomad OTH exome AF: 0.000165

GnomAD4 exome AF: 0.000105 AC: 154 AN: 1460942 Hom.: 0 Cov.: 31 AF XY: 0.0000881 AC XY: 64 AN XY: 726780

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.000448

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.0000187

Gnomad4 NFE exome AF: 0.000105

Gnomad4 OTH exome AF: 0.000182

GnomAD4 genome AF: 0.000131 AC: 20 AN: 152306 Hom.: 0 Cov.: 31 AF XY: 0.000107 AC XY: 8 AN XY: 74476

Gnomad4 AFR AF: 0.0000481

Gnomad4 AMR AF: 0.000392

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000132

Gnomad4 OTH AF: 0.000945

Alfa AF: 0.000116 Hom.: 0

Bravo AF: 0.000128

ExAC AF: 0.0000330 AC: 4

EpiCase AF: 0.000164

EpiControl AF: 0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 12, 2022

The c.3880G>T (p.G1294C) alteration is located in exon 22 (coding exon 22) of the INSRR gene. This alteration results from a G to T substitution at nucleotide position 3880, causing the glycine (G) at amino acid position 1294 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.095
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	20
DANN	Uncertain	0.99
DEOGEN2	Benign	0.24	T
Eigen	Benign	-0.16
Eigen_PC	Benign	-0.17
FATHMM_MKL	Benign	0.24	N
LIST_S2	Benign	0.66	T
M_CAP	Uncertain	0.10	D
MetaRNN	Benign	0.061	T
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	0.34	N
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.36	T
PROVEAN	Benign	-0.69	N
REVEL	Benign	0.15
Sift	Uncertain	0.0030	D
Sift4G	Uncertain	0.0070	D
Polyphen		0.73	P
Vest4		0.26
MVP		0.85
MPC		0.19
ClinPred		0.089	T
GERP RS		2.3
Varity_R		0.15
gMVP		0.46

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

LitVar

Other links and lift over

dbSNP: rs536346142; hg19: chr1-156810679;