15-98707880-G-T

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM2PM5PP2PP3_Strong

The NM_000875.5(IGF1R):​c.413G>T​(p.Arg138Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging 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. R138Q) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.8e-7 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

IGF1R
NM_000875.5 missense

Scores

13
5
1

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 9.86
Variant links:
Genes affected
IGF1R (HGNC:5465): (insulin like growth factor 1 receptor) This receptor binds insulin-like growth factor with a high affinity. It has tyrosine kinase activity. The insulin-like growth factor I receptor plays a critical role in transformation events. Cleavage of the precursor generates alpha and beta subunits. It is highly overexpressed in most malignant tissues where it functions as an anti-apoptotic agent by enhancing cell survival. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, May 2014]

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr15-98707880-G-A is described in Lovd as [Likely_pathogenic].
PP2
Missense variant in gene, where missense usually causes diseases (based on misZ statistic), IGF1R. . Trascript score misZ 4.6449 (greater than threshold 3.09). GenCC has associacion of gene with growth delay due to insulin-like growth factor I resistance.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.946

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
IGF1RNM_000875.5 linkuse as main transcriptc.413G>T p.Arg138Leu missense_variant 2/21 ENST00000650285.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
IGF1RENST00000650285.1 linkuse as main transcriptc.413G>T p.Arg138Leu missense_variant 2/21 NM_000875.5 P4
IGF1RENST00000559925.5 linkuse as main transcriptn.413G>T non_coding_transcript_exon_variant 2/101
IGF1RENST00000649865.1 linkuse as main transcriptc.413G>T p.Arg138Leu missense_variant 2/21 A1
IGF1RENST00000558355.1 linkuse as main transcriptc.50G>T p.Arg17Leu missense_variant 1/22

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000398
AC:
1
AN:
251468
Hom.:
0
AF XY:
0.00000736
AC XY:
1
AN XY:
135912
show subpopulations
Gnomad AFR exome
AF:
0.0000615
Gnomad AMR exome
AF:
0.00
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
Data not reliable, filtered out with message: AS_VQSR
AF:
6.84e-7
AC:
1
AN:
1461824
Hom.:
0
Cov.:
33
AF XY:
0.00000138
AC XY:
1
AN XY:
727220
show subpopulations
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.:
32
ExAC
AF:
0.00000824
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.97
BayesDel_addAF
Pathogenic
0.32
D
BayesDel_noAF
Pathogenic
0.40
CADD
Pathogenic
26
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.88
D;.;D;.;D
Eigen
Pathogenic
0.86
Eigen_PC
Pathogenic
0.79
FATHMM_MKL
Uncertain
0.96
D
LIST_S2
Pathogenic
1.0
.;.;D;D;D
M_CAP
Pathogenic
0.34
D
MetaRNN
Pathogenic
0.95
D;D;D;D;D
MetaSVM
Uncertain
0.63
D
MutationAssessor
Pathogenic
3.7
H;.;H;.;.
MutationTaster
Benign
1.0
D;D
PrimateAI
Pathogenic
0.90
D
PROVEAN
Pathogenic
-5.7
.;.;D;D;D
REVEL
Pathogenic
0.85
Sift
Uncertain
0.0010
.;.;D;D;D
Sift4G
Uncertain
0.0020
.;.;D;D;D
Polyphen
1.0
D;D;D;D;.
Vest4
0.96, 0.96
MutPred
0.81
Loss of MoRF binding (P = 0.0156);Loss of MoRF binding (P = 0.0156);Loss of MoRF binding (P = 0.0156);Loss of MoRF binding (P = 0.0156);.;
MVP
0.93
MPC
1.8
ClinPred
0.99
D
GERP RS
4.4
Varity_R
0.91
gMVP
0.86

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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs121912426; hg19: chr15-99251109; API