chr15-98913177-A-G

Variant names:

• chr15-98913177-A-G
• rs45524940
• NM_000875.5:c.1723A>G

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_000875.5(IGF1R):​c.1723A>G​(p.Thr575Ala) 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. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: IGF1R NM_000875.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.31
• Publications: 2 publications found

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]

IGF1R Gene-Disease associations (from GenCC):

• growth delay due to insulin-like growth factor I resistance

  Inheritance: AR, AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.919

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IGF1R	NM_000875.5	c.1723A>G	p.Thr575Ala	missense_variant	Exon 8 of 21	ENST00000650285.1	NP_000866.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IGF1R	ENST00000650285.1	c.1723A>G	p.Thr575Ala	missense_variant	Exon 8 of 21		NM_000875.5	ENSP00000497069.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Aug 18, 2017

Eurofins Ntd Llc (ga)

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.81
BayesDel_addAF	Pathogenic	0.41	D
BayesDel_noAF	Pathogenic	0.36
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.90	D;.;D;.
Eigen	Pathogenic	0.80
Eigen_PC	Pathogenic	0.74
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.98	.;.;D;D
M_CAP	Pathogenic	0.52	D
MetaRNN	Pathogenic	0.92	D;D;D;D
MetaSVM	Uncertain	0.45	D
MutationAssessor	Pathogenic	3.0	M;.;M;.
PhyloP100		9.3
PrimateAI	Uncertain	0.67	T
PROVEAN	Uncertain	-4.3	.;.;D;D
REVEL	Pathogenic	0.92
Sift	Uncertain	0.0020	.;.;D;D
Sift4G	Uncertain	0.028	.;.;D;D
Polyphen		1.0	D;D;D;D
Vest4		0.97, 0.94
MutPred		0.75		Gain of catalytic residue at T575 (P = 0.1383);Gain of catalytic residue at T575 (P = 0.1383);Gain of catalytic residue at T575 (P = 0.1383);Gain of catalytic residue at T575 (P = 0.1383);
MVP		0.96
MPC		1.3
ClinPred		1.0	D
GERP RS		4.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.63
gMVP		0.91

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: rs45524940; hg19: chr15-99456406;