15-98916091-T-C

Variant names:

• chr15-98916091-T-C
• rs45598332
• NM_000875.5:c.1956T>C

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_000875.5(IGF1R):​c.1956T>C​(p.Pro652Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. P652P) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: IGF1R NM_000875.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.51
• 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, Orphanet, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BP7: Synonymous conserved (PhyloP=-2.51 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000875.5. 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
	IGF1R	NM_000875.5	MANE Select	c.1956T>C	p.Pro652Pro	synonymous	Exon 9 of 21	NP_000866.1	P08069
	IGF1R	NM_001291858.2		c.1956T>C	p.Pro652Pro	synonymous	Exon 9 of 21	NP_001278787.1	C9J5X1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	IGF1R	ENST00000650285.1	MANE Select	c.1956T>C	p.Pro652Pro	synonymous	Exon 9 of 21	ENSP00000497069.1	P08069
	IGF1R	ENST00000559925.5	TSL:1	n.1956T>C		non_coding_transcript_exon	Exon 9 of 10
	IGF1R	ENST00000649865.1		c.1956T>C	p.Pro652Pro	synonymous	Exon 9 of 21	ENSP00000496919.1	C9J5X1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	0.33
DANN	Benign	0.72
PhyloP100		-2.5

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: rs45598332; hg19: chr15-99459320;