rs55770488
Variant summary
Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BS1BS2
The NM_000875.5(IGF1R):c.225C>T(p.Phe75=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00371 in 1,614,178 control chromosomes in the GnomAD database, including 17 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).
Frequency
Genomes: 𝑓 0.0030 ( 4 hom., cov: 32)
Exomes 𝑓: 0.0038 ( 13 hom. )
Consequence
IGF1R
NM_000875.5 synonymous
NM_000875.5 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: 0.733
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 Benign. Variant got -19 ACMG points.
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.45).
BP6
?
Variant 15-98707692-C-T is Benign according to our data. Variant chr15-98707692-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 281171.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr15-98707692-C-T is described in Lovd as [Benign].
BP7
?
Synonymous conserved (PhyloP=0.733 with no splicing effect.
BS1
?
Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00298 (454/152286) while in subpopulation NFE AF= 0.00494 (336/68020). AF 95% confidence interval is 0.0045. There are 4 homozygotes in gnomad4. There are 213 alleles in male gnomad4 subpopulation. This position pass quality control queck.
BS2
?
High Homozygotes in GnomAd at 4 AD,AR gene
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
IGF1R | NM_000875.5 | c.225C>T | p.Phe75= | synonymous_variant | 2/21 | ENST00000650285.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
IGF1R | ENST00000650285.1 | c.225C>T | p.Phe75= | synonymous_variant | 2/21 | NM_000875.5 | P4 | ||
IGF1R | ENST00000559925.5 | n.225C>T | non_coding_transcript_exon_variant | 2/10 | 1 | ||||
IGF1R | ENST00000649865.1 | c.225C>T | p.Phe75= | synonymous_variant | 2/21 | A1 |
Frequencies
GnomAD3 genomes ? AF: 0.00298 AC: 454AN: 152170Hom.: 4 Cov.: 32
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GnomAD3 exomes AF: 0.00278 AC: 699AN: 251452Hom.: 1 AF XY: 0.00279 AC XY: 379AN XY: 135902
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GnomAD4 exome AF: 0.00378 AC: 5532AN: 1461892Hom.: 13 Cov.: 33 AF XY: 0.00375 AC XY: 2728AN XY: 727246
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GnomAD4 genome ? AF: 0.00298 AC: 454AN: 152286Hom.: 4 Cov.: 32 AF XY: 0.00286 AC XY: 213AN XY: 74458
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ClinVar
Significance: Benign/Likely benign
Submissions summary: Benign:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Growth delay due to insulin-like growth factor I resistance Benign:2
Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. - |
Benign, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Mar 11, 2022 | - - |
not provided Benign:2
Benign, criteria provided, single submitter | clinical testing | Invitae | Jan 24, 2024 | - - |
Likely benign, criteria provided, single submitter | clinical testing | CeGaT Center for Human Genetics Tuebingen | Apr 01, 2024 | IGF1R: BP4, BP7, BS2 - |
not specified Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Eurofins Ntd Llc (ga) | Oct 13, 2015 | - - |
Computational scores
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BayesDel_noAF
Benign
Cadd
Benign
Dann
Benign
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at