Gene Variant Detail

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Gene IDH1
Variant R132L
Impact List missense
Protein Effect gain of function
Gene Variant Descriptions IDH1 R132L lies within the active site of the Idh1 protein (PMID: 19228619). R132L confers a gain of function to Idh1, as indicated by increased conversion of alpha-ketoglutarate to the onco-metabolite 2HG (R(-)-2-hydroxyglutarate) in cell culture (PMID: 19935646, PMID: 21326614).
Associated Drug Resistance

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Transcript NM_005896
gDNA chr2:g.208248388C>A
cDNA c.395G>T
Protein p.R132L
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_001282386 chr2:g.208248388C>A c.395G>T p.R132L RefSeq GRCh38/hg38
NM_001282387 chr2:g.208248388C>A c.395G>T p.R132L RefSeq GRCh38/hg38
NM_005896 chr2:g.208248388C>A c.395G>T p.R132L RefSeq GRCh38/hg38

Filtering

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  • Simple literal full or partial string matches
  • Separate multiple filter terms with a spaces, order doesn't matter (a b c and c b a are equivalent )
  • Filtering will only apply to rows that are already loaded on the page, filtering has no impact on query parameters
  • Use quotes to match a longer phrase which contains spaces "mtor c1483f"

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Molecular Profile Protein Effect Treatment Approaches
IDH1 R132L gain of function IDH Inhibitor (Pan) IDH1 Inhibitor
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
IDH1 R132L acute myeloid leukemia sensitive Ivosidenib FDA approved - On Companion Diagnostic Actionable In a Phase I trial that supported FDA approval, Tibsovo (ivosidenib) treatment resulted in complete remission (CR) in 21.6% (27/125), CR with partial hematological recovery (CRh) in 8.8% (11/125), and overall response (OR) in 41.6% (52/125) of patients with relapsed or refractory acute myeloid leukemia harboring a susceptible IDH1 mutation (R132C/G/H/L/S) as detected by an FDA-approved test (PMID: 29860938; NCT02074839). 29860938 detail... detail...
IDH1 R132L acute myeloid leukemia sensitive Ivosidenib FDA approved - On Companion Diagnostic Actionable In a Phase I trial that supported FDA approval, Tibsovo (ivosidenib) treatment resulted in complete remission (CR) in 28.6% (8/28), CR with partial hematological recovery (CRh) in 14.3% (4/28) of patients age 75 or older with untreated acute myeloid leukemia harboring a susceptible IDH1 mutation (R132C/G/H/L/S) as detected by an FDA-approved test, with a median treatment duration of 4.3 months (PMID: 29860938; NCT02074839). 29860938 detail... detail...
IDH1 R132L acute myeloid leukemia sensitive BAY1436032 Preclinical - Patient cell culture Actionable In a preclinical study, BAY1436032 decreased (R)-2-hydroxyglutarate (R-2HG) levels, and inhibited growth and increased differentiation of patient-derived acute myeloid leukemia cells harboring IDH1 R132L in culture (PMID: 28232670). 28232670