Ixazomib

Identification

Summary

Ixazomib is a proteasome inhibitor used with other medications to treat multiple myeloma in patients who have received one other therapy already.

Brand Names
Ninlaro
Generic Name
Ixazomib
DrugBank Accession Number
DB09570
Background

Ixazomib is a reversible proteasome inhibitor. Because it is a modified peptide boronic acid with one chiral center,4 it is considered a boronate proteasome inhibitor.1 More than 99% of the drug compound is the R-enantiomer.4

Ixazomib was approved by the FDA on November 20, 2015, making it the first oral proteasome inhibitor approved in the US.2 It was later approved by Health Canada on August 3, 2016,6 and by the EMA on November 21, 2016.7 It was also investigated in other hematological malignancies as well as other conditions, such as systemic light chain (AL) amyloidosis, graft-versus-host disease, and lupus nephritis.3

Type
Small Molecule
Groups
Approved, Investigational
Structure
Weight
Average: 361.03
Monoisotopic: 360.081492
Chemical Formula
C14H19BCl2N2O4
Synonyms
  • ((1R)-1-((2,5-DICHLOROBENZAMIDO)ACETAMIDO)-3-METHYLBUTYL)BORONIC ACID
  • 2-[(1R)-1-[[2-[(2,5-dichlorobenzoyl)amino]acetyl]amino]-3-methylbutyl]-5-oxo-1,3,2-dioxaborolane-4,4-diacetic acid
  • BORONIC ACID, B-((1R)-1-((2-((2,5-DICHLOROBENZOYL)AMINO)ACETYL)AMINO)-3-METHYLBUTYL)-
  • Ixazomib
External IDs
  • MLN 2238
  • MLN-2238
  • MLN2238

Pharmacology

Indication

Ixazomib is indicated in combination with lenalidomide and dexamethasone for the treatment of patients with multiple myeloma who have received at least one prior therapy.5,6,7

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Associated Conditions
Indication TypeIndicationCombined Product DetailsApproval LevelAge GroupPatient CharacteristicsDose Form
Used in combination to treatMultiple myelomaRegimen in combination with: Lenalidomide (DB00480), Dexamethasone (DB01234)••••••••••••••••••• ••••• ••• ••••• •••••••
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Pharmacodynamics

Ixazomib exerts antimyeloma effects with time-dependent reversible proteasome inhibition.1 Ixazomib induced apoptosis of multiple myeloma cell lines in vitro.2 Ixazomib demonstrated in vitro cytotoxicity against myeloma cells from patients who had relapsed after multiple prior therapies, including bortezomib, lenalidomide, and dexamethasone. The combination of ixazomib and lenalidomide demonstrated synergistic cytotoxic effects in multiple myeloma cell lines. In vivo, ixazomib demonstrated antitumour activity in a mouse multiple myeloma tumour xenograft model.5

Studies show that ixazomib exhibits an antiangiogenic activity and blocks osteoclastogenesis and osteoclast reabsorption.1

Mechanism of action

The ubiquitin-proteasome signalling pathway regulates cellular homeostasis and survival: It promotes protein degradation, activates the transcriptional factor nuclear factor (NF)-κB to upregulate the expression of growth and angiogenic factors, and blocks apoptosis. Made up of identical alpha (α)- and beta (β)-rings, the 20S proteasome catalytic core is part of the proteasome.1

Ixazomib is a selective, potent, and reversible inhibitor of the 20S proteasome. It preferentially binds to the β5 chymotrypsin-like proteolytic site with a half-maximal inhibitory concentration (IC50) value of 3.4 nmol/L.4,5 At higher concentrations, ixazomib may inhibit the caspase-like (β1) and trypsin-like (β2) proteolytic sites.1

TargetActionsOrganism
UProteasome subunit beta type-5
inhibitor
Humans
Absorption

Upon oral administration, ixazomib is rapidly absorbed 4 with a Tmax of one hour.5 Based on population pharmacokinetic (PK) analysis, the mean absolute oral bioavailability was 58%. Ixazomib area under the curve (AUC) increases in a dose-proportional manner over a dose range of 0.2 to 10.6 mg. A food effect study conducted in patients with a single 4 mg dose of ixazomib showed that a high-fat meal decreased ixazomib AUC by 28% and Cmax by 69%.5

Volume of distribution

The steady-state volume of distribution is 543 L.5

Protein binding

Ixazomib is 99% bound to plasma proteins and distributes into red blood cells with a blood-to-plasma ratio of 10.5

Metabolism

After the oral administration of a radiolabeled dose, ixazomib represented 70% of total drug-related material in plasma.5 Ixazomib undergoes both CYP- and non-CYP-mediated metabolism, which is reported to be the major drug clearance mechanism.4 The major biotransformation pathways include hydrolysis, deboronation, and N-dealkylation, with drug metabolites not expected to retain pharmacological activity.4

At clinically relevant ixazomib concentrations, in vitro studies using human cDNA-expressed cytochrome P450 isozymes showed that no specific CYP isozyme predominantly contributes to ixazomib metabolism. At higher than clinical concentrations, ixazomib was metabolized by multiple CYP isoforms with estimated relative contributions of 3A4 (42%), 1A2 (26%), 2B6 (16%), 2C8 (6%), 2D6 (5%), 2C19 (5%) and 2C9 (< 1%).5

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Route of elimination

After administration of a single oral dose of 14C-ixazomib to 5 patients with advanced cancer, 62% of the administered radioactivity was excreted in urine and 22% in the feces. Unchanged ixazomib accounted for < 3.5% of the administered dose recovered in urine.5

Following weekly oral dosing, the accumulation ratio was determined to be two-fold.5

Half-life

The terminal half-life (t1/2) of ixazomib was 9.5 days based on a population PK analysis.5

Clearance

Based on a population PK analysis, systemic clearance was approximately 1.9 L/hr with inter-individual variability of 44%.5

Adverse Effects
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Toxicity

Overdosage, including fatal overdosage, has been reported in patients taking ixazomib. Manifestations of overdosage include adverse reactions reported at the recommended dosage, including severe nausea, vomiting, diarrhea, aspiration pneumonia, multiple organ failure and death. There is no known specific antidote for ixazomib overdose and ixazomib is not dialyzable. In the event of an overdose, monitor the patient closely for adverse reactions and provide appropriate supportive care.5,6

Pathways
Not Available
Pharmacogenomic Effects/ADRs
Not Available

Interactions

Drug Interactions
This information should not be interpreted without the help of a healthcare provider. If you believe you are experiencing an interaction, contact a healthcare provider immediately. The absence of an interaction does not necessarily mean no interactions exist.
DrugInteraction
AbacavirAbacavir may decrease the excretion rate of Ixazomib which could result in a higher serum level.
AbametapirThe serum concentration of Ixazomib can be increased when it is combined with Abametapir.
AbataceptThe metabolism of Ixazomib can be increased when combined with Abatacept.
AcalabrutinibThe metabolism of Ixazomib can be decreased when combined with Acalabrutinib.
AceclofenacAceclofenac may decrease the excretion rate of Ixazomib which could result in a higher serum level.
Food Interactions
  • Avoid St. John's Wort. This herb induces CYP3A4 metabolism, which may reduce the serum concentration of ixazomib.
  • Take on an empty stomach. Food increases the absorption of ixazomib, take ixazomib dose at least one hour before and at least two hours after food.

Products

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Product Ingredients
IngredientUNIICASInChI Key
Ixazomib citrate46CWK97Z3K1239908-20-3MBOMYENWWXQSNW-AWEZNQCLSA-N
International/Other Brands
Ninlaro
Brand Name Prescription Products
NameDosageStrengthRouteLabellerMarketing StartMarketing EndRegionImage
NinlaroCapsule3 mg/1OralTakeda Pharmaceuticals America, Inc.2015-11-20Not applicableUS flag
NinlaroCapsule3 mg/1OralTakeda Pharmaceuticals America, Inc.2015-11-202023-10-31US flag
NinlaroCapsule2.3 mgOralTakeda Pharma A/S2021-02-10Not applicableEU flag
NinlaroCapsule2.3 mgOralTakeda2016-09-21Not applicableCanada flag
NinlaroCapsule4 mg/1OralTakeda Pharmaceuticals America, Inc.2015-11-20Not applicableUS flag

Categories

ATC Codes
L01XG03 — Ixazomib
Drug Categories
Chemical TaxonomyProvided by Classyfire
Description
This compound belongs to the class of organic compounds known as hippuric acids and derivatives. These are compounds containing a hippuric acid or a derivative, with a structure characterized the presence of a benzoyl group linked to the N-terminal of a glycine.
Kingdom
Organic compounds
Super Class
Benzenoids
Class
Benzene and substituted derivatives
Sub Class
Benzoic acids and derivatives
Direct Parent
Hippuric acids and derivatives
Alternative Parents
N-acyl-alpha amino acids and derivatives / Alpha amino acid amides / 2-halobenzoic acids and derivatives / 3-halobenzoic acids and derivatives / Benzoyl derivatives / Dichlorobenzenes / Aryl chlorides / Vinylogous halides / Secondary carboxylic acid amides / Boronic acids
show 8 more
Substituents
1,4-dichlorobenzene / 2-halobenzoic acid or derivatives / 3-halobenzoic acid or derivatives / Alkylborane / Alpha-amino acid amide / Alpha-amino acid or derivatives / Aromatic homomonocyclic compound / Aryl chloride / Aryl halide / Benzoyl
show 26 more
Molecular Framework
Aromatic homomonocyclic compounds
External Descriptors
Not Available
Affected organisms
  • Humans and other mammals

Chemical Identifiers

UNII
71050168A2
CAS number
1072833-77-2
InChI Key
MXAYKZJJDUDWDS-LBPRGKRZSA-N
InChI
InChI=1S/C14H19BCl2N2O4/c1-8(2)5-12(15(22)23)19-13(20)7-18-14(21)10-6-9(16)3-4-11(10)17/h3-4,6,8,12,22-23H,5,7H2,1-2H3,(H,18,21)(H,19,20)/t12-/m0/s1
IUPAC Name
[(1R)-1-{2-[(2,5-dichlorophenyl)formamido]acetamido}-3-methylbutyl]boronic acid
SMILES
CC(C)C[C@H](NC(=O)CNC(=O)C1=CC(Cl)=CC=C1Cl)B(O)O

References

General References
  1. Offidani M, Corvatta L, Caraffa P, Gentili S, Maracci L, Leoni P: An evidence-based review of ixazomib citrate and its potential in the treatment of newly diagnosed multiple myeloma. Onco Targets Ther. 2014 Sep 29;7:1793-800. doi: 10.2147/OTT.S49187. eCollection 2014. [Article]
  2. Raedler LA: Ninlaro (Ixazomib): First Oral Proteasome Inhibitor Approved for the Treatment of Patients with Relapsed or Refractory Multiple Myeloma. Am Health Drug Benefits. 2016 Mar;9(Spec Feature):102-5. [Article]
  3. Shirley M: Ixazomib: First Global Approval. Drugs. 2016 Mar;76(3):405-11. doi: 10.1007/s40265-016-0548-5. [Article]
  4. Gupta N, Hanley MJ, Xia C, Labotka R, Harvey RD, Venkatakrishnan K: Clinical Pharmacology of Ixazomib: The First Oral Proteasome Inhibitor. Clin Pharmacokinet. 2019 Apr;58(4):431-449. doi: 10.1007/s40262-018-0702-1. [Article]
  5. FDA Approved Drug Products: NINLARO (ixazomib) capsules, for oral use (July 2024) [Link]
  6. Health Canada Approved Drug Products: NINLARO (Ixazomib) Oral Capsules [Link]
  7. EMA Approved Drug Products: NINLARO (Ixazomib) Oral Capsules [Link]
KEGG Drug
D10130
PubChem Compound
25183872
PubChem Substance
310265228
ChemSpider
25027391
BindingDB
50398609
RxNav
1723735
ChEBI
90942
ChEMBL
CHEMBL2141296
ZINC
ZINC000169946773
PDBe Ligand
6V8
Drugs.com
Drugs.com Drug Page
Wikipedia
Ixazomib
PDB Entries
5lf7 / 7q11 / 8qyf

Clinical Trials

Clinical Trials
Clinical Trial & Rare Diseases Add-on Data Package
Explore 4,000+ rare diseases, orphan drugs & condition pairs, clinical trial why stopped data, & more. Preview package
PhaseStatusPurposeConditionsCountStart DateWhy Stopped100+ additional columns
Not AvailableCompletedNot AvailableRelapsed/Refractory Multiple Myeloma (RRMM)2somestatusstop reasonjust information to hide
Not AvailableRecruitingTreatmentMaintenances / Overall Survivals / Progression Free Survival1somestatusstop reasonjust information to hide
Not AvailableUnknown StatusNot AvailableRelapsed/Refractory Multiple Myeloma (RRMM)1somestatusstop reasonjust information to hide
4Active Not RecruitingTreatmentMultiple Myeloma (MM)1somestatusstop reasonjust information to hide
4CompletedTreatmentMultiple Myeloma (MM)1somestatusstop reasonjust information to hide

Pharmacoeconomics

Manufacturers
Not Available
Packagers
Not Available
Dosage Forms
FormRouteStrength
CapsuleOral2.3 mg/1
CapsuleOral3 mg/1
CapsuleOral3.0 MG
CapsuleOral4 mg/1
CapsuleOral4.0 MG
CapsuleOral2.3 mg
CapsuleOral3 mg
CapsuleOral4 mg
CapsuleOral3.29 Mg
CapsuleOral4.3 Mg
CapsuleOral5.7 Mg
Capsule, coatedOral2.3 mg
Capsule, coatedOral3 mg
Capsule, coatedOral4 mg
Prices
Not Available
Patents
Patent NumberPediatric ExtensionApprovedExpires (estimated)Region
US8871745No2014-10-282027-08-06US flag
US8530694No2013-09-102027-08-06US flag
US7442830No2008-10-282027-08-06US flag
US9175017No2015-11-032029-06-16US flag
US8003819No2011-08-232027-08-06US flag
US9233115No2016-01-122024-08-12US flag
US8546608No2013-10-012024-08-12US flag
US7687662No2010-03-302027-08-06US flag
US8859504No2014-10-142029-06-16US flag

Properties

State
Solid
Experimental Properties
Not Available
Predicted Properties
PropertyValueSource
Water Solubility0.0124 mg/mLALOGPS
logP2.06ALOGPS
logP2.57Chemaxon
logS-4.5ALOGPS
pKa (Strongest Acidic)8.64Chemaxon
pKa (Strongest Basic)-1.8Chemaxon
Physiological Charge0Chemaxon
Hydrogen Acceptor Count4Chemaxon
Hydrogen Donor Count4Chemaxon
Polar Surface Area98.66 Å2Chemaxon
Rotatable Bond Count7Chemaxon
Refractivity84.56 m3·mol-1Chemaxon
Polarizability36.3 Å3Chemaxon
Number of Rings1Chemaxon
Bioavailability1Chemaxon
Rule of FiveYesChemaxon
Ghose FilterYesChemaxon
Veber's RuleNoChemaxon
MDDR-like RuleNoChemaxon
Predicted ADMET Features
Not Available

Spectra

Mass Spec (NIST)
Not Available
Spectra
SpectrumSpectrum TypeSplash Key
Predicted GC-MS Spectrum - GC-MSPredicted GC-MSsplash10-006t-9513000000-a60e06b004f3a32d02e7
Predicted MS/MS Spectrum - 10V, Positive (Annotated)Predicted LC-MS/MSsplash10-03di-0109000000-37d2e0ec7a54c8fccf53
Predicted MS/MS Spectrum - 10V, Negative (Annotated)Predicted LC-MS/MSsplash10-00e9-6429000000-21742d07bf80b40c26f3
Predicted MS/MS Spectrum - 20V, Positive (Annotated)Predicted LC-MS/MSsplash10-01q9-9734000000-9792d466abb8acb641ad
Predicted MS/MS Spectrum - 20V, Negative (Annotated)Predicted LC-MS/MSsplash10-0007-9010000000-02090c242165d907f311
Predicted MS/MS Spectrum - 40V, Negative (Annotated)Predicted LC-MS/MSsplash10-0006-9000000000-6a5a429211929497b02d
Predicted MS/MS Spectrum - 40V, Positive (Annotated)Predicted LC-MS/MSsplash10-00di-8951000000-8a88f57be04795ba2209
Chromatographic Properties
Collision Cross Sections (CCS)
Not Available

Targets

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insights and accelerate drug research.
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Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
Component of the 20S core proteasome complex involved in the proteolytic degradation of most intracellular proteins. This complex plays numerous essential roles within the cell by associating with different regulatory particles. Associated with two 19S regulatory particles, forms the 26S proteasome and thus participates in the ATP-dependent degradation of ubiquitinated proteins. The 26S proteasome plays a key role in the maintenance of protein homeostasis by removing misfolded or damaged proteins that could impair cellular functions, and by removing proteins whose functions are no longer required. Associated with the PA200 or PA28, the 20S proteasome mediates ubiquitin-independent protein degradation. This type of proteolysis is required in several pathways including spermatogenesis (20S-PA200 complex) or generation of a subset of MHC class I-presented antigenic peptides (20S-PA28 complex). Within the 20S core complex, PSMB5 displays a chymotrypsin-like activity
Specific Function
Endopeptidase activity
Gene Name
PSMB5
Uniprot ID
P28074
Uniprot Name
Proteasome subunit beta type-5
Molecular Weight
28480.01 Da
References
  1. Gupta N, Hanley MJ, Xia C, Labotka R, Harvey RD, Venkatakrishnan K: Clinical Pharmacology of Ixazomib: The First Oral Proteasome Inhibitor. Clin Pharmacokinet. 2019 Apr;58(4):431-449. doi: 10.1007/s40262-018-0702-1. [Article]
  2. Raedler LA: Ninlaro (Ixazomib): First Oral Proteasome Inhibitor Approved for the Treatment of Patients with Relapsed or Refractory Multiple Myeloma. Am Health Drug Benefits. 2016 Mar;9(Spec Feature):102-5. [Article]
  3. FDA Approved Drug Products: NINLARO (ixazomib) capsules, for oral use (July 2024) [Link]

Enzymes

Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
General Function
A cytochrome P450 monooxygenase involved in the metabolism of sterols, steroid hormones, retinoids and fatty acids (PubMed:10681376, PubMed:11093772, PubMed:11555828, PubMed:12865317, PubMed:14559847, PubMed:15373842, PubMed:15764715, PubMed:19965576, PubMed:20702771, PubMed:21490593, PubMed:21576599). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase). Catalyzes the hydroxylation of carbon-hydrogen bonds (PubMed:12865317, PubMed:14559847, PubMed:15373842, PubMed:15764715, PubMed:21490593, PubMed:21576599, PubMed:2732228). Exhibits high catalytic activity for the formation of hydroxyestrogens from estrone (E1) and 17beta-estradiol (E2), namely 2-hydroxy E1 and E2, as well as D-ring hydroxylated E1 and E2 at the C-16 position (PubMed:11555828, PubMed:12865317, PubMed:14559847). Plays a role in the metabolism of androgens, particularly in oxidative deactivation of testosterone (PubMed:15373842, PubMed:15764715, PubMed:22773874, PubMed:2732228). Metabolizes testosterone to less biologically active 2beta- and 6beta-hydroxytestosterones (PubMed:15373842, PubMed:15764715, PubMed:2732228). Contributes to the formation of hydroxycholesterols (oxysterols), particularly A-ring hydroxylated cholesterol at the C-4beta position, and side chain hydroxylated cholesterol at the C-25 position, likely contributing to cholesterol degradation and bile acid biosynthesis (PubMed:21576599). Catalyzes bisallylic hydroxylation of polyunsaturated fatty acids (PUFA) (PubMed:9435160). Catalyzes the epoxidation of double bonds of PUFA with a preference for the last double bond (PubMed:19965576). Metabolizes endocannabinoid arachidonoylethanolamide (anandamide) to 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid ethanolamides (EpETrE-EAs), potentially modulating endocannabinoid system signaling (PubMed:20702771). Plays a role in the metabolism of retinoids. Displays high catalytic activity for oxidation of all-trans-retinol to all-trans-retinal, a rate-limiting step for the biosynthesis of all-trans-retinoic acid (atRA) (PubMed:10681376). Further metabolizes atRA toward 4-hydroxyretinoate and may play a role in hepatic atRA clearance (PubMed:11093772). Responsible for oxidative metabolism of xenobiotics. Acts as a 2-exo-monooxygenase for plant lipid 1,8-cineole (eucalyptol) (PubMed:11159812). Metabolizes the majority of the administered drugs. Catalyzes sulfoxidation of the anthelmintics albendazole and fenbendazole (PubMed:10759686). Hydroxylates antimalarial drug quinine (PubMed:8968357). Acts as a 1,4-cineole 2-exo-monooxygenase (PubMed:11695850). Also involved in vitamin D catabolism and calcium homeostasis. Catalyzes the inactivation of the active hormone calcitriol (1-alpha,25-dihydroxyvitamin D(3)) (PubMed:29461981)
Specific Function
1,8-cineole 2-exo-monooxygenase activity
Gene Name
CYP3A4
Uniprot ID
P08684
Uniprot Name
Cytochrome P450 3A4
Molecular Weight
57342.67 Da
References
  1. FDA Approved Drug Products: NINLARO (ixazomib) capsules, for oral use (July 2024) [Link]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
General Function
A cytochrome P450 monooxygenase involved in the metabolism of various endogenous substrates, including fatty acids, steroid hormones and vitamins (PubMed:10681376, PubMed:11555828, PubMed:12865317, PubMed:19965576, PubMed:9435160). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:10681376, PubMed:11555828, PubMed:12865317, PubMed:19965576, PubMed:9435160). Catalyzes the hydroxylation of carbon-hydrogen bonds (PubMed:11555828, PubMed:12865317). Exhibits high catalytic activity for the formation of hydroxyestrogens from estrone (E1) and 17beta-estradiol (E2), namely 2-hydroxy E1 and E2 (PubMed:11555828, PubMed:12865317). Metabolizes cholesterol toward 25-hydroxycholesterol, a physiological regulator of cellular cholesterol homeostasis (PubMed:21576599). May act as a major enzyme for all-trans retinoic acid biosynthesis in the liver. Catalyzes two successive oxidative transformation of all-trans retinol to all-trans retinal and then to the active form all-trans retinoic acid (PubMed:10681376). Primarily catalyzes stereoselective epoxidation of the last double bond of polyunsaturated fatty acids (PUFA), displaying a strong preference for the (R,S) stereoisomer (PubMed:19965576). Catalyzes bisallylic hydroxylation and omega-1 hydroxylation of PUFA (PubMed:9435160). May also participate in eicosanoids metabolism by converting hydroperoxide species into oxo metabolites (lipoxygenase-like reaction, NADPH-independent) (PubMed:21068195). Plays a role in the oxidative metabolism of xenobiotics. Catalyzes the N-hydroxylation of heterocyclic amines and the O-deethylation of phenacetin (PubMed:14725854). Metabolizes caffeine via N3-demethylation (Probable)
Specific Function
Aromatase activity
Gene Name
CYP1A2
Uniprot ID
P05177
Uniprot Name
Cytochrome P450 1A2
Molecular Weight
58406.915 Da
References
  1. Gupta N, Diderichsen PM, Hanley MJ, Berg D, van de Velde H, Harvey RD, Venkatakrishnan K: Population Pharmacokinetic Analysis of Ixazomib, an Oral Proteasome Inhibitor, Including Data from the Phase III TOURMALINE-MM1 Study to Inform Labelling. Clin Pharmacokinet. 2017 Nov;56(11):1355-1368. doi: 10.1007/s40262-017-0526-4. [Article]
  2. Kumar SK, Buadi FK, LaPlant B, Halvorson A, Leung N, Kapoor P, Dingli D, Gertz MA, Go RS, Bergsagel PL, Lin Y, Dispenzieri A, Hwa YL, Fonder A, Hobbs M, Fonseca R, Hayman SR, Stewart AK, Lust JA, Mikhael J, Gonsalves W, Reeder C, Skacel T, Rajkumar SV, Lacy MQ: Phase 1/2 trial of ixazomib, cyclophosphamide and dexamethasone in patients with previously untreated symptomatic multiple myeloma. Blood Cancer J. 2018 Jul 30;8(8):70. doi: 10.1038/s41408-018-0106-3. [Article]
  3. FDA Approved Drug Products: NINLARO (ixazomib) capsules, for oral use (July 2024) [Link]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
General Function
A cytochrome P450 monooxygenase involved in the metabolism of endocannabinoids and steroids (PubMed:12865317, PubMed:21289075). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase). Catalyzes the epoxidation of double bonds of arachidonoylethanolamide (anandamide) to 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid ethanolamides (EpETrE-EAs), potentially modulating endocannabinoid system signaling (PubMed:21289075). Hydroxylates steroid hormones, including testosterone at C-16 and estrogens at C-2 (PubMed:12865317, PubMed:21289075). Plays a role in the oxidative metabolism of xenobiotics, including plant lipids and drugs (PubMed:11695850, PubMed:22909231). Acts as a 1,4-cineole 2-exo-monooxygenase (PubMed:11695850)
Specific Function
Anandamide 11,12 epoxidase activity
Gene Name
CYP2B6
Uniprot ID
P20813
Uniprot Name
Cytochrome P450 2B6
Molecular Weight
56277.81 Da
References
  1. FDA Approved Drug Products: NINLARO (ixazomib) capsules, for oral use (July 2024) [Link]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
General Function
A cytochrome P450 monooxygenase involved in the metabolism of various endogenous substrates, including fatty acids, steroid hormones and vitamins (PubMed:11093772, PubMed:14559847, PubMed:15766564, PubMed:19965576, PubMed:7574697). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:11093772, PubMed:14559847, PubMed:15766564, PubMed:19965576, PubMed:7574697). Primarily catalyzes the epoxidation of double bonds of polyunsaturated fatty acids (PUFA) with a preference for the last double bond (PubMed:15766564, PubMed:19965576, PubMed:7574697). Catalyzes the hydroxylation of carbon-hydrogen bonds. Metabolizes all trans-retinoic acid toward its 4-hydroxylated form (PubMed:11093772). Displays 16-alpha hydroxylase activity toward estrogen steroid hormones, 17beta-estradiol (E2) and estrone (E1) (PubMed:14559847). Plays a role in the oxidative metabolism of xenobiotics. It is the principal enzyme responsible for the metabolism of the anti-cancer drug paclitaxel (taxol) (PubMed:26427316)
Specific Function
Arachidonic acid epoxygenase activity
Gene Name
CYP2C8
Uniprot ID
P10632
Uniprot Name
Cytochrome P450 2C8
Molecular Weight
55824.275 Da
References
  1. FDA Approved Drug Products: NINLARO (ixazomib) capsules, for oral use (July 2024) [Link]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
General Function
A cytochrome P450 monooxygenase involved in the metabolism of fatty acids, steroids and retinoids (PubMed:18698000, PubMed:19965576, PubMed:20972997, PubMed:21289075, PubMed:21576599). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:18698000, PubMed:19965576, PubMed:20972997, PubMed:21289075, PubMed:21576599). Catalyzes the epoxidation of double bonds of polyunsaturated fatty acids (PUFA) (PubMed:19965576, PubMed:20972997). Metabolizes endocannabinoid arachidonoylethanolamide (anandamide) to 20-hydroxyeicosatetraenoic acid ethanolamide (20-HETE-EA) and 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid ethanolamides (EpETrE-EAs), potentially modulating endocannabinoid system signaling (PubMed:18698000, PubMed:21289075). Catalyzes the hydroxylation of carbon-hydrogen bonds. Metabolizes cholesterol toward 25-hydroxycholesterol, a physiological regulator of cellular cholesterol homeostasis (PubMed:21576599). Catalyzes the oxidative transformations of all-trans retinol to all-trans retinal, a precursor for the active form all-trans-retinoic acid (PubMed:10681376). Also involved in the oxidative metabolism of drugs such as antiarrhythmics, adrenoceptor antagonists, and tricyclic antidepressants
Specific Function
Anandamide 11,12 epoxidase activity
Gene Name
CYP2D6
Uniprot ID
P10635
Uniprot Name
Cytochrome P450 2D6
Molecular Weight
55768.94 Da
References
  1. FDA Approved Drug Products: NINLARO (ixazomib) capsules, for oral use (July 2024) [Link]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
General Function
A cytochrome P450 monooxygenase involved in the metabolism of polyunsaturated fatty acids (PUFA) (PubMed:18577768, PubMed:19965576, PubMed:20972997). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:18577768, PubMed:19965576, PubMed:20972997). Catalyzes the hydroxylation of carbon-hydrogen bonds. Hydroxylates PUFA specifically at the omega-1 position (PubMed:18577768). Catalyzes the epoxidation of double bonds of PUFA (PubMed:19965576, PubMed:20972997). Also metabolizes plant monoterpenes such as limonene. Oxygenates (R)- and (S)-limonene to produce carveol and perillyl alcohol (PubMed:11950794). Responsible for the metabolism of a number of therapeutic agents such as the anticonvulsant drug S-mephenytoin, omeprazole, proguanil, certain barbiturates, diazepam, propranolol, citalopram and imipramine. Hydroxylates fenbendazole at the 4' position (PubMed:23959307)
Specific Function
(r)-limonene 6-monooxygenase activity
Gene Name
CYP2C19
Uniprot ID
P33261
Uniprot Name
Cytochrome P450 2C19
Molecular Weight
55944.565 Da
References
  1. FDA Approved Drug Products: NINLARO (ixazomib) capsules, for oral use (July 2024) [Link]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
General Function
A cytochrome P450 monooxygenase involved in the metabolism of various endogenous substrates, including fatty acids and steroids (PubMed:12865317, PubMed:15766564, PubMed:19965576, PubMed:21576599, PubMed:7574697, PubMed:9435160, PubMed:9866708). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:12865317, PubMed:15766564, PubMed:19965576, PubMed:21576599, PubMed:7574697, PubMed:9435160, PubMed:9866708). Catalyzes the epoxidation of double bonds of polyunsaturated fatty acids (PUFA) (PubMed:15766564, PubMed:19965576, PubMed:7574697, PubMed:9866708). Catalyzes the hydroxylation of carbon-hydrogen bonds. Metabolizes cholesterol toward 25-hydroxycholesterol, a physiological regulator of cellular cholesterol homeostasis (PubMed:21576599). Exhibits low catalytic activity for the formation of catechol estrogens from 17beta-estradiol (E2) and estrone (E1), namely 2-hydroxy E1 and E2 (PubMed:12865317). Catalyzes bisallylic hydroxylation and hydroxylation with double-bond migration of polyunsaturated fatty acids (PUFA) (PubMed:9435160, PubMed:9866708). Also metabolizes plant monoterpenes such as limonene. Oxygenates (R)- and (S)-limonene to produce carveol and perillyl alcohol (PubMed:11950794). Contributes to the wide pharmacokinetics variability of the metabolism of drugs such as S-warfarin, diclofenac, phenytoin, tolbutamide and losartan (PubMed:25994031)
Specific Function
(r)-limonene 6-monooxygenase activity
Gene Name
CYP2C9
Uniprot ID
P11712
Uniprot Name
Cytochrome P450 2C9
Molecular Weight
55627.365 Da
References
  1. FDA Approved Drug Products: NINLARO (ixazomib) capsules, for oral use (July 2024) [Link]

Transporters

Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
Curator comments
Ixazomib is a low affinity substrate of P-glycoprotein.
General Function
Translocates drugs and phospholipids across the membrane (PubMed:2897240, PubMed:35970996, PubMed:8898203, PubMed:9038218). Catalyzes the flop of phospholipids from the cytoplasmic to the exoplasmic leaflet of the apical membrane. Participates mainly to the flop of phosphatidylcholine, phosphatidylethanolamine, beta-D-glucosylceramides and sphingomyelins (PubMed:8898203). Energy-dependent efflux pump responsible for decreased drug accumulation in multidrug-resistant cells (PubMed:2897240, PubMed:35970996, PubMed:9038218)
Specific Function
Abc-type xenobiotic transporter activity
Gene Name
ABCB1
Uniprot ID
P08183
Uniprot Name
ATP-dependent translocase ABCB1
Molecular Weight
141477.255 Da
References
  1. Gupta N, Hanley MJ, Xia C, Labotka R, Harvey RD, Venkatakrishnan K: Clinical Pharmacology of Ixazomib: The First Oral Proteasome Inhibitor. Clin Pharmacokinet. 2019 Apr;58(4):431-449. doi: 10.1007/s40262-018-0702-1. [Article]
  2. FDA Approved Drug Products: NINLARO (ixazomib) capsules, for oral use (July 2024) [Link]

Drug created at November 30, 2015 19:10 / Updated at September 16, 2024 01:24