| Carcinoma breast stage IV
Ixempra vs Arimidex
Side-by-side clinical, coverage, and cost comparison for carcinoma breast stage iv.Deep comparison between: Ixempra vs Arimidex with Prescriber.AI
AI compares prescribing info and payer-specific access barriers across 1,200+ formularies. Here's a preview of what prescribers are already asking.Safety signalsArimidex has a higher rate of injection site reactions vs Ixempra based on FDA-approved prescribing information
Coverage gaps3 major payers require step therapy for Arimidex but not Ixempra, including UnitedHealthcare
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Category
Ixempra
Arimidex
At A Glance
IV infusion
Every 3 weeks
Microtubule inhibitor (epothilone analog)
Oral
Daily
Aromatase inhibitor
Indications
- Carcinoma breast stage IV
- Locally advanced breast cancer
- Malignant neoplasm of breast
- Locally advanced breast cancer
- Carcinoma breast stage IV
Dosing
Carcinoma breast stage IV, Locally advanced breast cancer (with capecitabine) 40 mg/m2 IV over 3 hours every 3 weeks; capecitabine 1000 mg/m2 twice daily for 2 weeks per cycle.
Carcinoma breast stage IV, Locally advanced breast cancer (single agent) 40 mg/m2 IV over 3 hours every 3 weeks.
Malignant neoplasm of breast 1 mg tablet orally once daily; adjuvant treatment duration in the ATAC trial was 5 years.
Locally advanced breast cancer, Carcinoma breast stage IV 1 mg tablet orally once daily; continue until tumor progression.
Contraindications
- Neutrophil count <1500 cells/mm3 or platelet count <100,000 cells/mm3
- History of severe hypersensitivity to agents containing Cremophor EL or its derivatives (e.g., polyoxyethylated castor oil)
- Combination with capecitabine in patients with AST or ALT >2.5 x ULN or bilirubin >1 x ULN
- Hypersensitivity to anastrozole or any excipient (including anaphylaxis, angioedema, and urticaria)
Adverse Reactions
Most common (>=20%) Peripheral sensory neuropathy, fatigue/asthenia, myalgia/arthralgia, alopecia, nausea, vomiting, stomatitis/mucositis, diarrhea, musculoskeletal pain; in combination therapy also: palmar-plantar erythrodysesthesia, anorexia, abdominal pain, nail disorder, constipation.
Most common hematologic (>40%) Neutropenia, leukopenia, anemia, thrombocytopenia.
Serious Peripheral neuropathy, myelosuppression, hypersensitivity reactions, cardiac adverse reactions (myocardial infarction, arrhythmia, left ventricular dysfunction), sepsis, pneumonia, respiratory failure, acute hepatic failure.
Postmarketing Radiation recall.
Most common (>=10%) Hot flashes, asthenia, arthritis, pain, arthralgia, hypertension, depression, nausea and vomiting, rash, osteoporosis, fractures, back pain, insomnia, headache, bone pain, peripheral edema, increased cough, dyspnea, pharyngitis, lymphedema
Serious Skin lesions, ulcers, or blisters; severe allergic reactions with swelling of face, lips, tongue, and/or throat; liver function abnormalities including hepatitis
Postmarketing Hepatobiliary events (increases in alkaline phosphatase, ALT, AST, gamma-GT, and bilirubin; hepatitis), erythema multiforme, Stevens-Johnson syndrome, angioedema, urticaria, anaphylaxis, myalgia, hypercalcemia, tendon disorders including tendon rupture and tendonitis
Pharmacology
Ixabepilone is a semi-synthetic analog of epothilone B that binds directly to beta-tubulin subunits on microtubules, suppressing microtubule dynamic instability and blocking cells in the mitotic phase of the cell division cycle, leading to cell death.
Anastrozole is a selective non-steroidal aromatase inhibitor that suppresses estrogen biosynthesis by blocking the aromatase enzyme, significantly lowering serum estradiol concentrations in postmenopausal women without affecting adrenal corticosteroid or aldosterone formation.
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Most Common Insurance
Anthem BCBS
Ixempra
- Covered on 5 commercial plans
- PA (9/12) · Step Therapy (0/12) · Qty limit (0/12)
Arimidex
- Covered on 5 commercial plans
- PA (0/12) · Step Therapy (0/12) · Qty limit (0/12)
UnitedHealthcare
Ixempra
- Covered on 4 commercial plans
- PA (0/8) · Step Therapy (0/8) · Qty limit (0/8)
Arimidex
- Covered on 4 commercial plans
- PA (4/8) · Step Therapy (0/8) · Qty limit (0/8)
Humana
Ixempra
- Covered on 0 commercial plans
- PA (3/3) · Step Therapy (0/3) · Qty limit (0/3)
Arimidex
- Covered on 0 commercial plans
- PA (0/3) · Step Therapy (0/3) · Qty limit (2/3)
Coverage data sourced from MMIT. Updated monthly.
Savings
Cost estimate not availableAssistance Fund: Breast Cancer
Commercial or private insurance
Medicare, Medicaid, VA, TRICARE
Cost estimate not availableAssistance Fund: Breast Cancer
Commercial or private insurance
Medicare, Medicaid, VA, TRICARE
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IxempraView full Ixempra profile
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Clinical data sourced from FDA-approved labeling. Coverage data via MMIT. Updated monthly.