| Carcinoma breast stage IV
Abraxane vs Arimidex
Side-by-side clinical, coverage, and cost comparison for carcinoma breast stage iv.Deep comparison between: Abraxane 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 Abraxane based on FDA-approved prescribing information
Coverage gaps3 major payers require step therapy for Arimidex but not Abraxane, including UnitedHealthcare
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Category
Abraxane
Arimidex
At A Glance
IV infusion
Weekly to every 3 weeks
Microtubule inhibitor
Oral
Daily
Aromatase inhibitor
Indications
- Carcinoma breast stage IV
- Non-Small Cell Lung Carcinoma
- Adenocarcinoma of pancreas
- Malignant neoplasm of breast
- Locally advanced breast cancer
- Carcinoma breast stage IV
Dosing
Carcinoma breast stage IV 260 mg/m2 IV over 30 minutes every 3 weeks.
Non-Small Cell Lung Carcinoma 100 mg/m2 IV over 30 minutes on Days 1, 8, and 15 of each 21-day cycle; administer carboplatin on Day 1 of each 21-day cycle immediately after ABRAXANE.
Adenocarcinoma of pancreas 125 mg/m2 IV over 30-40 minutes on Days 1, 8, and 15 of each 28-day cycle; administer gemcitabine on Days 1, 8, and 15 of each 28-day cycle immediately after ABRAXANE.
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
- Baseline neutrophil count below 1500 cells/mm3
- History of severe hypersensitivity reaction to ABRAXANE
- Hypersensitivity to anastrozole or any excipient (including anaphylaxis, angioedema, and urticaria)
Adverse Reactions
Most common (>=20%) Alopecia, neutropenia, sensory/peripheral neuropathy, abnormal ECG, fatigue/asthenia, myalgia/arthralgia, AST elevation, alkaline phosphatase elevation, anemia, nausea, infections, diarrhea, thrombocytopenia, peripheral edema, pyrexia, vomiting, decreased appetite, rash, dehydration
Serious Anemia, pneumonia, pyrexia, dehydration, vomiting
Postmarketing Severe hypersensitivity reactions, congestive heart failure, left ventricular dysfunction, atrioventricular block, pneumonitis, interstitial pneumonia, pulmonary embolism, cranial nerve palsies, vocal cord paresis, autonomic neuropathy, cystoid macular edema, hepatic necrosis, intestinal obstruction, intestinal perforation, pancreatitis, ischemic colitis, tumor lysis syndrome, Stevens-Johnson syndrome, toxic epidermal necrolysis
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
ABRAXANE is a microtubule inhibitor that promotes assembly and stabilization of microtubules from tubulin dimers, inhibiting the normal dynamic reorganization of the microtubule network essential for vital interphase and mitotic cellular functions.
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
Abraxane
- Covered on 5 commercial plans
- PA (12/12) · 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
Abraxane
- 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
Abraxane
- Covered on 0 commercial plans
- PA (2/3) · 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
No savings programs available for Abraxane.
Cost estimate not availableAssistance Fund: Breast Cancer
Commercial or private insurance
Medicare, Medicaid, VA, TRICARE
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AbraxaneView full Abraxane profile
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Clinical data sourced from FDA-approved labeling. Coverage data via MMIT. Updated monthly.