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APOMORPHINE INJ,SOLN

Clinical Criteria Summary

Document 794

Indication

  • Treatment of motor fluctuations in adults with advanced Parkinson’s disease

Patient Population & Eligibility Criteria

  • Adults ≥30 years old
  • Parkinson’s disease diagnosis >3 years prior to therapy initiation
  • Stable dose of oral medications for at least 4 weeks prior to enrollment
  • Mean of ≥3 hours of off time per day over 2 days at screening/baseline, with no single day recording <2 hours of off time
  • Patients experiencing persistent motor fluctuations despite optimized oral or transdermal medication/levodopa therapy
  • Considered when oral medications can no longer manage motor fluctuations and dyskinesias
  • May be appropriate for patients who are not candidates for deep brain stimulation (DBS) or other invasive devices (e.g., elderly, non-surgical candidates)

Dosing & Administration

  • Administered as a continuous subcutaneous infusion via Onapgo pump using 98 mg/20 mL (4.9 mg/mL) single dose cartridges
  • Initial dose: 1 mg/hour
  • Titrate based on response and tolerability in 0.5 to 1 mg/hour increments at intervals ≥1 day
  • Maximum continuous dosage: 6 mg/hour
  • Maximum total daily dose (including continuous infusion and extra doses): 98 mg/day administered over the waking day (e.g., 16 hours)

Pretreatment & Monitoring Requirements

  • Due to incidence of nausea and vomiting, recommend starting trimethobenzamide 300 mg three times a day 3 days prior to initial apomorphine dose
  • Alternative: Start without antiemetics and titrate slowly based on effectiveness and tolerance
  • Monitor for infusion site reactions (skin nodules, erythema/pruritus, bruising), which are frequent reasons for discontinuation; mitigation strategies for skin irritation may be considered

Contraindications

  • Concomitant use of 5HT3 antagonists (including antiemetics such as ondansetron and alosetron)
  • Hypersensitivity or allergic reaction to apomorphine or any excipients, including sulfite (sodium metabisulfite)

Warnings & Precautions

  • Nausea and vomiting
  • Somnolence and falling asleep during activities of daily living
  • Syncope/hypotension and orthostatic hypotension
  • Falls
  • Infusion site reactions
  • Hallucinations/psychosis
  • Dyskinesia
  • Hemolytic anemia
  • Impulse control disorder/compulsive behaviors
  • Cardiac events
  • QTc prolongation
  • Hypersensitivity
  • Fibrotic complications
  • Priapism

Drug Interactions

  • 5HT3 antagonists (risk of hypotension)
  • Antihypertensive drugs and vasodilators (risk of hypotension)
  • Alcohol (risk of hypotension)
  • Dopamine antagonists (may diminish efficacy)
  • Drugs prolonging QT/QTc interval

Special Populations

  • Pregnancy: No adequate data available
  • Lactation: No data available

Clinical Considerations & Place in Therapy

  • Device-assisted therapies considered when oral medications can no longer manage motor fluctuations and dyskinesias
  • Non-motor symptoms of advanced Parkinson’s disease (e.g., severe dementia, chronic hallucinations, or psychosis) may impact therapy selection
  • Indicated for use during waking hours; daytime-only pump wear may be preferred by some patients, with bolus function available for morning use to prevent morning akinesia
  • Higher incidence of somnolence compared to continuous levodopa-based therapies (subcutaneous or intestinal gel)

Document 809

Exclusion Criteria

  • Concurrent use of apomorphine injections
  • Concurrent use of a 5-HT3 antagonist (e.g., ondansetron, granisetron, dolasetron, palonosetron and alosetron)
  • Concurrent use of continuous subcutaneous or intrajejunal infusion of carbidopa/levodopa
  • Baseline resting corrected QT interval (QTc) > 450 msec for males and > 470 msec for females on electrocardiogram (ECG) or other risk factors for a prolonged QT interval

Inclusion Criteria

  • Diagnosis of Idiopathic Parkinson’s Disease
  • Patient is under the care of a VA or VA Community Care neurologist or locally designated expert
  • Motor fluctuations (“wearing off”) that require dosing of dopaminergic medications at intervals every 4 hours or less
  • Either higher frequency (≥5 times daily) carbidopa/levodopa immediate-release (IR) tablet or carbidopa/levodopa extended-release (ER) capsules throughout the day have not adequately resolved OFF periods
  • Contraindication, intolerance, or inadequate therapeutic response to at least one agent from two of the following classes: dopamine agonist, catechol-O methyl transferase [COMT] inhibitor, monoamine oxidase type B [MAO B] inhibitor
  • Discussion with the patient/caregiver/family regarding realistic efficacy expectations, device management, and potential device-related complications documented in the patient’s medical record

QT Prolongation Risk Factors

  • Electrolyte abnormalities
  • Heart failure
  • Congenital long QT syndrome
  • Family history of long QT syndrome
  • Concomitant medications known to prolong QTc interval

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