pharmacopeia

Boxed warning

HEPATOTOXICITY Hepatotoxicity, including severe or fatal hepatic veno-occlusive disease (VOD), also known as sinusoidal obstruction syndrome (SOS), has been reported in association with the use of MYLOTARG as a single agent, and as part of a combination chemotherapy regimen. Monitor frequently for signs and symptoms of VOD after treatment with MYLOTARG. ( 5.1 and 6.1 ) WARNING: HEPATOTOXICITY See full prescribing information for complete boxed warning. Hepatotoxicity, including severe or fatal hepatic veno-occlusive disease (VOD), also known as sinusoidal obstruction syndrome (SOS), has been reported in association with the use of MYLOTARG. ( 5.1 , 6.1 )

Mechanism of action

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Gemtuzumab ozogamicin is a CD33-directed antibody-drug conjugate (ADC). The antibody portion (hP67.6) recognizes human CD33 antigen.

Nucleic Acid Synthesis

Indications

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  • MYLOTARG is a CD33-directed antibody and cytotoxic drug conjugate indicated for: • treatment of newly-diagnosed CD33-positive acute myeloid leukemia (AML) in adults and pediatric patients 1 month and older ( 1.1 ). • treatment of relapsed or refractory CD33-positive AML in adults and pediatric patients 2 years and older ( 1.2 ).ICD-10: C95.90

Contraindications

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  • MYLOTARG is contraindicated in patients with a history of hypersensitivity to the active substance in MYLOTARG or any of its components or to any of the excipients. Reactions have included anaphylaxis [see Warnings and Precautions (5.2) , Adverse Reactions (6) ] .contraindicated

Dosage & administration

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• Newly-diagnosed, de novo AML (combination regimen) Adults : - Induction: 3 mg/m 2 (up to one 4.5 mg vial) on Days 1, 4, and 7 in combination with daunorubicin and cytarabine ( 2.2 ). - Consolidation: 3 mg/m 2 on Day 1 (up to one 4.5 mg vial) in combination with daunorubicin and cytarabine ( 2.2 ). Pediatric patients 1 month and older : - 3 mg/m 2 for patients with body surface area (BSA) 0.6 m 2 or greater ( 2.2 ). - 0.1 mg/kg for patients with BSA less than 0.6 m 2 ( 2.2 ). - See Full Prescribing Information for complete dosing information ( 2.2 ). • Newly-diagnosed AML (single-agent regimen): Adults : - Induction: 6 mg/m 2 (not limited to one 4.5 mg vial) on Day 1 and 3 mg/m 2 (not limited to one 4.5 mg vial) on Day 8 ( 2.2 ). - Continuation: For patients without evidence of disease progression following induction, up to 8 continuation courses of MYLOTARG 2 mg/m 2 (not limited to one 4.5 mg vial) on Day 1 every 4 weeks ( 2.2 ). • Relapsed or refractory AML (single-agent regimen): Adults and pediatric patients 2 years and older: - 3 mg/m 2 (up to one 4.5 mg vial) on Days 1, 4, and 7 ( 2.2 ). • Premedicate with a corticosteroid, antihistamine, and acetaminophen ( 2.1 ). 2.1 Premedication and Special Considerations • Premedicate adults with acetaminophen 650 mg orally and diphenhydramine 50 mg orally or intravenously 1 hour prior to MYLOTARG dosing and 1 mg/kg methylprednisolone or an equivalent dose of an alternative corticosteroid within 30 minutes prior to infusion of MYLOTARG.

Warnings & precautions

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• Infusion-related reactions (including anaphylaxis): Premedicate with a corticosteroid, acetaminophen, and diphenhydramine. Monitor patients during and for at least 1 hour after the end of the infusion. Interrupt the infusion, administer steroids or antihistamines, or permanently discontinue treatment as necessary ( 2.1 , 5.2 , 6 ). • Hemorrhage: Severe, including fatal, hemorrhage may occur when MYLOTARG is used at recommended doses. Monitor platelet counts frequently ( 5.3 , 6.1 ). • Embryo-fetal toxicity: Can cause fetal harm. Advise patients of reproductive potential of the potential risk to a fetus and to use effective contraception ( 5.6 , 8.1 , 8.3 ). 5.1 Hepatotoxicity, Including Veno-occlusive Liver Disease (VOD) Hepatotoxicity, including life-threatening and sometimes fatal hepatic VOD events, have been reported in patients receiving MYLOTARG as a single agent or as part of a combination chemotherapy regimen [see Adverse Reactions (6) ]. In ALFA-0701, VOD events were reported in 6/131 (5%) adult patients during or following treatment with MYLOTARG, or following later hematopoietic stem cell transplantation (HSCT). The median time from the MYLOTARG dose to onset of VOD was 9 days (range: 2–298 days), with 5 events occurring within 28 days of any dose of MYLOTARG and 1 event occurring greater than 28 days after the last dose of MYLOTARG. Three of the 6 VOD events were fatal. VOD was also reported in 2 patients in the control arm of ALFA-0701 after receiving MYLOTARG as a therapy for relapsed AML.

Adverse reactions

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The following clinically significant adverse reactions are described elsewhere in the labeling: • Hepatotoxicity, including VOD [see Warnings and Precautions (5.1) ] • Infusion-related reactions [see Warnings and Precautions (5.2) ] • Hemorrhage [see Warnings and Precautions (5.3) ] The most common adverse reactions (greater than 15%) were hemorrhage, infection, fever, nausea, vomiting, constipation, headache, increased AST, increased ALT, rash, mucositis, febrile neutropenia, and decreased appetite ( 6 ). To report SUSPECTED ADVERSE REACTIONS, contact Pfizer Inc. at 1-800-438-1985 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Combination Therapy in Newly-Diagnosed De Novo CD33-positive AML The safety of MYLOTARG in first-line combination therapy was evaluated in two prospective clinical trials, Study ALFA-0701 in adults and Study AAML0531 in pediatric patients. Study ALFA-0701 The safety evaluation of MYLOTARG (3 mg/m 2 Day 1, 4 and 7 in combination with daunorubicin and cytarabine [DA]) in adults is based on data from ALFA-0701 for 131 patients treated with MYLOTARG plus DA and in 137 patients treated with DA alone [see Clinical Studies (14.1) ].

Use in specific populations

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Lactation: Advise not to breastfeed ( 8.2 ). 8.1 Pregnancy Risk Summary Based on its mechanism of action and findings from animal studies [see Clinical Pharmacology (12.1) , Nonclinical Toxicology (13.1) ] , MYLOTARG can cause embryo-fetal harm when administered to a pregnant woman. There are no available data on MYLOTARG use in pregnant women to evaluate for a drug-associated risk. In animal reproduction studies, gemtuzumab ozogamicin caused embryo-fetal toxicity, including structural abnormalities and alterations to growth, at maternal systemic exposures that were greater than or equal to 0.4 times the exposure in patients at the maximum recommended dose based on AUC (see Data ) . Advise pregnant women of the potential risk to a fetus. The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2–4% and 15–20%, respectively. Data Animal Data In an embryo-fetal development study in rats, pregnant animals received daily intravenous doses up to 1.2 mg/m 2 /day gemtuzumab ozogamicin during the period of organogenesis.

Pharmacokinetics

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Metabolism
There are no clinical PK data for the fractionated regimen. When gemtuzumab ozogamicin is administered at 9 mg/m 2 (2 doses, 14 days apart), the C max following the first dose for patients who received 9 mg/m 2 gemtuzumab ozogamicin was 3.0 mg/L and increased to 3.6 mg/L after the second dose.

Approval history

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  • Sep 1, 2017BLABLA761060Wyeth Pharms Inc

FAERS reports

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Reference statistics only. FAERS reports are voluntarily submitted and are not incidence rates, safety signals, or causal evidence. Counts reflect reporting volume — how often a reaction was reported, not how often it occurs. For decision-grade use, consult openFDA and the FAERS Public Dashboard directly.
3,609 total reports matchedLatest report Share = reports listing the reaction ÷ total matched reports. Rows can sum to >100% because a single report often lists multiple reactions.
  1. 1Febrile Neutropenia69419%
  2. 2Pyrexia3259.0%
  3. 3Sepsis2988.3%
  4. 4Venoocclusive Liver Disease2597.2%
  5. 5Thrombocytopenia2376.6%
  6. 6Platelet Count Decreased2356.5%
  7. 7Pneumonia1975.5%
  8. 8Neutropenia1905.3%
  9. 9Aspartate Aminotransferase Increased1845.1%
  10. 10White Blood Cell Count Decreased1845.1%
  11. 11Off Label Use1684.7%
  12. 12Alanine Aminotransferase Increased1634.5%
  13. 13Drug Ineffective1594.4%
  14. 14Chills1574.4%
  15. 15Acute Myeloid Leukaemia1474.1%

Literature

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Recent PubMed references pinned to Gemtuzumab Ozogamicin as a MeSH major topic. Citations link to pubmed.ncbi.nlm.nih.gov.

Clinical trials

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The 10 most recently updated of 116 ClinicalTrials.gov registrations naming Gemtuzumab Ozogamicin as an intervention. Registration is not evidence of efficacy or safety — reference crosswalk only.

Frequently asked questions

How does Gemtuzumab Ozogamicin work?
Gemtuzumab ozogamicin is a CD33-directed antibody-drug conjugate (ADC). The antibody portion (hP67.6) recognizes human CD33 antigen.
What is Gemtuzumab Ozogamicin used for?
According to FDA labeling, Gemtuzumab Ozogamicin carries indications including: MYLOTARG is a CD33-directed antibody and cytotoxic drug conjugate indicated for: • treatment of newly-diagnosed CD33-positive acute myeloid leukemia (AML) in adults and pediatric patients 1 month and older ( 1.1 ). • treatment of relapsed or refractory CD33-positive AML in adults and pediatric patients 2 years and older ( 1.2 ).. This is a reference summary of labeled uses, not medical advice or a treatment recommendation.
What class of drug is Gemtuzumab Ozogamicin?
Gemtuzumab Ozogamicin is classified as Other monoclonal antibodies and antibody drug conjugates, CD33-directed Immunoconjugate, CD33-directed Antibody Interactions, Nucleic Acid Synthesis Inhibitors, Decreased DNA Integrity, Increased Cellular Death.
What are the brand names for Gemtuzumab Ozogamicin?
Gemtuzumab Ozogamicin is marketed under brand names including Mylotarg.
What are the contraindications for Gemtuzumab Ozogamicin?
Gemtuzumab Ozogamicin labeling lists contraindications including: MYLOTARG is contraindicated in patients with a history of hypersensitivity to the active substance in MYLOTARG or any of its components or to any of the excipients. Reactions have included anaphylaxis [see Warnings and Precautions (5.2) , Adverse Reactions (6) ] .. Always consult the full prescribing information and a clinician.
Note. Data for gemtuzumab-ozogamicin is illustrative MVP content compiled from public sources. pharmacopeia is for educational and informational use only and is not a substitute for professional medical advice.

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