Gemtuzumab Ozogamicin
/api/v1/drug/gemtuzumab-ozogamicinBoxed 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
Sourced from openFDAGemtuzumab ozogamicin is a CD33-directed antibody-drug conjugate (ADC). The antibody portion (hP67.6) recognizes human CD33 antigen.
Indications
Sourced from openFDA- 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
Sourced from openFDA- 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
Sourced from openFDA• 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
Sourced from openFDA• 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
Sourced from openFDAThe 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
Sourced from openFDALactation: 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
Sourced from openFDA- 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
Sourced from openFDA- Sep 1, 2017BLABLA761060Wyeth Pharms Inc
FAERS reports
- 1Febrile Neutropenia69419%
- 2Pyrexia3259.0%
- 3Sepsis2988.3%
- 4Venoocclusive Liver Disease2597.2%
- 5Thrombocytopenia2376.6%
- 6Platelet Count Decreased2356.5%
- 7Pneumonia1975.5%
- 8Neutropenia1905.3%
- 9Aspartate Aminotransferase Increased1845.1%
- 10White Blood Cell Count Decreased1845.1%
- 11Off Label Use1684.7%
- 12Alanine Aminotransferase Increased1634.5%
- 13Drug Ineffective1594.4%
- 14Chills1574.4%
- 15Acute Myeloid Leukaemia1474.1%
Literature
Recent PubMed references pinned to Gemtuzumab Ozogamicin as a MeSH major topic. Citations link to pubmed.ncbi.nlm.nih.gov.
- Analysis of Clinical Impact of CD33 rs12459419 Single-Nucleotide Polymorphism in AML Treated with Intensive Chemotherapy Without Gemtuzumab Ozogamicin.International journal of molecular sciences · 2026 · Helfenstein S, Shaforostova I, Seipel K, et al.PMID 42123630DOI 10.3390/ijms27094050
- CRISPR-Cas9 CD33-deleted allogeneic hematopoietic cell transplantation with gemtuzumab ozogamicin maintenance in AML: a phase 1/2 trial.Nature medicine · 2026 · DiPersio JF, Koehne G, Shah NN, et al.PMID 42120728DOI 10.1038/s41591-026-04362-1
- Targeting BCL-2 and PI3K signaling pathways enhances cytotoxicity of gemtuzumab ozogamicin against acute myeloid leukemia cells.Biochemical and biophysical research communications · 2026 · Opydo M, Wojtaszek M, Mosurek A, et al.PMID 41980559DOI 10.1016/j.bbrc.2026.153752
- Safety and efficacy of combining midostaurin and gemtuzumab ozogamicin with induction chemotherapy in FLT3-mutated AML.Blood advances · 2025 · Russell N, Othman J, Cumming O, et al.PMID 41026969DOI 10.1182/bloodadvances.2025017244
- Gemtuzumab ozogamicin in first-line treatment of CBF-AML: insights from a retrospective multi-center analysis.Leukemia · 2025 · Ronnacker J, Muller PJ, Mikesch JH, et al.PMID 40691504DOI 10.1038/s41375-025-02700-9
- Case Report: Rapid response to gemtuzumab-ozogamicin in a pediatric patient with refractory systemic mastocytosis with AML1::ETO+ acute myeloid leukemia.Frontiers in immunology · 2025 · Xue S, Chen M, Sun HP, et al.PMID 40270973DOI 10.3389/fimmu.2025.1566805
- Evaluation of Gemtuzumab Ozogamicin and Anthracycline Dosing for Favorable Risk Acute Myeloid Leukemia.European journal of haematology · 2025 · Mort JF, Brighton D, DiBenedetto S, et al.PMID 39601208DOI 10.1111/ejh.14354
- Long-term follow-up of a phase 2 study of all-trans retinoic acid, arsenic trioxide, and gemtuzumab ozogamicin in acute promyelocytic leukemia.Cancer · 2025 · Jen WY, Marvin-Peek J, Kantarjian HM, et al.PMID 39584789DOI 10.1002/cncr.35662
Clinical trials
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.
- A Phase I Study Investigating the Combination of the Menin Inhibitor Ziftomenib With Venetoclax and Gemtuzumab in Pediatric Patients With Acute Myeloid LeukemiaRecruiting · Phase 1 · Interventional · 22 enrolled · M.D. Anderson Cancer CenterNCT06448013updated 2026-06-12
- Testing the Addition of Venetoclax or Gemtuzumab Ozogamicin (GO) to Usual Treatment Regimen (Cytarabine and Daunorubicin, "7+3") for Core Binding Factor Acute Myeloid Leukemia (CBF-AML) to Improve Response (A MYELOMATCH Treatment Trial)Recruiting · Phase 2 · Interventional · 162 enrolled · National Cancer Institute (NCI)NCT06917911updated 2026-06-11
- MYELOMATCH: A Screening Study to Assign People With Myeloid Cancer to a Treatment Study or Standard of Care Treatment Within myeloMATCH (MyeloMATCH Screening Trial)Recruiting · Phase 2 · Interventional · 2,000 enrolled · National Cancer Institute (NCI)NCT05564390updated 2026-06-11
- IMPACT-AML: A Randomized Pragmatic Clinical Trial for Relapsed or Refractory Acute Myeloid Leukemia.Recruiting · Phase 3 · Interventional · 339 enrolled · Istituto Romagnolo per lo Studio dei Tumori Dino Amadori IRST S.r.l. IRCCSNCT06713837updated 2026-06-10
- A Phase Ia/Ib Trial of Revumenib Combined With Cytarabine, Daunorubicin, and Gemtuzumab Ozogamicin (GO) in Frontline and Relapsed /Refractory Pediatric Acute Leukemia PatientsWithdrawn · Phase 1 · Interventional · 0 enrolled · M.D. Anderson Cancer CenterNCT07052994updated 2026-06-05
- Azacitidine and Gemtuzumab Ozogamicin in Treating Older Patients With Previously Untreated Acute Myeloid LeukemiaActive not recruiting · Phase 2 · Interventional · 133 enrolled · National Cancer Institute (NCI)NCT00658814updated 2026-05-29
- Dexrazoxane Hydrochloride in Preventing Heart-Related Side Effects of Chemotherapy in Participants With Blood CancersRecruiting · Phase 2 · Interventional · 100 enrolled · M.D. Anderson Cancer CenterNCT03589729updated 2026-05-22
- Liposome-encapsulated Daunorubicin-Cytarabine and Gemtuzumab Ozogamicin in Treating Patients With Relapsed or Refractory Acute Myeloid Leukemia (AML) or High Risk Myelodysplastic SyndromeActive not recruiting · Phase 2 · Interventional · 50 enrolled · M.D. Anderson Cancer CenterNCT03672539updated 2026-05-20
- Tretinoin and Arsenic Trioxide With or Without Gemtuzumab Ozogamicin in Treating Patients With Previously Untreated Acute Promyelocytic LeukemiaRecruiting · Phase 2 · Interventional · 151 enrolled · M.D. Anderson Cancer CenterNCT01409161updated 2026-05-20
- Liposomal Cytarabine, Daunorubicin, and Gemtuzumab Ozogamicin for the Treatment of Relapsed Refractory Pediatric Patients With Acute Myeloid LeukemiaCompleted · Phase 1 · Interventional · 1 enrolled · M.D. Anderson Cancer CenterNCT04915612updated 2026-05-20
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.
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.