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HomeAboutDosingEfficacy & SafetyEfficacy & Safety Clinical TrialEfficacySafetySavings & SupportSavings & SupportEventsMaterialsVideosPersonalized patient supportOrdering BESPONSANCCN Guidelines® Recommendations
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The analysis of OS did not meet a prespecified boundary for statistical significance of P=0.0104.1,2

Study design: INO-VATE ALL was a Phase 3, open-label, randomized (1:1) study of BESPONSA vs investigator’s choice of SC in 326 adult patients with relapsed or refractory B-cell precursor ALL. SC included FLAG, HiDAC, or Ara-C + MXN. All patients were required to have ≥5% bone marrow blasts and to have received 1 or 2 previous induction chemotherapy regimens for B-cell precursor ALL. Patients with Ph+ B-cell precursor ALL were required to have failed treatment with ≥1 TKI and SC. Single-agent BESPONSA was given by 1-hour IV infusion in 3 fractionated doses at 1.8 mg/m2 each 3- to 4-week cycle, reduced to 3 fractionated doses at 1.5 mg/m2 per cycle after achieving CR/CRi, for up to 6 cycles. For patients proceeding to HSCT, the recommended treatment duration with BESPONSA is 2 cycles. Patients who do not achieve a CR or CRi within 3 cycles should discontinue treatment.1,3

The efficacy of BESPONSA was established on the basis of CR, duration of CR, and proportion of MRD-negative CR (<1 x 10-4 of bone marrow nucleated cells by flow cytometry) in the first 218 patients randomized.

Clinical Study Results

The efficacy and safety of BESPONSA were evaluated in a Phase 3 clinical trial vs standard chemotherapy.1,2

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BESPONSA Safety Profile

Review the safety profile of BESPONSA, including the BOXED WARNING.1

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Dosing & Administration

BESPONSA offers convenient 1-hour dosing by IV infusion and can be administered in the outpatient setting.1,2

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Support that's personalized for your patients

For live, personalized support, call 1-877-744-5675 (Monday–Friday 8 AM–8 PM ET) or visit to learn more. 

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National Comprehensive Cancer Network (NCCN®) Recommended

Inotuzumab ozogamicin (BESPONSA®) is a recommended treatment option in the NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines®)4 

  • For adults with Ph– relapsed or refractory B-cell precursor ALL: Category 1
  • For adults with Ph+ relapsed or refractory B-cell precursor ALL: Category 2A
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ReferencesCR, per Endpoint Adjudication Committee (EAC), was defined as <5% blasts in the bone marrow and the absence of peripheral blood leukemic blasts, full recovery of peripheral blood  counts (platelets ≥100 x 109/L and ANC ≥1 x 109/L), and resolution of any extramedullary disease (EMD). CRi, per EAC, was defined as <5% blasts in the bone marrow and the absence  of peripheral blood leukemic blasts, incomplete recovery of peripheral blood counts (platelets <100 × 109/L and/or ANC <1 × 109/L), and resolution of any EMD.11-sided P value using chi-squared test.1MRD-negativity rate was defined as the number of patients who achieved MRD negativity (<1 × 10-4 by flow cytometry) divided by the total number of patients who achieved CR/CRi per EAC.11-sided P value using log-rank test.3ANC=absolute neutrophil count; Ara-C + MXN=cytarabine + mitoxantrone; CI=confidence interval; CR=complete remission; CRi=complete remission with incomplete hematologic recovery; FLAG=fludarabine, cytarabine, and granulocyte colony-stimulating factor; HiDAC=high-dose cytarabine; HSCT=hematopoietic stem cell transplant; IV=intravenous; MRD=minimal residual disease; OS=overall survival; Ph–=Philadelphia chromosome–negative; Ph+=Philadelphia chromosome–positive; TKI=tyrosine kinase inhibitor.
ReferencesBESPONSA Prescribing Information. New York, NY: Pfizer Inc.  Data on file. Pfizer Inc., New York, NY. Kantarjian HM, DeAngelo DJ, Stelljes M, et al. Inotuzumab ozogamicin versus standard therapy for acute lymphoblastic leukemia. N Engl J Med. 2016;375(8):740-753.  Referenced with permission from the NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines®) Acute Lymphoblastic Leukemia V1.2022. © National Comprehensive Cancer Network, Inc. 2022. All rights reserved. Accessed October 31, 2022. To view the most recent and complete version of the guideline, go online to NCCN makes no warranties of any kind whatsoever regarding their content or its use or application and disclaims any responsibility for its use or application in any way.

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INDICATIONBESPONSA® (inotuzumab ozogamicin) is indicated for the treatment of adults with relapsed or refractory B-cell precursor acute lymphoblastic leukemia (ALL).
Important Safety Information


  • Hepatotoxicity, including fatal and life-threatening VOD, occurred in patients who received BESPONSA. The risk of VOD was greater in patients who underwent HSCT after BESPONSA treatment. The use of HSCT conditioning regimens containing 2 alkylating agents and last total bilirubin ≥ upper limit of normal (ULN) before HSCT were significantly associated with an increased risk of VOD
  • Other risk factors for VOD in patients treated with BESPONSA included ongoing or prior liver disease, prior HSCT, increased age, later salvage lines, and a greater number of BESPONSA treatment cycles
  • Elevation of liver tests may require dosing interruption, dose reduction, or permanent discontinuation of BESPONSA. Permanently discontinue treatment if VOD occurs. If severe VOD occurs, treat according to standard medical practice
  • There was a higher post-HSCT non-relapse mortality rate in patients receiving BESPONSA, resulting in a higher Day 100 post-HSCT mortality rate

Hepatotoxicity, Including Hepatic VOD: Hepatotoxicity, including fatal and life-threatening VOD, occurred in 23/164 patients (14%) during or following treatment with BESPONSA or following subsequent HSCT. VOD was reported up to 56 days after the last dose during treatment or follow-up without an intervening HSCT. The median time from HSCT to onset of VOD was 15 days.

Patients with prior VOD or serious ongoing liver disease are at an increased risk of worsening liver disease, including development of VOD, following treatment with BESPONSA. Monitor closely for signs and symptoms of VOD; these may include elevations in total bilirubin, hepatomegaly (which may be painful), rapid weight gain, and ascites. For patients proceeding to HSCT, the recommended duration of treatment with BESPONSA is 2 cycles. A third cycle may be considered for patients who do not achieve a CR or CRi and MRD-negativity after 2 cycles. Monitor liver tests closely during the first month post HSCT, then less frequently thereafter, according to standard medical practice.

Grade 3/4 increases in aspartate aminotransferase, alanine aminotransferase, and total bilirubin occurred in 7/160 (4%), 7/161 (4%), and 8/161 (5%) patients, respectively.

Increased Risk of Post-HSCT Non-Relapse Mortality (NRM): There was a higher post-HSCT NRM rate in patients receiving BESPONSA, resulting in a higher Day 100 post-HSCT mortality rate. The rate of post-HSCT NRM was 31/79 (39%) with BESPONSA and 8/35 (23%) with investigator’s choice of chemotherapy. In the BESPONSA arm, the most common causes of post-HSCT NRM included VOD and infections. Monitor closely for toxicities post HSCT, including signs and symptoms of infection and VOD.

Myelosuppression: Myelosuppression, and severe, life-threatening, and fatal complications of myelosuppression, including hemorrhagic events and infections, have occurred with BESPONSA. Thrombocytopenia and neutropenia were reported in 83/164 patients (51%) and 81/164 patients (49%), respectively. Febrile neutropenia was reported in 43/164 patients (26%).

Monitor complete blood counts prior to each dose of BESPONSA and monitor for signs and symptoms of infection, bleeding/hemorrhage, or other effects of myelosuppression during treatment and provide appropriate management. As appropriate, administer prophylactic anti-infectives during and after treatment with BESPONSA. Dose interruption, dose reduction, or permanent discontinuation may be required.

Infusion-Related Reactions: Infusion-related reactions (all Grade 2) were reported in 4/164 patients (2%). Premedicate with a corticosteroid, antipyretic, and antihistamine prior to dosing. Monitor patients closely during and for at least 1 hour after the end of the infusion for the potential onset of infusion-related reactions including symptoms such as fever, chills, rash, or breathing problems. Interrupt the infusion and institute appropriate medical management if an infusion-related reaction occurs. Depending on the severity, consider discontinuation of the infusion or administration of steroids and antihistamines. For severe or life-threatening infusion reactions, permanently discontinue BESPONSA.

QT Interval Prolongation: Increases in QT interval corrected for heart rate using Fridericia’s formula of ≥60 msec from baseline were measured in 4/162 patients (3%). Administer BESPONSA with caution in patients who have a history of or predisposition to QTc prolongation, who are taking medicinal products that are known to prolong QT interval, and in patients with electrolyte disturbances. Obtain electrocardiograms and electrolytes prior to treatment and after initiation of any drug known to prolong QTc, and periodically monitor as clinically indicated during treatment.

Embryo-Fetal Toxicity: BESPONSA can cause embryo-fetal harm. Apprise pregnant women of the potential risk to the fetus. Advise males and females of reproductive potential to use effective contraception during BESPONSA treatment and for at least 5 and 8 months after the last dose, respectively. Advise women to contact their healthcare provider if they become pregnant or if pregnancy is suspected during treatment with BESPONSA.

Adverse Reactions: The most common (≥20%) adverse reactions observed with BESPONSA were thrombocytopenia, neutropenia, infection, anemia, leukopenia, fatigue, hemorrhage, pyrexia, nausea, headache, febrile neutropenia, transaminases increased, abdominal pain, gamma-glutamyltransferase increased, and hyperbilirubinemia. The most common (≥2%) serious adverse reactions were infection, febrile neutropenia, hemorrhage, abdominal pain, pyrexia, VOD, and fatigue.

Nursing Mothers: Advise women against breastfeeding while receiving BESPONSA and for 2 months after the last dose.

INDICATION BESPONSA® (inotuzumab ozogamicin) is indicated for the treatment of adults with relapsed or refractory B-cell precursor acute lymphoblastic leukemia (ALL).

Please see full Prescribing Information, including BOXED WARNING.