Decnupaz Injection, Powder, Lyophilized, For Solution
FDA Label NDC 0074-0282

Full FDA labeling including Indications, Dosage, Usage, and Precautions

Structured Product Label

The following Structured Product Label (SPL) was submitted to the FDA by Abbvie Inc. for the product Decnupaz (NDC 0074-0282). This document serves as the official prescribing information, containing essential scientific data and clinical materials required for healthcare providers and patients.

This specific version of the label includes detailed information regarding warning: hepatotoxicity, including hepatic veno-occlusive disease (vod) (also known as sinusoidal obstruction syndrome), 1.       indications and usage, 2.1       important administration instructions, 2.2       recommended dosage, 2.3       premedications, 2.4       dosage modifications for adverse reactions, 2.5       instructions for preparation, 2.6       administration, and other regulatory disclosures. Use the navigation below to review specific sections of the FDA submission.

Label Section Quick Index

Warning: Hepatotoxicity, Including Hepatic Veno-Occlusive Disease (Vod) (Also Known As Sinusoidal Obstruction Syndrome)

DECNUPAZ can cause hepatotoxicity, including severe or fatal hepatic VOD (also known as sinusoidal obstruction syndrome) [see Warnings and Precautions (5.1)].

Closely monitor patients for signs and symptoms of VOD including elevations in liver tests, hepatomegaly (which may be painful), rapid weight gain, and ascites [see Warnings and Precautions (5.1)].

Monitor liver tests, including ALT, AST, and total bilirubin, prior to each dose of DECNUPAZ [see Warnings and Precautions (5.1)].

Delay DECNUPAZ dosage for liver test elevation. Permanently discontinue DECNUPAZ for patients who experience VOD [see Dosage and Administration (2.4) and Warnings and Precautions (5.1)].

1.       Indications And Usage

DECNUPAZ is indicated for the treatment of adult patients with blastic plasmacytoid dendritic cell neoplasm (BPDCN).

2.1       Important Administration Instructions

DECNUPAZ requires reconstitution followed by two dilutions prior to administration.

Read the entire preparation instructions carefully before preparing and administering DECNUPAZ.

2.3       Premedications

Administer the premedications in Table 1 the day prior to and the day of the infusion of DECNUPAZ to reduce the risk of infusion-related reactions (IRRs) [see Warnings and Precautions (5.2)].

Table 1. Recommended Premedications Prior to Each DECNUPAZ Infusion
Administration Time Prior to DECNUPAZ InfusionPremedicationRoute of AdministrationDose (or equivalent)
Day before DECNUPAZ infusion CorticosteroidOral or intravenousDexamethasone 8 mg
twice daily
30 to 60 minutes prior to infusionCorticosteroidIntravenous Dexamethasone 8 mg
AntihistamineIntravenous Diphenhydramine 25 mg to 50 mg
AntipyreticOral Acetaminophen 325 mg to 650 mg

2.4       Dosage Modifications For Adverse Reactions

Table 2 provides recommended dosage modifications for DECNUPAZ due to adverse reactions. 

Table 2. Recommended Dosage Modifications for Adverse Reactions
Adverse ReactionSeverity of Adverse ReactionaDose Modification Guidelines
Veno-occlusive disease (VOD) [see Warnings and Precautions (5.1)]Any Grade
  • Permanently discontinue DECNUPAZ
Increased aspartate aminotransferase (AST) or alanine aminotransferase (ALT) [see Warnings and Precautions (5.1)]Either AST or ALT is >2.5 x ULN
  • Delay further DECNUPAZ dosing until AST or ALT have returned to ≤2.5 × ULN 
Increased bilirubin [see Warnings and Precautions (5.1)]Total bilirubin > 1.5 × ULN
  • Delay further DECNUPAZ dosing until total bilirubin has returned to ≤1.5 × ULN
Infusion-related reactions [see Warnings and Precautions (5.2)]Grade 2
  • Interrupt DECNUPAZ infusion and institute appropriate medical management
  • After full resolution of symptoms, resume DECNUPAZ infusion at 50% of the previous rate and if no further symptoms appear, increase rate as appropriate until infusion is completed
Grade 3
  • Stop DECNUPAZ infusion and institute appropriate medical management
  • After full resolution of symptoms, resume the infusion at 50% of the previous rate
  • If symptoms recur, permanently discontinue
Grade 4
  • Permanently discontinue DECNUPAZ
Edema [see Warnings and Precautions (5.3)]Grade 1 (5-10% inter-limb discrepancy in volume or circumference,
4 kg weight gain, or 1+ pitting edema (2 mm))  
  • Follow weekly weights
  • Consider administering diuretic therapy
Grade 2 (10-30% inter-limb discrepancy in volume or circumference, >4 kg weight gain, or 2+ pitting edema (4 mm)) 
  • Administer diuretic therapy
  • Manage hypoalbuminemia as needed
  • Delay further DECNUPAZ dosing until edema has returned to Grade 0-1 or baseline
  • If delayed more than 2 weeks, consider dose reduction before resuming
Grade 3 (> 30% inter-limb discrepancy in volume, or 3+/4+ pitting edema (>6 mm))
  • Consider combination diuretic therapy
  • Manage hypoalbuminemia as needed
  • Delay further DECNUPAZ dosing until edema has returned to Grade 0-1 or baseline
  • Consider resuming DECNUPAZ infusion at 0.015 mg/kg intravenously once every 3 weeks 
Grade 4 (life threatening) 
  • Permanently discontinue DECNUPAZ
Other Non-hematologic Adverse Reactions [see Adverse Reactions (6.1)]Grade 3
  • Delay further DECNUPAZ dosing until resolved to ≤ Grade 2 or baseline
Grade 4
  • Permanently discontinue DECNUPAZ

ULN=upper limit of normal

aNational Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 4.03; Grade 1 is mild, Grade 2 is moderate, Grade 3 is severe, and Grade 4 is life-threatening.

2.5       Instructions For Preparation

Preparation
  • Use aseptic technique to prepare DECNUPAZ.
  • DECNUPAZ is a hazardous drug. Follow applicable special handling and disposal procedures in accordance with local requirements.1
  • Determine the dose and the number of DECNUPAZ vials needed. More than one vial may be needed to achieve a full dose.
  • Remove the DECNUPAZ vial(s) from the refrigerator and allow the vial(s) to reach room temperature 15°C to 30°C (59℉ to 86°F) before use.
Reconstitution
  • Using a sterile syringe, reconstitute DECNUPAZ by slowly injecting 1.1 mL of Sterile Water for Injection into each vial to obtain a concentration of 2 mg/mL. Each single-dose vial contains 1 mL (2 mg) of withdrawable DECNUPAZ.
  • Gently swirl the vial in a circular motion. Do not shake.
  • Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. The reconstituted solution in each vial should appear clear to slightly opalescent, colorless to slightly yellow and free of visible contaminants, particles and/or particulates. Do not use if discoloration or particulate matter is present.
  • DECNUPAZ contains no preservative. Use reconstituted solution immediately. If not used immediately, store the reconstituted DECNUPAZ vials in a refrigerator at 2°C to 8°C (36°F to 46°F) for up to 4 hours from the time of reconstitution. Do not freeze.  
First Dilution
  • DECNUPAZ must be diluted with 5% Dextrose Injection.
  • Add 4.8 mL of 5% Dextrose Injection to the reconstituted solution in the vial. Mix the diluted solution by gentle inversion. Do not shake.
  • The resulting diluted solution concentration is 0.4 mg/mL.
  • Calculate the required administration volume needed from the first dilution of vial(s).
    Volume needed from vial(s) after first dilution (mL) = Dose (mg) / 0.4 mg/mL
  • DECNUPAZ requires a second dilution prior to administration.
Second Dilution
  • Withdraw the calculated volume from the first dilution of vial(s) using an appropriately sized syringe.
  • Withdraw an equal volume of 5% Dextrose Injection in an appropriately sized second syringe.
  • Attach a connector to the two syringes and transfer DECNUPAZ into the syringe containing 5% Dextrose Injection.
  • Disconnect the syringes. Draw air into the syringe containing the DECNUPAZ diluted solution and close.  
  • Gently invert the syringe to mix the solution. Do not shake.
  • Remove air bubbles from the syringe before administration.
  • The final concentration is 0.2 mg/mL.
  • Discard any unused drug remaining in the vial(s).
  • Do not use an in-line filter due to increased drug loss. If an in-line filter is required, a 1.2 micron polyethersulfone (PES) filter can be used.

Storage of Diluted Solution

  • Immediately use diluted DECNUPAZ solution.
  • The total storage time from the start of dose preparation to completion of administration should not exceed 24 hours. Store the diluted solution of DECNUPAZ under refrigeration at 2°C to 8°C (36°F to 46°F) for no more than 24 hours, including up to 8 hours at room temperature at 9°C to 25°C (48°F to 77°F), from the time of reconstitution to completion of the intravenous infusion.
  • Discard diluted infusion solution if storage time exceeds these limits.
  • If refrigerated, allow approximately 30 minutes for the diluted solution to come to room temperature prior to administration. Do not shake.
  • Do not freeze the diluted infusion solution.
  • Protect from light during storage.
  • Do not shake.

2.6       Administration

  • After preparing the dose for infusion, visually inspect the syringe content for particulates and discard if present.
  • Do not mix DECNUPAZ with any other drugs or any intravenous fluids other than 5% Dextrose Injection.
  • Protect the intravenous syringe from light using a light-blocking cover during infusion. The infusion line does not need to be protected from light.
  • Administer DECNUPAZ as an intravenous infusion only. Do not administer as an intravenous push or bolus.
    • The first infusion of DECNUPAZ should be administered at a rate of 0.8 mL/min (0.165 mg/min) for the first 30 minutes.
    • If well tolerated, the infusion rate can be increased after 30 minutes to 1.7 mL/min (0.33 mg/min), if necessary.
    • Subsequent infusions may be delivered at the highest tolerated rate.

    • Following the infusion, flush the intravenous line with sufficient volume of 5% Dextrose Injection to ensure delivery of the full dose. Do not use any other intravenous fluids for flushing.

3.       Dosage Forms And Strengths

For injection: 2 mg of pivekimab sunirine-pvzy as a white to off-white, lyophilized cake in a single-dose vial.

4.       Contraindications

None.

5.1       Hepatotoxicity, Including Hepatic Veno-Occlusive Disease (Vod) (Also Known As Sinusoidal Obstruction Syndrome)

DECNUPAZ can cause hepatotoxicity, including VOD, a severe form of hepatotoxicity. In CADENZA, VOD occurred in 6% (7/116) of adult patients during treatment or following a subsequent hematopoietic stem cell transplantation (HSCT). Of the 7 total patients who developed VOD, 3 patients had treatment-naïve BPDCN and 4 patients had relapsed/refractory BPDCN. Among all 116 patients treated with DECNUPAZ at 0.045 mg/kg, VOD occurred in 2/116 (2%) during treatment, with onset up to 30 days after the last dose. Among 19 patients with BPDCN who proceeded to HSCT, VOD occurred in 5/19 patients (26%), including two fatal cases. The median time from subsequent HSCT to onset of VOD was 11 days (range: 7 – 25 days).

After receiving DECNUPAZ, patients should be closely monitored for signs and symptoms of VOD including elevations in ALT, AST, total bilirubin, hepatomegaly (which may be painful), rapid weight gain, and ascites. Monitor liver tests, including ALT, AST, and total bilirubin, prior to each dose of DECNUPAZ. Based on elevations of liver tests, delay DECNUPAZ. In patients who experience VOD, discontinue DECNUPAZ and treat according to standard medical practice [see Dosage and Administration (2.4)].

5.3       Edema

DECNUPAZ can cause edema and fluid retention, including serious events. In CADENZA, Grade 3-4 edema occurred in 16% (18/116) of patients treated with DECNUPAZ, including Grade 3-4 generalized edema in 2.6% (3/116) of patients [see Adverse Reactions (6.1)]. 

Monitor patients for new or worsening edema. For Grade 2 or Grade 3 edema, delay further dosing of DECNUPAZ until edema has returned to Grade 0-1 or baseline. For Grade 3 edema or Grade 2 edema with dose delay for more than 2 weeks, consider resuming at a lower dose. For Grade 4 edema, permanently discontinue. Institute appropriate medical management for edema [see Dosage and Administration (2.4)].

5.4       Sulfite Allergic Reactions

DECNUPAZ contains sodium metabisulfite, a sulfite that may cause allergic type reactions, including anaphylactic symptoms and life-threatening or less severe asthmatic episodes in certain susceptible people. The overall prevalence of sulfite sensitivity in the general population is unknown and probably low. Sulfite sensitivity is seen more frequently in asthmatic than in non-asthmatic people.

5.5       Embryo-Fetal Toxicity

Based on its mechanism of action, DECNUPAZ can cause embryo-fetal harm when administered to a pregnant woman because it contains a genotoxic compound (FGN849) and affects actively dividing cells [see Clinical Pharmacology (12.1), Nonclinical Toxicology (13.1)].

Advise patients of the potential risk to the fetus. Advise females of reproductive potential to use effective contraception during treatment with DECNUPAZ and for 7 months after the last dose. Advise male patients with female partners of reproductive potential to use effective contraception during treatment with DECNUPAZ, and for 4 months after the last dose [see Use in Specific Populations (8.1, 8.3)].

6.       Adverse Reactions

The following clinically significant adverse reactions are discussed elsewhere in the labeling:

  • Hepatotoxicity, Including Hepatic VOD (also known as Sinusoidal Obstruction Syndrome) [see Warnings and Precautions (5.1)]
  • Infusion-Related Reactions [see Warnings and Precautions (5.2)]
  • Edema [see Warnings and Precautions (5.3)]

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.

The safety of DECNUPAZ was evaluated in CADENZA, a single-arm, open-label study that included 116 adults with newly diagnosed or relapsed/refractory myeloid malignancies, including 84 with BPDCN, treated with DECNUPAZ 0.045 mg/kg once every three weeks.

The median number of cycles administered was 3 (range: 1 to 34) in the overall population, and 3.5 (range: 1 to 34) in patients with BPDCN.

Serious adverse reactions occurred in 55% of patients treated with DECNUPAZ. The most common (≥2%) serious adverse reactions were febrile neutropenia, pneumonia, edema, sepsis, hemorrhage, thrombosis, infusion-related reactions, viral infection, pneumonitis, infections without specified pathogens, pyrexia, and musculoskeletal pain. Fatal adverse reactions occurred in 4.3% of patients who received DECNUPAZ, including cardiac arrest (0.9%), clostridium difficile infection (0.9%), failure to thrive (0.9%), depressed level of consciousness (0.9%), and respiratory failure (0.9%).

Permanent discontinuation due to adverse reactions occurred in 10% of patients who received DECNUPAZ. Adverse reactions which resulted in permanent discontinuation of DECNUPAZ in ≥1% of patients included veno-occlusive disease and pneumonitis.

Dosage interruptions of DECNUPAZ due to adverse reactions occurred in 37% of patients. Adverse reactions which resulted in dosage interruptions in ≥2% of patients included edema, pneumonia, infusion-related reaction, bacterial infections, fatigue, hemorrhage, neutropenia, pneumonitis, and pyrexia.

Dose reductions of DECNUPAZ due to an adverse reaction occurred in 6% of patients. Adverse reactions which required dose reductions in ≥2% of patients included edema. 

The most common adverse reactions (≥20%) were edema, fatigue, musculoskeletal pain, hemorrhage, infusion-related reactions, nausea, and diarrhea. The most common Grade 3 to 4 laboratory abnormalities (≥10%) were neutrophils decreased, platelets decreased, lymphocyte count decreased, white blood cells decreased, hemoglobin decreased, and glucose increased.

Table 3 summarizes the common adverse reactions (≥10%) in patients treated with DECNUPAZ in CADENZA.

Table 3. Adverse Reactions (≥10%) in Patients Who Received DECNUPAZ in CADENZA
DECNUPAZ
(N=116)
Adverse Reaction§All Grades
(%)
Grade 3 or 4 
(%)
General disorders and administration site conditions
Edemaa 52 16
Fatigueb 345
Pyrexiab160.9
Chills110
Musculoskeletal and connective tissue disorders
Musculoskeletal painb348
Vascular disorders
Hemorrhageb286
Thrombosisb135
Injury, poisoning and procedural complications
Infusion-related reactions265
Fall131.7
Gastrointestinal disorders
Nauseab240.9
Diarrheab210.9
Constipation190
Abdominal painb140.9
Respiratory, thoracic and mediastinal disorders
Dyspneab19 1.7
Coughb150
Skin and subcutaneous tissue disorders
Rashc190
Nervous system disorders
Neuropathy peripherald181.7
Headacheb162.6
Dizzinessb100.9
Metabolism and nutrition disorders
Decreased appetiteb160.9
Infections and infestations
Infections without specified pathogensb166
Viral infectionse136
Bacterial infectionsf125
Pneumoniag119
Psychiatric disorders
Insomnia150
Blood and lymphatic system disorders
Febrile neutropenia1111

§ Adverse reactions were graded based on CTCAE Version 4.03

a. Edema includes acute pulmonary edema, face edema, generalized edema, hypervolemia, edema, edema genital, edema peripheral, pericardial effusion, peripheral swelling, pleural effusion, pulmonary edema, swelling face, weight increased, ascites.

b. Consists of multiple related terms.

c. Rash includes erythema, erythema nodosum, guttate psoriasis, photosensitivity reaction, psoriasis, rash, rash erythematous, rash macular, rash maculo-papular, rash pruritic, skin lesion, skin lesion inflammation, stasis dermatitis.

d. Neuropathy peripheral includes burning sensation, dysesthesia, facial nerve disorder, hypoesthesia, IIIrd nerve disorder, neuralgia, neuropathy peripheral, paresthesia, sciatica.

e. Viral infections includes COVID-19, cytomegalovirus infection, HCoV-229E infection, herpes simplex, herpes zoster, herpes zoster disseminated, influenza, ophthalmic herpes simplex, oral herpes.

f. Bacterial infections includes cellulitis, clostridium difficile infection, erysipelas, folliculitis, vulval abscess.

g. Pneumonia includes pneumocystis jirovecii pneumonia, pneumonia, pneumonia viral.

Clinically relevant adverse reactions occurring in <10% of patients who received DECNUPAZ in CADENZA included:

Vascular disorders: capillary leak syndrome (9%)a, hypotensionb (7%)

Gastrointestinal disorders: stomatitisb (6%)

Infections and infestations: sepsisc (7%), fungal infectionsd (5%)

Respiratory, thoracic and mediastinal disorders: pneumonitis (5%)

Cardiac disorders: arrhythmiae (6%)

Renal and urinary disorders: acute kidney injuryb (6%)

Hepatobiliary disorders: veno-occlusive disease (1.7%)

a. At least 2 of the following new onset signs and symptoms within 7 days of each other: hypoalbuminemia (including albumin <3.0 g/dL), edema (including weight increase >5 kg), hypotension (including systolic blood pressure <90 mmHg). 

b. Consists of multiple related terms.

c. Includes bacteremia, klebsiella bacteremia, pulmonary sepsis, sepsis, and streptococcal bacteremia.

d. Includes candida infection, fungal balanitis, fungal foot infection, fungal skin infection.

e. Includes arrhythmia, atrial fibrillation, atrioventricular block, bradycardia, cardiac arrest, tachyarrhythmia.

Table 4 summarizes laboratory abnormalities in CADENZA.

Table 4. Select Laboratory Abnormalities (≥10%) That Worsened from Baseline in Patients Who Received DECNUPAZ in CADENZA
Laboratory Abnormality* DECNUPAZa
All Grades
(%)
Grade 3 or 4
(%)
Chemistry
Creatinine increased760
Glucose increased5310
Albumin decreased501.8
Phosphate decreased 398
Calcium decreased341.8
Alanine aminotransferase increased324.4
Aspartate aminotransferase increased290.9
Sodium decreased281.8
Potassium decreased263.5
Alkaline phosphatase increased200.9
Magnesium decreased 180
Bilirubin increased160.9
Hematology
Platelets decreased 6440
Neutrophils decreased6345
Lymphocyte count decreased6239
White blood cells decreased5534
Hemoglobin decreased4020

* Laboratory abnormalities were graded based on CTCAE Version 4.03.

a The denominator used to calculate the rate varied from 78 to 114 based on the number of patients with at least one post-baseline value.

7.1       Effect Of Other Drugs On Decnupaz

Strong and moderate CYP3A inhibitors

Closely monitor patients for adverse reactions with DECNUPAZ when used concomitantly with strong and moderate CYP3A inhibitors.

FGN849 is a substrate of CYP3A [see Clinical Pharmacology (12.3)]. Concomitant use of DECNUPAZ with strong and moderate CYP3A inhibitors may increase unconjugated FGN849 exposure, which may increase the risk of DECNUPAZ adverse reactions.  

8.1       Pregnancy

Risk Summary

Based on its mechanism of action, DECNUPAZ can cause embryo-fetal harm when administered to a pregnant woman because it contains a genotoxic compound (FGN849) and affects actively dividing cells [see Clinical Pharmacology (12.1), Nonclinical Toxicology (13.1)]. There are no available data on the use of DECNUPAZ in pregnant women to inform a drug-associated risk. Advise patients of the potential risks to a fetus.

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

Animal reproductive or developmental toxicity studies were not conducted with pivekimab sunirine-pvzy. The cytotoxic component of DECNUPAZ, FGN849, is a DNA-alkylating agent that is toxic to rapidly dividing cells, indicating it has the potential to cause embryofetal lethality and teratogenicity.

8.2       Lactation

Risk Summary

There are no data on the presence of pivekimab sunirine-pvzy or its metabolites in human milk, the effects on the breastfed child, or the effects on milk production. Because of the potential for serious adverse reactions in breastfed children, advise women not to breastfeed during treatment with DECNUPAZ and for 1 month after the last dose.

8.3       Females And Males Of Reproductive Potential

DECNUPAZ can cause fetal harm when administered to a pregnant patient [see Use in Specific Populations (8.1)].

Pregnancy Testing

Verify pregnancy status in females of reproductive potential prior to initiation of DECNUPAZ.

Contraception

Females

Advise females of reproductive potential to use effective contraception during treatment with DECNUPAZ and for 7 months after the last dose.

Males

Because of the potential for genotoxicity, advise males with female partners of reproductive potential to use effective contraception during treatment with DECNUPAZ and for 4 months after the last dose [see Nonclinical Toxicology (13.1)].

Infertility

Based on its mechanism of action, DECNUPAZ may impair male and female reproductive function and fertility.

8.4       Pediatric Use

The safety and effectiveness of DECNUPAZ have not been established in pediatric patients.

8.5       Geriatric Use

Of the 116 patients who were treated in CADENZA, 70% of patients were ≥65 years of age and 28% were ≥75 years of age. No overall differences in safety or effectiveness of DECNUPAZ have been observed between patients 65 years of age and older and younger adult patients.

Age does not have a clinically meaningful effect on the pharmacokinetics of DECNUPAZ [see Clinical Pharmacology (12.3)].

8.6       Renal Impairment

Avoid use of DECNUPAZ in patients with moderate to severe renal impairment (CLcr <60 mL/min, estimated by Cockcroft-Gault) or patients with end stage renal disease. A higher incidence of Grade ≥3 adverse events, serious adverse events, and dose delays was observed in patients with moderate renal impairment (CLcr 30 to <60 mL/min). DECNUPAZ has not been studied in patients with severe renal impairment (CLcr <30 mL/min) or end stage renal disease. 

No dosage adjustment of DECNUPAZ is recommended for patients with mild renal impairment (CLcr 60 to <90 mL/min, estimated by Cockcroft-Gault) [see Clinical Pharmacology (12.3)].

8.7       Hepatic Impairment

Avoid use of DECNUPAZ in patients with moderate to severe hepatic impairment (total bilirubin >1.5 x ULN with any AST). Limited data are available in patients with moderate hepatic impairment (total bilirubin >1.5 to 3 times ULN and any AST). DECNUPAZ has not been studied in patients with severe hepatic impairment.

No dosage adjustment of DECNUPAZ is recommended for patients with mild hepatic impairment (total bilirubin ≤ULN and AST >ULN or total bilirubin ≤1.5 times ULN and any AST) [see Clinical Pharmacology (12.3)].

11.       Description

Pivekimab sunirine-pvzy is a CD123-directed antibody and alkylating agent conjugate created by conjugating the IgG1 monoclonal antibody G4723A to the DGN549C linker-payload. The antibody-drug conjugate (ADC) contains approximately two DGN549C molecules sulfonated prior to conjugation and bound to the heavy chains (HC) of the G4723A antibody. Pivekimab sunirine-pvzy has an approximate molecular weight of 148 kDa. Pivekimab sunirine-pvzy is produced by site directed chemical conjugation of the antibody and small molecule components. The antibody is produced by mammalian (Chinese hamster ovary) cells, and the small molecule components are produced by chemical synthesis.

Pivekimab sunirine-pvzy has the following structure:

Pivekimab Sunirine-pvzy Has The Following Structure: (Pivekimab Sunirine Pvek 01)

Pivekimab Sunirine-pvzy Has The Following Structure: (Pivekimab Sunirine Pvek 01)



DECNUPAZ (pivekimab sunirine-pvzy) for injection is a sterile, lyophilized cake in a single-dose vial for reconstitution and dilution. DECNUPAZ is supplied as 2 mg per vial and requires reconstitution with Sterile Water for Injection, USP (1.1 mL) to obtain a concentration of 2 mg/mL. Following reconstitution, each mL delivers 2 mg of pivekimab sunirine-pvzy, methionine (0.45 mg), polysorbate 20 (0.1 mg), sodium hydroxide (0.2 mg), sodium metabisulfite (0.0048 mg), succinic acid (1.2 mg), trehalose (71.7 mg), and Sterile Water for Injection. The pH is 4.2.  

12.1       Mechanism Of Action

Pivekimab sunirine-pvzy is a CD123 (alpha-subunit of the interleukin-3 receptor)-directed antibody-drug conjugate (ADC). The antibody is a humanized anti-CD123 IgG1. Pivekimab sunirine-pvzy binds to CD123 expressing cells and upon intracellular processing releases a cell membrane-permeable payload, FGN849, leading to DNA alkylation, single-strand DNA breaks, apoptosis, and cell death. The payload, FGN849, is a member of the indolinobenzodiazepine pseudodimer (IGN) class of cytotoxic molecules. Pivekimab sunirine-pvzy exhibited antitumor activity in in vitro and in vivo models of BPDCN.

12.2       Pharmacodynamics

Exposure-Response Relationships

Higher FGN849 (cytotoxic component of DECNUPAZ) exposure was associated with increased rates of Grade ≥2 infusion-related reactions.

Cardiac Electrophysiology

There is insufficient information to characterize the effect of pivekimab sunirine-pvzy on the QTc interval.

In 116 patients who received DECNUPAZ 0.045 mg/kg once every 3 weeks in CADENZA, 0.9% of patients had QTcF greater than 500 ms.

12.3       Pharmacokinetics

Pivekimab sunirine-pvzy and FGN849 pharmacokinetics were observed at Cycle 1 in patients in CADENZA at the approved recommended dosage and are presented as mean (CV%), unless otherwise specified. The exposure parameters of pivekimab sunirine-pvzy (ADC) and unconjugated FGN849 are summarized in Table 5. The Cmax and AUC of the ADC increased more than proportionally over a dose range of 0.045 to 0.18 mg/kg (the approved recommended dose to 4 times the recommended dose). ADC time to maximum concentrations (Tmax) occurred approximately at the end of the infusion, while FGN849 Tmax occurred approximately 2 hours after the end of infusion. There was no accumulation of the ADC or FGN849 in Cycle 3.

Table 5. Cycle 1 Exposure parameters of pivekimab sunirine-pvzy and unconjugated FGN849 at DECNUPAZ 0.045 mg/kg Every 3 Weeks
Pivekimab sunirine-pvzy
Geometric mean (%CV)
Unconjugated FGN849
Geometric mean (%CV)
Cmax442 (169) ng/mL 58.8 (110) pg/mL
AUClast892 (101) ng•h/mL171 (128) pg•h/mL

Cmax=maximum concentration, AUClast=area under the concentration from time zero to the last quantifiable concentration

Distribution

Pivekimab sunirine-pvzy volume of distribution is 5.4 L (39).

FGN849 plasma protein binding is 99.6% in vitro.

Elimination

Pivekimab sunirine-pvzy elimination half-life is approximately 1.5 hours at the 0.045 mg/kg every 3 weeks dosage. 

Pivekimab sunirine-pvzy clearance is 1.8 L/hour (76). 

Metabolism

Pivekimab sunirine-pvzy is expected to be catabolized into small peptides and amino acids. FGN849 is primarily metabolized by CYP3A.

Specific Populations

No clinically significant differences in the pharmacokinetics of pivekimab sunirine-pvzy or FGN849 were observed for age (19 to 91 years), body weight (45 to 160 kg), mild hepatic impairment (total bilirubin >ULN to 1.5 times ULN and any AST), or CLcr 60 to <90 mL/min (estimated by Cockcroft-Gault). Higher pivekimab sunirine-pvzy exposure and lower FGN849 exposure were observed in female patients compared to those in male patients.

The pharmacokinetics of pivekimab sunirine-pvzy in patients with moderate to severe hepatic impairment (total bilirubin >1.5 times ULN with any AST) or CLcr <60 mL/min is unknown. 

Drug Interaction Studies

No dedicated clinical studies evaluating the drug-drug interaction potential of pivekimab sunirine-pvzy have been conducted.

In Vitro Studies

Cytochrome P450 (CYP) Enzymes: FGN849 is primarily a CYP3A substrate but is not a significant substrate of CYP1A2, CYP2B6, CYP2C8, CYP2C9, CYP2C19, or CYP2D6. FGN849 is an inhibitor of CYP3A and CYP2C8 but is not an inhibitor of CYP1A2, CYP2B6, CYP2C9, CYP2C19, or CYP2D6.

Transporter systems: FGN849 is a substrate of P-gp and BCRP but is not a substrate of MATE1, MATE2-K, OAT1, OAT3, OATP1B1, OATP1B3, or OCT2. FGN849 is not an inhibitor of P-gp, BCRP, MATE1, MATE2-K, OAT1, OAT3, OATP1B1, OATP1B3, or OCT2.

12.6       Immunogenicity

The observed incidence of anti-drug antibodies (ADA) is highly dependent on the sensitivity and specificity of the assay. Differences in assay methods preclude meaningful comparisons of the incidence of ADA in the study described below with the incidence of ADA in other studies, including those of pivekimab sunirine-pvzy.

Following administration of pivekimab sunirine-pvzy in CADENZA in BPDCN patients, 19/80 (24%) of patients tested positive for treatment emergent antibodies against pivekimab sunirine-pvzy. Of those who tested positive for anti-drug antibody, neutralizing antibodies were detected in 14/18 (78%) of evaluable patients. There was no identified clinically significant effect of anti-drug antibodies on pharmacokinetics, safety, or effectiveness of pivekimab sunirine-pvzy.

13.1       Carcinogenesis, Mutagenesis, Impairment Of Fertility

Carcinogenesis

Carcinogenicity studies have not been conducted with pivekimab sunirine-pvzy or the small molecule FGN849.

Mutagenesis

FGN849 was mutagenic in the bacterial reverse mutation (Ames) assay and clastogenic in the in vitro and in vivo (rat) micronucleus assays. These results are consistent with the pharmacological mechanism of action of DNA alkylation that induces G2-M phase arrest of dividing cells resulting in cell death.

Impairment of Fertility

Fertility studies have not been conducted with pivekimab sunirine-pvzy or FGN849.

14.1       Treatment-Naïve Blastic Plasmacytoid Dendritic Cell Neoplasm (Bpdcn)

CADENZA (NCT03386513) was a multicenter, open-label, single-arm, clinical trial that included 33 adult patients with treatment-naїve BPDCN with no central nervous system (CNS) involvement. Treatment consisted of DECNUPAZ 0.045 mg/kg intravenously once every three weeks. Patient baseline characteristics are presented in Table 6.

Table 6. Baseline Demographics of Patients with Treatment-naїve BPDCN
Parameter N=33
Gender, N (%)
   Male27 (82)
   Female6 (18)
Race, N (%)
   White27 (82)
   Black or African American1 (3)
   Not Reported5 (15)
Ethnicity, N (%)
   Hispanic or Latino4 (12)
   Non-Hispanic or Latino28 (85)
   Unknown1 (3)
Age (years)
   Median (Range) 73 (48, 84)
ECOG, N (%)
   012 (36)
   121 (64)
BPDCN at Baseline, N (%)
   Skin31 (94)
   Bone Marrow16 (48)
   Peripheral Blood3 (9)
   Lymph Nodes12 (36)
   Viscera0
Disease subgroup, N (%)
   BPDCN de novo22 (67)
   BPDCN with PCHMa11 (33)

aPCHM is defined as any previously diagnosed or concurrently present hematologic malignancy at the time of BPDCN diagnosis 

The efficacy of DECNUPAZ in patients with treatment-naїve BPDCN was based on the rate of complete remission or clinical complete remission (CR/CRc). Key efficacy measures are presented in Table 7. The median follow-up was 21.5 months (range: 4.2, 27). The median time to CR/CRc was 1.8 months (range: <0.5 to 4). Among the 33 patients with treatment-naїve BPDCN, 13 (39.4%) patients were able to receive post-study treatment HSCT.

Table 7. Efficacy Results in Patients with Treatment-naїve BPDCN
EndpointN=33
CR/CRca Rate, N (%)b,c23 (69.7)
(95% CI)(51.3, 84.4)
   CR, N (%)16 (48.5)
   (95% CI)(30.8, 66.5)
   CRc, N (%)7 (21.2)
   (95% CI)(9.0, 38.9)
Duration of CR/CRc (months)d,e,f 
   Median 9.7
   95% CI(2.9, NE)

CI = confidence interval; NE = not estimable

aCRc is defined as complete remission with residual skin abnormality not indicative of active disease.

bCR/CRc rate was 77.3% (95% CI: 54.6, 92.2) in patients with de novo BPDCN (N=22).

cCR/CRc rate was 54.5% (95% CI: 23.4, 83.3) in patients with PCHM (N=11).

dKaplan-Meier estimate.

eMedian duration of CR/CRc was 9.8 months (range: 0.9, 23.9+) in 17 patients with de novo BPDCN who achieved CR/CRc.

fMedian duration of CR/CRc was 6.3 months (range: 2.4, 23.2+) in 6 patients with BPDCN with PCHM who achieved CR/CRc.

14.2       Relapsed Or Refractory Blastic Plasmacytoid Dendritic Cell Neoplasm (Bpdcn)

CADENZA (NCT03386513) was a multicenter, open-label, single-arm, clinical trial that included 51 adult patients with relapsed or refractory BPDCN without evidence of active CNS disease treated with DECNUPAZ 0.045 mg/kg intravenously once every three weeks. Patient baseline characteristics are presented in Table 8.

Table 8. Baseline Demographics of Patients with Relapsed or Refractory BPDCN
Parameter N=51
Gender, N (%)
   Male42 (82)
   Female9 (18)
Race, N (%)
   White42 (82)
   Black or African American2 (4)
   Asian1 (2)
   Not Reported6 (12)
Ethnicity, N (%)
   Hispanic or Latino8 (16)
   Non-Hispanic or Latino38 (75)
   Unknown5 (10)
Age (years)
   Median (Range)69 (19, 85)
ECOG, N (%)
   018 (35)
   130 (59)
   22 (4)
   31 (2)
BPDCN at Baseline, N (%)
   Skin34 (67)
   Bone Marrow24 (47)
   Peripheral Blood10 (20)
   Lymph Nodes18 (35)
   Viscera3 (6)
Number of prior lines of therapy, median (Range)1 (1, 4) 
Prior stem cell transplantation, N (%)16 (31) 

The efficacy of DECNUPAZ in patients with relapsed/refractory BPDCN was based on the rate of CR/CRc. Key efficacy measures are presented in Table 9. The median follow-up was 24.1 months (range: 0.2 to 30.4). The median time to CR/CRc was 1.7 months (range: 1 to 6). Among the 51 patients with relapsed/refractory BPDCN, 6 (11.8%) patients were able to receive post-study treatment HSCT.

Table 9. Efficacy Results in Patients with Relapsed or Refractory BPDCN
EndpointN=51
CR/CRca Rate, N (%)8 (15.7)
(95% CI)(7.0, 28.6)
   CR, N (%)7 (13.7)
   (95% CI)(5.7, 26.3)
   CRc, N (%)1 (2.0)
   (95% CI)(0.1, 10.5)
Duration of CR/CRc (months)b 
   Median9.2
   Range(2.7, 27.6+)

CI = confidence interval; + = Censor indicator

aCRc is defined as complete remission with residual skin abnormality not indicative of active disease.

bKaplan-Meier estimate.

16.       How Supplied/Storage And Handling

How Supplied

DECNUPAZ (pivekimab sunirine-pvzy) for injection is a sterile, preservative-free, white to off-white lyophilized cake, supplied in a single-dose glass vial. The DECNUPAZ vial stoppers are not made with natural rubber latex.

  • 2 mg single-dose vial with dark grey flip-top (NDC 0074-0282-02)
  • Storage and Handling

    Store DECNUPAZ vials upright in a refrigerator at 2°C to 8°C (36°F to 46°F) until time of preparation in the original carton to protect from light.

    Do not freeze or shake.

    DECNUPAZ is a hazardous product. Follow applicable special handling and disposal procedures1.

17.       Patient Counseling Information

Advise the patient to read the FDA-approved patient labeling (Medication Guide).

Veno-occlusive Disease (VOD)

Advise patients that DECNUPAZ can cause VOD. Advise patients to immediately contact their healthcare provider if they experience symptoms of VOD, which may include jaundice, rapid weight gain, dark urine, and abdominal pain or distention. Inform patients that liver problems may require dosing interruption or permanent discontinuation of DECNUPAZ [see Warnings and Precautions (5.1)].

Infusion-Related Reactions

Advise patients that DECNUPAZ can cause infusion-related reactions. Advise patients to immediately contact their healthcare provider for any signs or symptoms of infusion-related reactions, which may include chills, tachycardia, hypotension, fever, tachypnea, and dyspnea [see Warnings and Precautions (5.2)].

Edema

Advise patients that DECNUPAZ can cause edema. Advise patients to contact their healthcare provider if they experience swelling, weight gain, shortness of breath or difficulty breathing, or fluid retention [see Warnings and Precautions (5.3)].

Sulfite Allergic Reactions

Advise patients about potential for sulfite sensitivity. Inform patients that DECNUPAZ contains sodium metabisulfite, which may cause allergic type reactions including anaphylactic symptoms and life-threatening or less severe asthmatic episodes, and to seek immediate medical care if they experience these signs or symptoms [see Warnings and Precautions (5.4)].

Embryo-Fetal Toxicity

Advise females of reproductive potential of the potential risk to a fetus. Advise female patients to contact their healthcare provider if they become pregnant, or if pregnancy is suspected, during treatment with DECNUPAZ [see Warnings and Precautions (5.5) and Use in Specific Populations (8.1)].

Advise females of reproductive potential to use effective contraception during treatment with DECNUPAZ and for 7 months after the last dose [see Use in Specific Populations (8.3)].

Advise males with female partners of reproductive potential to use effective contraception during treatment with DECNUPAZ and for 4 months after the last dose [see Use in Specific Populations (8.3)].

Infertility

Advise females and males of reproductive potential that DECNUPAZ may impair reproductive function and fertility [see Use in Specific Populations (8.3)].

Lactation

Advise women not to breastfeed during treatment and for 1 month after the last dose of DECNUPAZ [see Use in Specific Populations (8.2)].

Manufactured by:

AbbVie Inc.
North Chicago, IL 60064, U.S.A.
U.S. License No. 1889
© 2026 AbbVie. All rights reserved.
DECNUPAZ and its design are trademarks of ImmunoGen, Inc., an AbbVie company.

20098137

Principal Display Panel

NDC 0074-0282-02

DecnupazTM 

pivekimab sunirine-pvzy

for injection

2 mg per vial

WARNING: Hazardous Drug

For intravenous infusion after

reconstitution and two dilutions

1 Single-dose Vial

Discard Unused Portion

Dispense the enclosed Medication

Guide to each patient

Rx Only

abbvie

Principal Display Panelndc 0074-0282-02decnupaztm Pivekimab Sunirine-pvzyfor Injection2 mg Per Vialwarning: Hazardous Drugfor Intravenous Infusion Afterreconstitution And Two Dilutions1 Single-dose Vialdiscard Unused Portiondispense The Enclosed Medicationguide To Each Patientrx Onlyabbvie (Pivekimab Sunirine Pvek 02)

Principal Display Panelndc 0074-0282-02decnupaztm Pivekimab Sunirine-pvzyfor Injection2 mg Per Vialwarning: Hazardous Drugfor Intravenous Infusion Afterreconstitution And Two Dilutions1 Single-dose Vialdiscard Unused Portiondispense The Enclosed Medicationguide To Each Patientrx Onlyabbvie (Pivekimab Sunirine Pvek 02)

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