Pombiliti

— THERAPEUTIC CATEGORIES —
  • Inborn errors of metabolism

Pombiliti Generic Name & Formulations

General Description

Cipaglucosidase alfa-atga 105mg/vial; lyophilized pwd for IV infusion after reconstitution and dilution; preservative-free.

Pharmacological Class

Hydrolytic lysosomal glycogen-specific enzyme.

How Supplied

Single-dose vial—1, 10, 25

Storage

Store refrigerated at 2°C to 8°C (36°F to 46°F) in the original carton to protect from light. Do not freeze.

Manufacturer

Generic Availability

NO

Mechanism of Action

Cipaglucosidase alfa-atga provides an exogenous source of GAA. The bis-M6P on cipaglucosidase alfa-atga mediates binding to M6P receptors on the cell surface with high affinity. After binding, it is internalized and transported into lysosomes where it undergoes proteolytic cleavage and N-glycans trimming which are both required to yield the most mature and active form of GAA. Cipaglucosidase alfa-atga then exerts enzymatic activity in cleaving glycogen. Miglustat binds with, stabilizes, and reduces inactivation of cipaglucosidase alfa-atga in the blood after infusion.

Pombiliti Indications

Indications

In combination with Opfolda, for adults with late-onset Pompe disease (lysosomal acid alpha-glucosidase [GAA] deficiency) weighing ≥40kg and who are not improving on their current enzyme replacement therapy (ERT).

Pombiliti Dosage and Administration

Prior to Treatment Evaluations

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

Adult

Consider premedication with antihistamines, antipyretics, and/or corticosteroids prior to initiation; if used with previous ERT, then should premedicate. Start in combination with Opfolda 2 weeks after the last ERT dose. Initiate infusion ~1hr after and within 3hrs of Opfolda administration. Give by IV infusion over ~4hrs. 20mg/kg every other week. Initial infusion rate: 1mg/kg/hr; may gradually increase by 2mg/kg/hr every 30mins, if tolerated, to max 7mg/kg/hr. Dosage and administration modifications, others: see full labeling.

Children

Not established.

Other Modifications

Modifications Due to Hypersensitivity Reactions and/or Infusion-Associated Reactions

If severe hypersensitivity reaction (eg, anaphylaxis) or a severe infusion-associated reaction (IAR) occurs immediately discontinue treatment with Pombiliti, and initiate appropriate medical treatment.

If mild to moderate hypersensitivity reaction or moderate IAR occurs, consider temporarily holding or slowing the infusion rate and initiate appropriate medical treatment. 

  • If symptoms persist despite holding or slowing the infusion, then stop the infusion for 30 to 60 minutes - monitor and consider resuming the infusion at a reduced rate if symptoms have improved. If symptoms still persist, discontinue the infusion, and consider restarting the infusion within 7 to 14 days.

  • If symptoms subside after holding or slowing the infusion, increase the infusion rate to the rate when the reaction occurred and consider continuing to increase the rate (every 30 minutes) in a stepwise manner to the target infusion rate. Monitor closely.

Administration

Inspect the infusion bag for foaming prior to administering. If foaming is present, let foam dissipate before administering. If diluted solution has been refrigerated, allow the solution to equilibrate to room temperature for 30 minutes prior to infusion.

Administer with an inline low protein binding 0.2-micron filter; change filter if it becomes blocked.

Initiate the infusion approximately 1 hour after oral administration of Opfolda. If infusion with Pombiliti was delayed, the starting infusion time should not exceed 3 hours from the oral administration of Opfolda.

Initial recommended infusion rate is 1mg/kg/hour; then gradually increase the infusion rate by 2mg/kg/hour every 30 minutes if no signs of hypersensitivity or IARs until a maximum rate of 7mg/kg/hour is reached; then maintain the infusion rate at 7mg/kg/hour until complete. Approximate total infusion duration is 4 hours.

Recommended Pombiliti infusion volumes and rates by patients weight: see full labeling.

Pombiliti Contraindications

Contraindications

Pregnancy.

Pombiliti Boxed Warnings

Boxed Warning

Severe hypersensitivity reactions or infusion-associated reactions. Risk of acute cardiorespiratory failure in susceptible patients.

Pombiliti Warnings/Precautions

Warnings/Precautions

Must be administered in combination with Opfolda (see full labeling). Have appropriate medical support and resuscitative equipment readily available. Discontinue immediately and treat appropriately if severe hypersensitivity reaction (eg, anaphylaxis) or severe infusion-associated reactions (IARs) occurs; may rechallenge using slower infusion rates. Withhold temporarily or slow the infusion rate if mild or moderate hypersensitivity reactions or moderate IARs occur. Increased risk for IARs in patients with an acute underlying illness or severe complications from IARs in those with advanced Pompe disease. Fluid volume overload, acute underlying respiratory illness, or compromised cardiac/respiratory function (with fluid restriction): risk for acute cardiorespiratory failure; monitor vitals frequently. May impair fertility. Embryo-fetal toxicity. Exclude pregnancy status prior to initiation. Advise females of reproductive potential to use effective contraception during and for at least 60 days after the last dose. Nursing mothers: not recommended. 

Pregnancy Considerations

Risk Summary

  • Pombiliti in combination with Opfolda is contraindicated for use during pregnancy. May cause embryo-fetal harm when administered to a pregnant female.

Nursing Mother Considerations

Advise females that breastfeeding is not recommended while on treatment with Pombiliti in combination with Opfolda. No data on the presence of cipaglucosidase alfa-atga, alone or in combination with miglustat, in human milk, the effects on the breastfed infant, or the effects on milk production.

Pediatric Considerations

Safety and efficacy have not been established.

Other Considerations for Specific Populations

Females and Males of Reproductive Potential

Pregnancy Testing: Verify pregnancy status prior to initiation.

Contraception: Advise females of reproductive potential to use effective contraception during and for at least 60 days after the last dose.

Pombiliti Pharmacokinetics

Absorption

Maximum serum concentration (in combination with Opfolda): 345 mcg/mL. Plasma concentration-time curve (AUC0-inf) (in combination with Opfolda): 1812 mcg*h/mL.

Distribution

Volume of distribution: ranged from 2.0–4.7 L.

Metabolism

Catabolic pathways.

Elimination

Mean total body clearance: 0.8 L/hr. Half-life: 2.1 hours.

Pombiliti Interactions

Not Applicable

Pombiliti Adverse Reactions

Adverse Reactions

Headache, diarrhea, fatigue, nausea, abdominal pain, pyrexia; hypersensitivity reactions, IARs.

Pombiliti Clinical Trials

Clinical Trials

The approval was based on data from the double-blind, active-controlled, phase 3 PROPEL trial (ClinicalTrials.gov Identifier: NCT03729362), which included 123 adults with late-onset Pompe disease who still had the ability to walk and breathe without mechanical ventilation. Patients were randomly assigned 2:1 to receive either cipaglucosidase alfa-atga plus miglustat or alglucosidase alfa, an enzyme replacement therapy. The primary endpoint was the change from baseline in 6-minute walk distance (6MWD) at week 52.

Results showed that patients treated with cipaglucosidase alfa-atga plus miglustat walked on average 21 meters farther from baseline compared with 8 meters for those treated with alglucosidase alfa (treatment difference, 14 meters [95% CI, -1, 28]). Among ERT-experienced patients, the cipaglucosidase alfa-atga plus miglustat arm experienced a numerically favorable change in 6MWD at week 52 (nominal =.047). 

Pombiliti Note

Not Applicable

Pombiliti Patient Counseling

Patient Counseling

Hypersensitivity Reactions (Including Anaphylaxis) and Infusion-Associated Reactions (IARs): Advise patients that infusion reactions may occur during and after treatment, including anaphylactic reactions, other serious or severe hypersensitivity reactions, and IARs. Seek medical care if signs and symptoms of hypersensitivity reactions and IARs occur.

Risk of Acute Cardiorespiratory Failure: Advise patients that there may be an increased risk of acute cardiorespiratory failure from volume overload in patients with underlying respiratory illness or compromised cardiac or respiratory function.

Embryo-Fetal Toxicity: May cause embryo-fetal harm. Inform health care provider if a female patient is known or suspected to be pregnant. Advise females of reproductive potential to use effective contraception during treatment and for at least 60 days after the last dose.

Lactation and Infertility: Advise lactating females not to breastfeed during treatment. Treatment in males or females of reproductive potential may impair fertility.

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