Yondelis Dosage

Generic name: Trabectedin 0.05mg in 1mL
Dosage form: injection, powder, lyophilized, for solution
Drug class: Alkylating agents

Medically reviewed by Drugs.com. Last updated on Sep 12, 2024.

Recommended Dosage

The recommended dose is 1.5 mg/m2 administered as an intravenous infusion over 24 hours through a central venous line every 21 days (3 weeks), until disease progression or unacceptable toxicity.

Hepatic Impairment: The recommended dose is 0.9 mg/m2 in patients with moderate hepatic impairment (bilirubin levels greater than 1.5 times to 3 times the upper limit of normal, and AST and ALT less than 8 times the upper limit of normal). Do not administer YONDELIS to patients with severe hepatic impairment (bilirubin levels above 3 times the upper limit of normal, and any AST and ALT) [see Use in Specific Populations (8.6), Clinical Pharmacology (12.3)].

Premedication

Administer dexamethasone 20 mg intravenously 30 minutes prior to each dose of YONDELIS.

Dose Modifications for Adverse Reactions

Permanently discontinue YONDELIS for:

Persistent adverse reactions requiring a delay in dosing of more than 3 weeks.
Adverse reactions requiring dose reduction following YONDELIS administered at 1.0 mg/m2 for patients with normal hepatic function or at 0.3 mg/m2 for patients with pre-existing moderate hepatic impairment.
Severe liver dysfunction: bilirubin two times the upper limit of normal, and AST or ALT three times the upper limit of normal, and alkaline phosphatase less than two times the upper limit of normal in the prior treatment cycle for patients with normal liver function at baseline.
Exacerbation of liver dysfunction in patients with pre-existing moderate hepatic impairment.
Capillary leak syndrome.
Rhabdomyolysis.
Grade 3 or 4 cardiac adverse events (AEs) indicative of cardiomyopathy or for subjects with an LVEF that decreases below the lower limit of normal.

The recommended dose modifications for adverse reactions are listed in Table 1. Once reduced, the dose of YONDELIS should not be increased in subsequent treatment cycles.

Table 1: Recommended Dose Modification
Laboratory Result or Adverse Reaction	DELAY next dose of YONDELIS for up to 3 weeks	REDUCE next dose of YONDELIS by one dose level for adverse reaction(s) during prior cycle
Platelets	Less than 100,000 platelets/microliter	Less than 25,000 platelets/microliter
Absolute neutrophil count	Less than 1,500 neutrophils/microliter	Less than 1,000 neutrophils/microliter with fever/infection Less than 500 neutrophils/microliter lasting more than 5 days
Total bilirubin	Greater than the upper limit of normal	Greater than the upper limit of normal
Aspartate aminotransferase (AST) or alanine aminotransferase (ALT)	More than 2.5 times the upper limit of normal	More than 5 times the upper limit of normal
Alkaline phosphatase (ALP)	More than 2.5 times the upper limit of normal	More than 2.5 times the upper limit of normal
Creatine phosphokinase	More than 2.5 times the upper limit of normal	More than 5 times the upper limit of normal
Other non-hematologic adverse reactions	Grade 3 or 4	Grade 3 or 4

The recommended starting doses and dose reductions for YONDELIS are listed in Table 2:

Table 2: Recommended Starting Doses and Dose Reductions
Starting Dose and Dose Reduction	For patients with normal hepatic function or mild hepatic impairment* prior to initiation of YONDELIS treatment	For patients with moderate hepatic impairment† prior to initiation of YONDELIS treatment
* Including patients with bilirubin greater than 1 to 1.5 times the upper limit of normal, and any AST or ALT. † Including patients with bilirubin levels greater than 1.5 times to 3 times the upper limit of normal, and AST and ALT less than 8 times the upper limit of normal.
Starting Dose	1.5 mg/m2	0.9 mg/m2
Dose Reduction
First dose reduction	1.2 mg/m2	0.6 mg/m2
Second dose reduction	1.0 mg/m2	0.3 mg/m2

Preparation for Administration

YONDELIS is a cytotoxic drug. Follow applicable special handling and disposal procedures.1
Using aseptic technique, inject 20 mL of Sterile Water for Injection, USP into the vial. Shake the vial until complete dissolution. The reconstituted solution is clear, colorless to pale brownish-yellow, and contains 0.05 mg/mL of trabectedin.
Inspect for particulate matter and discoloration prior to further dilution. Discard vial if particles or discoloration are observed.
Immediately following reconstitution, withdraw the calculated volume of trabectedin and further dilute in 500 mL of 0.9% Sodium Chloride, USP or 5% Dextrose Injection, USP.
Do not mix YONDELIS with other drugs.
Discard any remaining solution within 30 hours of reconstituting the lyophilized powder.
YONDELIS diluted solution is compatible with Type I colorless glass vials, polyvinylchloride (PVC) and polyethylene (PE) bags and tubing, PE and polypropylene (PP) mixture bags, polyethersulfone (PES) in-line filters, titanium, platinum or plastic ports, silicone and polyurethane catheters, and pumps having contact surfaces made of PVC, PE, or PE/PP.

Administration

Infuse the reconstituted, diluted solution over 24 hours through a central venous line using an infusion set with a 0.2 micron polyethersulfone (PES) in-line filter to reduce the risk of exposure to adventitious pathogens that may be introduced during solution preparation.
Complete infusion within 30 hours of initial reconstitution. Discard any unused portion of the reconstituted product or of the infusion solution.