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Dactinomycin for injection is an actinomycin indicated for the treatment of: adult and pediatric patients with Wilms tumor, as part of a multi-phase, combination chemotherapy regimen. ( 1.1 ) adult and pediatric patients with rhabdomyosarcoma, as part of a multiphase, combination chemotherapy regimen. ( 1.2 ) adult and pediatric patients with Ewing sarcoma, as part of a multi-phase, combination chemotherapy regimen. ( 1.3 ) adult and pediatric patients with metastatic, nonseminomatous testicular cancer, as part of a multi-phase, combination chemotherapy regimen. ( 1.4 ) post-menarchal patients with gestational trophoblastic neoplasia, as a single agent or as part of a combination chemotherapy regimen. ( 1.5 ) adult patients with locally recurrent or locoregional solid malignancies, as a component of palliative or adjunctive regional perfusion. ( 1.6 ) 1.1 Wilms Tumor Dactinomycin for injection is indicated for the treatment of adult and pediatric patients with Wilms tumor, as part of a multi-phase, combination chemotherapy regimen. 1.2 Rhabdomyosarcoma Dactinomycin for injection is indicated for the treatment of adult and pediatric patients with rhabdomyosarcoma, as part of a multi-phase, combination chemotherapy regimen. 1.3 Ewing Sarcoma Dactinomycin for injection is indicated for the treatment of adult and pediatric patients with Ewing sarcoma, as part of a multi-phase, combination chemotherapy regimen. 1.4 Metastatic Nonseminomatous Testicular Cancer Dactinomycin for …

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Secondary Malignancy or Leukemia: Increased risk of secondary malignancies following treatment. ( 5.1 ) Veno-occlusive Disease: Can cause severe or fatal VOD. Monitor for elevations in AST, ALT, total bilirubin, hepatomegaly, weight gain, or ascites. Consider delaying next dose. ( 5.2 ) Extravasation: Immediately interrupt the injection or infusion and apply ice. ( 2.7 , 5.3 ) Myelosuppression: Monitor blood cell counts before each cycle. Delay next dose if severe myelosuppression has not improved. ( 5.4 ) Immunizations: Vaccination with live viral vaccines is not recommended before or during treatment. ( 5.5 ) Severe Mucocutaneous Reactions: Discontinue treatment ( 5.6 ) Renal Toxicity: Monitor creatinine and electrolytes frequently. ( 5.7 ) Hepatotoxicity: Monitor transaminases, alkaline phosphatase and bilirubin prior to and during treatment. ( 5.8 ) Potentiation of Radiation Toxicity and Radiation Recall: Reduce dose by 50% during concomitant radiation. Use caution when administering within two months of radiation. ( 5.9 ) Embryo-fetal Toxicity: Can cause fetal harm. Advise patients of the potential risk to a fetus and to use effective contraception. ( 5.10 , 8.1 , 8.3 ) 5.1 Secondary Malignancy or Leukemia The risk of developing secondary malignancies, including leukemia, is increased following treatment with dactinomycin. 5.2 Veno-occlusive Disease Severe and fatal hepatic veno-occlusive disease (VOD) can occur with dactinomycin. Risk factors for the development of VOD …

8.1 Pregnancy Risk Summary Based on findings from animal studies and its mechanism of action dactinomycin can cause fetal harm when administered to a pregnant woman [see Clinical Pharmacology (12.1) ] . In animal reproduction studies, administration of dactinomycin to pregnant animals during the period of organogenesis was teratogenic, resulting in malformations at doses lower than the recommended human dose (see Data) . Advise pregnant women of the potential risk to a fetus [see Use in Special Populations (8.3) ]. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, …