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Drug Safety-related Labeling Changes (SrLC)

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TOPOTECAN HYDROCHLORIDE (NDA-022453)

(TOPOTECAN HYDROCHLORIDE)

Safety-related Labeling Changes Approved by FDA Center for Drug Evaluation and Research (CDER)

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06/24/2019 (SUPPL-11)

Approved Drug Label (PDF)

4 Contraindications

(additions underlined)

Topotecan Injection is contraindicated in patients who have a history of severe hypersensitivity reactions to topotecan. Reactions have included anaphylactoid reactions.

5 Warnings and Precautions

5.1 Myelosuppression

(subsection revised, additions underlined)

Topotecan can cause severe myelosuppression.

 

Single Agent

Grade 4 neutropenia occurred in 78% of 879 patients, with a median duration of 7 days and was most common during Cycle 1 (58% of patients). Grade 4 neutropenia associated with infection occurred in 13% and febrile neutropenia occurred in 5%. Sepsis occurred in 4% of patients and was fatal in 1%. Grade 4 thrombocytopenia occurred in 27%, with a median duration of 5 days. Grade 3 or 4 anemia occurred in 37% of patients.

 

Combination with Cisplatin

Grade 4 neutropenia occurred in 48% and Grade 4 thrombocytopenia occurred in 7% of 147 patients. Grade 3 or 4 anemia occurred in 40% of patients.

…

Administer the first cycle of Topotecan Injection only to patients with a baseline neutrophil count of greater than or equal to 1,500/mm3 and a platelet count greater than or equal to 100,000/mm3. Monitor blood counts frequently during treatment. Withhold and reduce dose of Topotecan Injection based on neutrophil counts, platelet counts and hemoglobin levels.

5.2 Interstitial Lung Disease

(addition inderlined)

… Permanently discontinue Topotecan Injection if ILD is confirmed.

5.4 Embryo-Fetal Toxicity

(additions underlined)

…

Advise females of reproductive potential to use effective contraception during treatment and for 6 months after the last dose of Topotecan Injection. Advise males with a female partner of reproductive potential to use effective contraception during treatment with Topotecan Injection and for 3 months after the last dose.

6 Adverse Reactions

6.1 Clinical Trials Experience

(additions and revisions, please refer to label for more information)

6.2 Postmarketing Experience

(additions underlined)

…

Hypersensitivity: allergic manifestations, anaphylactoid reactions, angioedema

 

Gastrointestinal: abdominal pain potentially associated with neutropenic enterocolitis, gastrointestinal perforation

…

 

General and Administration Site Conditions: extravasation, mucosal inflammation

8 Use in Specific Populations

8.1 Pregnancy

(additions underlined)

…

Data

Animal Data

In rabbits, an intravenous dose of 0.10 mg/kg/day [about equal to the 1.5 mg/m2 clinical dose based on body surface area (BSA)] given on Days 6 through 20 of gestation caused maternal toxicity, embryolethality and reduced fetal body weight. In the rat, an intravenous dose of 0.23 mg/kg/day (about equal to the 1.5 mg/m2 clinical dose based on BSA) given for 14 days before mating through gestation Day 6 caused fetal resorption, microphthalmia, pre-implant loss, and mild maternal toxicity. Administration of an intravenous dose of 0.10 mg/kg/day (about half the 1.5 mg/m2 clinical dose based on BSA) given to rats on Days 6 through 17 of gestation caused an increase in post-implantation mortality. This dose also caused an increase in total fetal malformations.

…

8.2 Lactation

(additions underlined)

Risk Summary

There are no data on the presence of topotecan or its metabolites in human milk or their effects on the breastfed infant or on milk production. Lactating rats excrete high concentrations of topotecan in milk (see Data).

Because of the potential for serious adverse reactions in breastfed infants, advise women not to breastfeed during treatment with Topotecan Injection and for 1 week after the last dose.

 

Data

Animal Data

Following intravenous administration of topotecan to lactating rats at a dose of 4.72 mg/m2 (about twice the 1.5 mg/m2 clinical dose based on BSA), topotecan was excreted into milk at concentrations up to 48 fold higher than those in plasma.

8.3 Females and Males of Reproductive Potential

(additions underlined)

Pregnancy Testing

Verify pregnancy status of females of reproductive potential prior to initiating Topotecan Injection.

 

Contraception

Topotecan Injection can cause fetal harm when administered to a pregnant woman.

 

Females

Advise females of reproductive potential to use effective contraception during treatment with Topotecan Injection and for 6 months after the last dose.

 

Males

Topotecan may damage spermatozoa, resulting in possible genetic and fetal abnormalities. Advise males with a female partner of reproductive potential to use effective contraception during treatment with Topotecan Injection and for 3 months after the last dose.

 

Infertility

Females

Topotecan can have both acute and long-term effects on fertility.

 

Males

Effects on spermatogenesis occurred in animals administered topotecan

8.6 Renal Impairment

(additions underlined)

Reduce the dose of Topotecan Injection in patients with a CLcr of 20 to 39 mL/min. No dosage adjustment is recommended for patients with CLcr greater than or equal to 40 mL/min. Insufficient data are available in patients with CLcr less than 20 mL/min to provide a dosage recommendation for Topotecan Injection.

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

PATIENT COUNSELING INFORMATION

(additions underlined)

…

 

Embryo-Fetal Toxicity

Advise females of reproductive potential and males with female partners of reproductive potential of the potential risk to a fetus. Advise women to contact their healthcare provider if they become pregnant, or if pregnancy is suspected during treatment with Topotecan Injection .

 

Advise females of reproductive potential to use effective contraception during treatment and for 6 months after the last dose of Topotecan Injection .

 

Advise males with a female partner of reproductive potential to use effective contraception during treatment and for 3 months after the last dose of Topotecan Injection.

 

Lactation

Advise women to discontinue breastfeeding during treatment and for 1 week after the last dose of Topotecan Injection.

…

09/20/2017 (SUPPL-10)

Approved Drug Label (PDF)

6 Adverse Reactions

6.1 Clinical Trials Experience

(additions underlined)

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared with rates in the clinical trials of another drug and may not reflect the rates observed in practice.

Ovarian Cancer

Table 1 shows the Grade 3/4 hematologic and major non-hematologic adverse reactions in the topotecan/paclitaxel comparator trial in ovarian cancer.

Table 1. Adverse Reactions Experienced by ?5% of Ovarian Cancer Patients Randomized to Receive Topotecan or Paclitaxel

(please refer to label to view Table 1)

…

Hepatobiliary Disorders in Ovarian and Small Cell Lung Cancer Patients Receiving Topotecan: Based on the combined experience of 453 patients with metastatic ovarian carcinoma, and 426 patients with small cell lung cancer treated with topotecan, Grade 1 transient elevations in hepatic enzymes occurred in 8% of patients. Grade 3/4 elevations occurred in 4%. Grade 3/4 elevated bilirubin occurred in less than 2% of patients.

8 Use in Specific Populations

8.5 Geriatric Use

(additions underlined)

Of the 879 patients with metastatic ovarian cancer or small cell lung cancer in clinical trials of topotecan, 32% (n = 281) were aged 65 years and older, while 3.8% (n = 33) were aged 75 years and older. Of the 140 patients with Stage IV-B, relapsed, or refractory cervical cancer in clinical trial of topotecan who received topotecan plus cisplatin in the randomized clinical trial, 6% (n = 9) were aged 65 years and older, while 3% (n = 4) were aged 75 years and older.

No overall differences in effectiveness or safety were observed between these patients and younger adult patients, and other reported clinical experience has not identified differences in responses between the elderly and younger adult patients.

01/29/2016 (SUPPL-7)

Approved Drug Label (PDF)

Boxed Warning

WARNING: BONE MARROW SUPPRESSION

  • Topotecan injection can cause severe myelosuppression. Administer only to patients with baseline neutrophil counts of greater than or equal to 1,500 cells/mm3and platelet counts greater than or equal to 100,000 cells/mm3. Monitor blood cell counts.