Trodelvy Adverse Reactions

The following adverse reactions are discussed in greater detail in Precautions: Neutropenia, Diarrhea, Hypersensitivity and Infusion-Related Reactions, Nausea and Vomiting.
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 clinical practice.
The pooled safety population described in Precautions reflect exposure to TRODELVY in 1063 patients from four studies, IMMU-132-01, ASCENT, TROPiCS-02, and TROPHY which included 366 patients with mTNBC, 322 patients with hormone receptor-positive (HR+)/human epidermal growth factor receptor 2-negative (HER2-) breast cancer, and 180 patients with metastatic urothelial cancer. TRODELVY was administered as an intravenous infusion once weekly on Days 1 and 8 of 21-day treatment cycles at doses of 10 mg/kg until disease progression or unacceptable toxicity. Among the 1063 patients treated with TRODELVY, the median duration of treatment was 4.1 months (range: 0 to 63 months). In this pooled safety population, the most common (≥25%) adverse reactions including laboratory abnormalities were decreased leukocyte count (84%), decreased neutrophil count (75%), decreased hemoglobin (69%) , diarrhea (64%), nausea (64%), decreased lymphocyte count (63%), fatigue (51%), alopecia (45%), constipation (37%), increased glucose (37%), decreased albumin (35%), vomiting (35%), decreased appetite (30%), decreased creatinine clearance (28%), increased alkaline phosphatase (28%), decreased magnesium (27%), decreased potassium (26%), and decreased sodium (26%).
Locally Advanced or Metastatic Triple-Negative Breast Cancer: ASCENT Study: The safety of TRODELVY was evaluated in a randomized, active-controlled, open-label study (ASCENT) in patients with mTNBC who had previously received a taxane and at least two prior chemotherapies. Patients were randomized (1:1) to receive either TRODELVY (n=258) or single agent chemotherapy (n=224) and were treated until disease progression or unacceptable toxicity [see Pharmacology: Pharmacodynamics: Clinical Studies: Locally Advanced or Metastatic Triple-Negative Breast Cancer under Actions]. For patients treated with TRODELVY, the median duration of treatment was 4.4 months (range: 0 to 23 months).
Serious adverse reactions occurred in 27% of patients receiving TRODELVY. Serious adverse reactions in >1% of patients receiving TRODELVY included neutropenia (7%), diarrhea (4%), and pneumonia (3%). Fatal adverse reactions occurred in 1.2% of patients who received TRODELVY, including respiratory failure (0.8%) and pneumonia (0.4%). TRODELVY was permanently discontinued for adverse reactions in 5% of patients. Adverse reactions leading to permanent discontinuation in ≥1% of patients who received TRODELVY were pneumonia (1%) and fatigue (1%).
Adverse reactions leading to a treatment interruption of TRODELVY occurred in 63% of patients. The most frequent (≥5%) adverse reactions leading to a treatment interruption were neutropenia (47%), diarrhea (5%), respiratory infection (5%), and leukopenia (5%).
Adverse reactions leading to a dose reduction of TRODELVY occurred in 22% of patients. The most frequent (>4%) adverse reactions leading to a dose reduction were neutropenia (11%) and diarrhea (5%).
Granulocyte-colony stimulating factor (G-CSF) was used in 44% of patients who received TRODELVY.
Tables 6 and 7 summarize adverse reactions and laboratory abnormalities, respectively, in the ASCENT study. (See Tables 6 and 7.)

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Study IMMU-132-01: The safety of TRODELVY was evaluated in a single-arm, open-label study (IMMU-132-01) in patients with mTNBC and other malignancies, which included 108 patients with mTNBC who had received at least two prior anticancer therapies for metastatic disease [see Pharmacology: Pharmacodynamics: Clinical Studies: Locally Advanced or Metastatic Triple-Negative Breast Cancer under Actions]. TRODELVY was administered as an intravenous infusion once weekly on Days 1 and 8 of 21-day treatment cycles at doses up to 10 mg/kg until disease progression or unacceptable toxicity. The median treatment duration in these 108 patients was 5.1 months (range: 0 to 51 months).
Serious adverse reactions occurred in 31% of the patients. Serious adverse reactions in >1% of patients receiving TRODELVY included febrile neutropenia (6%) vomiting (5%), nausea (3%), dyspnea (3%), diarrhea (4%), anemia (2%), pleural effusion, neutropenia, pneumonia, dehydration (each 2%).
TRODELVY was permanently discontinued for adverse reactions in 2% of patients. Adverse reactions leading to permanent discontinuation were anaphylaxis, anorexia/fatigue, headache (each 0.9%). Forty-five percent (45%) of patients experienced an adverse reaction leading to treatment interruption. The most common adverse reaction leading to treatment interruption was neutropenia (33%). Adverse reactions leading to dose reduction occurred in 33% of patients treated with TRODELVY, with 24% having one dose reduction, and 9% with two dose reductions. The most common adverse reaction leading to dose reductions was neutropenia/febrile neutropenia.
Tables 8 and 9 summarize adverse reactions and laboratory abnormalities occurring in ≥10% of patients with mTNBC in the IMMU-132-01 study. (See Tables 8 and 9.)

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Locally Advanced or Metastatic HR-Positive, HER2-Negative Breast Cancer: TROPiCS-02 Study: The safety of TRODELVY was evaluated in a randomized, active-controlled, open-label, study (TROPiCS-02) in patients with unresectable locally advanced or metastatic HR-positive, HER2-negative breast cancer whose disease has progressed after the following in any setting: a CDK 4/6 inhibitor, endocrine therapy, and a taxane; patients received at least two prior chemotherapies in the metastatic setting (one of which could be in the neoadjuvant or adjuvant setting if progression occurred within 12 months). Patients were randomized (1:1) to receive either TRODELVY (n=268) or single agent chemotherapy (n=249) and were treated until disease progression or unacceptable toxicity [see Pharmacology: Pharmacodynamics: Clinical Studies: Locally Advanced or Metastatic HR-Positive, HER2-Negative Breast Cancer under Actions]. For patients treated with TRODELVY, the median duration of treatment was 4.1 months (range: 0 to 63 months).
Serious adverse reactions occurred in 28% of patients receiving TRODELVY. Serious adverse reactions in >1% of patients receiving TRODELVY included diarrhea (5%), febrile neutropenia (4%), neutropenia (3%), abdominal pain, colitis, neutropenic colitis, pneumonia, and vomiting (each 2%). Fatal adverse reactions occurred in 2% of patients who received TRODELVY including arrhythmia, COVID-19, nervous system disorder, pulmonary embolism, and septic shock (each 0.4%). TRODELVY was permanently discontinued for adverse reactions in 6% of patients. The most frequent (≥0.5%) adverse reactions leading to permanent discontinuation in patients who received TRODELVY were asthenia, general physical health deterioration, and neutropenia (each 0.7%).
Adverse reactions leading to a treatment interruptions of TRODELVY occurred in 66% of patients. The most frequent (≥5%) adverse reaction leading to treatment interruption was neutropenia (50%).
Adverse reaction leading to a dose reduction of TRODELVY occurred in 33% of patients. The most frequent (>5%) adverse reaction leading to dose reduction were neutropenia (16%) and diarrhea (8%). G-CSF was used in 54% of patients who received TRODELVY.
Tables 10 and 11 summarize adverse reactions and laboratory abnormalities in the TROPiCS-02 study. (See Table 10.)

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Other clinically significant adverse reactions in TROPiCS-02 (≤10%) include: hypotension (5%), pain (5%), rhinorrhea (5%), hypocalcemia (3%), nasal congestion (3%), skin hyperpigmentation, (3%), colitis or neutropenic colitis (2%), hyponatremia (2%), pneumonia (2%), proteinuria (1%), enteritis (0.4%). (See Table 11.)

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