Intravenous Atezolizumab in Combination with Cobimetinib and Vemurafenib:

Immune-mediated pneumonitis occurred in 13% (29/230) of patients receiving intravenous atezolizumab in combination with cobimetinib and vemurafenib in the IMspire150 trial [see Adverse Reactions (6.1)], including Grade 3 (1.3%) and Grade 2 (7%) adverse reactions. Pneumonitis led to permanent discontinuation of intravenous atezolizumab in 2.6% of patients and withholding of intravenous atezolizumab in 7.4% of patients.

Systemic corticosteroids were required in 55% (16/29) of patients with pneumonitis. Pneumonitis resolved in 97% of the 29 patients. Of the 17 patients in whom intravenous atezolizumab was withheld for pneumonitis, 10 reinitiated intravenous atezolizumab after symptom improvement; of these, 50% had recurrence of pneumonitis.

Intravenous Atezolizumab in Combination with Cobimetinib and Vemurafenib:

Immune-mediated hepatitis occurred in 6.1% (14/230) of patients receiving intravenous atezolizumab in combination with cobimetinib and vemurafenib in the IMspire150 trial [see Adverse Reactions (6.1)], including Grade 4 (1.3%), Grade 3 (1.7%) and Grade 2 (1.3%) adverse reactions. Hepatitis led to permanent discontinuation of intravenous atezolizumab in 2.2% and withholding of intravenous atezolizumab in 1.7% of patients.

Systemic corticosteroids were required in 50% (7/14) of patients with hepatitis. Hepatitis resolved in 93% of the 14 patients. Of the 4 patients in whom intravenous atezolizumab was withheld for hepatitis, 3 reinitiated intravenous atezolizumab after symptom improvement; of these, 33% had recurrence of hepatitis.

Adrenal Insufficiency:

TECENTRIQ HYBREZA can cause primary or secondary adrenal insufficiency, including Grade 3 adverse reactions. For Grade 2 or higher adrenal insufficiency, initiate symptomatic treatment, including hormone replacement as clinically indicated. Withhold or permanently discontinue TECENTRIQ HYBREZA depending on severity [see Dosage and Administration (2.3)].

Immune-mediated adrenal insufficiency occurred in 0.8% (2/247) of patients with locally advanced or metastatic NSCLC receiving TECENTRIQ HYBREZA as monotherapy in the IMscin001 trial [see Adverse Reactions (6.1)], including Grade 2 (0.4%) adverse reactions. Adrenal insufficiency led to the withholding of TECENTRIQ HYBREZA in both patients. Systemic corticosteroids were required in 50% (1/2) of patients with adrenal insufficiency who received TECENTRIQ HYBREZA as monotherapy; this single patient remained on systemic corticosteroids.

Hypophysitis:

TECENTRIQ HYBREZA can cause immune-mediated hypophysitis, including Grade 2 adverse reactions. Hypophysitis can present with acute symptoms associated with mass effect such as headache, photophobia, or visual field cuts. Hypophysitis can cause hypopituitarism. Initiate hormone replacement as clinically indicated. Withhold or permanently discontinue TECENTRIQ HYBREZA depending on severity [see Dosage and Administration (2.3)].

Immune-mediated hypophysitis occurred in 0.4% (1/247) of patients with locally advanced or metastatic NSCLC in the IMscin001 trial [see Adverse Reactions (6.1)] receiving TECENTRIQ HYBREZA as monotherapy, including Grade 1 (0.4%) adverse reactions. Hypophysitis led to the withholding of TECENTRIQ HYBREZA in this patient.

Thyroid Disorders:

TECENTRIQ HYBREZA can cause immune-mediated thyroid disorders. Thyroiditis can present with or without endocrinopathy. Hypothyroidism can follow hyperthyroidism. Initiate hormone replacement for hypothyroidism or medical management for hyperthyroidism as clinically indicated. Withhold or permanently discontinue TECENTRIQ HYBREZA depending on severity [see Dosage and Administration (2.3)].

Thyroiditis:

Immune-mediated thyroiditis occurred in 0.8% (2/247) of patients with locally advanced or metastatic NSCLC receiving TECENTRIQ HYBREZA as monotherapy in the IMscin001 trial [see Adverse Reactions (6.1)], including Grade 2 (0.4%) adverse reactions. Thyroiditis resolved in 50% of patients.

Hyperthyroidism:

Immune-mediated hyperthyroidism occurred in 2% (5/247) of patients with locally advanced or metastatic NSCLC receiving TECENTRIQ HYBREZA as monotherapy in the IMscin001 trial [see Adverse Reactions (6.1)], including Grade 2 (1.2%) adverse reactions. Hyperthyroidism led to withholding of TECENTRIQ HYBREZA in 0.8% of patients.

Anti-thyroid therapy was required in 40% (2/5) of patients with hyperthyroidism who received TECENTRIQ HYBREZA as monotherapy. Of these 2 patients, one remained on anti-thyroid treatment. Of the 2 patients in whom TECENTRIQ HYBREZA was withheld for hyperthyroidism, 1 patient reinitiated TECENTRIQ HYBREZA; this patient did not have recurrence of hyperthyroidism.

Intravenous Atezolizumab in Combination with Cobimetinib and Vemurafenib:

Hyperthyroidism occurred in 19% (43/230) of patients receiving intravenous atezolizumab in combination with cobimetinib and vemurafenib in the IMspire150 trial [see Adverse Reactions (6.1)], including Grade 3 (0.9%) and Grade 2 (7.8%) adverse reactions. Hyperthyroidism led to permanent discontinuation of intravenous atezolizumab in 0.4% and withholding of intravenous atezolizumab in 10% of patients. Antithyroid therapy was required in 53% (23/43) of patients with hyperthyroidism. Of these 23 patients, the majority remained on antithyroid treatment. Of the 24 patients in whom intravenous atezolizumab was withheld for hyperthyroidism, 18 patients reinitiated intravenous atezolizumab; of these, 28% had recurrence of hyperthyroidism.

Hypothyroidism:

TECENTRIQ HYBREZA can cause immune-mediated hypothyroidism, including Grade 4 adverse reactions. Immune-mediated hypothyroidism occurred in 10% (25/247) of patients with locally advanced or metastatic NSCLC who received TECENTRIQ HYBREZA as monotherapy in the IMscin001 trial [see Adverse Reactions (6.1)].

Hormone replacement was required in 68% (17/25) of patients with hypothyroidism who received TECENTRIQ HYBREZA as monotherapy. Two patients with hypothyroidism remained on thyroid hormone replacement.

Intravenous Atezolizumab in Combination with Platinum-based Chemotherapy:

Hypothyroidism occurred in 11% (277/2421) of patients with NSCLC (N = 2223) or SCLC (N = 198) enrolled in five randomized, active-controlled trials, including IMpower150, IMpower130 and IMpower133 receiving intravenous atezolizumab in combination with platinum-based chemotherapy, including Grade 4 (< 0.1%), Grade 3 (0.3%), and Grade 2 (5.7%) adverse reactions. Hypothyroidism led to permanent discontinuation of intravenous atezolizumab in 0.1% and withholding of intravenous atezolizumab in 1.6% of patients.

Hormone replacement therapy was required in 71% (198/277) of patients with hypothyroidism. The majority of patients with hypothyroidism remained on thyroid hormone replacement. Of the 39 patients in whom intravenous atezolizumab was withheld for hypothyroidism, 9 reinitiated intravenous atezolizumab after symptom improvement.

Intravenous Atezolizumab in Combination with Cobimetinib and Vemurafenib:

Hypothyroidism occurred in 26% (60/230) of patients receiving intravenous atezolizumab in combination with cobimetinib and vemurafenib in the IMspire150 trial [see Adverse Reactions (6.1)], including Grade 2 (9.1%) adverse reactions. Hypothyroidism led to withholding of intravenous atezolizumab in 2.6% of patients. Hormone replacement therapy was required in 52% (31/60) of patients with hypothyroidism. The majority of patients with hypothyroidism remained on thyroid hormone replacement. Of the 6 patients in whom intravenous atezolizumab was withheld for hypothyroidism, 4 reinitiated intravenous atezolizumab after symptom improvement. The majority of patients with hypothyroidism required long term thyroid replacement.

Type 1 Diabetes Mellitus, which can present with Diabetic Ketoacidosis:

TECENTRIQ HYBREZA can cause type 1 diabetes mellitus, including Grade 3 adverse reactions and diabetic ketoacidosis. Monitor patients for hyperglycemia or other signs and symptoms of diabetes. Initiate treatment with insulin as clinically indicated. Withhold or permanently discontinue TECENTRIQ HYBREZA depending on severity [see Dosage and Administration (2.3)].

Intravenous Atezoliuzmab in Combination with Cobimetinib and Vemurafenib:

Immune-mediated nephritis with renal dysfunction occurred in 1.3% (3/230) of patients receiving intravenous atezolizumab in combination with cobimetinib and vemurafenib in the IMspire150 trial [see Adverse Reactions (6.1)], including Grade 2 (1.3%) adverse reactions. Nephritis led to permanent discontinuation of intravenous atezolizumab in 0.4% and withholding of intravenous atezolizumab in 0.9% of patients.

Systemic corticosteroids were required in 67% (2/3) of patients with nephritis. Nephritis resolved in all 3 of these patients. Of the 2 patients in whom intravenous atezolizumab was withheld for nephritis, both reinitiated intravenous atezolizumab after symptom improvement and neither had recurrence of nephritis.

Adverse Reactions in Adult Patients with NSCLC Treated with Intravenous Atezolizumab

The safety of TECENTRIQ HYBREZA for its approved NSCLC indications [see Indications and Usage (1.1)] has been established in adequate and well-controlled studies of intravenous atezolizumab for the:

• adjuvant treatment (following tumor resection and platinum-based chemotherapy) in adult patients with stage II to IIIA NSCLC whose tumors have PD-L1 expression on ≥ 1% of tumor cells (IMpower010 study).
• first-line treatment of adult patients with metastatic NSCLC whose tumors have high PD-L1 expression (PD-L1 stained ≥ 50% of tumor cells [TC ≥ 50%] or PD-L1 stained tumor-infiltrating immune cells [IC] covering ≥ 10% of the tumor area [IC ≥ 10%]), with no EGFR or ALK genomic tumor aberrations (IMpower110 study).
• first-line treatment of adult patients with metastatic non-squamous NSCLC with no EGFR or ALK genomic tumor aberrations (IMpower150 study).
• first-line treatment of adult patients with metastatic non-squamous NSCLC with no EGFR or ALK genomic tumor aberrations (IMpower130 study).
• first-line treatment of adult patients with metastatic NSCLC whose tumors have high PD-L1 expression, with no EGFR or ALK genomic tumor aberrations (OAK study).

Below is a description of adverse reactions of intravenous atezolizumab in these adequate and well-controlled NSCLC studies.

Non-Small Cell Lung Cancer (NSCLC)

IMpower010

The safety of intravenous atezolizumab was evaluated in IMpower010, a multicenter, open-label, randomized trial for the adjuvant treatment of patients with stage IB (tumors ≥ 4 cm) -IIIA NSCLC who had complete tumor resection and received up to 4 cycles of cisplatin-based adjuvant chemotherapy. Patients received intravenous atezolizumab 1200 mg every 3 weeks (n = 495) for 1 year (16 cycles), unless disease progression or unacceptable toxicity occurred, or best supportive care [see Clinical Studies (14.1)]. The median number of cycles received was 16 (range: 1, 16).

Fatal adverse reactions occurred in 1.8% of patients receiving intravenous atezolizumab; these included multiple organ dysfunction syndrome, pneumothorax, interstitial lung disease, arrhythmia, acute cardiac failure, myocarditis, cerebrovascular accident, death of unknown cause, and acute myeloid leukemia (1 patient each).

Serious adverse reactions occurred in 18% of patients receiving intravenous atezolizumab. The most frequent serious adverse reactions (> 1%) were pneumonia (1.8%), pneumonitis (1.6%), and pyrexia (1.2%).

Intravenous atezolizumab was discontinued due to adverse reactions in 18% of patients; the most common adverse reactions (≥ 1%) leading to intravenous atezolizumab discontinuation were pneumonitis (2.2%), hypothyroidism (1.6%), increased aspartate aminotranferase (1.4%), arthralgia (1.0%), and increased alanine aminotransferase (1.0%).

Adverse reactions leading to interruption of intravenous atezolizumab occurred in 29% of patients; the most common (> 1%) were rash (3.0%), hyperthyroidism (2.8%), hypothyroidism (1.6%), increased AST (1.6%), pyrexia (1.6%), increased ALT (1.4%), upper respiratory tract infection (1.4%), headache (1.2%), peripheral neuropathy (1.2%), and pneumonia (1.2%).

Tables 5 and 6 summarize adverse reactions and selected laboratory abnormalities in patients receiving intravenous atezolizumab in IMpower010.

IMpower110

The safety of intravenous atezolizumab was evaluated in IMpower110, a multicenter, international, randomized, open-label study in 549 chemotherapy-naïve patients with stage IV NSCLC, including those with EGFR or ALK genomic tumor aberrations. Patients received intravenous atezolizumab 1200 mg every 3 weeks (n = 286) or platinum-based chemotherapy consisting of carboplatin or cisplatin with either pemetrexed or gemcitabine (n = 263) until disease progression or unacceptable toxicity [see Clinical Studies (14.1)]. IMpower110 enrolled patients whose tumors express PD-L1 (PD-L1 stained ≥ 1% of tumor cells [TC] or PD-L1 stained tumor-infiltrating immune cells [IC] covering ≥ 1% of the tumor area). The median duration of exposure to intravenous atezolizumab was 5.3 months (0 to 33 months).

Fatal adverse reactions occurred in 3.8% of patients receiving intravenous atezolizumab; these included death (reported as unexplained death and death of unknown cause), aspiration, chronic obstructive pulmonary disease, pulmonary embolism, acute myocardial infarction, cardiac arrest, mechanical ileus, sepsis, cerebral infarction, and device occlusion (1 patient each).

Serious adverse reactions occurred in 28% of patients receiving intravenous atezolizumab. The most frequent serious adverse reactions (> 2%) were pneumonia (2.8%), chronic obstructive pulmonary disease (2.1%) and pneumonitis (2.1%).

Intravenous atezolizumab was discontinued due to adverse reactions in 6% of patients; the most common adverse reactions (≥ 2 patients) leading to intravenous atezolizumab discontinuation were peripheral neuropathy and pneumonitis.

Adverse reactions leading to interruption of intravenous atezolizumab occurred in 26% of patients; the most common (> 1%) were ALT increased (2.1%), AST increased (2.1%), pneumonitis (2.1%), pyrexia (1.4%), pneumonia (1.4%) and upper respiratory tract infection (1.4%).

Tables 7 and 8 summarize adverse reactions and selected laboratory abnormalities in patients receiving intravenous atezolizumab in IMpower110.

IMpower150

The safety of intravenous atezolizumab with bevacizumab, paclitaxel and carboplatin was evaluated in IMpower150, a multicenter, international, randomized, open-label trial in which 393 chemotherapy-naïve patients with metastatic non-squamous NSCLC received intravenous atezolizumab 1200 mg with bevacizumab 15 mg/kg, paclitaxel 175 mg/m2 or 200 mg/m2, and carboplatin AUC 6 mg/mL/min intravenously every 3 weeks for a maximum of 4 or 6 cycles, followed by intravenous atezolizumab 1200 mg with bevacizumab 15 mg/kg intravenously every 3 weeks until disease progression or unacceptable toxicity [see Clinical Studies (14.1)]. The median duration of exposure to intravenous atezolizumab was 8.3 months in patients receiving intravenous atezolizumab with bevacizumab, paclitaxel, and carboplatin.

Fatal adverse reactions occurred in 6% of patients receiving intravenous atezolizumab; these included hemoptysis, febrile neutropenia, pulmonary embolism, pulmonary hemorrhage, death, cardiac arrest, cerebrovascular accident, pneumonia, aspiration pneumonia, chronic obstructive pulmonary disease, intracranial hemorrhage, intestinal angina, intestinal ischemia, intestinal obstruction and aortic dissection.

Serious adverse reactions occurred in 44%. The most frequent serious adverse reactions (> 2%) were febrile neutropenia, pneumonia, diarrhea, and hemoptysis.

Intravenous atezolizumab was discontinued due to adverse reactions in 15% of patients; the most common adverse reaction leading to discontinuation was pneumonitis (1.8%).

Adverse reactions leading to interruption of intravenous atezolizumab occurred in 48%; the most common (> 1%) were neutropenia, thrombocytopenia, fatigue/asthenia, diarrhea, hypothyroidism, anemia, pneumonia, pyrexia, hyperthyroidism, febrile neutropenia, increased ALT, dyspnea, dehydration and proteinuria.

Tables 9 and 10 summarize adverse reactions and laboratory abnormalities in patients receiving intravenous atezolizumab with bevacizumab, paclitaxel, and carboplatin in IMpower150.

IMpower130

The safety of intravenous atezolizumab with paclitaxel protein-bound and carboplatin was evaluated in IMpower130, a multicenter, international, randomized, open-label trial in which 473 chemotherapy-naïve patients with metastatic non-squamous NSCLC received intravenous atezolizumab 1200 mg and carboplatin AUC 6 mg/mL/min intravenously on Day 1 and paclitaxel protein-bound 100 mg/m2 intravenously on Days 1, 8, and 15 of each 21-day cycle for a maximum of 4 or 6 cycles, followed by intravenous atezolizumab 1200 mg intravenously every 3 weeks until disease progression or unacceptable toxicity [see Clinical Studies (14.1)]. Among patients receiving intravenous atezolizumab, 55% were exposed for 6 months or longer and 3.5% were exposed for greater than one year.

Fatal adverse reactions occurred in 5.3% of patients receiving intravenous atezolizumab; these included pneumonia (1.1%), pulmonary embolism (0.8%), myocardial infarction (0.6%), cardiac arrest (0.4%), pneumonitis (0.4%) and sepsis, septic shock, staphylococcal sepsis, aspiration, respiratory distress, cardiorespiratory arrest, ventricular tachycardia, death (not otherwise specified), and hepatic cirrhosis (0.2% each).

Serious adverse reactions occurred in 51% of patients receiving intravenous atezolizumab. The most frequent serious adverse reactions (≥ 2%) were pneumonia (6%), diarrhea (3%), lung infection (3%), pulmonary embolism (3%), chronic obstructive pulmonary disease exacerbation (2.5%), dyspnea (2.3%), and febrile neutropenia (1.9%).

Intravenous atezolizumab was discontinued due to adverse reactions in 13% of patients; the most common adverse reactions leading to discontinuation were pneumonia (0.8%), pulmonary embolism (0.8%), fatigue (0.6%), dyspnea (0.6%), pneumonitis (0.6%), neutropenia (0.4%), nausea (0.4%), renal failure (0.4%), cardiac arrest (0.4%), and septic shock (0.4%).

Adverse reactions leading to interruption of intravenous atezolizumab occurred in 62% of patients; the most common (> 1%) were neutropenia, thrombocytopenia, anemia, diarrhea, fatigue/asthenia, pneumonia, dyspnea, pneumonitis, pyrexia, nausea, acute kidney injury, vomiting, pulmonary embolism, arthralgia, infusion-related reaction, abdominal pain, chronic obstructive pulmonary disease exacerbation, dehydration, and hypokalemia.

Tables 11 and 12 summarize adverse reactions and laboratory abnormalities in patients receiving intravenous atezolizumab with paclitaxel protein-bound and carboplatin in IMpower130.

OAK

The safety of intravenous atezolizumab was evaluated in OAK, a multicenter, international, randomized, open-label trial in patients with metastatic NSCLC who progressed during or following a platinum-containing regimen, regardless of PD-L1 expression [see Clinical Studies (14.1)]. A total of 609 patients received intravenous atezolizumab 1200 mg intravenously every 3 weeks until unacceptable toxicity, radiographic progression, or clinical progression or docetaxel (n = 578) 75 mg/m2 intravenously every 3 weeks until unacceptable toxicity or disease progression. The study excluded patients with active or prior autoimmune disease or with medical conditions that required systemic corticosteroids. The median duration of exposure was 3.4 months (0 to 26 months) in intravenous atezolizumab-treated patients and 2.1 months (0 to 23 months) in docetaxel-treated patients.

The study population characteristics were: median age of 63 years (25 to 85 years), 46% age 65 years or older, 62% male, 71% White, 20% Asian, 68% former smoker, 16% current smoker, and 63% had ECOG performance status of 1.

Fatal adverse reactions occurred in 1.6% of patients; these included pneumonia, sepsis, septic shock, dyspnea, pulmonary hemorrhage, sudden death, myocardial ischemia or renal failure.

Serious adverse reactions occurred in 33.5% of patients. The most frequent serious adverse reactions (> 1%) were pneumonia, sepsis, dyspnea, pleural effusion, pulmonary embolism, pyrexia and respiratory tract infection.

Intravenous atezolizumab was discontinued due to adverse reactions in 8% of patients. The most common adverse reactions leading to intravenous atezolizumab discontinuation were fatigue, infections and dyspnea. Adverse reactions leading to interruption of intravenous atezolizumab occurred in 25% of patients; the most common (> 1%) were pneumonia, liver function test abnormality, dyspnea, fatigue, pyrexia, and back pain.

Tables 13 and 14 summarize adverse reactions and laboratory abnormalities, respectively, in OAK.

IMpower133

The safety of intravenous atezolizumab with carboplatin and etoposide was evaluated in IMpower133, a randomized, multicenter, double-blind, placebo-controlled trial in which 198 patients with ES-SCLC received intravenous atezolizumab 1200 mg and carboplatin AUC 5 mg/mL/min on Day 1 and etoposide 100 mg/m2 intravenously on Days 1, 2 and 3 of each 21-day cycle for a maximum of 4 cycles, followed by intravenous atezolizumab 1200 mg every 3 weeks until disease progression or unacceptable toxicity [see Clinical Studies (14.2)]. Among 198 patients receiving intravenous atezolizumab, 32% were exposed for 6 months or longer and 12% were exposed for 12 months or longer.

Fatal adverse reactions occurred in 2% of patients receiving intravenous atezolizumab. These included pneumonia, respiratory failure, neutropenia, and death (1 patient each).

Serious adverse reactions occurred in 37% of patients receiving intravenous atezolizumab. Serious adverse reactions in > 2% were pneumonia (4.5%), neutropenia (3.5%), febrile neutropenia (2.5%), and thrombocytopenia (2.5%).

Intravenous atezolizumab was discontinued due to adverse reactions in 11% of patients. The most frequent adverse reaction requiring permanent discontinuation in > 2% of patients was infusion-related reactions (2.5%).

Adverse reactions leading to interruption of intravenous atezolizumab occurred in 59% of patients; the most common (> 1%) were neutropenia (22%), anemia (9%), leukopenia (7%), thrombocytopenia (5%), fatigue (4.0%), infusion-related reaction (3.5%), pneumonia (2.0%), febrile neutropenia (1.5%), increased ALT (1.5%), and nausea (1.5%).

Tables 15 and 16 summarize adverse reactions and laboratory abnormalities, respectively, in patients who received intravenous atezolizumab with carboplatin and etoposide in IMpower133.

IMbrave150

The safety of intravenous atezolizumab in combination with bevacizumab was evaluated in IMbrave150, a multicenter, international, randomized, open-label trial in patients with locally advanced or metastatic or unresectable hepatocellular carcinoma who have not received prior systemic treatment [see Clinical Studies (14.3)]. Patients received 1,200 mg of intravenous atezolizumab intravenously followed by 15 mg/kg bevacizumab (n = 329) every 3 weeks, or 400 mg of sorafenib (n = 156) given orally twice daily, until disease progression or unacceptable toxicity. The median duration of exposure to intravenous atezolizumab was 7.4 months (range: 0–16 months) and to bevacizumab was 6.9 months (range: 0–16 months).

Fatal adverse reactions occurred in 4.6% of patients in the intravenous atezolizumab and bevacizumab arm. The most common adverse reactions leading to death were gastrointestinal and esophageal varices hemorrhage (1.2%) and infections (1.2%).

Serious adverse reactions occurred in 38% of patients in the intravenous atezolizumab and bevacizumab arm. The most frequent serious adverse reactions (≥ 2%) were gastrointestinal hemorrhage (7%), infections (6%), and pyrexia (2.1%).

Adverse reactions leading to discontinuation of intravenous atezolizumab occurred in 9% of patients in the intravenous atezolizumab and bevacizumab arm. The most common adverse reactions leading to intravenous atezolizumab discontinuation were hemorrhages (1.2%), including gastrointestinal, subarachnoid, and pulmonary hemorrhages; increased transaminases or bilirubin (1.2%); infusion-related reaction/cytokine release syndrome (0.9%); and autoimmune hepatitis (0.6%).

Adverse reactions leading to interruption of intravenous atezolizumab occurred in 41% of patients in the intravenous atezolizumab and bevacizumab arm; the most common (≥ 2%) were liver function laboratory abnormalities including increased transaminases, bilirubin, or alkaline phosphatase (8%); infections (6%); gastrointestinal hemorrhages (3.6%); thrombocytopenia/decreased platelet count (3.6%); hyperthyroidism (2.7%); and pyrexia (2.1%).

Immune-related adverse reactions requiring systemic corticosteroid therapy occurred in 12% of patients in the intravenous atezolizumab and bevacizumab arm.

Tables 17 and 18 summarize adverse reactions and laboratory abnormalities, respectively, in patients who received intravenous atezolizumab and bevacizumab in IMbrave150.

IMspire150

The safety of intravenous atezolizumab, administered with cobimetinib and vemurafenib, was evaluated in IMspire150, a double-blind, randomized (1:1), placebo-controlled study conducted in patients with previously untreated BRAF V600 mutation-positive metastatic or unresectable melanoma [see Clinical Studies (14.4)]. Patients received intravenous atezolizuamb with cobimetinib and vemurafenib (n = 230) or placebo with cobimetinib and vemurafenib (n = 281).

Among the 230 patients who received intravenous atezolizumab administered with cobimetinib and vemurafenib, the median duration of exposure to intravenous atezolizumab was 9.2 months (range: 0–30 months), to cobimetinib was 10.0 months (range: 1–31 months) and to vemurafenib was 9.8 months (range: 1–31 months).

Fatal adverse reactions occurred in 3% of patients in the intravenous atezolizumab plus cobimetinib and vemurafenib arm. Adverse reactions leading to death were hepatic failure, fulminant hepatitis, sepsis, septic shock, pneumonia, and cardiac arrest.

Serious adverse reactions occurred in 45% of patients in the intravenous atezolizumab plus cobimetinib and vemurafenib arm. The most frequent (≥ 2%) serious adverse reactions were hepatotoxicity (7%), pyrexia (6%), pneumonia (4.3%), malignant neoplasms (2.2%), and acute kidney injury (2.2%).

Adverse reactions leading to discontinuation of intravenous atezolizumab occurred in 21% of patients in the intravenous atezolizumab plus cobimetinib and vemurafenib arm. The most frequent (≥ 2%) adverse reactions leading to intravenous atezolizumab discontinuation were increased ALT (2.2%) and pneumonitis (2.6%).

Adverse reactions leading to interruption of intravenous atezolizumab occurred in 68% of patients in the intravenous atezolizumab plus cobimetinib and vemurafenib arm. The most frequent (≥ 2%) adverse reactions leading to intravenous atezolizuamb interruption were pyrexia (14%), increased ALT (13%), hyperthyroidism (10%), increased AST (10%), increased lipase (9%), increased amylase (7%), pneumonitis (5%), increased CPK (4.3%), diarrhea (3.5%), pneumonia (3.5%), asthenia (3%), rash (3%), influenza (3%), arthralgia (2.6%), fatigue (2.2%), dyspnea (2.2%), cough (2.2%), peripheral edema (2.2%), uveitis (2.2%), bronchitis (2.2%), hypothyroidism (2.2%), and respiratory tract infection (2.2%).

Tables 19 and 20 summarize the incidence of adverse reactions and laboratory abnormalities in IMspire150.

Clinically important adverse reactions in < 10% of patients who received intravenous atezolizumab plus cobimetinib and vemurafenib were:

Cardiac Disorders: Arrhythmias, ejection fraction decreased, electrocardiogram QT prolonged

Eye Disorders: Uveitis

Gastrointestinal disorders: Pancreatitis

Infections and infestations: Pneumonia, urinary tract infection

Metabolism and nutrition disorders: Hyperglycemia

Nervous system Disorders: Dizziness, dysgeusia, syncope

Respiratory, thoracic and mediastinal disorders: Dyspnea, oropharyngeal pain

Skin and Subcutaneous Tissue Disorders: Vitiligo

ML39345 Study

The safety of intravenous atezolizumab was evaluated in 47 adult and 2 pediatric patients enrolled in Study ML39345 [see Clinical Studies (14.5)]. Adult patients received intravenous atezolizumab 1200 mg every 3 weeks and pediatric patients received 15 mg/kg up to a maximum 1200 mg every 3 weeks until disease progression or unacceptable toxicity. The median duration of exposure to intravenous atezolizumab was 8.9 months (1 to 40 months).

Serious adverse reactions occurred in 41% of patients receiving intravenous atezolizumab. The most frequent serious adverse reactions (> 2%) were fatigue, pain in extremity, pulmonary hemorrhage, and pneumonia (4.1% each).

Dosage interruptions of intravenous atezolizumab due to an adverse reaction occurred in 35% of patients. The most common adverse reactions (≥ 3%) leading to dose interruptions were pneumonitis and pain in extremity (4.1% each).

Tables 21 and 22 summarize adverse reactions and laboratory abnormalities in Study ML39345.

Animal Data:

TECENTRIQ HYBREZA for subcutaneous injection contains atezolizumab and hyaluronidase [see Description (11)].

Atezolizumab: Animal reproduction studies have not been conducted with atezolizumab to evaluate its effect on reproduction and fetal development. A literature-based assessment of the effects on reproduction demonstrated that a central function of the PD-L1/PD-1 pathway is to preserve pregnancy by maintaining maternal immune tolerance to a fetus. Blockage of PD-L1 signaling has been shown in murine models of pregnancy to disrupt tolerance to a fetus and to result in an increase in fetal loss; therefore, potential risks of administering atezolizumab during pregnancy include increased rates of abortion or stillbirth. As reported in the literature, there were no malformations related to the blockade of PD-L1/PD-1 signaling in the offspring of these animals; however, immune-mediated disorders occurred in PD-1 and PD-L1 knockout mice. Based on its mechanism of action, fetal exposure to atezolizumab may increase the risk of developing immune-mediated disorders or altering the normal immune response.

Hyaluronidase: In an embryo-fetal study, mice were dosed daily by subcutaneous injection during the period of organogenesis with hyaluronidase (recombinant human) at dose levels up to 2,200,000 U/kg, which is > 2,400 times higher than the human dose. The study found no evidence of teratogenicity. Reduced fetal weight and increased numbers of fetal resorptions were observed, with no effects found at a daily dose of 360,000 U/kg, which is > 400 times higher than the human dose.

In a peri-and post-natal reproduction study, mice have been dosed daily by subcutaneous injection, with hyaluronidase (recombinant human) from implantation through lactation and weaning at dose levels up to 1,100,000 U/kg, which is > 1,200 times higher than the human dose. The study found no adverse effects on sexual maturation, learning and memory or fertility of the offspring.

Adjuvant Treatment of Early-stage NSCLC

Metastatic Chemotherapy-Naïve NSCLC

First-Line Metastatic Non-squamous NSCLC

Previously Treated Metastatic NSCLC

IMpower133

The efficacy of intravenous atezolizumab with carboplatin and etoposide was investigated in IMpower133 (NCT02763579), a randomized (1:1), multicenter, double-blind, placebo-controlled trial in 403 patients with ES-SCLC. IMpower133 enrolled patients with ES-SCLC who had received no prior chemotherapy for extensive stage disease and ECOG performance status 0 or 1. The trial excluded patients with active or untreated CNS metastases, history of autoimmune disease, administration of a live, attenuated vaccine within 4 weeks prior to randomization, or administration of systemic immunosuppressive medications within 1 week prior to randomization. Randomization was stratified by sex, ECOG performance status, and presence of brain metastases. Patients were randomized to receive one of the following two treatment arms:

• intravenous atezolizumab 1200 mg and carboplatin AUC 5 mg/mL/min on Day 1 and etoposide 100 mg/m2 intravenously on Days 1, 2 and 3 of each 21-day cycle for a maximum of 4 cycles followed by intravenous atezolizumab 1200 mg once every 3 weeks until disease progression or unacceptable toxicity, or
• placebo and carboplatin AUC 5 mg/mL/min on Day 1 and etoposide 100 mg/m2 intravenously on Days 1, 2, and 3 of each 21-day cycle for a maximum of 4 cycles followed by placebo once every 3 weeks until disease progression or unacceptable toxicity.

Administration of intravenous atezolizumab was permitted beyond RECIST-defined disease progression. Tumor assessments were conducted every 6 weeks for the first 48 weeks following Cycle 1, Day 1 and then every 9 weeks thereafter. Patients treated beyond disease progression had tumor assessment conducted every 6 weeks until treatment discontinuation.

Major efficacy outcome measures were OS and PFS as assessed by investigator per RECIST v1.1 in the intent-to-treat population. Additional efficacy outcome measures included ORR and DoR as assessed by investigator per RECIST v1.1.

A total of 403 patients were randomized, including 201 to the intravenous atezolizumab arm and 202 to the chemotherapy alone arm. The median age was 64 years (range: 26 to 90) and 65% were male. The majority of patients were White (80%); 17% were Asian, 4% were Hispanic and 1% were Black. Baseline ECOG performance status was 0 (35%) or 1 (65%); 9% of patients had a history of brain metastases, and 97% were current or previous smokers. Efficacy results are presented in Table 28 and Figure 6.

Figure 6: Kaplan-Meier Plot of Overall Survival in IMpower133

IMbrave150

The efficacy of intravenous atezolizumab in combination with bevacizumab was investigated in IMbrave150 (NCT03434379), a multicenter, international, open-label, randomized trial in patients with locally advanced unresectable and/or metastatic hepatocellular carcinoma who have not received prior systemic therapy. Randomization was stratified by geographic region (Asia excluding Japan vs. rest of world), macrovascular invasion and/or extrahepatic spread (presence vs. absence), baseline AFP (< 400 vs. ≥ 400 ng/mL), and by ECOG performance status (0 vs. 1).

A total of 501 patients were randomized (2:1) to receive either intravenous atezolizumab as an intravenous infusion of 1200 mg, followed by 15 mg/kg bevacizumab, on the same day every 3 weeks or sorafenib 400 mg given orally twice daily, until disease progression or unacceptable toxicity. Patients could discontinue either intravenous atezolizumab or bevacizumab (e.g., due to adverse events) and continue on monotherapy until disease progression or unacceptable toxicity associated with the monotherapy.

The study enrolled patients who were ECOG performance score 0 or 1 and who had not received prior systemic treatment. Patients were required to be evaluated for the presence of varices within 6 months prior to treatment, and were excluded if they had variceal bleeding within 6 months prior to treatment, untreated or incompletely treated varices with bleeding, or high risk of bleeding. Patients with Child-Pugh B or C cirrhosis, moderate or severe ascites; history of hepatic encephalopathy; a history of autoimmune disease; administration of a live, attenuated vaccine within 4 weeks prior to randomization; administration of systemic immunostimulatory agents within 4 weeks or systemic immunosuppressive medications within 2 weeks prior to randomization; or untreated or corticosteroid-dependent brain metastases were excluded. Tumor assessments were performed every 6 weeks for the first 54 weeks and every 9 weeks thereafter.

The demographics and baseline disease characteristics of the study population were balanced between the treatment arms. The median age was 65 years (range: 26 to 88) and 83% of patients were male. The majority of patients were Asian (57%) or White (35%); 40% were from Asia (excluding Japan). Approximately 75% of patients presented with macrovascular invasion and/or extrahepatic spread and 37% had a baseline AFP ≥ 400 ng/mL. Baseline ECOG performance status was 0 (62%) or 1 (38%). HCC risk factors were Hepatitis B in 48% of patients, Hepatitis C in 22%, and 31% of patients had non-viral liver disease. The majority of patients had BCLC stage C (82%) disease at baseline, while 16% had stage B, and 3% had stage A.

The major efficacy outcome measures were overall survival (OS) and independent review facility (IRF)-assessed progression free survival (PFS) per RECIST v1.1. Additional efficacy outcome measures were IRF-assessed overall response rate (ORR) per RECIST and mRECIST.

Efficacy results are presented in Table 29 and Figure 7.

Figure 7: Kaplan-Meier Plot of Overall Survival in IMbrave150

Exploratory analyses showed that the subset of patients (20%) who were ADA-positive by week 6 appeared to have reduced efficacy (effect on OS) as compared to patients (80%) who tested negative for treatment-emergent ADA by week 6 [see Clinical Pharmacology (12.6)]. ADA-positive patients by week 6 appeared to have similar overall survival compared to sorafenib-treated patients. In an exploratory analysis, inverse probability weighting was conducted to compare ADA-positive patients and ADA-negative patients in the intravenous atezolizumab and bevacizumab arm to the sorafenib arm. Inverse probability weighting factors were: baseline sum of longest tumor size (BSLD), baseline ECOG, baseline albumin, baseline LDH, sex, age, race, geographic region, weight, neutrophil-to-lymphocyte ratio, AFP (< 400 ng/mL vs ≥ 400 ng/mL), number of metastatic sites, MVI and/or EHS present at study entry, etiology (HBV vs. HCV vs. non-viral) and Child-Pugh Score (A5 vs. A6). The OS hazard ratio comparing the ADA-positive subgroup of the intravenous atezolizumab and bevacizumab arm to sorafenib was 0.93 (95% CI: 0.57, 1.53). The OS hazard ratio comparing the ADA-negative subgroup to sorafenib was 0.39 (95% CI: 0.26, 0.60).

IMspire150

The efficacy of intravenous atezolizumab in combination with cobimetinib and vemurafenib was evaluated in a double-blind, randomized (1:1), placebo-controlled, multicenter trial (IMspire150; NCT02908672) conducted in 514 patients. Randomization was stratified by geographic location (North America vs. Europe vs. Australia, New Zealand, and others) and baseline lactate dehydrogenase (LDH) [less than or equal to upper limit of normal (ULN) vs. greater than ULN].

Eligible patients were required to have previously untreated unresectable or metastatic BRAF V600 mutation-positive melanoma as detected by a locally available test and centrally confirmed with the FoundationOne™ assay. Patients were excluded if they had history of autoimmune disease; administration of a live, attenuated vaccine within 28 days prior to randomization; administration of systemic immunostimulatory agents within 4 weeks or systemic immunosuppressive medications within 2 weeks prior to randomization; and active or untreated CNS metastases.

Intravenous atezolizumab was initiated after patients received a 28-day treatment cycle of cobimetinib 60 mg orally once daily (21 days on/7 days off) and vemurafenib 960 mg orally twice daily Days 1-21 and 720 mg orally twice daily Days 22-28. Patients received intravenous atezolizumab 840 mg intravenous infusion over 60 minutes every 2 weeks in combination with cobimetinib 60 mg orally once daily and vemurafenib 720 mg orally twice daily, or placebo in combination with cobimetinib 60 mg orally once daily and vemurafenib 960 mg orally twice daily. Treatment continued until disease progression or unacceptable toxicity. There was no crossover at the time of disease progression. Tumor assessments were performed every 8 weeks (± 1 week) for the first 24 months and every 12 weeks (± 1 week) thereafter.

The major efficacy outcome measure was investigator-assessed progression-free survival (PFS) per RECIST v1.1. Additional efficacy outcomes included PFS assessed by an independent central review, investigator-assessed ORR, OS, and DOR.

The median age of the study population was 54 years (range: 22–88), 58% of patients were male, 95% were White, a baseline ECOG performance status of 0 (77%) or 1 (23%), 33% had elevated LDH, 94% had metastatic disease, 60% were Stage IV (M1C), 56% had less than three metastatic sites at baseline, 3% had prior treatment for brain metastases, 30% had liver metastases at baseline, and 14% had received prior adjuvant systemic therapy. Based on central testing, 74% were identified as having a V600E mutation, 11% as having V600K mutation, and 1% as having V600D or V600R mutations.

Efficacy results are summarized in Table 30 and Figure 8. Patients had a median survival follow up time of 18.9 months.

Figure 8: Kaplan-Meier Plot for Progression-Free Survival in IMspire150

At a pre-specified analysis at the time of the primary analysis of PFS, the OS data were not mature. The median OS was 28.8 months with 93 (36%) deaths in the intravenous atezolizumab plus cobimetinib and vemurafenib arm, and 25.1 months with 112 (43%) deaths in the placebo plus cobimetinib and vemurafenib arm. The hazard ratio for OS was 0.85 (95% CI: 0.64, 1.11) and the p-value was 0.2310.