Prescription Drugs

CLINICAL PHARMACOLOGY Mechanism Of Action Obinutuzumab is a monoclonal antibody that targets the CD20 antigen expressed on the surface of pre-B and mature B lymphocytes. Upon binding to CD20, obinutuzumab mediates B-cell lysis through (1) engagement of immune effector cells, (2) by directly activating intracellular death signaling pathways (direct cell death), and/or (3) activation of the complement cascade. The immune effector cell mechanisms include antibody-dependent cellular cytotoxicity (ADCC) and antibodydependent cellular phagocytosis. As an antibody with reduced fucose content, obinutuzumab induces greater ADCC activity than rituximab in vitro using human cancer cell lines. Obinutuzumab also demonstrated an increased ability to induce direct cell death when compared to rituximab. Obinutuzumab binds to FcγRIII using purified proteins with a higher affinity than rituximab. Obinutuzumab and rituximab bind with similar affinity to overlapping epitopes on CD20. Pharmacodynamics In patients with CLL, GAZYVA caused CD19 B-cell depletion (defined as CD19 B cell counts < 0.07 x 109/L). Initial CD19 B cell recovery was observed in some patients approximately 9 months after the last GAZYVA dose. At 18 months of follow-up, some patients remain B cell depleted. Although the depletion of B cells in the peripheral blood is a measurable pharmacodynamic effect, it is not directly correlated with the depletion of B-cells in solid organs or in malignant deposits. B cell depletion has not been shown to be directly correlated to clinical response. Cardiac Electrophysiology The potential effects of GAZYVA on the QTc interval have not been studied. Pharmacokinetics The pharmacokinetic parameters of obinutuzumab after 100 mg on day 1 and 900 mg on day 2 of Cycle 1, 1000 mg on day 8 and 15 of Cycle 1, and 1000 mg on day 1 of Cycles 2.6 for CLL and after 1000 mg on day 1, 8 and 15 of Cycle 1, 1000 mg on day 1 of Cycles 2-6 or Cycles 2-8, and then 1000 mg every 2 months for up to 2 years for NHL are provided in Table 10. The dosing regimen is within the linear pharmacokinetic behavior of obinutuzumab. Table 10 Obinutuzumab Measures of Exposure PK Measure CLLa Relapsed or refractory FLa First line FL in combination with chemotherapy GAZYVA + Bendamustinea GAZYVA + CHOP or CVPb Cmax, μg/mL 466.3 (35) 553.5 (32) 513.4 (28) 676.4 (30) Ctrough, μg/mL 192.5 (78) 295 (56) 255 (46) 395 (44) AUC, μg/mL*day 8701 (51) 11362 (41) 10088 (35) 10723 (37) Results are presented as geometric mean (% Coefficient of Variation). a Induction Cycle 6 of a 28-day cycle; b Induction Cycle 8 of a 21-day cycle. Elimination The elimination of obinutuzumab is comprised of a linear clearance pathway and a time-dependent non-linear clearance pathway. As GAZYVA treatment progresses, the impact of the time-dependent pathway diminishes in a manner suggesting target-mediated drug disposition (TMDD) and saturation of the TMDD at the end of the treatment cycle at the proposed clinical dose regimen. The pharmacokinetic properties of obinutuzumab in patients with CLL and NHL are provided in Table 11. Table 11 Pharmacokinetic Parameters of Obinutuzumab CLL NHL Distribution Volume of Distributiona, L 4.1 (20) 4.3 (21) Elimination Terminal Half-life, days 25.5 (48) 35.3 (35) Clearance, L/day 0.11 (53) 0.08 (41) Parameters are presented as geometric mean (% Coefficient of Variation). a At steady state. Specific Populations Age (median [range]: 63 [22, 89] years) and baseline creatinine clearance (CrCL) (median [range] 84 [22, >120] mL/min) did not affect the pharmacokinetics of GAZYVA. In patients with CrCL ≤ 30 mL/min, the pharmacokinetics of GAZYVA was unaffected. GAZYVA has not been studied in patients with hepatic impairment. The volume of distribution and steady-state clearance increased with body weight; however, the expected change in exposure does not warrant a dose modification. Clinical Studies Chronic Lymphocytic Leukemia GAZYVA was evaluated in a three-arm, open-label, active-controlled, randomized, multicenter trial (CLL11; NCT01010061) in 781 patients with previously untreated CD20+ CLL requiring treatment who had coexisting medical conditions or reduced renal function as measured by creatinine clearance (CrCl) < 70 mL/min. Patients with CrCl < 30 mL/min, active infections, positive hepatitis B (HBsAg or anti-HBc positive; patients positive for anti-HBc could be included if hepatitis B viral DNA was not detectable) and hepatitis C serology, or immunization with live virus vaccine within 28 days prior to randomization were excluded from the trial. Patients were treated with chlorambucil control (Arm 1), GAZYVA in combination with chlorambucil (Arm 2), or rituximab product in combination with chlorambucil (Arm 3). The safety and efficacy of GAZYVA was evaluated in a Stage 1 comparison of Arm 1 vs. Arm 2 in 356 patients and a Stage 2 comparison of Arm 2 vs. Arm 3 in 663 patients. The majority of patients received 1000 mg of GAZYVA on days 1, 8 and 15 of the first cycle, followed by treatment on the first day of 5 subsequent cycles (total of 6 cycles, 28 days each). The first dose of GAZYVA was divided between day 1 (100 mg) and day 2 (900 mg) [see DOSAGE AND ADMINISTRATION], which was implemented in 140 patients. Chlorambucil was given orally at 0.5 mg/kg on day 1 and day 15 of all treatment cycles (1 to 6). In CLL11, the median age was 73 years, 62% were male, and 95% were Caucasian. Sixty-five percent had a CrCl < 70 mL/min and 76% had multiple coexisting medical conditions. Twenty-two percent of patients were Binet stage A, 42% were stage B, and 36% were stage C. The median estimated CrCl was 62 mL/min. Eighty-one percent of patients treated with GAZYVA in combination with chlorambucil received all 6 cycles compared to 89% of patients in the rituximab product treated arm and 67% in the chlorambucil alone arm. In the Stage 1 analysis of CLL11, the median progression-free survival (PFS) in the GAZYVA in combination with chlorambucil arm was 27.2 months and 11.2 months in the chlorambucil alone arm (median observation time 22.8 months) as assessed by independent review and is consistent with investigator-assessed PFS. The median overall survival (OS) was not yet reached with a total of 46 deaths: 22 (9%) in the GAZYVA in combination with chlorambucil arm and 24 (20%) in the chlorambucil arm. The hazard ratio for OS was 0.41 (95% CI: 0.23-0.74). In the Stage 2 analysis of CLL11, the median PFS was 26.7 months in the GAZYVA arm and 14.9 months in the rituximab product arm with a median observation time of 18.7 months (HR: 0.42, 95% CI: 0.33-0.54, p-value < 0.0001). These results were assessed by independent review and are consistent with investigator-assessed PFS. Minimal residual disease (MRD) was evaluated using allele-specific oligonucleotide polymerase chain reaction (ASO-PCR). The cutoff for a negative status was one CLL cell per 104 leukocytes in the sample (i.e., an MRD value of < 10-4 was considered negative). Among patients who achieved complete response (CR) and complete response with incomplete marrow recovery (CRi; 94 patients in the GAZYVA arm and 34 patients in the rituximab product arm), 18 patients (19%) had negative MRD in the bone marrow in the GAZYVA arm compared to 2 patients (6%) in the rituximab product arm. Out of the patients who achieved CR and CRi, 39 patients (41%) in the GAZYVA arm, and 4 patients (12%) in the rituximab product arm were MRD negative in peripheral blood samples collected at least 3 months after the end of treatment. Efficacy results are shown in Table 12, and the Kaplan-Meier curves for Stage 1a Overall Survival and Stage 2 PFS are shown in Figures 1 and 2, respectively. Table 12 Efficacy Results from CLL11 Endpoint Stage 1 of CLL11 Stage 2 of CLL11 GAZYVA + Chlorambucil* n = 238 Chlorambucil n = 118 GAZYVA + Chlorambucil* n = 333 Rituximab product + Chlorambucil n = 330 Median Progression- Free Survivala 27.2 months 11.2 months 26.7 months 14.9 months (HR 0.19 [0.14; 0.27], p-value < 0.0001 stratified log-rank test) (HR 0.42 [0.33; 0.54], p-value < 0.0001 stratified log-rank test) Overall Response Rateb 78.2% 33.1% 79.6% 66.3% Complete Response 28.2% 0 26.1% 8.8% Complete Response with Incomplete Marrow Recovery 2.5% 1.7% 2.1% 1.5% Partial Response 45.0% 30.5% 48.6% 54.1% Nodular Partial Response 2.5% 0.8% 2.7% 1.8% Median Duration of Response 22.4 months 4.7 months 19.6 months 9.7 months Overall Survival HR 0.41 [0.23; 0.74] Not Yet Mature a As defined by independent review. Investigator-assessed PFS was consistent with data from independent review. b Defined as best overall response rate (ORR = CR + CRi + PR + nPR). *All Stage 1 GClb patients (n = 238) were included in the Stage 2 GClb population (n = 333). Figure 1 Kaplan-Meier Curve of Overall Survival in Patients with CLL in CLL11 (Stage 1) Figure 2 Kaplan-Meier Curve of Progression-Free Survival in Patients with CLL in CLL11 (Stage 2) Follicular Lymphoma GADOLIN GADOLIN (NCT01059630) is an open-label, multicenter, randomized study including 321 patients with follicular lymphoma (FL) who had no response to or have progressed during or within 6 months of rituximab product or a rituximab product -containing regimen. These patients were randomized to receive either bendamustine alone (n = 166) or GAZYVA in combination with bendamustine (n = 155) for 6 cycles, each of 28 days duration. Patients in the GAZYVA plus bendamustine arm who did not have disease progression [patients with a complete response (CR), partial response (PR) or stable disease (SD)] at the end of the 6 cycles continued receiving GAZYVA monotherapy for 2 years. Patients were stratified according to the type of refractoriness to rituximab product (refractory to rituximab product monotherapy versus rituximab product in combination with chemotherapy) and the number of prior therapies (≤ 2 versus > 2). GAZYVA was given by intravenous infusion as a flat dose of 1000 mg on Days 1, 8 and 15 of Cycle 1, on Day 1 of Cycles 2.6, and then every 2 months until disease progression for up to 2 years. Bendamustine was given intravenously on Days 1 and 2 for all treatment cycles (1.6) at 90 mg/m2/day when given in combination with GAZYVA or 120 mg/m2/day when given alone. In GADOLIN, patients had a median age of 63 years, 88% were Caucasian, and 56% were male. Thirty-four percent had bulky disease (> 6 cm), 15% had at least one B-symptom at baseline and 95% had an ECOG performance status of 0.1 at baseline. The median time since initial diagnosis was 3 years and the median number of prior therapies was 2 (range 1 to 10). Forty-six percent of patients received 1 prior therapy and 33% of patients received 2 prior therapies. Twenty percent of patients were refractory to prior rituximab product monotherapy, 37% of patients were refractory to prior rituximab product plus chemotherapy induction treatment, and 41% of patients were refractory to rituximab product maintenance treatment received following rituximab product plus chemotherapy induction. Seventy-nine percent of patients were refractory to both rituximab product and an alkylating agent during any prior regimen (double refractory). The primary objective of the study was to evaluate PFS as determined by an independent review committee (IRC). Median observation time was 21.1 months. The median PFS in the bendamustine arm was 13.8 months. Median PFS was not reached in the GAZYVA plus bendamustine arm (PFS HR = 0.48, 95% CI: 0.34-0.68; stratified log-rank test p-value < 0.0001). The investigator assessed PFS result was consistent with the IRC-assessed PFS. The median investigator-assessed PFS in the bendamustine arm was 13.7 months and the median in the GAZYVA containing arm was 29.2 months (PFS HR = 0.48, 95% CI: 0.35-0.67; stratified log-rank test p-value < 0.0001). Efficacy results are summarized in Table 13. Kaplan-Meier curves for PFS are shown in Figure 3. An analysis conducted with 24.1 months of median observation time revealed that the median overall survival was not yet reached in either arm. Kaplan-Meier curves for OS are shown in Figure 4. Table 13 Efficacy Results from GADOLINa, b Endpoint GADOLIN GAZYVA + Bendamustine followed by GAZYVA monotherapy n = 155 Bendamustine n = 166 Median Progression-Free Survival (months) Not Reached 13.8 (HR = 0.48 [0.34; 0.68], p-value < 0.0001 by stratified log-rank test) Best Overall Responsec 78.7% 74.7% Complete Response 15.5% 18.7% Partial Response 63.2% 56.0% Median duration of response (months) Not Reached 11.6 a Based on FL population. b As defined by independent review. c Best response of CR/PR within 12 months of study start. Figure 3 Kaplan-Meier Curve of Progression-Free Survival in Patients with FL Figure 4 Kaplan-Meier Curve of Overall Survival in Patients with FL GALLIUM GALLIUM (NCT01332968) is a multicenter, open-label, randomized study including 1202 patients with previously untreated, stage II bulky, III or IV FL. Patients were randomized 1:1 to receive either GAZYVA (n = 601) or rituximab product (n = 601) in combination with chemotherapy (CHOP, CVP, or bendamustine) for 6.8 cycles. Patients were stratified by chemotherapy (selected by each site; all patients at that site received the chosen chemotherapy regimen), FLIPI (Follicular Lymphoma International Prognostic Index) risk group and geographic region. Patients with at least PR to combination therapy received monotherapy with GAZYVA (1000 mg) or rituximab product every two months until disease progression or for a maximum of two years. The study excluded patients with follicular lymphoma grade 3b or transformed disease; patients having an ANC < 1500 / μL, platelets < 75,000 / μL, or CrCl < 40 mL/min; and patients with hepatic transaminases > 2.5 x upper limit of normal unless attributable to lymphoma. GAZYVA was given by intravenous infusion as a flat dose of 1000 mg on Days 1, 8 and 15 of cycle 1 and Day 1 of subsequent treatment cycles. GAZYVA and bendamustine were given in six 28-day cycles. Bendamustine was administered at 90 mg/m2/day on Days 1 and 2 of each cycle, with prednisone 100 mg orally or equivalent on Day 1 of Cycle 1. GAZYVA and CHOP were given in six 21-day cycles. Subsequently, two additional cycles of GAZYVA were given for a total of 8 GAZYVA cycles. CHOP consisted of cyclophosphamide 750 mg/m2 intravenously, doxorubicin 50 mg/m2, and vincristine 1.4 mg/m2 (maximum dose, 2 mg) on Day 1 and prednisone 100 mg orally on Days 1-5. GAZYVA and CVP were given in eight 21-day cycles. CVP consisted of cyclophosphamide 750 mg/m2 intravenously and vincristine 1.4 mg/m2 (maximum dose, 2 mg) on Day 1 and prednisone 100 mg orally on Days 1-5. Patients had a median age of 59 years, 81% were Caucasian, and 53% were female; 7% had Stage II, 35% had Stage III, and 56% had Stage IV disease, with 44% having bulky disease (≥ 7 cm) overall; 79% had a FLIPI score of > 2; and 97% had an ECOG performance status of 0.1. The chemotherapy was bendamustine in 57%, CHOP in 33%, and CVP in 10% of patients. Efficacy was based on PFS per IRC, with a median observation time of 38 months. Upon interim analysis, the risk of progression or death was significantly reduced in the GAZYVA containing arm compared to the rituximab product containing arm (Table 14). Kaplan-Meier curves for PFS are shown in Figure 5. Overall response and complete remission rates were similar. Table 14 Efficacy in Previously Untreated Follicular Lymphoma (GALLIUM) Endpoint per IRC GAZYVA + chemotherapy followed by GAZYVA monotherapy n = 601 Rituximab product + chemotherapy followed by rituximab product monotherapy n = 601 Progression-Free Survival a 108 (18%) 141 (23%) Number of events (%) HR = 0.72 [95% CI: 0.56, 0.93], p-value = 0.0118 b Overall Response Rate c 91% 88% Complete Remission Rate c 28% 27% a Investigator-assessed PFS was consistent with data from independent review. b Stratified log-rank test c After completion of combination therapy. Assessed by CT without positron emission tomography. Figure 5 Kaplan-Meier Curves of Progression Free Survival in Patients with Previously Untreated FL

Find Lowest Prices on GAZYVAR® (obinutuzumab) Injection, for Intravenous Use WARNING HEPATITIS B VIRUS REACTIVATION and PROGRESSIVE MULTIFOCAL LEUKOENCEPHALOPATHY Hepatitis B Virus (HBV) reactivation, in some cases resulting in fulminant hepatitis, hepatic failure, and death, can occur in patients receiving CD20-directed cytolytic antibodies, including GAZYVA. Screen all patients for HBV infection before treatment initiation. Monitor HBV-positive patients during and after treatment with GAZYVA. Discontinue GAZYVA and concomitant medications in the event of HBV reactivation [see WARNINGS AND PRECAUTIONS]. Progressive Multifocal Leukoencephalopathy (PML) including fatal PML, can occur in patients receiving GAZYVA [see WARNINGS AND PRECAUTIONS]. DESCRIPTION GAZYVA (obinutuzumab) is a humanized anti-CD20 monoclonal antibody of the IgG1 subclass. It recognizes a specific epitope of the CD20 molecule found on B cells. The molecular mass of the antibody is approximately 150 kDa. GAZYVA is produced by mammalian cell (CHO) suspension culture. GAZYVA was engineered for reduced fucose content as compared to a typical IgG1 produced in CHO cells. GAZYVA is a sterile, clear, colorless to slightly brown, preservative-free liquid concentrate for intravenous administration. GAZYVA is supplied at a concentration of 25 mg/mL in 1000 mg single-dose vials. The product is formulated in 20 mM L-histidine/L-histidine hydrochloride, 240 mM trehalose, 0.02% poloxamer 188. The pH is 6.0.

INDICATIONS Chronic Lymphocytic Leukemia (CLL) GAZYVA, in combination with chlorambucil, is indicated for the treatment of patients with previously untreated chronic lymphocytic leukemia [see Clinical Studies]. Follicular Lymphoma (FL) GAZYVA, in combination with bendamustine followed by GAZYVA monotherapy, is indicated for the treatment of patients with follicular lymphoma who relapsed after, or are refractory to, a rituximab-containing regimen [see Clinical Studies]. GAZYVA, in combination with chemotherapy followed by GAZYVA monotherapy in patients achieving at least a partial remission, is indicated for the treatment of adult patients with previously untreated stage II bulky, III or IV follicular lymphoma [see Clinical Studies]. DOSAGE AND ADMINISTRATION Recommended Dosage Regimen Premedicate before each infusion [see Recommended Premedication For Infusion Reactions]. Provide prophylactic hydration and anti-hyperuricemics to patients at high risk of tumor lysis syndrome [see Recommended Premedication For Infusion Reactions and WARNINGS AND PRECAUTIONS]. Administer only as an intravenous infusion through a dedicated line [see Preparation And Administration]. Do not administer as an intravenous push or bolus. Monitor blood counts at regular intervals. GAZYVA should only be administered by a healthcare professional with appropriate medical support to manage severe infusion reactions that can be fatal if they occur [see WARNINGS AND PRECAUTIONS]. Chronic Lymphocytic Leukemia Each dose of GAZYVA is 1000 mg, administered intravenously, with the exception of the first infusions in Cycle 1, which are administered on day 1 (100 mg) and day 2 (900 mg). Table 1 Dose of GAZYVA to be Administered During Six 28-Day Treatment Cycles for Patients with CLL Day of treatment cycle Dose of GAZYVA Rate of infusion Cycle 1 (loading doses) Day 1 100 mg Administer at 25 mg/hr over 4 hours. Do not increase the infusion rate. Day 2 900 mg If no infusion reaction occurred during the previous infusion, administer at 50 mg/hr. The rate of the infusion can be escalated in increments of 50 mg/hr every 30 minutes to a maximum rate of 400 mg/hr. If an infusion reaction occurred during the previous infusion, administer at 25 mg/hr. The rate of infusion can be escalated in increments of up to 50 mg/hr every 30 minutes to a maximum rate of 400 mg/hr. Day 8 1000 mg If no infusion reaction occurred during the previous infusion and the final infusion rate was 100 mg/hr or faster, infusions can be started at a rate of 100 mg/hr and increased by 100 mg/hr increments every 30 minutes to a maximum of 400 mg/hr. If an infusion reaction occurred during the previous infusion, administer at 50mg/hr. The rate of infusion can be escalated in increments of 50mg/hr every 30 minutes to a maximum rate of 400mg/hr. Day 15 1000 mg Cycles 2–6 Day 1 1000 mg If a planned dose of GAZYVA is missed, administer the missed dose as soon as possible and adjust dosing schedule to maintain the time interval between doses. If appropriate, patients who do not complete the Day 1 Cycle 1 dose may proceed to the Day 2 Cycle 1 dose. Follicular Lymphoma Each dose of GAZYVA is 1000 mg administered intravenously according to Table 2. For patients with relapsed or refractory FL, administer GAZYVA in combination with bendamustine in six 28-day cycles. Patients who achieve stable disease, complete response, or partial response to the initial 6 cycles should continue on GAZYVA 1000 mg as monotherapy for up to two years. For patients with previously untreated FL, administer GAZYVA with one of the following chemotherapy regimens: Six 28-day cycles in combination with bendamustine Six 21-day cycles in combination with CHOP, followed by 2 additional 21-day cycles of GAZYVA alone Eight 21-day cycles in combination with CVP Patients with previously untreated FL who achieve a complete response or partial response to the initial 6 or 8 cycles should continue on GAZYVA 1000 mg as monotherapy for up to two years. Table 2 Dose of GAZYVA to be Administered During 6-8 Treatment Cycles, Followed by GAZYVA Monotherapy for Patients with FL Day of treatment cycle Dose of GAZYVA Rate of infusion Cycle 1 (loading doses) Day 1 1000 mg Administer at 50 mg/hr. The rate of the infusion can be escalated in 50 mg/hr increments every 30 minutes to a maximum of 400 mg/hr. Day 8 1000 mg If no infusion reaction or an infusion reaction of Grade 1 occurred during the previous infusion and the final infusion rate was 100 mg/hr or faster, infusions can be started at a rate of 100 mg/hr and increased by 100 mg/hr increments every 30 minutes to a maximum of 400 mg/hr. If an infusion reaction of Grade 2 or higher occurred during the previous infusion, administer at 50 mg/hr. The rate of infusion can be escalated in increments of 50 mg/hr every 30 minutes to a maximum rate of 400 mg/hr. Day 15 1000 mg Cycles 2–6 or 2-8 Day 1 1000 mg Monotherapy Every two months for up to two years 1000 mg If a planned dose of GAZYVA is missed, administer the missed dose as soon as possible. During GAZYVA and chemotherapy treatment, adjust the dosing schedule accordingly to maintain the time interval between chemotherapy cycles. During monotherapy, maintain the original dosing schedule for subsequent doses. Monotherapy should be initiated approximately two months after the last dose of GAZYVA administered during the induction phase. Management Of Infusion Reactions In CLL And FL Patients If a patient with CLL or FL experiences an infusion reaction of any grade during infusion, adjust the infusion as follows [see WARNINGS AND PRECAUTIONS]: Grade 4 (life-threatening): Stop infusion immediately and permanently discontinue GAZYVA therapy. Grade 3 (severe): Interrupt infusion and manage symptoms. Upon resolution of symptoms, consider restarting GAZYVA infusion at no more than half the previous rate (the rate being used at the time that the infusion reaction occurred) and, if patient does not experience any further infusion reaction symptoms, infusion rate escalation may resume at the increments and intervals as appropriate for the treatment cycle dose. Permanently discontinue treatment if patients experience a Grade 3 infusion-related symptom at rechallenge. For CLL patients only, the Day 1 infusion rate may be increased back up to 25 mg/hr after 1 hour but not increased further. Grade 1.2 (mild to moderate): Reduce infusion rate or interrupt infusion and treat symptoms. Upon resolution of symptoms, continue or resume infusion and, if patient does not experience any further infusion reaction symptoms, infusion rate escalation may resume at the increments and intervals as appropriate for the treatment cycle dose. For CLL patients only, the Day 1 infusion rate may be increased back up to 25 mg/hr after 1 hour but not increased further. Recommended Premedication For Infusion Reactions Premedication to reduce the risk of infusion reactions is outlined in Table 3 [see WARNINGS AND PRECAUTIONS]. Hypotension may occur during GAZYVA intravenous infusions. Consider withholding antihypertensive treatments for 12 hours prior to and throughout each GAZYVA infusion and for the first hour after administration [see WARNINGS AND PRECAUTIONS]. Table 3 Premedication for GAZYVA Infusion to Reduce Infusion-Related Reactions (IRR) Day of Treatment Cycle Patients requiring premedication Premedication Administration Cycle 1: CLL Day 1, Day 2 FL Day 1 All patients Intravenous glucocorticoid: 20 mg dexamethasone or 80 mg methylprednisolone1,2 Completed at least 1 hour prior to GAZYVA infusion. 650–1000 mg acetaminophen At least 30 minutes before GAZYVA infusion. anti-histamine (e.g., 50 mg diphenhydramine) All subsequent infusions, CLL or FL All patients 650–1000 mg acetaminophen At least 30 minutes before GAZYVA infusion. Patients with an IRR (Grade 1-2) with the previous infusion 650–1000 mg acetaminophen At least 30 minutes before GAZYVA infusion. anti-histamine (e.g., 50 mg diphenhydramine) Patients with a Grade 3 IRR with the previous infusion OR with a lymphocyte count > 25 x 109/L prior to next treatment Intravenous glucocorticoid: 20 mg dexamethasone or 80 mg methylprednisolone1 Completed at least 1 hour prior to GAZYVA infusion. 650–1000 mg acetaminophen At least 30 minutes before GAZYVA infusion. anti-histamine (e.g., 50 mg diphenhydramine) Tumor Lysis Syndrome Prophylaxis Patients with high tumor burden, high circulating absolute lymphocyte counts (greater than 25 x 109/L) or renal impairment are considered at risk of tumor lysis syndrome and should receive prophylaxis. Premedicate with anti-hyperuricemics (e.g., allopurinol or rasburicase) and ensure adequate hydration prior to start of GAZYVA therapy. Continue prophylaxis prior to each subsequent GAZYVA infusion, as needed [see WARNINGS AND PRECAUTIONS]. Antimicrobial Prophylaxis Patients with Grade 3 to 4 neutropenia lasting more than one week are strongly recommended to receive antimicrobial prophylaxis until resolution of neutropenia to Grade 1 or 2. Antiviral and antifungal prophylaxis should be considered. Treatment Interruption For Toxicity Consider treatment interruption if patients experience an infection, Grade 3 or 4 cytopenia, or a ≥ Grade 2 non-hematologic toxicity. Preparation And Administration Preparation Prepare the solution for infusion, using aseptic technique, as follows: Inspect visually for any particulate matter and discoloration prior to administration. Dilute into a 0.9% sodium chloride PVC or non-PVC polyolefin infusion bag. Do not use other diluents such as dextrose (5%). Chronic Lymphocytic Leukemia Preparation of solution for infusion on day 1 (100 mg) and day 2 (900 mg) of Cycle 1: Withdraw 40 mL of GAZYVA solution from the vial. Dilute 4 mL (100 mg) of GAZYVA into a 100 mL 0.9% sodium chloride infusion bag for immediate administration. Dilute the remaining 36 mL (900 mg) into a 250 mL 0.9% sodium chloride infusion bag at the same time for use on day 2 and store at 2°C to 8°C (36°F to 46°F) for up to 24 hours. After allowing the diluted bag to come to room temperature, use immediately. Clearly label each infusion bag. Preparation of solution for infusion on day 8 and 15 of Cycle 1 and day 1 Cycles 2.6: Withdraw 40 mL of GAZYVA solution from the vial. Dilute 40 mL (1000 mg) into a 250 mL 0.9% sodium chloride infusion bag. Follicular Lymphoma Preparation of solution for infusion: Withdraw 40 mL of GAZYVA solution from the vial. Dilute 40 mL (1000 mg) into a 250 mL 0.9% sodium chloride infusion bag. Mix diluted solution by gentle inversion. Do not shake or freeze. For microbiological stability, the diluted GAZYVA infusion solution should be used immediately. Dilute under appropriate aseptic conditions. If not used immediately, the solution may be stored in a refrigerator at 2°C to 8°C (36°F to 46°F) for up to 24 hours prior to use. The product can be administered at a final concentration of 0.4 mg/mL to 4 mg/mL. Administration For CLL And FL Patients Administer as an intravenous infusion only. Do not administer as an intravenous push or bolus. Do not mix GAZYVA with other drugs. No incompatibilities between GAZYVA and polyvinylchloride (PVC) or non-PVC polyolefin bags and administration sets have been observed [see HOW SUPPLIED]. HOW SUPPLIED Dosage Forms And Strengths 1000 mg/40 mL (25 mg/mL) single-dose vial. Storage And Handling GAZYVA 1000 mg/40 mL (25 mg/mL) single-dose vials containing preservative-free solution (NDC 50242-070-01) are stable at 2°C to 8°C (36°F to 46°F). Do not use beyond expiration date stamped on carton. Protect GAZYVA vials from light. DO NOT FREEZE. DO NOT SHAKE. For the diluted product, chemical and physical stability have been demonstrated in 0.9% NaCl at concentrations of 0.4 mg/mL to 20 mg/mL for 24 hours at 2°C to 8°C (36°F to 46°F) followed by 48 hours (including infusion time) at room temperature (≤ 30°C/86°F). GAZYVA does not contain antimicrobial preservatives. Therefore, care must be taken to ensure that the solution for infusion is not microbiologically compromised during preparation. The solution for infusion should be used immediately. If not used immediately, the prepared solution may be stored up to 24 hours at 2 to 8°C. No incompatibilities between GAZYVA and polyvinyl chloride or polyolefin infusion materials have been observed in concentration ranges from 0.4 mg/mL to 20.0 mg/mL after dilution of GAZYVA with 0.9% sodium chloride. Manufactured by: Genentech, Inc. A Member of the Roche Group, South San Francisco, CA. Revised: Nov 2017

PATIENT INFORMATION Advise patients to seek immediate medical attention for any of the following: Signs and symptoms of infusion reactions including dizziness, nausea, chills, fever, vomiting, diarrhea, breathing problems, or chest pain [see WARNINGS AND PRECAUTIONS and ADVERSE REACTIONS]. Symptoms of tumor lysis syndrome such as nausea, vomiting, diarrhea, and lethargy [see WARNINGS AND PRECAUTIONS and ADVERSE REACTIONS]. Signs of infections including fever and cough [see WARNINGS AND PRECAUTIONS and ADVERSE REACTIONS]. Symptoms of hepatitis including worsening fatigue or yellow discoloration of skin or eyes [see WARNINGS AND PRECAUTIONS]. New or changes in neurological symptoms such as confusion, dizziness or loss of balance, difficulty talking or walking, or vision problems [see WARNINGS AND PRECAUTIONS]. Advise patients of the need for: Periodic monitoring of blood counts [see WARNINGS AND PRECAUTIONS and ADVERSE REACTIONS]. Avoid vaccinations with live viral vaccines [see WARNINGS AND PRECAUTIONS]. Patients with a history of hepatitis B infection (based on the blood test) should be monitored and sometimes treated for their hepatitis [see WARNINGS AND PRECAUTIONS]. Advise pregnant women of potential fetal B-cell depletion [see Use In Specific Populations].

OVERDOSE There has been no experience with overdose in human clinical trials. For patients who experience overdose, treatment should consist of immediate interruption or reduction of GAZYVA and supportive therapy. CONTRAINDICATIONS GAZYVA is contraindicated in patients with known hypersensitivity reactions (e.g., anaphylaxis) to obinutuzumab or to any of the excipients, or serum sickness with prior obinutuzumab use [see WARNINGS AND PRECAUTIONS Section].

SIDE EFFECTS The following adverse reactions are discussed in greater detail in other sections of the label: Hepatitis B reactivation [see WARNINGS AND PRECAUTIONS] Progressive multifocal leukoencephalopathy [see WARNINGS AND PRECAUTIONS] Infusion reactions [see WARNINGS AND PRECAUTIONS] Tumor lysis syndrome [see WARNINGS AND PRECAUTIONS] Infections [see WARNINGS AND PRECAUTIONS] Neutropenia [see WARNINGS AND PRECAUTIONS] Thrombocytopenia [see WARNINGS AND PRECAUTIONS] Clinical Trial 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 practice. Summary Of Clinical Trial Experience In Chronic Lymphocytic Leukemia The data described in Tables 4-5 below are based on a safety population of 773 previously untreated patients with CLL. Patients were treated with chlorambucil alone, GAZYVA in combination with chlorambucil, or rituximab in combination with chlorambucil. The Stage 1 analysis compared GAZYVA in combination with chlorambucil vs. chlorambucil alone, and Stage 2 compared GAZYVA in combination with chlorambucil vs. rituximab in combination with chlorambucil. Adverse reactions rates and laboratory abnormalities from the Stage 2 phase are presented below and are consistent with the rates in Stage 1. In addition to the adverse reactions observed in Stage 2, in Stage 1 back pain (5% vs. 2%), anemia (12% vs. 10%) and cough (10% vs. 7%) were observed at a higher incidence in the obinutuzumab treated patients. The incidence of Grade 3-4 back pain ( < 1% vs. 0%), cough (0% vs. < 1%) and anemia (5% vs. 4%) was similar in both treatment arms. With regard to laboratory abnormalities, in Stage 1 hyperkalemia (33% vs. 18%), creatinine increased (30% vs. 20%) and alkaline phosphatase increased (18% vs. 11%) were observed at a higher incidence in patients treated with obinutuzumab with similar incidences of Grade 3-4 abnormalities between the two arms. Patients received three 1000 mg doses of GAZYVA on the first cycle and a single dose of 1000 mg once every 28 days for 5 additional cycles in combination with chlorambucil (6 cycles of 28 days each in total). In the last 140 patients enrolled, the first dose of GAZYVA was split between day 1 (100 mg) and day 2 (900 mg) [see DOSAGE AND ADMINISTRATION]. In total, 81% of patients received all 6 cycles (of 28 days each) of GAZYVA-based therapy. The most common adverse reactions (incidence ≥ 10%) observed in patients with CLL in the GAZYVA containing arm were infusion reactions, neutropenia, thrombocytopenia, anemia, pyrexia, cough, nausea, and diarrhea. The most common Grade 3-4 adverse reactions (incidence ≥ 10%) observed in patients with CLL in the GAZYVA containing arm were neutropenia, infusion reactions, and thrombocytopenia. Table 4 : Summary of Adverse Reactions Reported in ≥ 5% of Patients with CLL and at Least 2% Greater in the GAZYVA Treated Arm (Stage 2) Adverse Reactions System Organ Class GAZYVA + Chlorambucil n = 336 Rituximab + Chlorambucil n = 321 All Grades % Grades 3-4 % All Grades % Grades 3-4 % Injury, poisoning and procedural complications Infusion reactions 66 20 38 4 Blood and lymphatic system disordersa Neutropenia 38 33 32 28 Thrombocytopenia 14 10 7 3 Leukopenia 6 4 2 < 1 General disorders and administration site conditions Pyrexia 9 < 1 7 < 1 Gastrointestinal disorders Diarrhea 10 2 8 < 1 Constipation 8 0 5 0 Infections and infestations Nasopharyngitis 6 < 1 3 0 Urinary tract infection 5 1 2 < 1 aAdverse reactions reported under “Blood and lymphatic system disorders” reflect those reported by investigator as clinically significant. Table 5 : Post-Baseline Laboratory Abnormalities by CTCAE Grade in ≥ 5% of Patients with CLL and at Least 2% Greater in the GAZYVA Treated Arm (Stage 2) Laboratory Abnormalities GAZYVA + Chlorambucil n = 336 Rituximab + Chlorambucil n = 321 All Grades % Grades 3-4 % All Grades % Grades 3-4 % Hematology Neutropenia 76 46 69 41 Lymphopenia 80 39 50 16 Leukopenia 84 35 62 16 Thrombocytopenia 48 13 40 8 Anemia 39 10 37 10 Chemistry Hypocalcemia 37 3 32 < 1 Hypokalemia 14 1 10 < 1 Hyponatremia 26 7 18 2 AST/SGOT increased 27 2 21 < 1 ALT/SGPT increased 28 2 21 1 Hypoalbuminemia 23 < 1 16 < 1 Summary Of Clinical Trial Experience In Non-Hodgkin Lymphoma The safety of GAZYVA was evaluated based on a safety population of 392 patients with indolent NHL, of whom 81% had FL. In the population of patients with FL, the profile of adverse reactions was consistent with the overall indolent NHL population. Patients were treated with either GAZYVA in combination with bendamustine, followed by GAZYVA monotherapy in patients that have not progressed, or with bendamustine alone. Patients randomized to the GAZYVA + bendamustine arm received three weekly 1000 mg doses of GAZYVA in the first cycle and a single dose of 1000 mg once every 28 days for 5 additional cycles in combination with bendamustine 90 mg/m² on Days 1 and 2 in all 6 cycles. Patient randomized to the bendamustine alone arm received 120 mg/m² on Days 1 and 2. This regimen continued for 6 cycles of 28 days in duration. For patients who did not progress on GAZYVA in combination with bendamustine, a single dose of 1000 mg GAZYVA monotherapy was given every two months until progression or for a maximum of two years. During combination therapy with GAZYVA and bendamustine, 79% of patients received all 6 treatment cycles of GAZYVA and 76% received all 6 treatment cycles of bendamustine compared to 67% of patients in the bendamustine alone arm. The most common adverse reactions (incidence ≥ 10%) observed in patients with iNHL in the GAZYVA containing arm were infusion reactions, neutropenia, nausea, fatigue, cough, diarrhea, constipation, pyrexia, thrombocytopenia, vomiting, upper respiratory tract infection, decreased appetite, arthralgia, sinusitis, anemia, asthenia and urinary tract infection. The most common Grade 3-4 adverse reactions (incidence ≥ 10%) observed in patients with iNHL in the GAZYVA containing arm were neutropenia, thrombocytopenia and infusion reactions. Table 6 :Summary of Adverse Reactions Reported in ≥ 5% of Patients with Indolent NHL and at Least 2% Greater in the GAZYVA plus Bendamustine Followed by GAZYVA Monotherapy Treated Arm Adverse Reactions System Organ Class GAZYVA + Bendamustine followed by GAZYVA monotherapy n = 194 Bendamustine n = 198 All Grades % Grades 3-4 % All Grades % Grades 3-4 % Injury, Poisoning and Procedural Complications Infusion related reactionsa 69 11 63 6 Blood and Lymphatic System Disorders Neutropenia 35 33 28 26 Gastrointestinal Disorders Constipation 19 0 16 0 Dyspepsia 5 0 3 0 General Disorders and Administration Site Conditions Pyrexia 18 1 14 0 Asthenia 11 1 8 0 Infections and Infestations Upper Respiratory Tract Infection 13 2 8 1 Sinusitis 12 1 5 0 Urinary Tract Infection 10 3 6 0 Nasopharyngitis 9 0 4 0 Musculoskeletal and Connective Tissue Disorders Arthralgia 12 0 5 0 Pain in Extremity 9 1 4 0 Respiratory, Thoracic and Mediastinal Disorders Cough 26 0 17 0 Nasal Congestion 7 0 2 0 Skin and Subcutaneous Tissue Disorders Pruritus 9 0 6 0 aDefined as any related adverse reaction that occurred during or within 24 hours of infusion. During the monotherapy period with GAZYVA, the most common adverse reactions in patients with iNHL were cough (15%), upper respiratory tract infections (12%), neutropenia (11%), sinusitis (10%), diarrhea (8%), infusion related reactions (8%), nausea (8%), fatigue (8%), bronchitis (7%), arthralgia (7%), pyrexia (6%), nasopharyngitis (6%), and urinary tract infections (6%). The most common Grade 3-4 adverse reactions during the monotherapy period were neutropenia (10%), and anemia, febrile neutropenia, thrombocytopenia, sepsis, upper respiratory tract infection, and urinary tract infection (all at 1%). Table 7 :Post-Baseline Laboratory Abnormalities by CTCAE Grade in ≥ 5% of Patients with iNHL and at Least 2% Greater in the GAZYVA plus Bendamustine Followed by GAZYVA Monotherapy Treated Arma Laboratory Abnormalities GAZYVA + Bendamustine followed by GAZYVA monotherapy n = 194 Bendamustine n = 198 All Grades % Grades 3-4 % All Grades % Grades 3-4 % Hematology Neutropenia 75 52 77 42 Leukopenia 86 47 88 34 Lymphopenia 99 93 99 85 Chemistry Hypocalcemia 38 2 26 2 Hypophosphatemia 41 7 38 7 ALT/SGPT increased 35 1 31 4 Elevated creatinine 87 4 92 2 Creatinine Clearance (decreased) 58 6 61 4 aTwo percent different in either the All Grades or Grade 3-4 Lab Abnormalities. In the monotherapy phase of treatment with GAZYVA, the most frequently reported hematological laboratory abnormalities were lymphopenia (80%), leukopenia (63%), low hemoglobin (50%) and neutropenia (46%). The most frequently reported hematological Grade 3-4 laboratory abnormalities during the monotherapy period were lymphopenia (52%), neutropenia (27%) and leukopenia (20%). In the monotherapy phase of treatment with GAZYVA, the most frequently reported chemistry laboratory abnormalities were elevated creatinine (69%), decreased creatinine clearance (43%), hypophosphatemia (25%), AST/SGOT increased (24%) and ALT/SGPT increased (21%). The most frequently reported chemistry Grade 3-4 laboratory abnormalities during the monotherapy period were hypophosphatemia (5%) and hyponatremia (3%). Infusion Reactions Chronic Lymphocytic Leukemia The incidence of infusion reactions was 65% with the first infusion of GAZYVA. The incidence of Grade 3 or 4 infusion reactions was 20% with 7% of patients discontinuing therapy. The incidence of reactions with subsequent infusions was 3% with the second 1000 mg and < 1% thereafter. No Grade 3 or 4 infusion reactions were reported beyond the first 1000 mg infused. Of the first 53 patients receiving GAZYVA on the trial, 47 (89%) experienced an infusion reaction. After this experience, study protocol modifications were made to require pre-medication with a corticosteroid, antihistamine, and acetaminophen. The first dose was also divided into two infusions (100 mg on day 1 and 900 mg on day 2). For the 140 patients for whom these mitigation measures were implemented, 74 patients (53%) experienced a reaction with the first 1000 mg (64 patients on day 1, 3 patients on day 2, and 7 patients on both days) and < 3% thereafter [see DOSAGE AND ADMINISTRATION]. Non-Hodgkin Lymphoma Overall, 69% of patients experienced an infusion reaction (all grades) during treatment with GAZYVA in combination with bendamustine. The incidence of Grade 3-4 infusion reactions was 11%. In Cycle 1, the incidence of infusion reactions (all grades) was 55% in patients receiving GAZYVA in combination with bendamustine with Grade 3-4 infusion reactions reported in 9%. In patients receiving GAZYVA in combination with bendamustine, the incidence of infusion reactions was highest on Day 1 (38%), and gradually decreased on Days 2, 8 and 15 (25%, 7% and 4%, respectively). During Cycle 2, the incidence of infusion reactions was 24% in patients receiving GAZYVA in combination with bendamustine and decreased with subsequent cycles. During GAZYVA monotherapy, infusion reactions (all grades) were observed in 8% of patients. No grade 3-4 infusion reactions were reported during GAZYVA monotherapy. Overall, 2% of patients experienced an infusion reaction leading to discontinuation of GAZYVA. Neutropenia Chronic Lymphocytic Leukemia The incidence of neutropenia reported as an adverse reaction was 38% in the GAZYVA treated arm and 32% in the rituximab treated arm, with the incidence of serious adverse events being 1% and < 1%, respectively (Table 4). Cases of late-onset neutropenia (occurring 28 days after completion of treatment or later) were 16% in the GAZYVA treated arm and 12% in the rituximab treated arm. Non-Hodgkin Lymphoma The incidence of neutropenia was higher in the GAZYVA plus bendamustine arm (38%) compared to the arm treated with bendamustine alone (32%). Cases of prolonged neutropenia  (3%) and late onset neutropenia (7%) were also reported in the GAZYVA plus bendamustine arm. Infection Chronic Lymphocytic Leukemia The incidence of infections was similar between GAZYVA and rituximab treated arms. Thirty-eight percent of patients in the GAZYVA treated arm and 37% in the rituximab treated arm experienced an infection, with Grade 3–4 rates being 11% and 13%, respectively. Fatal events were reported in 1% of patients in both arms. Non-Hodgkin Lymphoma The incidence of infection was 66% in the GAZYVA plus bendamustine arm and 56% in the bendamustine arm, with Grade 3-4 events reported in 16% and 14%, respectively. Fatal events were reported in 3% of patients in the GAZYVA plus bendamustine arm and 4% in the bendamustine arm. Thrombocytopenia Chronic Lymphocytic Leukemia The overall incidence of thrombocytopenia reported as an adverse reaction was higher in the GAZYVA treated arm (14%) compared to the rituximab treated arm (7%), with the incidence of Grade 3–4 events being 10% and 3%, respectively (Table 4). The difference in incidences between the treatment arms is driven by events occurring during the first cycle. The incidence of thrombocytopenia (all grades) in the first cycle were 11% in the GAZYVA and 3% in the rituximab treated arms, with Grade 3–4 rates being 8% and 2%, respectively. Four percent of patients in the GAZYVA treated arm experienced acute thrombocytopenia (occurring within 24 hours after the GAZYVA infusion). The overall incidence of hemorrhagic events and the number of fatal hemorrhagic events were similar between the treatment arms, with 3 in the rituximab and 4 in the GAZYVA treated arms. However, all fatal hemorrhagic events in patients treated with GAZYVA occurred in Cycle 1. Non-Hodgkin Lymphoma The incidence of thrombocytopenia was lower in the GAZYVA plus bendamustine arm (15%) compared to the arm treated with bendamustine alone (24%). The incidence of hemorrhagic events in GAZYVA plus bendamustine treated patients compared to bendamustine alone was 11% and 10%, respectively. Grade 3-4 hemorrhagic events were similar in both treatment arms (5% in the GAZYVA plus bendamustine arm and 3% in the bendamustine arm). Tumor Lysis Syndrome: The incidence of Grade 3 or 4 tumor lysis syndrome in patients with CLL was 2% in the GAZYVA treated arm, and in patients with iNHL was 0.5% in the GAZYVA plus bendamustine treated arm. Musculoskeletal Disorders Chronic Lymphocytic Leukemia Adverse events related to musculoskeletal disorders (all events from the System Organ Class), including pain, have been reported in the GAZYVA treated arm with higher incidence than in the rituximab treated arm (18% vs. 15%). Non-Hodgkin Lymphoma Adverse events related to musculoskeletal disorders (all events from the System Organ Class), including pain, have been reported in the GAZYVA plus bendamustine treated arm with higher incidence than in the bendamustine alone arm (41% vs. 29%). Liver Enzyme Elevations: Hepatic enzyme elevations have occurred in CLL patients who received GAZYVA in clinical trials and had normal baseline hepatic enzyme levels (AST, ALT, and ALP). The events occurred most frequently within 24-48 hours of the first infusion. In some patients, elevations in liver enzymes were observed concurrently with infusion reactions or tumor lysis syndrome. In the pivotal CLL study, there was no clinically meaningful difference in overall hepatotoxicity adverse events between all arms (4% of patients in the GAZYVA treated arm). Medications commonly used to prevent infusion reactions (e.g., acetaminophen) may also be implicated in these events. Monitor liver function tests during treatment, especially during the first cycle. Consider treatment interruption or discontinuation for hepatotoxicity. Gastro-Intestinal Perforation: Cases of gastro-intestinal perforation have been reported in patients receiving GAZYVA, mainly in NHL. Immunogenicity Serum samples from patients with previously untreated CLL were tested during and after treatment for antibodies to GAZYVA. Of the GAZYVA treated patients with CLL, 7% (18/271) tested positive for anti-GAZYVA antibodies at one or more time points. In the pivotal iNHL trial, two out of 194 (1%) patients in the GAZYVA plus bendamustine arm tested positive for anti-GAZYVA antibodies at baseline and experienced infusion reactions. No patients with iNHL developed anti-GAZYVA antibodies during or following GAZYVA treatment. Neutralizing activity of anti-GAZYVA antibodies has not been assessed. Immunogenicity data are highly dependent on the sensitivity and specificity of the test methods used. Additionally, the observed incidence of a positive result in a test method may be influenced by several factors, including sample handling, timing of sample collection, drug interference, concomitant medication, and the underlying disease. Therefore, comparison of the incidence of antibodies to GAZYVA with the incidence of antibodies to other products may be misleading. Clinical significance of anti-GAZYVA antibodies is not known. Additional Clinical Trial Experience Worsening of Pre-existing Cardiac Conditions: Fatal cardiac events have been reported in patients treated with GAZYVA. DRUG INTERACTIONS No formal drug interaction studies have been conducted with GAZYVA.

WARNINGS Included as part of the "PRECAUTIONS" Section PRECAUTIONS Hepatitis B Virus Reactivation Hepatitis B virus (HBV) reactivation, in some cases resulting in fulminant hepatitis, hepatic failure, and death, can occur in patients treated with anti-CD20 antibodies such as GAZYVA. HBV reactivation has been reported in patients who are hepatitis B surface antigen (HBsAg) positive and also in patients who are HBsAg negative but are hepatitis B core antibody (anti-HBc) positive. Reactivation has also occurred in patients who appear to have resolved hepatitis B infection (i.e., HBsAg negative, anti-HBc positive, and hepatitis B surface antibody [anti-HBs] positive). HBV reactivation is defined as an abrupt increase in HBV replication manifesting as a rapid increase in serum HBV DNA level or detection of HBsAg in a person who was previously HBsAg negative and anti-HBc positive. Reactivation of HBV replication is often followed by hepatitis, i.e., increase in transaminase levels and, in severe cases, increase in bilirubin levels, liver failure, and death. Screen all patients for HBV infection by measuring HBsAg and anti-HBc before initiating treatment with GAZYVA. For patients who show evidence of hepatitis B infection (HBsAg positive [regardless of antibody status] or HBsAg negative but anti-HBc positive), consult physicians with expertise in managing hepatitis B regarding monitoring and consideration for HBV antiviral therapy. Monitor patients with evidence of current or prior HBV infection for clinical and laboratory signs of hepatitis or HBV reactivation during and for several months following treatment with GAZYVA. HBV reactivation has been reported for other CD20-directed cytolytic antibodies following completion of therapy. In patients who develop reactivation of HBV while receiving GAZYVA, immediately discontinue GAZYVA and any concomitant chemotherapy and institute appropriate treatment. Resumption of GAZYVA in patients whose HBV reactivation resolves should be discussed with physicians with expertise in managing hepatitis B. Insufficient data exist regarding the safety of resuming GAZYVA in patients who develop HBV reactivation. Progressive Multifocal Leukoencephalopathy JC virus infection resulting in progressive multifocal leukoencephalopathy (PML), which can be fatal, was observed in patients treated with GAZYVA. Consider the diagnosis of PML in any patient presenting with new onset or changes to preexisting neurologic manifestations. Evaluation of PML includes, but is not limited to, consultation with a neurologist, brain MRI, and lumbar puncture. Discontinue GAZYVA therapy and consider discontinuation or reduction of any concomitant chemotherapy or immunosuppressive therapy in patients who develop PML. Infusion Reactions GAZYVA can cause severe and life-threatening infusion reactions. Sixty-five percent of patients with CLL experienced a reaction to the first 1000 mg of GAZYVA infused. Thirty-eight percent of patients with relapsed or refractory NHL and 60% of patients with previously untreated NHL experienced a reaction on Day 1 of GAZYVA infusion. Infusion reactions can also occur with subsequent infusions. Symptoms may include hypotension, tachycardia, dyspnea, and respiratory symptoms (e.g., bronchospasm, larynx and throat irritation, wheezing, laryngeal edema). The most frequently reported symptoms include nausea, fatigue, chest discomfort, dyspnea, dizziness, vomiting, diarrhea, rash, hypertension, hypotension, flushing, headache, pyrexia, and chills [see ADVERSE REACTIONS]. Premedicate patients with acetaminophen, antihistamine, and a glucocorticoid. Institute medical management (e.g., glucocorticoids, epinephrine, bronchodilators, and/or oxygen) for infusion reactions as needed. Closely monitor patients during the entire infusion. Infusion reactions within 24 hours of receiving GAZYVA have occurred [see DOSAGE AND ADMINISTRATION]. For patients with any Grade 4 infusion reactions, including but not limited to anaphylaxis, acute lifethreatening respiratory symptoms, or other life-threatening infusion reaction: Stop the GAZYVA infusion. Permanently discontinue GAZYVA therapy. For patients with Grade 1, 2, or 3 infusion reactions: Interrupt GAZYVA for Grade 3 reactions until resolution of symptoms. Interrupt or reduce the rate of the infusion for Grade 1 or 2 reactions and manage symptoms [see DOSAGE AND ADMINISTRATION]. For patients with preexisting cardiac or pulmonary conditions, monitor more frequently throughout the infusion and the post-infusion period since they may be at greater risk of experiencing more severe reactions. Hypotension may occur as part of the GAZYVA infusion reaction. Consider withholding antihypertensive treatments for 12 hours prior to, during each GAZYVA infusion, and for the first hour after administration until blood pressure is stable. For patients at increased risk of hypertensive crisis, consider the benefits versus the risks of withholding their antihypertensive medication as is suggested here. Hypersensitivity Reactions Including Serum Sickness Hypersensitivity reactions have been reported in patients treated with GAZYVA. Signs of immediate-onset hypersensitivity included dyspnea, bronchospasm, hypotension, urticaria and tachycardia. Late-onset hypersensitivity diagnosed as serum sickness has also been reported, with symptoms that include chest pain, diffuse arthralgia and fever. Hypersensitivity reactions may be difficult to clinically distinguish from infusion related reactions. However, hypersensitivity very rarely occurs with the first infusion and, when observed, often occurs after previous exposure. If a hypersensitivity reaction is suspected during or after an infusion, the infusion must be stopped and treatment permanently discontinued. Patients with known hypersensitivity reactions to GAZYVA, including serum sickness, must not be retreated. Tumor Lysis Syndrome Tumor lysis syndrome (TLS), including fatal cases, has been reported in patients receiving GAZYVA. Patients with high tumor burden, high circulating lymphocyte count (> 25 x 109/L) or renal impairment are at greater risk for TLS and should receive appropriate tumor lysis prophylaxis with anti-hyperuricemics (e.g., allopurinol or rasburicase) and hydration prior to the infusion of GAZYVA [see DOSAGE AND ADMINISTRATION]. During the initial days of GAZYVA treatment, monitor the laboratory parameters of patients considered at risk for TLS. For treatment of TLS, correct electrolyte abnormalities, monitor renal function and fluid balance, and administer supportive care, including dialysis as indicated. Infections Fatal and serious bacterial, fungal, and new or reactivated viral infections can occur during and following GAZYVA therapy. When GAZYVA is administered with chemotherapy followed by GAZYVA monotherapy, Grade 3 to 5 infections have been reported in up to 8% of patients during combination therapy, up to 13% of patients during monotherapy, and up to 8% of patients after treatment [see ADVERSE REACTIONS]. Do not administer GAZYVA to patients with an active infection. Patients with a history of recurring or chronic infections may be at increased risk of infection. In GALLIUM, more Grade 3 to 5 infections were reported in the recipients of GAZYVA and bendamustine (117/410 patients, 29%), as compared to GAZYVA plus CHOP or CVP (43/281 patients, 15%). More fatal infections were reported in patients treated with GAZYVA and bendamustine (3%), as compared to GAZYVA plus CHOP or CVP (< 1%), including during the monotherapy phase and after completion of treatment. Neutropenia Severe and life threatening neutropenia, including febrile neutropenia, has been reported during treatment with GAZYVA. Monitor patients with Grade 3 to 4 neutropenia frequently with regular laboratory tests until resolution. Anticipate, evaluate, and treat any symptoms or signs of developing infection. Consider administration of granulocyte colony-stimulating factors (GCSF) in patients with Grade 3 or 4 neutropenia. Neutropenia can also be of late onset (occurring more than 28 days after completion of treatment) and/or prolonged (lasting longer than 28 days). Consider dose delays in the case of Grade 3 or 4 neutropenia. Patients with severe and long lasting (> 1 week) neutropenia are strongly recommended to receive antimicrobial prophylaxis until resolution of neutropenia to Grade 1 or 2. Consider antiviral and antifungal prophylaxis. Thrombocytopenia Severe and life threatening thrombocytopenia has been reported during treatment with GAZYVA in combination with chemotherapy. Fatal hemorrhagic events have been reported in patients with NHL and CLL treated with GAZYVA in combination with chemotherapy, including during Cycle 1. Monitor all patients frequently for thrombocytopenia and hemorrhagic events, especially during the first cycle. In patients with Grade 3 or 4 thrombocytopenia, monitor platelet counts more frequently until resolution and consider subsequent dose delays of GAZYVA and chemotherapy or dose reductions of chemotherapy. Transfusion of blood products (i.e., platelet transfusion) may be necessary. Consider withholding concomitant medications, which may increase bleeding risk (platelet inhibitors, anticoagulants), especially during the first cycle. Immunization The safety and efficacy of immunization with live or attenuated viral vaccines during or following GAZYVA therapy have not been studied. Immunization with live virus vaccines is not recommended during treatment and until B-cell recovery. Nonclinical Toxicology Carcinogenesis, Mutagenesis, Impairment Of Fertility No carcinogenicity or genotoxicity studies have been conducted with obinutuzumab. No specific studies have been conducted to evaluate potential effects on fertility; however, no adverse effects on male or female reproductive organs were observed in the 26-week repeat-dose toxicity study in cynomolgus monkeys. Use In Specific Populations Pregnancy Risk Summary GAZYVA is likely to cause fetal B-cell depletion based on findings from animal studies and the drug’s mechanism of action [see CLINICAL PHARMACOLOGY]. There are no data with GAZYVA use in pregnant women to inform a drug-associated risk. Monoclonal antibodies are transferred across the placenta. In animal reproduction studies, weekly intravenous administration of obinutuzumab to pregnant cynomolgus monkeys from day 20 of pregnancy until parturition which includes the period of organogenesis at doses with exposures up to 2.4 times the exposure at the clinical dose of 1000 mg monthly produced opportunistic infections and immune complex mediated hypersensitivity reactions. No embryo-toxic or teratogenic effects were observed in the monkeys (see Data). Consider the potential risk to the fetus when prescribing GAZYVA to a pregnant woman. The background risk of major birth defects and miscarriage for the indicated population is unknown; however, the estimated background risk in the U.S. general population of major birth defects is 2% to 4% and of miscarriage is 15% to 20% of clinically recognized pregnancies. Clinical Considerations Fetal/Neonatal Adverse Reactions GAZYVA is likely to cause fetal B-cell depletion (see Data). Avoid administering live vaccines to neonates and infants exposed to GAZYVA in utero until B-cell recovery occurs [see WARNINGS AND PRECAUTIONS and CLINICAL PHARMACOLOGY]. Data Animal Data In a pre- and post-natal development study, pregnant cynomolgus monkeys received weekly intravenous doses of 25 or 50 mg/kg obinutuzumab from day 20 of pregnancy until parturition, which includes the period of organogenesis. The high dose results in an exposure (AUC) that is 2.4 times the exposure in patients with CLL at the recommended label dose. There were no embryotoxic or teratogenic effects in animals. Secondary opportunistic infections, immune complex mediated hypersensitivity reactions, or a combination of both were observed in exposed dams. When first measured on day 28 postpartum, obinutuzumab was detected in offspring at levels in the range of maternal serum levels on the same day, and B-cells were completely depleted. The B-cell counts returned to normal levels, and immunologic function was restored within 6 months after birth. Obinutuzumab was measured in the milk of lactating cynomolgus monkeys on day 28 postpartum after weekly intravenous administration from day 20 of pregnancy until parturition. Concentrations in milk were approximately 0.04% and 0.13% of concentrations in maternal serum in the 25 and 50 mg/kg groups, respectively. Lactation Risk Summary There is no information regarding the presence of GAZYVA in human milk, the effects on the breastfed child, or the effects on milk production. However, low levels of obinutuzumab were present in the milk of lactating cynomolgus monkeys [see Pregnancy]. Human IgG is known to be present in human milk. Published data suggest that antibodies in breast milk do not enter the neonatal and child circulations in substantial amounts. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for GAZYVA and any potential adverse effects on the breastfed child from GAZYVA or from the underlying maternal condition. Pediatric Use The safety and effectiveness of GAZYVA in pediatric patients have not been established. Geriatric Use Chronic Lymphocytic Leukemia Of 336 patients with previously untreated CLL who received GAZYVA in combination with chlorambucil, 81% were 65 years and older, while 46% were 75 and older. Of the patients 75 years and older, 46% experienced serious adverse reactions and 7% experienced adverse reactions leading to death. Of the patients younger than 75, 33% experienced a serious adverse reaction and 2% an adverse reaction leading to death. No significant differences in efficacy were observed between younger and older patients [see Clinical Studies]. Non-Hodgkin Lymphoma Of 194 patients in GADOLIN with relapsed or refractory NHL treated with GAZYVA plus bendamustine, 44% were 65 and over, while 14% were 75 and over. In patients 65 and over, 52% of patients experienced serious adverse reactions and 26% experienced adverse reactions leading to treatment withdrawal while in patients under 65, 28% and 12% experienced serious adverse reactions and adverse reactions leading to treatment withdrawal, respectively. No clinically meaningful differences in efficacy were observed between these patients and younger patients in GADOLIN. Of the 691 patients in GALLIUM treated with GAZYVA plus chemotherapy as first-line therapy, 33% were 65 and over, while 7% were 75 and over. Of patients 65 and over, 63% experienced serious adverse reactions and 26% experienced adverse reactions leading to treatment withdrawal, while in patients under 65, 43% experienced serious adverse reactions and 13% had an adverse reaction leading to treatment withdrawal. No clinically meaningful differences in efficacy were observed between these patients and younger patients in GALLIUM.