Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r FL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and polatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and polatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and pinatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received obinutuzumab via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r FL and DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r FL and DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r FL and DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r FL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received obinutuzumab via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and pinatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and pinatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and polatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and polatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and polatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and pinatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and polatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and polatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and pinatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and polatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and polatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and pinatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and polatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and polatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and pinatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and polatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and polatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and pinatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r DLBCL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and polatuzumab vedotin at a dose of 2.4 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. RTX and polatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle, in the absence of any infusion-related adverse events. Participants who developed PD were treated with RTX at 375 mg/m^2 and pinatuzumab vedotin at 2.4 mg/kg via IV infusion on Day 1, beginning no later than 42 days after the last dose of the prior study treatment until a second PD event, clinical deterioration, and/or intolerance to the crossover treatment for up to a maximum of 1 year (maximum 17 cycles on an every-21-day schedule).

Participants with r/r FL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. In the absence of any infusion-related adverse events, RTX and polatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle for up to a maximum of 1 year (17 cycles on an every-21-day schedule) or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r FL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. In the absence of any infusion-related adverse events, RTX and polatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle for up to a maximum of 1 year (17 cycles on an every-21-day schedule) or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r FL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. In the absence of any infusion-related adverse events, RTX and polatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle for up to a maximum of 1 year (17 cycles on an every-21-day schedule) or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r FL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. In the absence of any infusion-related adverse events, RTX and polatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle for up to a maximum of 1 year (17 cycles on an every-21-day schedule) or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r FL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. In the absence of any infusion-related adverse events, RTX and polatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle for up to a maximum of 1 year (17 cycles on an every-21-day schedule) or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r FL received RTX at a dose of 375 mg/m^2 administered via IV infusion on Day 1 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first 2 cycles. In the absence of any infusion-related adverse events, RTX and polatuzumab were administered on the same day (Day 1) in subsequent cycles beginning with the third cycle for up to a maximum of 1 year (17 cycles on an every-21-day schedule) or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r FL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r FL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r FL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r FL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r FL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r FL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.

Participants with r/r DLBCL received obinutuzumab at a dose of 1000 mg via IV infusion on Days 1, 8, 15 and polatuzumab vedotin at a dose of 1.8 mg/kg administered via IV infusion on Day 2 for the first cycle. In the absence of any infusion-related adverse events, obinutuzumab and polatuzumab vedotin were administered on the same day (Day 1) in subsequent cycles beginning with the second cycle for up to a maximum of 8 cycles or significant toxicity, disease progression, or withdrawal from study.