Atezolizumab

IDFS event is defined as the time from randomization to the first occurrence of the following events: ipsilateral invasive breast tumor recurrence, ipsilateral local-regional invasive breast cancer recurrence, contralateral invasive breast cancer, distant recurrence, death from any cause.

TACE PFS is defined as the time from randomization to untreatable progression or TACE failure/refractoriness or any cause of death, whichever occurs first, as determined by the investigator (INV).

PFS was defined as the time from randomization to the first occurrence of progressive disease (PD) or death from any cause (whichever occurred first), as determined by an IRF according to Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1). PD was defined as at least a 20% increase in the sum of diameters (SOD) of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 millimeters (mm) or unequivocal progression of existing non-target lesions. Kaplan-Meier (KM) method was used to estimate median PFS.

An adverse event (AE) was any untoward medical occurrence in a clinical investigation participant administered a pharmaceutical product, regardless of causal attribution. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. Severity of AEs was graded using NCI CTCAE v5.0. Grade 3=Severe/medically significant but not immediately life-threatening, hospitalization/prolongation of hospitalization indicated; disabling; limiting self-care activities of daily living; Grade 4=Life-threatening consequences, urgent intervention indicated; Grade 5=Death related to AE.

PFS was defined as the time from randomization to the first occurrence of PD, as determined by an IRF according to Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1), or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the sum of diameters (SOD) of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 millimeters (mm) or unequivocal progression of existing non-target lesions. Kaplan-Meier (K-M) method was used to estimate median PFS.

PFS was defined as the time from randomization to the first occurrence of PD, as determined by an IRF according to RECIST v1.1, or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. K-M method was used to estimate median PFS.

PFS after randomization, defined as the time from randomization to the first occurrence of disease progression or death from any cause (whichever occurs first), as determined by the investigator according to RECIST v1.1

RFS is defined as the time from randomization to the first documented occurrence of intrahepatic or extrahepatic HCC as determined by an IRF, or death from any cause (whichever occurs first).

AE=untoward medical occurrence in participant administered a pharmaceutical product, regardless of causal attribution. AE=any unfavorable \& unintended sign, symptom/disease temporally associated with the use of pharmaceutical product, whether/not considered related to it. Severity was graded per National Cancer Institute Common Terminology Criteria for Adverse Events version 5.0 (NCI CTCAE v5.0). Grade 1=Mild; asymptomatic/mild symptoms; clinical/diagnostic observations only; or intervention not indicated; Grade 2=Moderate; minimal, local/non-invasive intervention indicated; or limiting age-appropriate instrumental activities of daily living; Grade 3=Severe/medically significant, but not immediately life-threatening; hospitalization/prolongation of hospitalization indicated; disabling; or limiting self-care activities of daily living; Grade 4=Life-threatening consequences/urgent intervention indicated; Grade 5=Death related to AE. Percentages have been rounded off.

AE=any untoward medical occurrence in a participant administered a pharmaceutical product, regardless of causal attribution. AE=any unfavorable and unintended sign, symptom/disease temporally associated with the use of a pharmaceutical product, whether/not considered related to it. Severity was graded according to NCI CTCAE v5.0. Grade 1=Mild; asymptomatic/mild symptoms; clinical/diagnostic observations only; or intervention not indicated; Grade 2=Moderate; minimal, local/non-invasive intervention indicated; or limiting age-appropriate instrumental activities of daily living (ADL); Grade 3=Severe/medically significant, but not immediately life-threatening; hospitalization/prolongation of hospitalization indicated; disabling; or limiting self-care ADL; Grade 4=Life-threatening consequences/urgent intervention indicated; Grade 5=Death related to AE. imAEs are events that resemble autoimmune diseases and are known side effects of immune checkpoint inhibitors.

PFS was defined as the time from randomization to the first occurrence of disease progression as determined locally by RECIST or death from any cause during treatment, whichever occurs first.

The incidence of serious adverse events (SAEs) related to atezolizumab.

pCR is defined as the absence of residual invasive cancer on hematoxylin and eosin evaluation of the complete resected breast specimen and all sampled regional lymph nodes following completion of neoadjuvant systemic therapy (NAST) (i.e., ypT0/is ypN0 in the current American Joint Committee on Cancer \[AJCC\] staging system, 8th edition). Treatment comparison was made using Cochran-Mantel-Haenszel test stratified by disease stage (T2 vs. T3-4) and hormone receptor status (estrogen receptor (ER) positive and/or progesterone receptor (PgR) positive vs. ER negative and PgR negative).

pCR is defined as the absence of residual invasive cancer on hematoxylin and eosin evaluation of the complete resected breast specimen and all sampled regional lymph nodes following completion of neoadjuvant systemic therapy (NAST) (i.e., ypT0/is ypN0 in the current American Joint Committee on Cancer \[AJCC\] staging system, 8th edition). Treatment comparison was made using Cochran-Mantel-Haenszel test stratified by disease stage (T2 vs. T3-4) and hormone receptor status (ER positive and/or PgR positive vs. ER negative and PgR negative).

Time from the date of randomization to the date of first documentation of disease progression or death due to any cause, whichever occurs first based on investigator assessment using the Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v 1.1)

Time from the date of randomization to the date of death due to any cause

IRF-assessed EFS was defined as the time from the date of randomization to any of the following events, whichever occurred first: disease progression (PD) per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1) that precluded surgery; local or distant disease recurrence (including occurrence of new primary NSCLC); or death due to any cause, as assessed by the IRF. PD was defined as at least a 20% increase in the sum of diameters (SOD) of target lesions, taking as reference the smallest SOD on study (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 millimeters (mm) or unequivocal progression of existing non-target lesions. Kaplan-Meier (K-M) method was used to estimate median IRF-assessed EFS.

IRF-assessed EFS was defined as the time from the date of randomization to any of the following events, whichever occurred first: PD per RECIST v1.1 that precluded surgery; local or distant disease recurrence (including occurrence of new primary NSCLC); or death due to any cause, as assessed by the IRF. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD on study (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. K-M method was used to estimate median IRF-assessed EFS.

OS was defined as the time from randomization to death from any cause.

PFS was defined as the time from randomization to the first occurrence of progressive disease (PD) or death from any cause whichever occurs first as determined by an IRF according to RECIST v1.1. PD: at least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum of diameters on study (including baseline). In addition to the relative increase of 20%, the sum of diameters must also demonstrate an absolute increase of \>/= 5 millimeters (mm).

OS was defined as the time from randomization to death from any cause.

PFS was defined as the time from randomization to the first occurrence of progressive disease (PD) or death from any cause whichever occurs first as determined by an IRF according to RECIST v1.1. PD: at least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum of diameters on study (including baseline). In addition to the relative increase of 20%, the sum of diameters must also demonstrate an absolute increase of \>/= 5 millimeters (mm).

OS was defined as time from randomization to death from any cause. Participants without a reported death event at the time of the analysis were censored on the date they were last known to be alive. If no post-baseline data were available, OS was censored at the date of randomization +1 day.

OS was defined as time from randomization to death from any cause. Participants without a reported death event at the time of the analysis were censored on the date they were last known to be alive. If no post-baseline data were available, OS was censored at the date of randomization +1 day.

Time from randomization until event

PFS is defined as the time from randomization to the first occurrence of PD, as determined by the investigator using RECIST v1.1, or death from any cause during the study, whichever occurs first. PD is defined as greater than or equal to (\>/=) 20 percent (%) relative increase and \>/=5 millimeter (mm) of absolute increase in the sum of diameters (SD) of target lesions (TLs), taking as reference the smallest SD recorded since treatment started, or appearance of 1 or more new lesions.

PFS is defined as the time from randomization to the first occurrence of PD, as determined by the investigator using RECIST v1.1, or death from any cause during the study, whichever occurs first. PD is defined as greater than or equal to (\>/=) 20 percent (%) relative increase and \>/=5 millimeter (mm) of absolute increase in the sum of diameters (SD) of target lesions (TLs), taking as reference the smallest SD recorded since treatment started, or appearance of 1 or more new lesions.

Number of participants with Pathologic Complete Response (pCR) Using American Joint Committee on Cancer (AJCC) Staging System in ITT Population. pCR is defined as eradication of invasive tumor from both breast and lymph nodes (ypT0/is ypN0). pCR was evaluated for each participant after neoadjuvant study treatment and surgery. Participants whose pCR assessment was missing will be counted as not achieving a pCR.

Number of participants with Pathologic Complete Response (pCR) Using American Joint Committee on Cancer (AJCC) Staging System in the subpopulation with programmed death-ligand1 (PD-L1)-positive tumor status(tumor-infiltrating immune cell \[IC\] IC1/2/3) . pCR is defined as eradication of invasive tumor from both breast and lymph nodes (ypT0/is ypN0). pCR was evaluated for each participant after neoadjuvant study treatment and surgery. Participants whose pCR assessment was missing will be counted as not achieving a pCR.

Investigator-assessed PFS is defined as the time from randomization to the occurrence of disease progression, as determined by the investigator from tumor assessments per RECIST v1.1, or death from any cause during the study, whichever occurs first.

Investigator-assessed PFS is defined as the time from randomization to the occurrence of disease progression, as determined by the investigator from tumor assessments per RECIST v1.1, or death from any cause during the study, whichever occurs first.

Overall Survival (OS) is defined as the time from randomization to death from any cause.

Overall Survival (OS) is defined as the time from randomization to death from any cause.

PFS was defined as the time from randomization to the first occurrence of PD, as determined by the investigator according to RECIST v1.1, or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the sum of diameters (SOD) of target lesions, taking as reference smallest sum on study, including baseline. In addition to the relative increase of 20%, the SOD must also demonstrate an absolute increase of at least 5 millimeters (mm).

PFS is defined as the time from randomization to the first documented disease progression as determined by the investigator with the use of RECIST v1.1, or death from any cause, whichever occurs first.

OS is defined as the time from randomization to death due to any cause.

OS is defined as the time from randomization to death due to any cause.

Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0), as at least 20% increase in the sum of the longest diameter of target lesions compared to baseline, or unequivocal progression in non-target lesion(s), or the appearance of new lesion(s).

OS is defined as the time from randomization to death from any cause.

PFS is defined as the time from randomization to the first occurrence of disease progression as determined by the investigator using RECIST v1.1 or death from any cause, whichever occurred first.

DFS was defined as the time from randomization to the first recurrence of NSCLC or occurrence of new primary NSCLC as determined by the investigator or death, whichever occurs first. Kaplan-Meier methodology was used to estimate the median DFS for each treatment arm.

DFS was defined as the time from randomization to the first recurrence of NSCLC or occurrence of new primary NSCLC as determined by the investigator or death, whichever occurs first. DFS was analyzed in participants with disease stage II-IIIA. Kaplan-Meier methodology was used to estimate the median DFS for each treatment arm.

DFS was defined as the time from randomization to the first recurrence of NSCLC or occurrence of new primary NSCLC as determined by the investigator or death, whichever occurs first. DFS was analyzed in PD-L1 ≥1% subpopulation within the Stage II-IIIA population. Kaplan-Meier methodology was used to estimate the median DFS for each treatment arm.

OS is defined as the time from randomization to death from any cause.

OS is defined as the time from randomization to death from any cause.

PFS was defined as the time from randomization to the occurrence of disease progression, as determined by investigators from tumor assessments per RECIST v1.1, or death from any cause, whichever occurred first.

PFS was defined as the time from randomization to the occurrence of disease progression, as determined by investigators from tumor assessments per RECIST v1.1, or death from any cause, whichever occurred first.

OS was defined as the time from the date of randomization to the date of death from any cause.

OS was defined as the time from the date of randomization to the date of death from any cause.

PFS is defined as the time between the date of randomization and the date of first documented disease progression or death, whichever occurs first, in the ITT population.

OS is defined as the time between the date of randomization and date of death from any cause in the ITT population.

Tumor response was assessed by the investigator according to RECIST v1.1. Disease Progression (PD) was defined as greater than or equal to (\>/=) 20 percent (%) relative increase in the sum of diameters (SoD) of all target lesions (TLs), taking as reference the smallest SoD on study, including baseline, and an absolute increase of \>/=5 millimeters (mm); \>/=1 new lesion(s); and/or unequivocal progression of existing non-TLs.

PFS was defined as the time from randomization to PD, as determined by the investigator per RECIST v1.1, or death from any cause, whichever occurred first. PD: \>/=20% relative increase in the SoD of all TLs, taking as reference the smallest SoD on study, including baseline, and an absolute increase of \>/=5 mm; \>/=1 new lesion(s); and/or unequivocal progression of non-TLs. Participants without PFS event were censored at the last tumor assessment date. Participants with no post-baseline tumor assessments were censored at the randomization date + 1 day. Participants with a PFS event who missed \>/=2 scheduled assessments immediately prior to the PFS event were censored at the last tumor assessment prior to the missed visits. Median PFS was estimated by Kaplan-Meier method and 95% confidence interval (CI) was assessed using the method of Brookmeyer and Crowley.

Percentage of participants who died of any cause was reported.

OS was defined as the time from randomization to death due to any cause. Participants who were not reported as having died at the date of analysis were censored at the date when they were last known to be alive. Participants who did not have post-baseline information were censored at the date of randomization + 1 day. Median OS was estimated by Kaplan-Meier method and 95% CI was assessed using the method of Brookmeyer and Crowley.

PFS is defined as the time between the date of randomization and the date of first documented disease progression as determined by the investigator according to RECIST v1.1 or death from any cause, whichever occurs first in the ITT-WT population.

OS is defined as the time between the date of randomization and date of death from any cause in the ITT-WT population.

Progression Free Survival (PFS), as Determined by the Investigator using Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) in Arm B versus Arm C in the T-effector (Teff)-high wild type (WT) population and the intent-to-treat (ITT)-WT population.

Percentage of participants who died among TC1/2/3 or IC1/2/3 subgroup of PP-ITT were reported. TC1 = presence of discernible programmed death-ligand 1 (PD-L1) staining of any intensity in \>/=1% and \<5% TCs; TC2: presence of discernible PD-L1 staining of any intensity in \>/=5% and \<50% TCs; TC3 = presence of discernible PD-L1 staining of any intensity in \>/=50% TCs; IC1 = presence of discernible PD-L1 staining of any intensity in ICs covering between \>/=1% and \<5% of tumor area occupied by tumor cells, associated intratumoral, and contiguous peri-tumoral desmoplastic stroma; IC2 = presence of discernible PD-L1 staining of any intensity in ICs covering between \>/=5% and \<10% of tumor area occupied by tumor cells, associated intratumoral, and contiguous peri-tumoral desmoplastic stroma; IC3 = presence of discernible PD-L1 staining of any intensity in ICs covering \>/=10% of tumor area occupied by tumor cells, associated intratumoral, and contiguous peri-tumoral desmoplastic stroma.

OS duration is defined as the difference in time from the date of randomization to the date of death due to any cause. Data for participants who were not reported as having died at the time of analysis were censored at the date they were last known to be alive. Participants who had no post-baseline information were censored at the date of randomization plus 1 day. OS was estimated using KM methodology.

OS duration is defined as the difference in time from the date of randomization to the date of death due to any cause. Data for participants who were not reported as having died at the time of analysis were censored at the date they were last known to be alive. Participants who had no post-baseline information were censored at the date of randomization plus 1 day. OS was estimated using KM methodology.

OS duration is defined as the difference in time from the date of randomization to the date of death due to any cause. Data for participants who were not reported as having died at the time of analysis were censored at the date they were last known to be alive. Participants who had no post-baseline information were censored at the date of randomization plus 1 day. OS was estimated using KM methodology.

OS duration is defined as the difference in time from the date of randomization to the date of death due to any cause. Data for participants who were not reported as having died at the time of analysis were censored at the date they were last known to be alive. Participants who had no post-baseline information were censored at the date of randomization plus 1 day. OS was estimated using KM methodology.

OS duration is defined as the difference in time from the date of randomization to the date of death due to any cause. Data for participants who were not reported as having died at the time of analysis were censored at the date they were last known to be alive. Participants who had no post-baseline information were censored at the date of randomization plus 1 day. OS was estimated using KM methodology.

OS duration is defined as the difference in time from the date of randomization to the date of death due to any cause. Data for participants who were not reported as having died at the time of analysis were censored at the date they were last known to be alive. Participants who had no post-baseline information were censored at the date of randomization plus 1 day. OS was estimated using KM methodology.

Response by Immune-Modified Response Evaluation Criteria in Solid Tumors (iRECIST).

Incidence of Adverse Events, Graded According to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Version (v) 5.0

The primary objective is to determine the relative efficacy of atezolizumab with or without tiragolumab based on progression-free survival (PFS) and select a promising treatment out of the two experimental regiments for further investigation in a future phase III trial compared with standard of care treatment. Progression-Free Survival (PFS) is defined as the time from randomization (or registration) to the earlier of progression or death due to any cause. Participants alive without disease progression are censored at date of last disease evaluation.

Clinical complete response (CCR), defined as the percentage of patients who have achieved complete response (CR), disappearance of all lesions according to RECIST 1.1 criteria (locally assessed by the PI) and no presence of residual disease assessed by biopsy at the end of consolidation phase (week 26).

Clinical response rate: Patients will be classified as responders (complete or partial responders) and non-responders based on: 1) the presence of residual disease on tumor biopsy and 2) CT or MRI scans post-treatment (week 26). The binomial proportion and its 95% confidence interval will be used to estimate the CCR rate. Logistic regression analysis will be used to evaluate the effect of baseline characteristics and other covariates with response rate.

The incidence and severity \[according to the National Cancer Institute-Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0 (v5.0)\] of all adverse events (AEs), related AEs, all SAEs, and related SAEs

Number and proportion of participants with any clinically significant change in vital signs (i.e., blood pressure, pulse rate, respiratory rate, body temperature) during the vaccine administration or within 60 minutes following administration

Participants preference was assessed based on the Question 1 of PPQ. Question 1 (All things considered, which route of administration did you prefer?) asks participants to report their preference for the route of administration (IV, SC, or no preference). A point estimate with associated 95% CI for the percentage of participants who preferred atezolizumab SC was calculated. Participants experiencing any of the following events: treatment withdrawal prior to eligibility for PPQ, or death without answering Question 1 of PPQ, or treatment not started; were excluded from the analysis set. Participants who answered Question 1 of the PPQ without having at least 2 consecutive administrations of treatment with each administration modality (SC and IV) were excluded from the analysis. Percentages have been rounded off. As planned, participant preference was summarized and presented by overall (all participants) and by randomized treatment sequence using FAS.

DFS-rate

No microscopic evidence (pT0/Tis/Cis) of residual disease in the bladder based on histological evaluation of the resected bladder specimen collected during cystectomy (post-treatment) \[Bladder Cohort\] \- No microscopic evidence (pT0/Tis/Cis) of residual disease in the renal pelvis or ureter in the resected sample collected during radical surgery for upper tract disease (post-treatment) \[UTUC Cohort\]

ynamic changes in T cell subpopulations (CD8 and/or CD3) measured in tumour samples collected pre- and post-treatment.

pCR is defined as no evidence of vital residual tumor cells on hematoxylin and eosin evaluation of the complete resected gastric/GEJ specimen and all sampled regional lymph nodes following completion of neoadjuvant systemic therapy (NAST), which will be reviewed by local pathologist..

A confirmed objective response rate (ORR) was defined as the percentage of participants with a confirmed objective response (OR), characterized by a complete response (CR) or a partial response (PR), on 2 consecutive occasions ≥ 4 weeks apart, as determined by the investigator per RECIST v1.1. CR was defined as the disappearance of all target and non-target lesions \& normalization of tumor marker level. Additionally, any pathological lymph nodes (whether target or non-target) must have a reduction in short axis to \<10 millimeters (mm). PR was defined as at least a 30% decrease in the sum of diameters (SOD) of all target lesions, taking as reference the baseline SOD, in the absence of CR. Percentages have been rounded off.

PFS is defined as the time from randomization to the first occurrence of disease progression as determined by the investigator according to RECIST v1.1 or death from any cause (whichever occurs first)

Objective response rate (ORR) was defined as the percentage of participants with a complete response (CR) or partial response (PR) on two consecutive occasions \>=4 weeks apart, as determined by the investigator according to Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1).

The primary endpoint for this study is overall response rate in PDL1 negative melanoma to combination anti-PD-L1 therapy and anti-VEGF therapy by RECIST criteria. The proportion of patients with complete response or partial response as best response to therapy will be summarized and presented with a two-sided, 90% Wald confidence interval.

The proportion of participants in each tumour-defined cohort who have a complete response (CR) or partial response (PR) to treatment, as defined by RECIST 1.1.

ORR was defined as the percentage of participants with a complete response (CR) defined as disappearance of all target lesions, or partial response (PR) defined as at least a 30% decrease in the sum of diameters of all target lesions, taking as reference the baseline sum of diameters, in the absence of CR, on two consecutive occasions \>= 4 weeks apart, as determined by the investigator according to Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1).

response rate will be assessed by MRI and endoscopy

PFS was defined as the time from randomization to the first occurrence of PD, as determined by the investigator according to RECIST v1.1, or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline) or unequivocal progression of existing non-target lesions. In addition to the relative increase of 20%, the SOD must also demonstrate an absolute increase of ≥5 mm. Kaplan-Meier (KM) methodology was used to estimate the median PFS.

Adverse events will be assessed (according to CTC-AE v4.0) during treatment

Major pathologic response was defined as ≤10% of viable tumor cells as scored by a pathologist, based on surgical resection as defined by prior studies. Percentages have been rounded off to the nearest decimal point.

with response determined according to RECIST v1.1

PFS was defined as the time from randomization to the first occurrence of disease progression or death from any cause, whichever occurred first, on the basis of investigator assessments. Progression was defined as at least a 20% increase in the sum of diameters of target lesions with an absolute increase of at least 5 millimeter (mm) or the appearance of one or more new lesions.

An adverse event is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An adverse event can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. Preexisting conditions which worsen during a study are also considered as adverse events.

Investigator-assessed objective response rate was defined as the proportion of participants who had a confirmed best overall response of either PR or CR per RECIST v1.1.

Investigator-assessed PFS by RECIST v1.1 was defined as the time from the first dose of study drug to the time of PD or death from any cause during the study, whichever occurred first.

Time to toxicity defined as any grade 3, 4 regimen-related non-hematologic toxicity, during the first 15 weeks of therapy. The method of Thall et al. used for safety monitoring.

NPR was defined as the percentage of participants with complete response (CR), partial response (PR) or stable disease (SD) as assessed by the Investigator according to Response Evaluation Criteria in Solid Tumors (RECIST), v1.1 or for malignant pleural mesothelioma according to Malignant Pleural Mesothelioma Response Evaluation Criteria. CR: Disappearance of all target lesions. PR: At least a 30% decrease in the sum of the diameters of all target and all new measurable lesions in the absence of CR. SD: Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease (PD). PD: At least a 20% increase in the sum of diameters of all target and all new measurable lesions. For prostate cancer according to Prostate Response Evaluation Criteria. CR: PSA \<5 ng/ml measured twice at least 3 weeks apart or PSA response: PSA \< 50% of the PSA reference value occurring at any time after treatment was initiated.

Tumor response was assessed by the IRF according to RECIST v1.1. CR was defined as disappearance of all target and non-target lesions and (if applicable) normalization of tumor marker levels. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to less than (\<) 10 millimeters (mm). PR was defined as greater than or equal to (≥) 30 percent (%) decrease in sum of longest diameter (LD) of target lesions in reference to Baseline sum LD. Response was to be confirmed ≥4 weeks after the initial assessment of CR or PR. The percentage of participants with a confirmed objective response of CR or PR was reported. The exact 95% confidence interval (CI) was calculated using the Clopper-Pearson method.

Tumor response was assessed by the IRF according to RECIST v1.1. CR was defined as disappearance of all target and non-target lesions and (if applicable) normalization of tumor marker levels. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to less than (\<) 10 millimeters (mm). PR was defined as greater than or equal to (≥) 30 percent (%) decrease in sum of longest diameter (LD) of target lesions in reference to Baseline sum LD. Response was to be confirmed ≥4 weeks after the initial assessment of CR or PR. The percentage of participants with a confirmed objective response of CR or PR was reported. The exact 95% confidence interval (CI) was calculated using the Clopper-Pearson method.

Tumor response was assessed by the investigator according to modified RECIST. CR was defined as disappearance of all target and non-target lesions and no new measurable or unmeasurable lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. PR was defined as ≥30% decrease in sum of LD of target lesions in reference to Baseline sum LD. Response was to be confirmed ≥4 weeks after the initial assessment of CR or PR. The percentage of participants with a confirmed objective response of CR or PR was reported. The exact 95% CI was calculated using the Clopper-Pearson method.

ORR was the percentage of participants whose confirmed best overall response was either a Partial Response (PR) or a Complete Response (CR) based upon the IRF assessment per RECIST v1.1. CR: disappearance of all target and non-target lesions. Any pathological lymph nodes (target or non-target) must have reduction in short axis to less than (\<) 10 millimeters (mm); PR:greater than (\>) or equal to (=) 30 percent (%) decrease from baseline in sum of diameters of target lesions, non-progressive disease (PD) non-target lesions and no new lesions. Results were reported by line of therapy and programmed death-ligand 1 (PD-L1) Expression Subgroup (tumor cell \[TC\]3 \[TC3\] or tumor-infiltrating immune cell \[IC\] 3 \[IC3\], TC3 or IC2/3, TC2/3 or IC2/3).

Progressive Disease (PD): at least a 20 percent (%) increase in the sum of diameters of target lesions, taking as reference the smallest sum on study, including baseline, and an absolute increase of at least 5 millimeters (mm); appearance of one or more new target or non-target lesions; or unequivocal progression of existing non-target lesions.

PFS was defined as the time from randomization to the first occurrence of PD or death due to any cause. PD: at least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study, including baseline, and an absolute increase of at least 5 mm; appearance of one or more new target or non-target lesions; or unequivocal progression of existing non-target lesions. Kaplan-Meier methodology was used to estimate PFS.

PD: at least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study, including baseline, and an absolute increase of at least 5 mm; appearance of one or more new target or non-target lesions; or unequivocal progression of existing non-target lesions.

PFS was defined as the time from randomization to the first occurrence of PD or death due to any cause. PD: at least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study, including baseline, and an absolute increase of at least 5 mm; appearance of one or more new target or non-target lesions; or unequivocal progression of existing non-target lesions. Kaplan-Meier methodology was used to estimate PFS.

Objective response was defined as a complete response (CR) or partial response (PR), as determined by investigator according to modified RECIST criteria. Modified RECIST was derived from RECIST v1.1 conventions and immune related response criteria. CR was defined as disappearance of all tumor lesions (target lesion \[TL\] and non-target lesion \[non-TL\]) and no new measurable or unmeasurable lesions, all lymph node short axes must be less than 10 millimeters (mm), and PR was defined as at least 30 percent (%) decrease in sum of diameter of TLs and all new measurable lesions since baseline in absence of CR, and both confirmed by consecutive assessment greater than or equal to 4 weeks from date first documented. Participants not meeting these criteria, including participants without at least one post-baseline response assessment were considered as non-responders.

If 6 participants have been enrolled and evaluated, and only 0 or 1 have experienced a DLT, the next participant will be enrolled at Dose Level 2

If 6 participants have been enrolled and evaluated, and only 0 or 1 have experienced a DLT, enrollment will be terminated, and accrual determined complete.

Incidence, nature, and severity of AEs graded according to the NCI CTCAE v5

The number of participants experiencing dose-limiting toxicities (DLTs) during the study period will be recorded, providing a measure of how frequently DLTs occur when iadademstat is combined with atezolizumab and SBRT.

The proportion of participants experiencing dose-limiting toxicities (DLTs), expressed as a percentage of the total participants, will be calculated. This measure aims to quantify the incidence rate of DLTs in the study population.

The severity of dose-limiting toxicities (DLTs) will be classified according to the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0. This measure will help assess the clinical significance and impact of DLTs experienced by the participants.

The number of participants experiencing adverse events (AEs) of any kind, regardless of causality, during the study period will be recorded. This outcome measure will provide insight into the overall safety profile of the combination treatment.

The proportion of participants experiencing adverse events (AEs), expressed as a percentage of the total participants, will be calculated. This measure aims to quantify the incidence rate of AEs in patients treated with iadademstat combined with atezolizumab and SBRT.

The severity of adverse events (AEs) will be classified according to the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0. This measure will help assess the clinical significance and impact of AEs experienced by the participants.

pCR was defined as the absence of any viable primary tumor at time of surgical resection, as determined by local pathologic review. The pCR rate was defined as the percentage of participants who achieved a pCR. pCR rate was calculated for each arm, along with the 95% confidence interval (CI) estimated using the Clopper-Pearson method and the 95% CI for difference in rates was estimated using the Wald method with continuity correction. Participants with missing or no pathologic response assessment were classified as non-responders. Percentages have been rounded off to the nearest whole number.

The maximum tolerated dose (MTD) of the atezolizumab in combination with BEGEV will be established in the first cycle of therapy, in order to determine the recommended phase II dose (RP2D). Patients will be accrued in 3 patients cohorts at each dose level, starting from level 1. Dose de-escalation will be performed following the standard 3+3 rule, registering any Dose Limiting Toxicity (DLT).

The assessment of CRR before ASCT will be performed by an independent radiologic review committee (IRRC) according to the Lugano classification response criteria (2014) and the LYmphoma Response to Immunomodulatory Therapy Criteria (LYRIC 2016). CRR will be defined as the proportion of patients in CR after the first 4 cycles of induction treatment, according to Lugano classification response Criteria and LYRIC 2016 criteria. Patients without response assessment (due to whatever reason) will be considered as non-responders.

Safety of H3K27M peptide vaccine administered with radiotherapy and Atezolizumab. Primary safety endpoint is the Regime Limiting Toxicity (RLT).

Immunogenicity (Immune response Yes/No) will be assessed for all evaluable patients. The primary immunogenicity endpoint is the presence of an H3K27M-specific T-cell response. H3K27M-specific T cell responses are measured on Peripheral Blood Mononuclear Cells (PBMC) using IFN-gamma ELISpot.

Calculated as the percentage of participants alive and without disease progression, as assessed by the Investigator using RECIST v1.1

he number of patients with AEs and SAEs, changes in laboratory values, vital signs, ECGs, and results of physician examinations graded according to the CTCAE v 5.0.

An unacceptable adverse event includes any Grade 3 or any Grade 4 toxicity that is not reversible within 2 weeks, any life-threatening event, or any treatment-related death. Also included are any grade 2 or higher serious autoimmune toxicities, particularly those affecting vital organs (e.g. cardiac, renal, CNS) if it occurs within 2 weeks of any protocol treatment.

Objective response rate (ORR) was defined as the percentage of participants with an objective response of complete response (CR) or partial response (PR) as determined by the investigator according to Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1). CR was defined as the disappearance of all target lesions and any pathological lymph nodes (whether target or non-target) that have a reduction in short axis to \< 10 millimeters (mm). PR was defined as at least a 30% decrease in the sum of diameters (SOD) of all target lesions, taking as reference the baseline SOD, in the absence of CR. Participants with missing or no response assessments were classified as non-responders. Percentages have been rounded off to the nearest whole number.

OR was defined as a complete response (CR) or partial response (PR) on two consecutive occasions ≥ 4 weeks apart during Stage 1 as determined by the investigator using RECIST v.1.1. Objective response rate (ORR) was defined as the percentage of participants with OR. CR was defined as the disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) have a reduction in short axis to \<10 millimeters (mm). PR was defined as at least a 30% decrease in the sum of diameters (SOD) of target lesions, taking as reference the baseline SOD. 95% confidence intervals (CI) for rates were constructed using Clopper-Pearson method. Percentages have been rounded off.

ORR is defined as the percentage of participants with confirmed objective response (OR). Confirmed OR is defined as complete response (CR) or partial response (PR) on two consecutive occasions ≥ 4 weeks apart, as determined by the investigator according to Response Evaluation Criteria in Solid Tumors (RECIST) v1.1. CR is defined as disappearance of all target lesions. PR is defined as at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters.

DCR is defined as the percentage of participants with CR, PR, or stable disease (SD) at 16 weeks. Per RECIST v1.1, CR is defined as disappearance of all target lesions. PR is defined as at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters. SD is defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for disease progression, taking as reference the smallest sum on study. Disease progression is defined as at least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study including baseline, or the appearance of one or more new lesions.

The first patient in each cohort and regimen will be observed for safety for one week after the administration of RO6874281and atezolizumab +-bevacizumab, prior to enrollment of additional patients in a cohort. The DLT will be counted for each dose separately and each patient will contribute one single representative data point.

The MTD is defined as the highest dose with less than 33% probability of dose limiting toxicity (DLT).

The recommended dose is defined as the lowest safe dose with the best likelihood for clinical benefit.

Objective response rate (ORR) defined as the number of patients who achieved an objective response (partial response (PR) plus complete response (CR)) confirmed 28 or more days later, as determined by the Investigator using RECIST v1.1 and modified RECIST criteria at any time during the study divided by the number of response-evaluable patients.

Tumor response assessment was performed by the investigator according to modified Lugano classification using PET/CT scan. CR was defined as a score of 1 (no uptake above background), 2 (uptake \</=mediastinum), or 3 (uptake \<mediastinum but \</=liver) with or without a residual mass on PET 5-PS, for lymph nodes and extralymphatic sites; no new lesions; no evidence of FDG-avid disease in bone marrow; and normal/IHC-negative bone marrow morphology. 90% confidence interval (CI) for percentage of responders was calculated using Clopper-Pearson method. All PET evaluable 1L FL and 1L DLBCL patients with at least one dose of atezolizumab were included in efficacy population.

Phase (Ph) 1a: Pre-dose on Day 1, Cycles 1-4, 8, 16, every eight cycles (Q8C), at discontinuation (DC), every 30 days up to 120 days (cycle length 21 days); Phase 1b without Chemotherapy: Pre-dose on Day 1, Cycles 1-4, 8, then Q8C, DC (cycle length 21 days); Phase 1b (Chemotherapy Cohorts and Q4W): Pre-dose on Day 1, Cycles 1-4, 8, 12 and 16, then DC (cycle length 21/28 days).

Phase 1b (without Chemotherapy): Pre-dose on Day 1, Cycles 1-4, 8, then Q8C, at DC, every 30 days up to 120 days (cycle length 21 days); Phase 1b (Chemotherapy Cohorts and Q4W): Pre-dose on Day 1, Cycles 1-4, 8, 12 and 16, then DC (cycle length 21/28 days).

Complete response (CR) was evaluated through use of PET-CT scans, using the Modified Lugano 2014 criteria. Response was determined by the IRC.

Primary end point was positron emission tomography (PET) CR at EOI by IRC according to modified Lugano classification using PET/CT scan. CR was defined as a score of 1 (no uptake above background), 2 (uptake less than or equal to \[\</=\] mediastinum), or 3 (uptake less than \[\<\] mediastinum but \</=liver) with or without a residual mass on PET 5-point scale (5-PS), for lymph nodes and extralymphatic sites; no new lesions; no evidence of fluorodeoxyglucose (FDG)-avid disease in bone marrow; and normal/immunohistochemistry (IHC)-negative bone marrow morphology. All PET evaluable 1L FL and 1L DLBCL participants with at least one dose of atezolizumab were included in efficacy population.

Seroconversion is defined as the presence of at least one of the following autoantibodies: anti-nuclear antibody, antidouble-stranded deoxyribose nucleic acid (DNA), cytoplasmic anti-neutrophil cytoplasmic antibody, and perinuclear anti-neutrophil cytoplasmic antibody.