A Dose Escalation and Expansion Study of Lomvastomig, a PD-1/TIM-3 Bispecific Antibody, in Participants With Advanced and/or Metastatic Solid Tumors

Phase 1

Completed

Conditions: Metastatic Melanoma
Solid Tumors
Non-small Cell Lung Cancer (NSCLC)
Esophageal Squamous Cell Carcinoma (ESCC)
Small Cell Lung Cancer (SCLC)

Interventions: Drug: Lomvastomig

Registration Number: NCT03708328

Lead Sponsor: Hoffmann-La Roche

Brief Summary: This is a first-in-human, open-label, multicenter, Phase I multiple-ascending dose (MAD) study of single agent lomvastomig (RO7121661), an anti PD-1 (programmed death-1) and TIM-3 (T-cell immunoglobulin and mucin domain 3) bispecific antibody, for participants with advanced and/or metastatic solid tumors. The study consists of 2 parts: Dose Escalation (Part A) and Expansion (Parts B1, B2, B3, B4, and B5). The Dose Escalation part will be conducted first to determine the maximum tolerated dose (MTD) and/or recommended dose for expansion (RDE) based on safety, tolerability, pharmacokinetic, and/or the pharmacodynamic profile of escalating doses of lomvastomig. The Expansion part will enroll tumor-specific cohorts to evaluate anti-tumor activity of the MTD and/or RDE of lomvastomig from Part A (Q2W) and to confirm safety and tolerability in participants with selected tumor types.

Detailed Description: Not available

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 134

Inclusion Criteria

General Inclusion Criteria:

Part A: Patient must have histologically or cytologically confirmed advanced and/or metastatic solid tumor malignancies for which standard curative or palliative measures do not exist, are no longer effective, or are not acceptable to the patient
Eastern Cooperative Oncology Group Performance Status 0-1
Measurable disease as defined by Response Evaluation Criteria in Solid Tumors (RECIST v1.1)
Fresh biopsies may be required
Negative HIV, hepatitis B, or hepatitis C test result
Women of childbearing potential and male participants must agree to remain abstinent or use contraceptive methods as defined by the protocol

Additional Specific Inclusion Criteria for Participants with Melanoma:

Histologically confirmed, unresectable stage III or stage IV melanoma
Previously treated with approved anti-programmed death-ligand 1 (PD-L1)/anti-programmed death-1 (PD-1) agents with or without approved anti-cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) therapy and up to one additional treatment regimen

Additional Specific Inclusion Criteria for Participants with Non-small Cell Lung Cancer (NSCLC) who Previously Received Treatment for Metastatic Disease:

Histologically confirmed advanced NSCLC
Previously treated with approved PD-L1/PD-1 inhibitors and platinum-based chemotherapy
Not more than 2 prior lines of treatment for metastatic disease are allowed prior to enrolling to the study
Participants must have experienced initial clinical benefit (stable disease or better) from most recent checkpoint inhibitor (CPI) therapy
Tumor PD-L1 expression as determined by immunohistochemistry assay of archival tumor tissue or tissue obtained at screening

Additional Specific Inclusion Criteria for Participants with Non-small Cell Lung Cancer (NSCLC) who Previously Did Not Receive Treatment for Metastatic Disease:

Histologically confirmed advanced NSCLC
Tumor PD-L1 expression as determined by immunohistochemistry assay of archival tumor tissue or tissue obtained at screening

Additional Specific Inclusion Criteria for Participants with Small Cell Lung Cancer (SCLC):

Histologically confirmed SCLC
Participants may have had prior chemotherapy, radiation therapy, or declined approved therapies for SCLC

Additional Specific Inclusion Criteria for Participants with Esophageal Squamous Cell Carcinoma (ESCC):

Participants whose major lesion was histologically confirmed as squamous cell carcinoma or adenosquamous cell carcinoma of the esophagus
Patients who have previously received not more than 1 prior line of treatment for metastatic disease prior to enrolling to the study

Exclusion Criteria

General Exclusion Criteria:

Pregnancy, lactation, or breastfeeding
Known hypersensitivity to any of the components of RO7121661
Active or untreated central nervous system (CNS) metastases
An active second malignancy
Evidence of concomitant diseases, metabolic dysfunction, physical examination findings, or clinical laboratory findings giving reasonable suspicion of a disease or condition that contraindicates the use of an investigational drug or that may affect the interpretation of the results or render the participant at high risk from treatment complications
Known active or uncontrolled bacterial, viral, fungal, mycobacterial, parasitic, or other infection
Treatment with oral or IV antibiotics within 2 weeks prior to Cycle 1 Day 1
Active or history of autoimmune disease or immune deficiency
Prior treatment with adoptive cell therapies, such as CAR-T therapies
Concurrent therapy with any other investigational drug <28 days or 5 half-lives of the drug, whichever is shorter, prior to the first RO7247669 administration
Regular immunosuppressive therapy
Radiotherapy within the last 4 weeks before start of study drug treatment, with the exception of limited palliative radiotherapy
Prior treatment with a T-cell immunoglobulin and mucin domain-3 (TIM-3) inhibitor

Additional Specific Exclusion Criteria for Participants with NSCLC who Previously Received Treatment for Metastatic Disease:

Patients with the following mutations, rearrangements, translocations are not eligible: epidermal growth factor receptor (EGFR); anaplastic lymphoma kinase (ALK); ROS proto-oncogene 1 (ROS1), BRAFV600E, and neurotrophic receptor tyrosine kinase (NTRK)

Additional Specific Exclusion Criteria for Participants with NSCLC who Did Not Previously Receive Treatment for Metastatic Disease:

Prior therapy for metastatic disease
Adjuvant anti-PD-1 or anti-PD-L1 therapy

Additional Specific Exclusion Criteria for Participants with Small-Cell Lung Cancer (SCLC):

Prior therapy with any immune CPIs (such as anti-PD-L1/PD-1, CTLA-4)

Additional Specific Exclusion Criteria for Participants with Esophageal Squamous Cell Carcinoma (ESCC):

Prior therapy with any immunomodulatory agents

Study & Design

Study Type: INTERVENTIONAL

Study Design: SEQUENTIAL

Arm && Interventions

Group	Intervention	Description
Dose Escalation Part A: Once Every 2 Weeks (Q2W)	Lomvastomig	Lomvastomig will be administered in treatment cycles once every 2 weeks (Q2W). Dose escalation will be carried out according to a modified continual reassessment method (mCRM) with escalation with overdose control (EWOC) design.
Expansion Part B1: Metastatic Melanoma Cohort	Lomvastomig	This cohort will comprise participants with checkpoint inhibitor (CPI) experienced, second line and beyond metastatic melanoma. The starting dose of lomvastomig for Expansion will be derived from the maximum tolerated dose (MTD)/recommended dose for expansion (RDE) and the best dosing schedule determined during Dose Escalation.
Expansion Part B2: NSCLC Cohort 1	Lomvastomig	This cohort will comprise participants with CPI and platinum experienced, second or third line PD-L1 positive non-small cell lung cancer (NSCLC). The starting dose of lomvastomig for Expansion will be derived from the MTD/RDE and the best dosing schedule determined during Dose Escalation.
Expansion Part B3: NSCLC Cohort 2	Lomvastomig	This cohort will comprise participants with PD-L1 high, cancer immunotherapy (CIT) naïve first line NSCLC. The starting dose of lomvastomig for Expansion will be derived from the MTD/RDE and the best dosing schedule determined during Dose Escalation. This cohort was not initiated and no participants were enrolled in it.
Expansion Part B4: SCLC Cohort	Lomvastomig	This cohort will comprise participants with CPI naïve small cell lung cancer (SCLC) with prior failure of, progression on, or intolerance to, standard therapy. The starting dose of lomvastomig for Expansion will be derived from the MTD/RDE and the best dosing schedule determined during Dose Escalation.
Expansion Part B5: ESCC Cohort	Lomvastomig	This cohort will comprise participants with CPI-naïve esophageal squamous cell carcinoma (ESCC). The starting dose of lomvastomig for Expansion will be derived from the MTD/RDE and the best dosing schedule determined during Dose Escalation.
Dose Escalation Part A: Once Every 2 Weeks (Q2W)	Lomvastomig	Lomvastomig will be administered in treatment cycles once every 2 weeks (Q2W). Dose escalation will be carried out according to a modified continual reassessment method (mCRM) with escalation with overdose control (EWOC) design.
Expansion Part B1: Metastatic Melanoma Cohort	Lomvastomig	This cohort will comprise participants with checkpoint inhibitor (CPI) experienced, second line and beyond metastatic melanoma. The starting dose of lomvastomig for Expansion will be derived from the maximum tolerated dose (MTD)/recommended dose for expansion (RDE) and the best dosing schedule determined during Dose Escalation.
Expansion Part B2: NSCLC Cohort 1	Lomvastomig	This cohort will comprise participants with CPI and platinum experienced, second or third line PD-L1 positive non-small cell lung cancer (NSCLC). The starting dose of lomvastomig for Expansion will be derived from the MTD/RDE and the best dosing schedule determined during Dose Escalation.
Expansion Part B3: NSCLC Cohort 2	Lomvastomig	This cohort will comprise participants with PD-L1 high, cancer immunotherapy (CIT) naïve first line NSCLC. The starting dose of lomvastomig for Expansion will be derived from the MTD/RDE and the best dosing schedule determined during Dose Escalation. This cohort was not initiated and no participants were enrolled in it.
Expansion Part B4: SCLC Cohort	Lomvastomig	This cohort will comprise participants with CPI naïve small cell lung cancer (SCLC) with prior failure of, progression on, or intolerance to, standard therapy. The starting dose of lomvastomig for Expansion will be derived from the MTD/RDE and the best dosing schedule determined during Dose Escalation.
Expansion Part B5: ESCC Cohort	Lomvastomig	This cohort will comprise participants with CPI-naïve esophageal squamous cell carcinoma (ESCC). The starting dose of lomvastomig for Expansion will be derived from the MTD/RDE and the best dosing schedule determined during Dose Escalation.
Expansion Part B3: NSCLC Cohort 2	Lomvastomig	This cohort will comprise participants with PD-L1 high, cancer immunotherapy (CIT) naïve first line NSCLC. The starting dose of lomvastomig for Expansion will be derived from the MTD/RDE and the best dosing schedule determined during Dose Escalation.
Expansion Part B5: ESCC Cohort	Lomvastomig	This cohort will comprise participants with CPI-naïve esophageal squamous cell carcinoma (ESCC). The starting dose of lomvastomig for Expansion will be derived from the MTD/RDE and the best dosing schedule determined during Dose Escalation.
Expansion Part B4: SCLC Cohort	Lomvastomig	This cohort will comprise participants with CPI naïve small cell lung cancer (SCLC) with prior failure of, progression on, or intolerance to, standard therapy. The starting dose of lomvastomig for Expansion will be derived from the MTD/RDE and the best dosing schedule determined during Dose Escalation.
Dose Escalation Part A: Once Every 2 Weeks (Q2W)	Lomvastomig	Lomvastomig will be administered in treatment cycles once every 2 weeks (Q2W). Dose escalation will be carried out according to a modified continual reassessment method (mCRM) with escalation with overdose control (EWOC) design.
Expansion Part B1: Metastatic Melanoma Cohort	Lomvastomig	This cohort will comprise participants with checkpoint inhibitor (CPI) experienced, second line and beyond metastatic melanoma. The starting dose of lomvastomig for Expansion will be derived from the maximum tolerated dose (MTD)/recommended dose for expansion (RDE) and the best dosing schedule determined during Dose Escalation.
Expansion Part B2: NSCLC Cohort 1	Lomvastomig	This cohort will comprise participants with CPI and platinum experienced, second or third line PD-L1 positive non-small cell lung cancer (NSCLC). The starting dose of lomvastomig for Expansion will be derived from the MTD/RDE and the best dosing schedule determined during Dose Escalation.

Primary Outcome Measures

Name	Time	Method
Part A: Number of Participants With a Dose-Limiting Toxicity (DLT)	From Cycle 1 Day 1 to Cycle 2 Day 7 (Cycle length= 14 days)	A DLT was defined as a clinically significant adverse event (AE) or significant laboratory abnormality: 1) occurring during DLT assessment period of 21 days; 2) considered to be related to study treatment RO7121661 by the Investigator; 3) is not attributed to disease progression or another clearly identifiable cause. Following AEs were considered DLTs: Hematological toxicities (Grade 4 neutropenia lasting \>5 days, Grade ≥3 febrile neutropenia, Grade 4 thrombocytopenia lasting \> 48 hours, Grade 3 thrombocytopenia associated with bleeding episodes, Grade 4 anemia, Grade ≥3 anemia with hemolysis); Non-hematological toxicity Grade ≥3 (Any Grade 3 immune-mediated AE, Grade 3 hyperbilirubinemia lasting for \>48 hours/Grade 4 hyperbilirubinemia; Grade ≥3 aspartate aminotransferase (AST) or alanine aminotransferase (ALT) elevations with hyperbilirubinemia of Grade ≥2, Grade 4 AST or ALT elevations, Grade ≥3 nausea, vomiting, or diarrhea, Grade ≥3 non-hematological laboratory abnormality.
Part A: Number of Participants With at Least One AE by Highest Severity, Graded According to the National Cancer Institute Common Terminology Criteria for Adverse Events, Version 5.0 (NCI CTCAE v5.0)	From signing of informed consent form up to 60 days after last treatment administration (up to 41.7 months)	AE=any untoward medical occurrence in a participant administered a pharmaceutical product \& which does not necessarily have a causal relationship with treatment \& can therefore be any unfavorable \& unintended sign (including abnormal laboratory values/abnormal clinical test results), symptoms/disease temporally associated with the use of pharmaceutical product, whether or not considered related to pharmaceutical product. Severity of AEs was graded as: 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; limiting self-care activities of daily living; Grade 4= Life-threatening consequences, urgent intervention indicated; Grade 5=Death related to AE.
Part B: Objective Response Rate (ORR) as Determined by Investigator Using Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1)	Cycle 1 Day 1 then every 8 weeks for the first year; every 12 weeks thereafter until disease progression or treatment discontinuation (whichever occurs last), initiation of a new line of therapy or death (Up to 43.3 months) (Cycle length= 14 days)	ORR was defined as the percentage of participants with an objective tumor response of complete response (CR) or partial response (PR) as determined by the investigator using RECIST v.1.1. 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.
Part B: Disease Control Rate (DCR) as Determined by Investigator Using RECIST v1.1	Cycle 1 Day 1 then every 8 weeks for the first year; every 12 weeks thereafter until disease progression or treatment discontinuation (whichever occurs last), initiation of a new line of therapy or death (Up to 43.3 months) (Cycle length= 14 days)	DCR was defined as the percentage of participants with an objective tumor response of CR, PR or stable disease (SD) as determined by the investigator using RECIST v.1.1. 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 mm. PR was defined as at least a 30% decrease in the SOD of target lesions, taking as reference the baseline SOD. SD was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for disease progression (PD). PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest sum on the study including baseline (nadir). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm.
Part B: Duration of Response (DOR) as Determined by Investigator Using RECIST v1.1	From first occurrence of documented OR up to disease progression or death (Up to 43.3 months) (Cycle length = 14 days)	DOR was calculated for participants who had a best confirmed overall response (OR) of CR/PR. DOR was defined as time from first occurrence of a documented OR until the time of documented PD or death (within 30 days from last treatment) from any cause, whichever occurs first as determined by investigator assessment using RECIST v1.1. CR was defined as the disappearance of all target lesions or any pathological lymph nodes (whether target or non-target) having a reduction in short axis to \<10 mm. PR was defined as at least a 30% decrease in the SOD of target lesions, taking as reference the baseline SOD. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest sum on the study including baseline (nadir). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Data for participants without PD or death as of the data cut-off date were censored at the time of the last tumor assessment.
Part B: Progression Free Survival (PFS) as Determined by Investigator Using RECIST v1.1	From treatment initiation (Cycle 1 Day 1) until disease progression or death (Up to 43.3 months) (Cycle length= 14 days)	PFS was defined as the time from study treatment initiation (Cycle 1 Day 1) to the first occurrence of documented PD, as determined by the investigator according to RECIST v1.1 or death from any cause, whichever occurs first. PD was defined as at least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum in the study, including baseline, in addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Data for participants without PD or death as of the data cut-off date were censored at the time of the last tumor assessment.

Secondary Outcome Measures

Name	Time	Method
Parts A and B: Number of Participants With Treatment Emergent Anti-Drug Antibodies (ADAs)	Baseline and Day 1 of Cycles 1 to 5; Day 1 of Cycle 7, and every 6 cycles thereafter (1 cycle is 14 days); study completion/discontinuation; safety follow-up visits (up to approximately 40.8 months - Part A and 45.4 months - Part B)	Participants were considered to be ADA positive if they were ADA negative at baseline but developed an ADA response following study drug administration (treatment-induced ADA response), or if they were ADA positive at baseline and the titer of one or more post-baseline samples was greater than the titer of the baseline sample by a scientifically reasonable margin such as at least 4-fold (treatment-enhanced ADA response).
Part B: Biomarkers: T-cell Proliferation/Activation in Peripheral Blood	Days 1, 2, and 8 of Cycles 1 and 5; Day 1 of Cycles 2, 3, and 9 (1 cycle is 14 days); study completion visit (28 days after last dose; up to 43.3 months); safety follow-up (SFU) (90 days after last dose; up to 45.4 months)	Biomarker analyses were performed using peripheral blood samples that were collected from participants in Part B of the study. The blood samples were assessed by flow cytometry for absolute counts of CD3⁺CD8⁺ T cells and proliferating CD3⁺CD8⁺Ki67⁺ T cells.
Part B: Biomarkers: CD8+ T-cell Densities in Tumor Biopsies	At screening and Cycle 3 Day 1	Fresh tumor biopsies were collected from participants in Part B of the study to assess changes in T-cell infiltration and activation within the tumor microenvironment. Tumor tissue was evaluated for CD8⁺ T-cell densities. The tumor tissue samples were collected at screening (archival metastasis and archival primary samples) and during the study (fresh samples).
Parts A and B: Time to Maximum Observed Serum Concentration (Tmax) of Lomvastomig	Predose, half infusion, end of infusion (EOI), 0.5, 2, 4, and 8 hours postdose on Cycle 1 Day 1 and Cycle 5 Day 1, and on Cycles 1 and 5 Days 2, 3, 4, 5, 8, and 12, and predose on Day 1 of Cycles 2 and 6 (1 cycle = 14 days)
Parts A and B: Maximum Observed Serum Concentration (Cmax) of Lomvastomig	Predose, half infusion, end of infusion (EOI), 0.5, 2, 4, and 8 hours postdose on Cycle 1 Day 1 and Cycle 5 Day 1, and on Cycles 1 and 5 Days 2, 3, 4, 5, 8, and 12, and predose on Day 1 of Cycles 2 and 6 (1 cycle = 14 days)
Parts A and B: Maximum Observed Serum Concentration Dose Normalized (Cmax_D) of Lomvastomig	Predose, half infusion, end of infusion (EOI), 0.5, 2, 4, and 8 hours postdose on Cycle 1 Day 1 and Cycle 5 Day 1, and on Cycles 1 and 5 Days 2, 3, 4, 5, 8, and 12, and predose on Day 1 of Cycles 2 and 6 (1 cycle = 14 days)
Parts A and B: Time to Last Non-zero Concentration (Tlast) of Lomvastomig	Predose, half infusion, end of infusion (EOI), 0.5, 2, 4, and 8 hours postdose on Cycle 1 Day 1 and Cycle 5 Day 1, and on Cycles 1 and 5 Days 2, 3, 4, 5, 8, and 12, and predose on Day 1 of Cycles 2 and 6 (1 cycle = 14 days)	For participants who experienced an adverse event (AE) following infusion with lomvastomig, a delay of the next administration for up to two cycles was acceptable to allow for resolution of toxicity to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Grade 2 or lower for hematological toxicities or Grade 1 or lower for non-hematological toxicities (with the exception of a toxicity considered as not related to study drug). In the case of a delayed administration, the predose PK sample for Day 1 of Cycles 2 and/or 6 could have been collected up to 28 days after the end of the previous treatment cycle.
Parts A and B: Last Non-zero Concentration (Clast) of Lomvastomig	Predose, half infusion, end of infusion (EOI), 0.5, 2, 4, and 8 hours postdose on Cycle 1 Day 1 and Cycle 5 Day 1, and on Cycles 1 and 5 Days 2, 3, 4, 5, 8, and 12, and predose on Day 1 of Cycles 2 and 6 (1 cycle = 14 days)	For participants who experienced an adverse event (AE) following infusion with lomvastomig, a delay of the next administration for up to two cycles was acceptable to allow for resolution of toxicity to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Grade 2 or lower for hematological toxicities or Grade 1 or lower for non-hematological toxicities (with the exception of a toxicity considered as not related to study drug). In the case of a delayed administration, the predose PK sample for Day 1 of Cycles 2 and/or 6 could have been collected up to 28 days after the end of the previous treatment cycle.
Parts A and B: Area Under the Curve From Dosing to Last Concentration (AUClast) of Lomvastomig	Predose, half infusion, end of infusion (EOI), 0.5, 2, 4, and 8 hours postdose on Cycle 1 Day 1 and Cycle 5 Day 1, and on Cycles 1 and 5 Days 2, 3, 4, 5, 8, and 12, and predose on Day 1 of Cycles 2 and 6 (1 cycle = 14 days)	For participants who experienced an adverse event (AE) following infusion with lomvastomig, a delay of the next administration for up to two cycles was acceptable to allow for resolution of toxicity to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Grade 2 or lower for hematological toxicities or Grade 1 or lower for non-hematological toxicities (with the exception of a toxicity considered as not related to study drug). In the case of a delayed administration, the predose PK sample for Day 1 of Cycles 2 and/or 6 could have been collected up to 28 days after the end of the previous treatment cycle.
Parts A and B: Area Under the Curve From Dosing to 336 Hours Post-dose (AUC0-336 Hrs) of Lomvastomig	Predose, half infusion, end of infusion (EOI), 0.5, 2, 4, and 8 hours postdose on Cycle 1 Day 1 and Cycle 5 Day 1, and on Cycles 1 and 5 Days 2, 3, 4, 5, 8, and 12, and predose on Day 1 of Cycles 2 and 6 (1 cycle = 14 days)
Part A: Receptor Occupancy (RO) of Lomvastomig, Assessed Via an Ex-Vivo Assay	Predose and EOI: Day 1 of Cycles 1 and 5; Predose: Day 1 of Cycles 2, 3, and 9; Postdose: Day 8 of Cycles 1 and 5 (1 cycle is 14 days); study completion (28 days after last dose; up to 39.7 months); SFU (60 days after last dose; up to 40.8 months)	Blood samples were collected from participants in Part A of the study and different types of immune cells were assessed by flow cytometry for the percentage of receptor occupancy (RO) by lomvastomig. RO (or drug coverage) is used to quantify the binding of the therapeutic to its target on the cell surface. The RO of lomvastomig was determined on cells that were positive (+) for CD3+, CD4+, CD56+/16+, and CD8+.
Part B: Number of Participants With at Least One AE by Highest Severity, Graded According to the NCI CTCAE v5.0	From signing of informed consent form up to 90 days after last treatment administration (up to 46.2 months)	AE=any untoward medical occurrence in a participant administered a pharmaceutical product \& which does not necessarily have a causal relationship with treatment \& can therefore be any unfavorable \& unintended sign (including abnormal laboratory values/abnormal clinical test results), symptoms/disease temporally associated with the use of pharmaceutical product, whether or not considered related to pharmaceutical product. Severity of AEs was graded as: 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; limiting self-care activities of daily living; Grade 4= Life-threatening consequences, urgent intervention indicated; Grade 5=Death related to AE.
Part A: ORR as Determined by Investigator Using RECIST v1.1	Cycle 1 Day 1 then every 8 weeks for the first year; every 12 weeks thereafter until disease progression or treatment discontinuation (whichever occurs last), initiation of a new line of therapy or death (Up to 39.7 months) (Cycle length= 14 days)	ORR was defined as the percentage of participants with an objective tumor response of CR or PR as determined by the investigator using RECIST v.1.1. 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 mm. PR was defined as at least a 30% decrease in the SOD of target lesions, taking as reference the baseline SOD.
Part A: DCR as Determined by Investigator Using RECIST v1.1	Cycle 1 Day 1 then every 8 weeks for the first year; every 12 weeks thereafter until disease progression or treatment discontinuation (whichever occurs last), initiation of a new line of therapy or death (Up to 39.7 months) (Cycle length= 14 days)	DCR was defined as the percentage of participants with an objective tumor response of CR, PR or SD as determined by the investigator using RECIST v.1.1. 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 mm. PR was defined as at least a 30% decrease in the SOD of target lesions, taking as reference the baseline SOD. SD was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest sum on the study including baseline (nadir). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm.
Part A: DOR as Determined by Investigator Using RECIST v1.1	From first occurrence of documented OR up to disease progression or death (Up to 39.7 months) (Cycle length= 14 days)	DOR was calculated for participants who had a best confirmed OR of CR/PR. DOR was defined as time from first occurrence of a documented OR until the time of documented PD or death from any cause, whichever occurs first as determined by investigator assessment using RECIST v1.1. CR=the disappearance of all target lesions or any pathological lymph nodes (whether target or non-target) having a reduction in short axis to \<10 mm. PR=at least a 30% decrease in the SOD of target lesions, taking as reference the baseline SOD. PD=at least a 20% increase in the SOD of target lesions, taking as reference the smallest sum on the study including baseline (nadir). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Data for participants without PD or death from any cause as of the data cut-off date were censored at the time of the last tumor assessment.
Part A: PFS as Determined by Investigator Using RECIST v1.1	From initiation of study treatment (Cycle 1 Day 1) until disease progression or death (Up to 39.7 months) (Cycle length= 14 days)	PFS was defined as the time from study treatment initiation (Cycle 1 Day 1) to the first occurrence of documented PD, as determined by the investigator according to RECIST v1.1 or death from any cause, whichever occurs first. PD was defined as at least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum in the study, including baseline, in addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Data for participants without PD or death as of the data cut-off date were censored at the time of the last tumor assessment.

Trial Locations

Locations (17): Columbia Univ Med Ctr
🇺🇸
New York, New York, United States
MD Anderson Cancer Center
🇺🇸
Houston, Texas, United States
Herlev Hospital
🇩🇰
Herlev, Denmark
Rigshospitalet
🇩🇰
København Ø, Denmark
Institut Bergonie
🇫🇷
Bordeaux, France
Centre Leon Berard
🇫🇷
Lyon, France
CHU Timone
🇫🇷
Marseille, France
ICO Rene Gauducheau
🇫🇷
St Herblain, France
Seoul National University Hospital
🇰🇷
Seoul, Korea, Republic of
Severance Hospital, Yonsei University Health System
🇰🇷
Seoul, Korea, Republic of
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Columbia Univ Med Ctr
🇺🇸New York, New York, United States