- Part A;Number of Participants With Dose-Limiting Toxicities (DLT): [ Time Frame: Through Cycle 1 (a cycle is 21 days] ]
DLT was defined as any of the following AEs occurring in the first cycle of treatment which were attributable to the study drug: •Grade 5 events not clearly related to disease progression or any other causes, grade 3 or higher non-hematologic toxicity regardless of duration, and Hy's law cases will be considered DLTs.
.•Grade 3 AST, ALT, or bilirubinemia that lasts >5 days •Grade 4 neutropenia or thrombocytopenia lasting >7 days
- Febrile neutropenia
- Grade 3 or higher thrombocytopenia with bleeding
- Grade 4 immune-related AEs regardless of duration
- Grade 3 or grade 4 non-infectious pneumonitis regardless of duration
- Grade 3 immune-related AEs, excluding colitis, hepatitis, and pneumonitis, that do not downgrade to grade ≤2 within 3 days after onset of the event despite maximal supportive care including systemic corticosteroids or downgrade to grade 1 or baseline within 14 days
- Grade 2 pneumonitis that does not resolve to grade 1 within 3 days of care
- Grade 3 colitis
- Part A;Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs) [ Time Frame: Cycle 1, Day 1 (each cycle is 21 days) through study completion an average of 1 year ]
An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the following outcomes or deemed significant and jeopardized the participants or required treatment to prevent other AE outcomes for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent AEs are events which occurred between first dose of study drug and up to 90 days after last dose that were absent before treatment or that worsened relative to pre-treatment state.
- Part A;Number of Participants With Treatment Related Adverse Events (AEs) and Serious Adverse Events (SAEs [ Time Frame: assessed in average of 7 months ]
An AE was any untoward medical occurrence in a participant who received study drug. An SAE was an AE resulting in any of the following outcomes or deemed significant and jeopardized the participants or required treatment to prevent other AE outcomes for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent AEs are events which occurred between first dose of study drug and up to 90 days after last dose that were absent before treatment or that worsened relative to pre-treatment state
- Part A;Number of Participants With Adverse Events (AEs) According to Severity of Grade 3 or Higher Severity Based on NCI CTCAE Version 5.0 [ Time Frame: assessed in average of 7 months ]
An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the following outcomes or deemed significant and jeopardized the participants or required treatment to prevent other AE outcomes for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. AEs were graded according to the Common Terminology Criteria for Adverse Events (NCI CTCAE) version 5.0 and coded using the Medical Dictionary for Regulatory Activities (MedDRA) as Grade 3: Severe, Grade 4: Life threatening, Grade 5: Death related to AE. Participants were counted once according to the maximum grade observed
- Part A;Number of Participants With Laboratory Test Abnormalities of Grade 3 or Higher Severity Based on NCI CTCAE Version 5.0: Biochemistry and Hematology [ Time Frame: Cycle 1 Day 1 (each cycle is 21 days) through study completion, an average of 1 year ]
Laboratory parameters included hematological and biochemistry includes Na, Cl, ALT, AST, bilirubin (direct, total), alkaline phosphatase, lactate dehydrogenase, creatinine, glucose (preferably fasting) for hyper- or hypoglycemia, urea or blood urea nitrogen, cholesterol, triglyceride, CRP, uric acid, amylase, and lipase, hypercalcemia, hyperkalemia, hypermagnesemia, hypernatremia, hypoalbuminemia, hypocalcemia, hypokalemia, hypomagnesemia, hyponatremia, hypophosphatemia. Hematology parameters included anemia, hemoglobin increased, lymphocyte count increased, lymphopenia, neutrophils (absolute), platelets and white blood cells Hematology panel will include hemoglobin, glycated hemoglobin HbA1c at study entry, hematocrit, red blood cell count (for anemia), reticulocytes, WBC count (with full differentiation for leukopenia, neutropenia and etc)), ALC (lymphopenia), and platelet count assessment of for thrombocytopenia.
- Part A;Number of Participants With Laboratory Test Abnormalities: Urinalysis [ Time Frame: Cycle 1 Day 1, (each cycle is 21 days) through study completion, an average of 1 year ]
Urinalysis parameter includes: pH, glucose, protein, bilirubin, urobilinogen. Microscopic examination: red blood cell count, WBC, epithelial cells, bacteria.
In case of proteinuria ≥100 mg/dL at screening, a 24-hour urine analysis will have to be performed (prior to the start of SO-C101 treatment) to document 24-hour proteinuria levels and a urine test will continue during the treatment period. In case of increase of proteinuria with ≥300 mg/dL (at any time), a 24-hour urine analysis will be performed.
Test abnormalities was defined as deviation from normal range: Urine blood/hemoglobin abnormality was defined as presence and absence of blood/hemoglobin in urine of participants
- Part A;Number of Participants With Clinically Significant Change From Screening in Vital Signs [ Time Frame: Screening, through study completion, an average of 1 year ]
Vital signs included blood pressure, pulse rate, respiratory rate and weight. Change from screening values which are considered to be clinically significant based on investigator's judgement
- Part A; Number of Participants With Eastern Cooperative Oncology Group [ECOG] Performance Status Score [ Time Frame: Screening, through study completion, an average of 1 year ]
ECOG performance status was used to assess how disease affect the daily living abilities of a participant. It was measured on a scale ranging from 0 to 4, where 0=fully active (able to carry on all pre-disease activities without restriction); 1=restricted in physically strenuous activity but ambulatory (able to carry out light/sedentary work); 2=ambulatory and capable of all self-care but unable to carry out any work activities (for more than 50% of waking hours); 3=capable of limited self-care, confined to bed or chair (for >50% of waking hours); 4=completely disabled, not capable of any self-care, totally confined to bed or chair. Higher scores signified =more functional impairment of a participant.
- Part B: Number of Participants With Dose-Limiting Toxicities (DLT): Dose Finding Phase [ Time Frame: Cycle 1 Day 1 to Cycle 2 Day 1 21 days ]
DLT was defined as any of the following AEs occurring in the first cycle of treatment which were attributable to the study drug: •Grade 5 events not clearly related to disease progression or any other causes, grade 3 or higher non-hematologic toxicity regardless of duration, and Hy's law cases will be considered DLTs.
.•Grade 3 AST, ALT, or bilirubinemia that lasts >5 days •Grade 4 neutropenia or thrombocytopenia lasting >7 days
- Febrile neutropenia
- Grade 3 or higher thrombocytopenia with bleeding
- Grade 4 immune-related AEs regardless of duration
- Grade 3 or grade 4 non-infectious pneumonitis regardless of duration
- Grade 3 immune-related AEs, excluding colitis, hepatitis, and pneumonitis, that do not downgrade to grade ≤2 within 3 days after onset of the event despite maximal supportive care including systemic corticosteroids or downgrade to grade 1 or baseline within 14 days
- Grade 2 pneumonitis that does not resolve to grade 1 within 3 days of care
- Grade 3 colitis
- Part B: Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events [ Time Frame: Cycle 1 Day 1, up to 90 days after last dose of study drug (assessed in average of 7 months ]
An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the following outcomes or deemed significant and jeopardized the participants or required treatment to prevent other AE outcomes for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent AEs are events which occurred between first dose of study drug and up to 90 days after last dose that were absent before treatment or that worsened relative to pre-treatment state
- Part B: Number of Participants With Treatment Related Adverse Events (AEs) and Serious Adverse Events [ Time Frame: Cycle 1 Day 1, up to 90 days after last dose of study drug (assessed in average of 7 months ]
An AE was any untoward medical occurrence in a participant who received study drug. An SAE was an AE resulting in any of the following outcomes or deemed significant and jeopardized the participants or required treatment to prevent other AE outcomes for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent AEs are events which occurred between first dose of study drug and up to 90 days after last dose that were absent before treatment or that worsened relative to pre-treatment state
- Part B: Number of Participants With Adverse Events (AEs) According to Severity of Grade 3 or Higher Severity Based on NCI CTCAE Version 5.0 [ Time Frame: Cycle 1 Day 1, (each cycle is 21 days) through study completion, an average of 1 year ]
An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the following outcomes or deemed significant and jeopardized the participants or required treatment to prevent other AE outcomes for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. AEs were graded according to the Common Terminology Criteria for Adverse Events (NCI CTCAE) version 5.0 and coded using the Medical Dictionary for Regulatory Activities (MedDRA) as Grade 3: Severe, Grade 4: Life threatening, Grade 5: Death related to AE. Participants were counted once according to the maximum grade observed.
- Part B: Number of Participants With Laboratory Test Abnormalities of Grade 3 or Higher Severity Based on NCI CTCAE Version 5.0: Biochemistry and Hematology [ Time Frame: Cycle 1 Day 1, (each cycle is 21 days) through study completion, an average of 1 year ]
Laboratory parameters included hematological and biochemistry parameters. Biochemistry parameters includes Na, Cl, ALT, AST, bilirubin (direct, total), alkaline phosphatase, lactate dehydrogenase, creatinine, glucose (preferably fasting) for hyper- or hypoglycemia, urea or blood urea nitrogen, cholesterol, triglyceride, CRP, uric acid, amylase, and lipase, hypercalcemia, hyperkalemia, hypermagnesemia, hypernatremia, hypoalbuminemia, hypocalcemia, hypokalemia, hypomagnesemia, hyponatremia, hypophosphatemia. Hematology parameters included anemia, hemoglobin increased, lymphocyte count increased, lymphopenia, neutrophils (absolute), platelets and white blood cells Hematology panel includes hemoglobin, glycated hemoglobin HbA1c at study entry, hematocrit, red blood cell count (for anemia), reticulocytes, WBC count (with full differentiation for leukopenia, neutropenia and etc)), ALC (lymphopenia), and platelet count assessment of for thrombocytopenia.
- Part B: Number of Participants With Laboratory Test Abnormalities: Urinalysis [ Time Frame: Screening, through study completion, an average of 1 year ]
Urinalysis parameter includes: pH, glucose, protein, bilirubin, urobilinogen. Microscopic examination: red blood cell count, WBC, epithelial cells, bacteria.
In case of proteinuria ≥100 mg/dL at screening, a 24-hour urine analysis will have to be performed (prior to the start of SO-C101 treatment) to document 24-hour proteinuria levels and a urine test will continue during the treatment period. In case of increase of proteinuria with ≥300 mg/dL (at any time), a 24-hour urine analysis will be performed.
Test abnormalities was defined as deviation from normal range: Urine blood/hemoglobin abnormality was defined as presence and absence of blood/hemoglobin in urine of participants
- Part B: Number of Participants With Clinically Significant Change From Screening in Vital Signs [ Time Frame: Screening, through study completion, an average of 1 year ]
Vital signs included blood pressure, pulse rate, respiratory rate and weight. Change from screening values which are considered to be clinically significant based on investigator's judgement.
- Part B: Number of Participants With Eastern Cooperative Oncology Group [ECOG] [ Time Frame: Screening, through study completion, an average of 1 year ]
ECOG performance status was used to assess how disease affect the daily living abilities of a participant. It was measured on a scale ranging from 0 to 4, where 0=fully active (able to carry on all pre-disease activities without restriction); 1=restricted in physically strenuous activity but ambulatory (able to carry out light/sedentary work); 2=ambulatory and capable of all self-care but unable to carry out any work activities (for more than 50% of waking hours); 3=capable of limited self-care, confined to bed or chair (for >50% of waking hours); 4=completely disabled, not capable of any self-care, totally confined to bed or chair. Higher scores signified =more functional impairment of a participant.
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