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Phase 1 Study to Evaluate the Safety, Pharmacokinetics and Pharmacodynamics of H3B-6527 in Participants With Advanced Hepatocellular Carcinoma

An Open-Label Multicenter Phase 1 Study to Evaluate the Safety, Pharmacokinetics and Pharmacodynamics of H3B-6527 in Subjects With Advanced Hepatocellular Carcinoma

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02834780
Enrollment
128
Registered
2016-07-15
Start date
2016-12-28
Completion date
2022-02-23
Last updated
2023-11-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Advanced Hepatocellular Carcinoma, Hepatic Cancer, Hepatic Carcinoma, Hepatocellular Carcinoma, Liver Cancer, Liver Neoplasms

Keywords

Advanced Hepatocellular Carcinoma, H3B-6527, Fibroblast growth factor receptor 4 (FGFR4), Fibroblast growth factor 19 (FGF19)

Brief summary

The purpose of this study is to determine the maximum tolerated dose (MTD) and recommended Phase 2 dose (RP2D) of H3B-6527, and to assess the safety, tolerability and pharmacokinetics of H3B-6527.

Interventions

H3B-6527 by mouth once or twice daily at specified doses.

Sponsors

Eisai Inc.
CollaboratorINDUSTRY
H3 Biomedicine Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Participants with hepatocellular carcinoma. 2. Must have had at least one prior standard-of-care therapy, unless contraindicated. 3. Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1. 4. Must be willing to undergo a biopsy up to 8 weeks before administration of H3B-6527 on Cycle 1 Day 1 for part 2 (dose expansion). 5. Adequate bone marrow and organ function.

Exclusion criteria

1. Uncontrolled significant active infections, except hepatitis B virus (HBV) or hepatitis C virus (HCV). 2. Known human immunodeficiency virus infection. 3. Presence of gastric or esophageal varices requiring active treatment. 4. Previous treatment with a selective FGF19-FGFR4 targeted therapy. 5. Females of childbearing potential, or males who have not had a successful vasectomy, who are unable or unwilling to follow adequate contraceptive measures. 6. Hereditary problems of galactose intolerance, the Lapp lactase deficiency, or glucose-galactose malabsorption.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) ParametersFrom baseline up to approximately 36.7 months
Number of Participants With Clinically Significant Change From Baseline in Vital Sign ParametersFrom baseline up to approximately 36.7 months
Part 1, Dose Escalation Phase: Number of Participants With Dose-limiting Toxicities (DLTs) Based on National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.03Cycle 1 (Cycle length = 21 days)DLTs were defined as any of the following toxicities: Hematology, gastrointestinal, renal, hepatic or nonhematologic toxicities occurring during Cycle 1 in Dose Escalation Phase only and judged by the investigator as related to study drug. This included any Grade 4: neutropenia that does not resolve to Grade less than or equal to (\<=) 2 within 7 days, thrombocytopenia, anemia of any duration, diarrhea and/or vomiting irrespective of prophylaxis or appropriate treatment; Grade 3: thrombocytopenia requiring transfusion, thrombocytopenia and clinically significant bleeding, anemia if transfused or if lasting for more than 7 days, nausea, vomiting and/or diarrhea lasting more than 72 hours despite the use of optimal anti-emetic/antidiarrheal treatment, bilirubin, fatigue lasting less than 1 week, elevations in biochemistry laboratory values without associated clinical symptoms that last for \<=7 days; Grade greater than or equal to (\>=) 3 serum creatinine.
Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)From the first dose of study drug up to approximately 36.7 monthsA TEAE was defined as an adverse event (AE) that emerges during treatment, having been absent at pretreatment (Baseline) or reemerges during treatment, having been present at pretreatment (Baseline) but stopped before treatment, or worsens in severity during treatment relative to the pretreatment state, when the AE was continuous. An SAE was any untoward medical occurrence that at any dose: Resulted in death, was life-threatening (that is, the participant was at immediate risk of death from the AE as it occurred; this does not include an event that, had it occurred in a more severe form or was allowed to continue, might have caused death), required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect (in the child of a participant who was exposed to the study drug).
Number of Participants With Clinically Significant Change From Baseline in Laboratory ParametersFrom baseline up to approximately 36.7 monthsLaboratory assessment included hematology, coagulation, clinical chemistry, and urinalysis parameters.

Secondary

MeasureTime frameDescription
Part 2, Dose Expansion Phase: Progression-free Survival (PFS) Based on Modified Response Evaluation Criteria in Solid Tumors (mRECIST) v1.1From the first dose date to the date of the first documentation of PD as determined by the investigator or death (whichever occurs first) up to approximately 36.7 monthsPFS was defined as the time from the first dose date to the date of the first documentation of PD as determined by the investigator or death (whichever occurs first). PD was defined as at least a 20% increase in the sum of LD of target and non-target lesions as compared with the smallest sum of LD and the increase of LD was at least 5 mm (including new lesions).
Area Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Part 1, Cycle 1 Day 1 and Day 8: 0-24 hours post-dose (for QD dosing) and 0-10 hours post-dose (for BID dosing); Part 2, Cycle 1 Day 8: 0-24 hours post-dose (for QD dosing) and 0-10 hours post-dose (for BID dosing) (Cycle 1 length = 21 days)
Part 2, Dose Expansion Phase: Time to Response (TTR) Based on Modified Response Evaluation Criteria in Solid Tumors (mRECIST) v1.1From date of first dose of study drug until CR or PR (up to approximately 36.7 months)TTR was defined as the time from the first dose date to the date of first documented CR/PR. CR was defined as the disappearance of all target lesions and non-target lesions. Any pathological lymph nodes (target or non-target) had to be reduced in the short axis to less than 10 mm. PR was defined as at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters.
Part 2, Dose Expansion Phase: Overall Survival (OS)From the date of first dose of study drug until date of death from any cause (up to approximately 36.7 months)OS was defined as the time from the first dose date to the date of death. OS was assessed using Kaplan-Meier method. The time of death was censored for participants who were without death information at the time of OS analysis.
Maximum Observed Plasma Concentration (Cmax) of H3B-6527Part 1, Cycle 1 Day 1 and Day 8: 0-24 hours post-dose (for QD dosing) and 0-10 hours post-dose (for BID dosing); Part 2, Cycle 1 Day 8: 0-24 hours post-dose (for QD dosing) and 0-10 hours post-dose (for BID dosing) (Cycle 1 length = 21 days)
Time of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Part 1, Cycle 1 Day 1 and Day 8: 0-24 hours post-dose (for QD dosing) and 0-10 hours post-dose (for BID dosing); Part 2, Cycle 1 Day 8: 0-24 hours post-dose (for QD dosing) and 0-10 hours post-dose (for BID dosing) (Cycle 1 length = 21 days)
Part 2, Dose Expansion Phase: Objective Response Rate (ORR) Based on Modified Response Evaluation Criteria in Solid Tumors (mRECIST) v1.1From the first dose date until disease progression/recurrence or up to approximately 36.7 monthsORR was defined as the percentage of participants achieving a best overall confirmed response of partial response (PR) or complete response (CR) (PR + CR), from the first dose date until disease progression/recurrence. Responses (PR or CR) were confirmed no less than 4 weeks after the initial response. CR was defined as the disappearance of all target lesions and non-target lesions. Any pathological lymph nodes (target or non-target) had to be reduced in the short axis to less than 10 millimeter (mm). PR was defined as at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters. The tumor assessment was done using number of lesions based on modified RECIST v1.1 for assessing tumor burden up to 10 target lesions with up to 5 target lesions per organ.
Part 2, Dose Expansion Phase: Duration of Response (DOR) Based on Modified Response Evaluation Criteria in Solid Tumors (mRECIST) v1.1From the date of first documented CR or PR up to approximately 36.7 monthsDOR was defined as the time from the date of first documented CR or PR based on modified RECIST v1.1 until the first documentation of disease progression (PD) as determined by the investigator or death, whichever comes first. CR was defined as the disappearance of all target lesions and non-target lesions. PR was defined as at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters. PD was defined as at least a 20% increase in the sum of long diameter (LD) of target and non-target lesions as compared with the smallest sum of LD and the increase of LD was at least 5 mm (including new lesions).

Countries

Belgium, Canada, France, Italy, Russia, Singapore, South Korea, Spain, Taiwan, United Kingdom, United States

Participant flow

Recruitment details

Participants took part in the study at 54 investigative sites in Belgium, Canada, France, Italy, Republic of Korea, Russian Federation, Singapore, Spain, Taiwan and the United States from 28 December 2016 to 23 February 2022.

Pre-assignment details

A total of 304 participants were screened, of which 176 were screen failures and 128 were enrolled into two parts: Dose Escalation Phase (Part 1) and Dose Expansion Phase (Part 2) to receive study treatment.

Participants by arm

ArmCount
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD Fasted
Participants received H3B-6527 300 mg capsule, orally, QD in 21-days cycle in fasted state during treatment phase in dose escalation phase until disease progression, development of unacceptable toxicity, withdrawal of consent, or termination of the participants from the study by the Sponsor.
3
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD Fasted
Participants received H3B-6527 600 mg capsule, orally, QD in 21-days cycle in fasted state during treatment phase in dose escalation phase until disease progression, development of unacceptable toxicity, withdrawal of consent, or termination of the participants from the study by the Sponsor.
3
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD Fed
Participants received H3B-6527 600 mg capsule, orally, QD in 21-days cycle in fed state during treatment phase in dose escalation phase until disease progression, development of unacceptable toxicity, withdrawal of consent, or termination of the participants from the study by the Sponsor.
4
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD Fasted
Participants received H3B-6527 1000 mg capsule, orally, QD in 21-days cycle in fasted state during treatment phase in dose escalation phase until disease progression, development of unacceptable toxicity, withdrawal of consent, or termination of the participants from the study by the Sponsor.
10
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD Fed
Participants received H3B-6527 1000 mg capsule, orally, QD in 21-days cycle in fed state during treatment phase in dose escalation phase until disease progression, development of unacceptable toxicity, withdrawal of consent, or termination of the participants from the study by the Sponsor.
3
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD Fasted
Participants received H3B-6527 1400 mg capsule, orally, QD in 21-days cycle in fasted state during treatment phase in dose escalation phase until disease progression, development of unacceptable toxicity, withdrawal of consent, or termination of the participants from the study by the Sponsor.
7
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD Fed
Participants received H3B-6527 1400 mg capsule, orally, QD in 21-days cycle in fed state during treatment phase in dose escalation phase until disease progression, development of unacceptable toxicity, withdrawal of consent, or termination of the participants from the study by the Sponsor.
4
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD Fed
Participants received H3B-6527 2000 mg capsule, orally, QD in 21-days cycle in fed state during treatment phase in dose escalation phase until disease progression, development of unacceptable toxicity, withdrawal of consent, or termination of the participants from the study by the Sponsor.
7
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID Fasted
Participants received H3B-6527 500 mg capsule, orally, BID in 21-days cycle in fasted state during treatment phase in dose escalation phase until disease progression, development of unacceptable toxicity, withdrawal of consent, or termination of the participants from the study by the Sponsor.
3
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID Fed
Participants received H3B-6527 500 mg capsule, orally, BID in 21-days cycle in fed state during treatment phase in dose escalation phase until disease progression, development of unacceptable toxicity, withdrawal of consent, or termination of the participants from the study by the Sponsor.
10
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID Fed
Participants received H3B-6527 700 mg capsule, orally, BID in 21-days cycle in fed state during treatment phase in dose escalation phase until disease progression, development of unacceptable toxicity, withdrawal of consent, or termination of the participants from the study by the Sponsor.
5
Part 2, Dose Expansion Phase: H3B-6527 1000 mg QD
Participants received H3B-6527 1000 mg capsule, orally, QD in 21-days cycle either in fasted or fed state during treatment phase in dose expansion phase until disease progression, development of unacceptable toxicity, withdrawal of consent, or termination of the participants from the study by the Sponsor.
29
Part 2, Dose Expansion Phase: H3B-6527 500 mg BID Fed
Participants received H3B-6527 500 mg capsule, orally, BID in 21-days cycle in fed state during treatment phase in dose expansion phase until disease progression, development of unacceptable toxicity, withdrawal of consent, or termination of the participants from the study by the Sponsor.
40
Total128

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005FG006FG007FG008FG009FG010FG011FG012
Overall StudyAdverse Event0000101102032
Overall StudyDisease Progression - Clinically Confirmed1001111202125
Overall StudyDisease Progression -Radiologically Confirmed132716243632432
Overall StudyOther1012000000001
Overall StudyWithdrawal by Subject0010000000100

Baseline characteristics

CharacteristicPart 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedPart 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedPart 1, Dose Escalation Phase: H3B-6527 600 mg QD FedPart 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedPart 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedPart 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedPart 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedPart 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedPart 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedPart 1, Dose Escalation Phase: H3B-6527 500 mg BID FedPart 1, Dose Escalation Phase: H3B-6527 700 mg BID FedPart 2, Dose Expansion Phase: H3B-6527 1000 mg QDPart 2, Dose Expansion Phase: H3B-6527 500 mg BID FedTotal
Age, Continuous59.0 years
STANDARD_DEVIATION 7
72.7 years
STANDARD_DEVIATION 4.73
68.5 years
STANDARD_DEVIATION 9.75
67.1 years
STANDARD_DEVIATION 8.01
68.7 years
STANDARD_DEVIATION 6.51
59.3 years
STANDARD_DEVIATION 12.22
60.3 years
STANDARD_DEVIATION 7.14
62.1 years
STANDARD_DEVIATION 7.52
68.7 years
STANDARD_DEVIATION 4.04
62.0 years
STANDARD_DEVIATION 16.51
65.6 years
STANDARD_DEVIATION 9.91
61.4 years
STANDARD_DEVIATION 10.67
64.3 years
STANDARD_DEVIATION 10.58
63.6 years
STANDARD_DEVIATION 10.5
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants1 Participants2 Participants5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
3 Participants3 Participants4 Participants9 Participants3 Participants7 Participants4 Participants6 Participants3 Participants9 Participants5 Participants27 Participants28 Participants111 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants0 Participants1 Participants10 Participants12 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants0 Participants1 Participants1 Participants1 Participants2 Participants2 Participants0 Participants0 Participants5 Participants2 Participants8 Participants7 Participants30 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants1 Participants0 Participants1 Participants1 Participants1 Participants0 Participants0 Participants0 Participants0 Participants0 Participants1 Participants5 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants1 Participants10 Participants11 Participants
Race (NIH/OMB)
White
2 Participants3 Participants2 Participants9 Participants1 Participants4 Participants1 Participants7 Participants3 Participants4 Participants3 Participants20 Participants22 Participants81 Participants
Sex: Female, Male
Female
0 Participants0 Participants2 Participants2 Participants0 Participants3 Participants2 Participants3 Participants1 Participants3 Participants2 Participants7 Participants12 Participants37 Participants
Sex: Female, Male
Male
3 Participants3 Participants2 Participants8 Participants3 Participants4 Participants2 Participants4 Participants2 Participants7 Participants3 Participants22 Participants28 Participants91 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
EG009
affected / at risk
EG010
affected / at risk
EG011
affected / at risk
EG012
affected / at risk
deaths
Total, all-cause mortality
1 / 33 / 32 / 46 / 102 / 37 / 73 / 41 / 73 / 36 / 104 / 519 / 2931 / 40
other
Total, other adverse events
3 / 33 / 34 / 410 / 103 / 37 / 74 / 47 / 73 / 39 / 105 / 528 / 2939 / 40
serious
Total, serious adverse events
0 / 30 / 31 / 41 / 101 / 34 / 71 / 42 / 72 / 33 / 101 / 511 / 2917 / 40

Outcome results

Primary

Number of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) Parameters

Time frame: From baseline up to approximately 36.7 months

Population: Safety analysis set included all participants who received at least 1 dose of the study drug. This outcome measure was planned to be analyzed for Part 1 and Part 2.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedNumber of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) Parameters0 Participants
Part 2, Dose Expansion Phase: H3B-6527 1000 mg QDNumber of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) Parameters0 Participants
Part 2, Dose Expansion Phase: H3B-6527 500 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Electrocardiogram (ECG) Parameters0 Participants
Primary

Number of Participants With Clinically Significant Change From Baseline in Laboratory Parameters

Laboratory assessment included hematology, coagulation, clinical chemistry, and urinalysis parameters.

Time frame: From baseline up to approximately 36.7 months

Population: Safety analysis set included all participants who received at least 1 dose of the study drug. This outcome measure was planned to be analyzed for Part 1 and Part 2.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersUrinalysis0 Participants
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersClinical Chemistry0 Participants
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersCoagulation0 Participants
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersHematology0 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersClinical Chemistry0 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersUrinalysis0 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersCoagulation0 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersHematology0 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersUrinalysis0 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersCoagulation0 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersClinical Chemistry0 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersHematology0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersUrinalysis0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersCoagulation0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersClinical Chemistry0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersHematology0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersHematology0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersCoagulation0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersClinical Chemistry0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersUrinalysis0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersUrinalysis0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersHematology0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersClinical Chemistry0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersCoagulation0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersCoagulation0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersHematology0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersClinical Chemistry0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersUrinalysis0 Participants
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersClinical Chemistry0 Participants
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersUrinalysis0 Participants
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersCoagulation0 Participants
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersHematology0 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersCoagulation0 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersHematology0 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersUrinalysis0 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersClinical Chemistry0 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersClinical Chemistry0 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersUrinalysis0 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersCoagulation0 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersHematology0 Participants
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersUrinalysis0 Participants
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersHematology0 Participants
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersCoagulation0 Participants
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersClinical Chemistry0 Participants
Part 2, Dose Expansion Phase: H3B-6527 1000 mg QDNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersUrinalysis0 Participants
Part 2, Dose Expansion Phase: H3B-6527 1000 mg QDNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersHematology0 Participants
Part 2, Dose Expansion Phase: H3B-6527 1000 mg QDNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersClinical Chemistry0 Participants
Part 2, Dose Expansion Phase: H3B-6527 1000 mg QDNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersCoagulation0 Participants
Part 2, Dose Expansion Phase: H3B-6527 500 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersClinical Chemistry0 Participants
Part 2, Dose Expansion Phase: H3B-6527 500 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersCoagulation0 Participants
Part 2, Dose Expansion Phase: H3B-6527 500 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersUrinalysis0 Participants
Part 2, Dose Expansion Phase: H3B-6527 500 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Laboratory ParametersHematology0 Participants
Primary

Number of Participants With Clinically Significant Change From Baseline in Vital Sign Parameters

Time frame: From baseline up to approximately 36.7 months

Population: Safety analysis set included all participants who received at least 1 dose of the study drug. This outcome measure was planned to be analyzed for Part 1 and Part 2.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Vital Sign Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Vital Sign Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Vital Sign Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Vital Sign Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Vital Sign Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedNumber of Participants With Clinically Significant Change From Baseline in Vital Sign Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Vital Sign Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedNumber of Participants With Clinically Significant Change From Baseline in Vital Sign Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedNumber of Participants With Clinically Significant Change From Baseline in Vital Sign Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Vital Sign Parameters0 Participants
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Vital Sign Parameters0 Participants
Part 2, Dose Expansion Phase: H3B-6527 1000 mg QDNumber of Participants With Clinically Significant Change From Baseline in Vital Sign Parameters0 Participants
Part 2, Dose Expansion Phase: H3B-6527 500 mg BID FedNumber of Participants With Clinically Significant Change From Baseline in Vital Sign Parameters0 Participants
Primary

Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)

A TEAE was defined as an adverse event (AE) that emerges during treatment, having been absent at pretreatment (Baseline) or reemerges during treatment, having been present at pretreatment (Baseline) but stopped before treatment, or worsens in severity during treatment relative to the pretreatment state, when the AE was continuous. An SAE was any untoward medical occurrence that at any dose: Resulted in death, was life-threatening (that is, the participant was at immediate risk of death from the AE as it occurred; this does not include an event that, had it occurred in a more severe form or was allowed to continue, might have caused death), required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect (in the child of a participant who was exposed to the study drug).

Time frame: From the first dose of study drug up to approximately 36.7 months

Population: Safety analysis set included all participants who received at least 1 dose of the study drug. This outcome measure was planned to be analyzed for Part 1 and Part 2.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with TEAEs3 Participants
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with SAEs0 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with TEAEs3 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with SAEs0 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with TEAEs4 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with SAEs1 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with TEAEs10 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with SAEs1 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with SAEs1 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with TEAEs3 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with SAEs4 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with TEAEs7 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with TEAEs4 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with SAEs1 Participants
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with TEAEs7 Participants
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with SAEs2 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with TEAEs3 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with SAEs2 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with SAEs3 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with TEAEs9 Participants
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with SAEs1 Participants
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with TEAEs5 Participants
Part 2, Dose Expansion Phase: H3B-6527 1000 mg QDNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with TEAEs28 Participants
Part 2, Dose Expansion Phase: H3B-6527 1000 mg QDNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with SAEs11 Participants
Part 2, Dose Expansion Phase: H3B-6527 500 mg BID FedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with SAEs17 Participants
Part 2, Dose Expansion Phase: H3B-6527 500 mg BID FedNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Participants with TEAEs40 Participants
Primary

Part 1, Dose Escalation Phase: Number of Participants With Dose-limiting Toxicities (DLTs) Based on National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.03

DLTs were defined as any of the following toxicities: Hematology, gastrointestinal, renal, hepatic or nonhematologic toxicities occurring during Cycle 1 in Dose Escalation Phase only and judged by the investigator as related to study drug. This included any Grade 4: neutropenia that does not resolve to Grade less than or equal to (\<=) 2 within 7 days, thrombocytopenia, anemia of any duration, diarrhea and/or vomiting irrespective of prophylaxis or appropriate treatment; Grade 3: thrombocytopenia requiring transfusion, thrombocytopenia and clinically significant bleeding, anemia if transfused or if lasting for more than 7 days, nausea, vomiting and/or diarrhea lasting more than 72 hours despite the use of optimal anti-emetic/antidiarrheal treatment, bilirubin, fatigue lasting less than 1 week, elevations in biochemistry laboratory values without associated clinical symptoms that last for \<=7 days; Grade greater than or equal to (\>=) 3 serum creatinine.

Time frame: Cycle 1 (Cycle length = 21 days)

Population: DLT analysis set included all participants in Dose Escalation phase (Part 1) who must have completed safety assessments through pre-dose on Cycle 2 Day 1 and must have received at least 17 of 21 (approximately 80 percent \[%\]) study days within Cycle 1, unless due to a DLT. This outcome measure was planned to be analyzed for Part 1 only.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedPart 1, Dose Escalation Phase: Number of Participants With Dose-limiting Toxicities (DLTs) Based on National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.030 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedPart 1, Dose Escalation Phase: Number of Participants With Dose-limiting Toxicities (DLTs) Based on National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.030 Participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedPart 1, Dose Escalation Phase: Number of Participants With Dose-limiting Toxicities (DLTs) Based on National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.030 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedPart 1, Dose Escalation Phase: Number of Participants With Dose-limiting Toxicities (DLTs) Based on National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.030 Participants
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedPart 1, Dose Escalation Phase: Number of Participants With Dose-limiting Toxicities (DLTs) Based on National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.030 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedPart 1, Dose Escalation Phase: Number of Participants With Dose-limiting Toxicities (DLTs) Based on National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.030 Participants
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedPart 1, Dose Escalation Phase: Number of Participants With Dose-limiting Toxicities (DLTs) Based on National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.030 Participants
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedPart 1, Dose Escalation Phase: Number of Participants With Dose-limiting Toxicities (DLTs) Based on National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.030 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedPart 1, Dose Escalation Phase: Number of Participants With Dose-limiting Toxicities (DLTs) Based on National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.030 Participants
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedPart 1, Dose Escalation Phase: Number of Participants With Dose-limiting Toxicities (DLTs) Based on National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.030 Participants
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedPart 1, Dose Escalation Phase: Number of Participants With Dose-limiting Toxicities (DLTs) Based on National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.030 Participants
Secondary

Area Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527

Time frame: Part 1, Cycle 1 Day 1 and Day 8: 0-24 hours post-dose (for QD dosing) and 0-10 hours post-dose (for BID dosing); Part 2, Cycle 1 Day 8: 0-24 hours post-dose (for QD dosing) and 0-10 hours post-dose (for BID dosing) (Cycle 1 length = 21 days)

Population: Pharmacokinetic (PK) analysis set: Participants who received at least 1 dose of study drug and had at least 1 evaluable plasma concentration. 'Overall Number of participants analyzed' signifies those who were evaluable for this outcome measure; 'Number analyzed' signifies participants who were evaluable at given timepoints. As planned, PK data was collected and reported together due to same dose and food conditions in Part 1 and 2 for H3B-6527 1000 mg (QD fed and fasted) and 500 mg (BID fed).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 168.9 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 57.5
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 850.8 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 47.5
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 1173 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 1891.9
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 8636 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 39.4
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 11631 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 271.8
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 8484 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 3217.3
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 1850 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 531.5
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 8784 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 431.8
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 11115 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 909.7
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 8798 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 337.8
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 81244 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 827.7
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 1400 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 187.5
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 85447 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 74.9
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 15671 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 98.7
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 12748 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 66.3
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 81838 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 179.3
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 1462 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 137
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 81056 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 36.9
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 1752 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 204.3
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 8809 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 237.3
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 1576 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 482.6
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedArea Under the Plasma Concentration-time Curve From Time 0 Through the Last Measurable Point (AUC0-t) of H3B-6527Cycle 1 Day 8622 nanogram*hour per milliliter (ng*h/mL)Geometric Coefficient of Variation 351.1
Secondary

Maximum Observed Plasma Concentration (Cmax) of H3B-6527

Time frame: Part 1, Cycle 1 Day 1 and Day 8: 0-24 hours post-dose (for QD dosing) and 0-10 hours post-dose (for BID dosing); Part 2, Cycle 1 Day 8: 0-24 hours post-dose (for QD dosing) and 0-10 hours post-dose (for BID dosing) (Cycle 1 length = 21 days)

Population: PK analysis set: Participants who received at least 1 dose of study drug and had at least 1 evaluable plasma concentration. 'Overall Number of participants analyzed' signifies those who were evaluable for this outcome measure; 'Number analyzed' signifies participants who were evaluable at given timepoints. As planned, PK data was collected and reported together due to same dose and food conditions in Part 1 and 2 for H3B-6527 1000 mg (QD fed and fasted) and 500 mg (BID fed).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 120.3 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 64.1
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 810.8 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 90.6
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 174.5 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 1389.4
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 8194 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 45.6
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 1395 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 133.7
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 899.6 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 5300.4
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 1225 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 470.2
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 8187 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 339.1
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 1182 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 494.6
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 8177 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 370.3
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 8362 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 898.5
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 1136 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 429.4
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 8827 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 40.6
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 1904 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 34.2
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 1540 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 79.9
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 8502 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 95.2
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 1124 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 159.1
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 8251 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 46.5
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 1255 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 251.6
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 8211 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 237.2
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 1163 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 303.2
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedMaximum Observed Plasma Concentration (Cmax) of H3B-6527Cycle 1 Day 8167 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 202.7
Secondary

Part 2, Dose Expansion Phase: Duration of Response (DOR) Based on Modified Response Evaluation Criteria in Solid Tumors (mRECIST) v1.1

DOR was defined as the time from the date of first documented CR or PR based on modified RECIST v1.1 until the first documentation of disease progression (PD) as determined by the investigator or death, whichever comes first. CR was defined as the disappearance of all target lesions and non-target lesions. PR was defined as at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters. PD was defined as at least a 20% increase in the sum of long diameter (LD) of target and non-target lesions as compared with the smallest sum of LD and the increase of LD was at least 5 mm (including new lesions).

Time frame: From the date of first documented CR or PR up to approximately 36.7 months

Population: Full analysis set included all participants who received at least 1 dose of the study drug. Here, overall number of participants analyzed N included the participants who had CR or PR. This outcome measure was planned to be analyzed for Part 2 only.

ArmMeasureValue (MEDIAN)
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedPart 2, Dose Expansion Phase: Duration of Response (DOR) Based on Modified Response Evaluation Criteria in Solid Tumors (mRECIST) v1.1NA months
Secondary

Part 2, Dose Expansion Phase: Objective Response Rate (ORR) Based on Modified Response Evaluation Criteria in Solid Tumors (mRECIST) v1.1

ORR was defined as the percentage of participants achieving a best overall confirmed response of partial response (PR) or complete response (CR) (PR + CR), from the first dose date until disease progression/recurrence. Responses (PR or CR) were confirmed no less than 4 weeks after the initial response. CR was defined as the disappearance of all target lesions and non-target lesions. Any pathological lymph nodes (target or non-target) had to be reduced in the short axis to less than 10 millimeter (mm). PR was defined as at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters. The tumor assessment was done using number of lesions based on modified RECIST v1.1 for assessing tumor burden up to 10 target lesions with up to 5 target lesions per organ.

Time frame: From the first dose date until disease progression/recurrence or up to approximately 36.7 months

Population: Full analysis set included all participants who received at least 1 dose of the study drug. Here, overall number of participants analyzed signifies participants who were evaluable for this outcome measure. This outcome measure was planned to be analyzed for Part 2 only.

ArmMeasureValue (NUMBER)
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedPart 2, Dose Expansion Phase: Objective Response Rate (ORR) Based on Modified Response Evaluation Criteria in Solid Tumors (mRECIST) v1.15.6 percentage of participants
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedPart 2, Dose Expansion Phase: Objective Response Rate (ORR) Based on Modified Response Evaluation Criteria in Solid Tumors (mRECIST) v1.10.0 percentage of participants
Secondary

Part 2, Dose Expansion Phase: Overall Survival (OS)

OS was defined as the time from the first dose date to the date of death. OS was assessed using Kaplan-Meier method. The time of death was censored for participants who were without death information at the time of OS analysis.

Time frame: From the date of first dose of study drug until date of death from any cause (up to approximately 36.7 months)

Population: Full analysis set included all participants who received at least 1 dose of the study drug. Here, overall number of participants analyzed signifies participants who were evaluable for this outcome measure. This outcome measure was planned to be analyzed for Part 2 only.

ArmMeasureValue (MEDIAN)
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedPart 2, Dose Expansion Phase: Overall Survival (OS)9.5 months
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedPart 2, Dose Expansion Phase: Overall Survival (OS)7.7 months
Secondary

Part 2, Dose Expansion Phase: Progression-free Survival (PFS) Based on Modified Response Evaluation Criteria in Solid Tumors (mRECIST) v1.1

PFS was defined as the time from the first dose date to the date of the first documentation of PD as determined by the investigator or death (whichever occurs first). PD was defined as at least a 20% increase in the sum of LD of target and non-target lesions as compared with the smallest sum of LD and the increase of LD was at least 5 mm (including new lesions).

Time frame: From the first dose date to the date of the first documentation of PD as determined by the investigator or death (whichever occurs first) up to approximately 36.7 months

Population: Full analysis set included all participants who received at least 1 dose of the study drug. Here, overall number of participants analyzed signifies participants who were evaluable for this outcome measure. This outcome measure was planned to be analyzed for Part 2 only.

ArmMeasureValue (MEDIAN)
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedPart 2, Dose Expansion Phase: Progression-free Survival (PFS) Based on Modified Response Evaluation Criteria in Solid Tumors (mRECIST) v1.12.6 months
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedPart 2, Dose Expansion Phase: Progression-free Survival (PFS) Based on Modified Response Evaluation Criteria in Solid Tumors (mRECIST) v1.13.0 months
Secondary

Part 2, Dose Expansion Phase: Time to Response (TTR) Based on Modified Response Evaluation Criteria in Solid Tumors (mRECIST) v1.1

TTR was defined as the time from the first dose date to the date of first documented CR/PR. CR was defined as the disappearance of all target lesions and non-target lesions. Any pathological lymph nodes (target or non-target) had to be reduced in the short axis to less than 10 mm. PR was defined as at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters.

Time frame: From date of first dose of study drug until CR or PR (up to approximately 36.7 months)

Population: Full analysis set included all participants who received at least 1 dose of the study drug. Here, overall number of participants analyzed signifies participants who had CR or PR. This outcome measure was planned to be analyzed for Part 2 only.

ArmMeasureValue (MEDIAN)
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedPart 2, Dose Expansion Phase: Time to Response (TTR) Based on Modified Response Evaluation Criteria in Solid Tumors (mRECIST) v1.1NA months
Secondary

Time of Maximum Observed Plasma Concentration (Tmax) of H3B-6527

Time frame: Part 1, Cycle 1 Day 1 and Day 8: 0-24 hours post-dose (for QD dosing) and 0-10 hours post-dose (for BID dosing); Part 2, Cycle 1 Day 8: 0-24 hours post-dose (for QD dosing) and 0-10 hours post-dose (for BID dosing) (Cycle 1 length = 21 days)

Population: PK analysis set: Participants who received at least 1 dose of study drug and had at least 1 evaluable plasma concentration. 'Overall Number of participants analyzed' signifies those who were evaluable for this outcome measure; 'Number analyzed' signifies participants who were evaluable at given timepoints. As planned, PK data was collected and reported together due to same dose and food conditions in Part 1 and 2 for H3B-6527 1000 mg (QD fed and fasted) and 500 mg (BID fed).

ArmMeasureGroupValue (MEDIAN)
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 12.00 hours
Part 1, Dose Escalation Phase: H3B-6527 300 mg QD FastedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 84.00 hours
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 11.00 hours
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FastedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 80.52 hours
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 14.00 hours
Part 1, Dose Escalation Phase: H3B-6527 600 mg QD FedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 84.52 hours
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 12.02 hours
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FastedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 82.00 hours
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 16.00 hours
Part 1, Dose Escalation Phase: H3B-6527 1000 mg QD FedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 82.00 hours
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 82.10 hours
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FastedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 11.00 hours
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 85.86 hours
Part 1, Dose Escalation Phase: H3B-6527 1400 mg QD FedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 15.00 hours
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 12.100 hours
Part 1, Dose Escalation Phase: H3B-6527 2000 mg QD FedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 84.00 hours
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 12.12 hours
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FastedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 84.00 hours
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 14.02 hours
Part 1, Dose Escalation Phase: H3B-6527 500 mg BID FedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 84.00 hours
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 12.02 hours
Part 1, Dose Escalation Phase: H3B-6527 700 mg BID FedTime of Maximum Observed Plasma Concentration (Tmax) of H3B-6527Cycle 1 Day 84.12 hours

Source: ClinicalTrials.gov · Data processed: Feb 21, 2026