The Phase 1 clinical study will evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and preliminary anti-tumor activity of BD200 in adult participants with advanced solid cancers. This is an open-label study consisting of two-parts: Part A Dose Escalation and Part B Dose Expansion. At least one tumor-specific cohort will be selected in Part B Dose Expansion.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
110
Infusion
Infusion
Phase 1 Part A
Number of Participants with Dose Limiting Toxicities (DLTs)
Time frame: Cycle 1 Day 1 through Cycle 1 Day 21 [approximately 21 days]
Phase 1 Part A & Part B
Number of Participants with Treatment-emergent Adverse Events (TEAEs) and AEs Leading to Dose Reduction, Dose Interruption, and Dose Discontinuation
Time frame: Cycle 1 Day 1 through End of Treatment (EOT) (until no longer receives clinical benefit, has unacceptable toxicity and meets protocol-defined discontinuation criteria as assessed by Investigator/Sponsor [approximately 12 months]
Phase 1 Part A & Part B
Objective Response Rate (ORR) per Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 as Assessed by Investigator
Time frame: Cycle 1 Day 1 through EOT (until participant is no longer receiving clinical benefit, has unacceptable toxicity, and meets protocol-defined discontinuation criteria as assessed by Investigator/Sponsor [up to approximately 12 months])
Phase 1 Part A & Part B
Duration of Response (DOR) per RECIST Version 1.1 as Assessed by Investigator
Time frame: Cycle 1 Day 1 through EOT (until participant is no longer receiving clinical benefit, has unacceptable toxicity, and meets protocol-defined discontinuation criteria as assessed by Investigator/Sponsor [up to approximately 12 months]
Phase 1 Part A & Part B
Area Under the Concentration Time Curve (AUC) of BD200
Time frame: Cycle 1 Day 1 through EOT (until participant is no longer receiving clinical benefit, has unacceptable toxicity, and meets protocol-defined discontinuation criteria as assessed by Investigator/Sponsor [up to approximately 12 months])
Phase 1 Part A & Part B
Maximum Observed Plasma Concentration (Cmax) of BD200
Time frame: Cycle 1 Day 1 through EOT (until participant is no longer receiving clinical benefit, has unacceptable toxicity, and meets protocol-defined discontinuation criteria as assessed by Investigator/Sponsor [up to approximately 12 months])
Phase 1 Part A & Part B
Number of Participants with Anti-drug Antibodies (ADAs) in Blood
Time frame: Cycle 1 Day 1 through End of Treatment (EOT) (until no longer receives clinical benefit, has unacceptable toxicity and meets protocol-defined discontinuation criteria as assessed by Investigator/Sponsor [up to approximately 12 months]
Phase 1 Part A
ORR per RECIST Version 1.1 as Assessed by Investigator
Time frame: Cycle 1 Day 1 through End of Treatment (EOT) (until no longer receives clinical benefit, has unacceptable toxicity and meets protocol-defined discontinuation criteria as assessed by Investigator/Sponsor [up to approximately 12 months]
Phase 1 Part A
DOR per RECIST Version 1.1 as Assessed by Investigator
Time frame: Cycle 1 Day 1 through EOT (until participant is no longer receiving clinical benefit, has unacceptable toxicity, and meets protocol-defined discontinuation criteria as assessed by Investigator/Sponsor [up to approximately 12 months])
Phase 1 Part B
IHC biopsy data of Trop-2 and Nectin 4 Expression
Time frame: Cycle 1 Day 1 through EOT [up to approximately 12 months]
Phase 1 Part B
Progression Free Survival (PFS) per RECIST Version 1.1 as Assessed by Investigator
Time frame: Cycle 1 Day 1 through EOT (until participant is no longer receiving clinical benefit, has unacceptable toxicity, and meets protocol-defined discontinuation criteria as assessed by Investigator/Sponsor [up to approximately 12 months])
Phase 1 Part B
Overall Survival (OS)
Time frame: Cycle 1 Day 1 through EOT (until participant is no longer receiving clinical benefit, has unacceptable toxicity, and meets protocol-defined discontinuation criteria as assessed by Investigator/Sponsor [up to approximately 12 months])
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