Phase Ib: Explore the safety and tolerability of BL-M07D1 to further define RP2D in a variety of solid tumors, including locally advanced or metastatic urinary and gastrointestinal tumors. Phase II: To explore the efficacy of BL-M07D1 in patients with a variety of solid tumors including locally advanced or metastatic HER2-positive/low-expressing urinary and gastrointestinal tumors.
Voluntarily sign the informed consent form and comply with the protocol requirements;
No gender restrictions;
Age: ≥18 years and ≤75 years;
Expected survival time ≥3 months;
Received chemotherapy, biological therapy, immunotherapy, or other antitumor treatments within 4 weeks or 5 half-lives prior to the first dose;
Previously treated with ADC drugs containing camptothecin derivatives as payloads;
History of severe cardiovascular or cerebrovascular diseases;
Active autoimmune or inflammatory diseases;
Single group
BL-M07D1
DrugBL-M07D1 was administered by intravenous infusion every 3 weeks in 3-week cycles.
Phase Ib: Recommended Phase II Dose (RP2D)
The RP2D is defined as the dose level chosen by the sponsor (in consultation with the investigators) for phase II study, based on safety, tolerability, efficacy, PK, and PD data collected during the dose escalation study.
Phase II: Objective response rate (ORR)
ORR is defined as the percentage of participants, who has a CR (disappearance of all target lesions) or PR (at least a 30% decrease in the sum of diameters of target lesions). The percentage of participants who experiences a confirmed CR or PR is according to RECIST 1.1.
Phase Ib/II: Treatment-Emergent Adverse Event (TEAE)
TEAE is defined as any adverse and unexpected change in body structure, function, or chemistry or any exacerbation of an existing condition (i.e., any clinically significant adverse change in frequency and/or intensity) during treatment. The type, frequency, and severity of TEAE will be assessed during treatment.
Phase Ib: Objective response rate (ORR)
ORR is defined as the percentage of participants, who has a CR (disappearance of all target lesions) or PR (at least a 30% decrease in the sum of diameters of target lesions). The percentage of participants who experiences a confirmed CR or PR is according to RECIST 1.1.
Phase Ib/II: Disease control rate (DCR)
The DCR is defined as the percentage of participants who has a CR, PR, or Stable Disease (SD: neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease \[PD: at least a 20% increase in the sum of diameters of target lesions and an absolute increase of at least 5 mm. The appearance of one or more new lesions is also considered PD\]).
Phase Ib/II: Duration of response (DOR)
The DOR for a responder is defined as the time from the participant's initial objective response to the first date of either disease progression or death, whichever occurs first.
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