Phase 12 Study of Ifinatamab Deruxtecan I-DXd for Advanced Solid Malignant Tumors
Evaluating Safety, Dose, and Antitumor Effects in Patients
Led by Daiichi Sankyo · Updated on 2026-05-29
250
Participants Needed
28
Research Sites
130 weeks
Total Duration
AI-Summary
What this Trial Is About
Researchers are evaluating ifinatamab deruxtecan I-DXd, a drug given for the first time to humans, in people with advanced solid tumors that have not been cured by other treatments. The study has two parts the first part aims to find the safest dose and the best dose for further study, while the second part focuses on assessing the drugs safety and its effect on tumors when used alone. This research is expected to last about five years from the first enrollment to the last participant finishing the study.
Participants receive I-DXd through an intravenous IV infusion every three weeks. In the dose escalation part, participants received increasing doses to find the maximum tolerated dose this phase is now closed. The dose expansion part currently enrolls participants who receive the recommended dose determined earlier. Treatment cycles continue as long as participants benefit, do not withdraw, do not experience worsening disease, or unacceptable side effects.
During the study, participants have regular evaluations including scans to measure tumor size, blood tests, and monitoring for side effects and immune reactions. Researchers track adverse events and study how the drug behaves in the body over several treatment cycles, each lasting 21 days. Safety and tumor response are closely observed until disease progression or after up to eight cycles. Participants may continue treatment beyond eight cycles if benefiting from the drug.
CONDITIONS
Brief Title
Study of Ifinatamab Deruxtecan (DS-7300a, I-DXd) in Participants With Advanced Solid Malignant Tumors
Research Team
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(Japan sites) Daiichi Sankyo Contact for Clinical Trial Information
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(US sites) Daiichi Sankyo Contact for Clinical Trial Information
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This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
Factors
Ifinatamab Deruxtecan (I-DXd)
Current Standard Therapy
What it is
A B7-H3-targeting antibody-drug conjugate (ADC) combining an anti-B7-H3 antibody with a topoisomerase I inhibitor payload, under study for adults with advanced solid malignant tumors.
Standard therapies may include approved chemotherapy, immunotherapy, targeted agents, or best supportive care depending on the specific tumor type, prior treatment, and guideline recommendations.
Role in trial
Primary research focus: effectiveness, safety, tolerability, and pharmacokinetics of I-DXd in a heterogeneous advanced solid tumor population, through dose escalation and expansion cohorts.
Represents usual care choices or best systemic therapies used outside clinical trials, as recommended for each tumor type and situation.
Primary use
Investigational therapy for adults with advanced, unresectable, or metastatic solid tumors that have progressed after or are unsuitable for established therapies.
Treatment with evidence-based regimens (such as chemotherapy or checkpoint inhibitor immunotherapy) where available, or best supportive care if no guideline-recommended systemic option remains.
How it is given
Administered intravenously on a regular schedule in 21-day cycles, as specified by the assigned dose cohort during escalation or fixed-dose expansion.
Given according to the specific drug selected (e.g., intravenous infusion for chemotherapy, oral for some targeted therapies, or subcutaneous/intravenous for immunotherapy), as appropriate for tumor type and regimen.
Evidence status
Investigation ongoing; dose-escalation phase data published show preliminary anti-tumor activity and tolerability in heavily pre-treated solid tumor patients. Larger and longer-term studies are needed to confirm benefit and risks.
Efficacy and safety of each therapy is established by phase 3 or comparable studies for each tumor type in patients who are eligible for guideline-recommended options.
Important limitations
Single-arm, early-phase study without a direct comparator; results may not generalize across distinct tumor types or more typical clinical populations; safety profile continues to be defined.
Not all patients with advanced solid tumors are eligible for standard therapies; prior exposure, specific organ function, or intolerance may limit use. Effectiveness of standard therapies diminishes in more heavily pre-treated or refractory populations.
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
Who Can Participate
Age: 18Years +
All Genders
Eligibility Criteria
You may qualify if you...
Eastern Cooperative Oncology Group (ECOG) Performance Status score of 0 or 1
At least one measurable lesion by RECIST Version 1.1 on CT or MRI, not from a previously irradiated site unless showing progression
Adequate cardiac, hematopoietic, renal, and hepatic function
Adequate treatment washout period before starting study treatment
Pathologically confirmed advanced or metastatic solid tumors such as head and neck squamous cell carcinoma, esophageal squamous cell carcinoma, non-small cell lung cancer, small cell lung cancer, bladder cancer, sarcoma, endometrial cancer, melanoma, adenocarcinoma CRPC, or breast cancer refractory to standard treatment or without standard treatment options
For Expansion Cohort 4 2L ESCC only: disease progression after platinum-based and immune checkpoint inhibitor treatment, with a maximum of one prior systemic therapy line for unresectable advanced or metastatic ESCC
You will not qualify if you...
Prior treatment with B7-H3 targeted agents, including I-DXd
Prior discontinuation of antibody drug conjugates containing an exatecan derivative due to treatment-related toxicities
Multiple primary malignancies within 3 years except certain adequately treated cancers
Uncontrolled significant cardiovascular disease
Severe pulmonary compromise from illnesses or conditions requiring supplemental oxygen
Uncontrolled infection needing systemic therapy
Substance abuse or medical conditions that increase safety risk or interfere with study participation or evaluation as judged by the Investigator
Your Study Journey
Screening
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Treatment
Duration - Up to 8 cycles, each cycle lasting 21 days, until disease progression or discontinuation
Participants receive intravenous infusions of Ifinatamab Deruxtecan (I-DXd) every 3 weeks as monotherapy to treat advanced solid tumors.
Infusions every 3 weeks with assessments during each cycle
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NON_RANDOMIZED
Model
SEQUENTIAL
Primary Purpose
TREATMENT
Number of Arms
2
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Published Research Related To This Trial
Ifinatamab deruxtecan, a B7-H3-directed antibody-drug conjugate, in patients with advanced solid tumours (IDeate-PanTumor01): dose-escalation results from a phase 1/2 trial.
Melissa L Johnson, Manish R Patel, Gerald S Falchook...