Discovery and Preclinical Characterization of XMT-1660, an Optimized B7-H4-Targeted Antibody-Drug Conjugate for the Treatment of Cancer.
Dorin Toader, Shawn P Fessler, Scott D Collins...
https://pubmed.ncbi.nlm.nih.gov/37294948/Actively Recruiting
Led by Day One Biopharmaceuticals, Inc. · Updated on 2026-06-29
360
Participants Needed
26
Research Sites
43 weeks
Total Duration
Researchers are evaluating a drug called Emi-Le Emiltatug Ledadotin in participants with various solid tumors, including recurrent, advanced, or metastatic cancers such as breast, endometrial, ovarian, fallopian tube, primary peritoneal cavity cancers, and adenoid cystic carcinoma. This first-in-human study aims to test the safety, side effects, and anti-tumor activity of Emi-Le. The trial includes dose-finding, safety, and effectiveness phases to better understand Emi-Les role in treating these cancers. The study has three parts Dose Escalation, Dose Expansion, and a Phase 2 part called EMBLEM-1. In Dose Escalation, researchers determine the appropriate dose of Emi-Le. Then, Dose Expansion uses that dose to further assess safety and response in solid tumors. In EMBLEM-1, the focus is on evaluating Emi-Les effect on aggressive Adenoid Cystic Carcinoma and continuing safety monitoring. Emi-Le is given intravenously through a vein or port catheter. Participants will undergo screenings including tumor tissue collection for testing and brain MRI if indicated. During treatment, researchers will monitor adverse events, tumor response, survival, and other health measures over up to approximately three years. The main outcomes include frequency of dose-limiting toxicities, overall response rate, and safety. The study involves regular assessments to track Emi-Les impact and participants well-being throughout the trial.
CONDITIONS
A Study of Emiltatug Ledadotin (Emi-Le) in Participants With Solid Tumors
D
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Day One Biopharmaceuticals, Inc.
Lead Sponsor
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 | Emi‑Le (trial investigational drug) | Standard treatments (chemo, immuno‑, targeted therapy) |
|---|---|---|
| What it is | An investigational antibody‑drug conjugate (Emiltatug Ledadotin) given intravenously in a single‑arm study for recurrent or advanced solid tumors | Existing treatments vary by tumor type but commonly include chemotherapy, targeted agents, immunotherapy or combination regimens |
| Role in the trial | Only investigational treatment arm — all participants receive Emi‑Le | Not part of the trial — represents how patients would be managed outside the study |
| Primary use | To evaluate safety (dose‑limiting toxicities), objective response rate, and pharmacokinetics in dose escalation and expansion cohorts | To treat recurrent or advanced solid tumors using established systemic therapies appropriate to tumor type |
| How it is given or performed | Given by intravenous infusion as defined in the trial protocol | Administration route depends on regimen; many options are intravenous while some can be oral |
| Evidence status | Safety and efficacy unknown yet — being assessed in early‑phase trial | Established evidence supports benefit of chemotherapy and targeted agents in respective cancers |
| Important risks | Unknown — risks being monitored as part of dose escalation study | Known toxicities with chemotherapy and targeted agents, such as myelosuppression, neuropathy, or immunotherapy‑related effects |
| Important limitations | Single‑arm early‑phase design with no randomized control, unknown long‑term outcomes | Regimens vary by tumor biology and prior therapies; efficacy and tolerability depend on individual disease context |
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.
You may qualify if you...
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Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
Duration - Approximately 17 months
Participants receive Emi-Le to find the appropriate dose and assess initial safety and side effects.
Duration - Up to approximately 3 years
Participants receive Emi-Le at the established dose to further evaluate safety and effectiveness in solid tumors.
Duration - Up to approximately 3 years
Participants with aggressive Adenoid Cystic Carcinoma receive Emi-Le and continue safety and efficacy monitoring.
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NA
Model
SINGLE_GROUP
Primary Purpose
TREATMENT
Number of Arms
1
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Dorin Toader, Shawn P Fessler, Scott D Collins...
https://pubmed.ncbi.nlm.nih.gov/37294948/Day One Biopharmaceuticals, Inc.
Lead Sponsor