An Open-label Study to Investigate the Efficacy and Safety of Dato-DXd + Rilvegostomig vs SoC in Adult Participants With High-risk MIUC

Condition(s) studied

Investigational drug(s) / intervention(s)

Dato-DXd: Dato-DXd is an ADC comprised of a recombinant humanised anti-TROP2 IgG1 mAb, MAAP-9001a, which is covalently conjugated via a cleavable drug-linker, MAAA1162a (the complex of MAAA-1181a and a maleimide tetrapeptide linker), using thioether bonds to the topoisomerase I inhibitor DXd.

Rilvegostomig: Rilvegostomig is a monovalent, bispecific, humanised, IgG1 mAb engineered with an Fc domain that carries a triple mutation (L234F/L235E/P331S) designed to reduce Fc-mediated effector functions. Rilvegostomig contains 2 distinct paratopes that bind to human TIGIT and PD-1 and inhibit binding to their respective immuno-suppressive ligands.

Durvalumab: A fully human monoclonal antibody that blocks the PD-L1 checkpoint to restore anti-tumor T-cell activity. Durvalumab is approved for Muscle invasive bladder cancer (MIBC) as perioperative regime.

Nivolumab: A fully human monoclonal antibody against PD-1, promoting anti-tumor immunity. Approved across many malignancies such as melanoma, NSCLC, renal cell carcinoma, Hodgkin lymphoma, hepatocellular carcinoma, and colorectal cancer (dMMR/MSI-H), often alone or with ipilimumab. It's used in several cancers, notably unresectable stage III non-small cell lung cancer after chemoradiation and extensive-stage small cell lung cancer in combination regimens, among others, and is also approved for patients with muscle-invasive urothelial carcinoma (MIUC) at high risk of recurrence in the adjuvant setting.

Pembrolizumab: A humanized monoclonal antibody targeting PD-1, enhancing T-cell-mediated immune responses against tumors. Indications span multiple cancers including melanoma, NSCLC, head and neck squamous cell carcinoma, urothelial carcinoma, MSI-H/dMMR tumors, and more.

Enfortumab vedotin: An antibody-drug conjugate (ADC) comprised of a fully human anti-Nectin-4 IgG1 monoclonal antibody, linked via a protease-cleavable maleimide-based linker to the microtubule-disrupting agent monomethyl auristatin E (MMAE), which is conjugated through thioether bonds. Upon binding to Nectin-4-expressing cells, the ADC is internalized and releases MMAE, leading to disruption of microtubule dynamics and subsequent tumor cell death. Enfortumab vedotin is approved in urothelial cancers.

Study summary

Purpose: to assess efficacy and safety of Dato-DXd + rilvegostomig as adjuvant therapy versus SoC in MIUC participants with high-risk residual disease after radical resection.

Study details:

Duration: \~78 months (6.5 years) from FSI to last subject visit Treatment length: up to \~12 months, depending on randomized arm Visit frequency: every 3 weeks in Arms 1 and 2; every 2-4 weeks per SoC in Arm 3

Eligibility

Primary outcome measure(s)

• To demonstrate the superiority of Dato-DXd + rilvegostomig (Arm 1) relative to SoC (Arm 3) by assessment of disease-free survival (DFS) (based on Investigator assessments). — From randomisation until disease recurrence as assessed by investigator or death due to any cause (anticipated to be up to 49 months after the first subject in).
  DFS is defined as the time from randomisation until disease recurrence (local urothelial tract, local non urothelial tract or distant) per RECIST 1.1 as assessed by Investigator, or death due to any cause. The analysis will include all randomised participants as randomised. All events will be included, regardless of whether the participant discontinues study treatment or receives another anti-cancer therapy. The measure of interest is the HR of DFS.

Trial sites (160)

+ 120 more sites — see the full list on the official registry below.