WO46069 - A Two-part, Seamless, Multicenter, Randomized, Open-label, Adaptive Phase II/III Study of the Blood-brain Barrier Penetrant RO7771950 Versus Tucatinib, Both in Combination With Trastuzumab and Capecitabine, in Patients With Pretreated Unresectable Locally Advanced or Metastatic HER2-Positive Breast Cancer, With or Without Central Nervous System Metastases

Studio Clinico

Patologia: Neoplasie della mammella

Osservazionale-Sperimentale: Sperimentale

Monocentrico-Multicentrico: Multicentrico

Randomizzato: Sì

Fase di studio: II, III

Linee di trattamento: Seconda linea

Criteri di inclusione: 

- Pathologically documented locally advanced inoperable (LAI) or metastatic breast cancer (MBC) with confirmed HER2-positive status by central laboratory.
- Measurable disease as per by RECIST v1.1 in stage 1. Non-measurable disease allowed in stage 2.
- Previously treated (stable or progressive) or previously untreated CNS metastases, or leptomeningeal metastases.
- At least one prior line of anti-HER2-based therapy for LAI or metastatic disease.
- Prior anti-HER2 antibody-drug conjugate (ADC), such as trastuzumab-deruxtecan (T-DXd) or trastuzumab emtansine (T-DM1), in any treatment setting. Participants without prior ADC therapy may only be enrolled if approved standard-of-care (SOC) anti-HER2 ADC is not locally accessible at screening, or if there is a prospectively documented clinical contraindication.
- Prior tyrosine kinase inhibitor (TKI) in the (neo)adjuvant setting provided completion is > 12 months ahead of LAI occurrence. 
- Prior treatment with TKIs for LAI/MBC is not permitted.
- Has protocol-defined adequate organ and bone marrow function.
- Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1.
- Baseline left ventricular ejection fraction (LVEF) ≥ 50%.

Criteri di esclusione: 

- Concurrent anti-cancer treatment, or treatment with investigational therapy within 28 days prior to initiation of study treatment.
- Known active/untreated hepatitis B or C or chronic liver disease.
- Clinically significant cardiovascular disease or risk, including heart failure (New York Heart Association (NYHA) ≥ II), ischemic heart disease or recent coronary events/interventions, clinically significant arrhythmias or electrocardiogram (ECG) abnormalities, QT prolongation or risk of ventricular dysrhythmias, poorly controlled hypertension, peripheral arterial disease, dilated cardiomyopathy, or unstable angina.
- Clinically significant electrolyte abnormalities (e.g., hypokalemia, hypomagnesemia, hypocalcemia), or family history of sudden unexplained death or long QT syndrome.
- Concomitant use of any drug or herbal medicine known to strongly inhibit or induce CYP3A4 or CYP2C8 activity, oral coumarin-derivative anticoagulants.

Trattamento sperimentale: 

RO7771950 + trastuzumab e capecitabina

Trattamento di controllo: 

tucatinib + trastuzumab e capecitabina

Centri partecipanti

Nord Italia

Centro Italia

Sud Italia e isole

Informazioni Generali

Protocollo

Numero di iscrizione a registro: 2025-524498-17-00

Data di inserimento: 23.06.2026

Promotore

Hoffmann-La Roche

Principal Investigator ITALIA

Riferimento: Dr. - -

Telefono: 00000

Email: na@na.it

Localita: -