Exploratory Study of SHR-A1811 Via Different Administration Routes in Patients

Trial statusNot yet recruiting
Trial phasePhase 2
Trial typeInterventional
Biological sexAll
Age18+
SponsorTianjin Medical University Cancer Institute and Hospital

About this trial

An Exploratory Study on the Efficacy and Safety of Different Administration Routes of SHR-A1811 in the Treatment of HER2-Positive Advanced Breast Cancer

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Aged ≥ 18 years old.

Pathologically confirmed HER2-positive advanced breast cancer. HER2 positivity is defined as IHC 3+ in >10% immunoreactive cells or HER2 gene amplification confirmed by in situ hybridization (ISH), which shall be verified by the pathology department of the participating center.

Patients with advanced breast cancer who have received no more than 2 lines of prior systemic therapies.

Expected survival time ≥ 4 months.

Disqualifiers

Prior treatment with anti-HER2 antibody-drug conjugates (ADC).

Known leptomeningeal metastasis or active brain metastasis.

A history of other malignancies within the past 5 years, except for cured cervical carcinoma in situ, cutaneous basal cell carcinoma and squamous cell carcinoma. Malignancies cured solely by surgery more than 5 years prior to enrollment are allowed.

Major surgery or severe trauma within 4 weeks before enrollment, or planned major surgery during the study period.

Trial design

Design model

Parallel

Treatments tested in this trial

  • SHR-A1811

    Drug

    SHR-A1811 administered weekly

  • SHR-A1811

    Drug

    SHR-A1811 administered every two weeks (q2w)

  • SHR-A1811

    Drug

    SHR-A1811 administered every three weeks (q3w)

Treatment groups

60 Participants
are divided into 3 treatment groups
Group A: Arm 1: Weekly administration groupExperimental treatment 1 intervention
Group B: Arm 2: Every-two-weeks (Q2W) administration groupExperimental treatment 1 intervention
Group C: Arm 3: Every-three-weeks (Q3W) administration groupExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Objective Response Rate (ORR)

Defined as the proportion of patients who achieve confirmed complete response (CR) or partial response (PR) to the study treatment, assessed per RECIST 1.1 criteria.

Time frame
From enrollment until disease progression or up to 2 years

Secondary outcomes

1

Progression-Free Survival (PFS)

Defined as the time from study enrollment to the first documentation of disease progression (per RECIST 1.1) or all-cause death, whichever occurs first.

Time frame
From enrollment until disease progression or up to 2 years

Other outcomes

1

Overall Survival (OS)

Defined as the time from study enrollment to all-cause death.

Time frame
From enrollment until all-cause death.
2

Safety and Tolerability

Number of participants with treatment-related adverse events as assessed by CTCAE v5.0

Time frame
From first dose of study drug up to 30 days after last dose

Sponsors and contacts

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