SHR-A1811 Versus Investigator's Chemotherapy in Recurrent/Metastatic Breast Cancer Clinical Trial

Hengrui Medicine

Status and phase: Enrolling; Phase 3

Conditions: Breast Cancer

Treatments: Drug: Capecitabine/Eribulin/Gemcitabine/Paclitaxel/Nab-paclitaxel; Drug: SHR-A1811

Study type: Interventional

Funder types: Industry

Identifiers

NCT05814354

SHR-A1811-III-306

Details and patient eligibility

About

The aim of this study was to evaluate whether the progression-free survival of SHR-A1811 was superior to investigator-selected chemotherapy in patients with HER2-low recurrent/metastatic breast cancer. To evaluate whether SHR-A1811 is superior to investigator-selected chemotherapy in patients with HER2-low recurrent/metastatic breast cancer.

Enrollment: 530 estimated patients

Sex: Female

Ages: 18 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Low-HER2 expression defined as IHC 2+/ISH- or IHC 1+ (ISH- or untested).
2. HR-positive breast cancer with at least one endocrine therapy and disease progression was judged by the investigator to no longer benefit from endocrine therapy.
3. Has been treated with 0 to 1 prior lines of chemotherapy in the metastatic setting.
4. Has documented radiologic progression (during or after most recent treatment).
5. Has at least 1 protocol-defined measurable lesion.
6. Has protocol-defined adequate cardiac, bone marrow, renal, hepatic and blood clotting functions.
7. Fertile women (WOCBP) subjects agreed to use highly effective contraception and not to breastfeed from the time of study screening until 7 months after receiving the last study medication; a fertile woman must have a negative serum pregnancy test result within 7 days prior to the first treatment.

Exclusion criteria

1. Has known active central nervous system (CNS) metastases. Subjects with previously treated brain metastases may participate provided they are stable.
2. A history of human immunodeficiency virus (HIV) infection is known, or has an active autoimmune disease.
3. History of interstitial lung disease or pneumonia requiring oral or intravenous steroids.
4. Has moderate or severe cardiovascular disease.
5. Active HBV(hepatitis B) or HCV (Hepatitis C virus)-infected subjects.
6. Any other malignancies within 5 years except for those with negligible risk of metastasis or death.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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530 participants in 2 patient groups

SHR-A1811

Experimental group

Treatment:

Drug: SHR-A1811

Physician's Choice

Active Comparator group

Description:

Capecitabine/Eribulin/Gemcitabine/Paclitaxel/Nab-paclitaxel

Treatment:

Drug: Capecitabine/Eribulin/Gemcitabine/Paclitaxel/Nab-paclitaxel