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Astragalus polysaccharides (APS), acting as an immunomodulator, is known to modulate the tumor microenvironment and inhibit tumor growth and progression, thereby suggesting potential as an adjuvant cancer therapy to improve treatment outcomes.
PG2 (APS Injection) has completed a clinical trial (Protocol name: PG2 Treatment for Reduction of Chemotherapy-Induced Toxicity and Encouraging Compliance with Chemotherapy among Stage II/III Breast Cancer Patients Receiving Adjuvant Chemotherapy , NCT03314805, hereinafter called the parent trial) aimed to show that PG2 treatment among stage II/III breast patients under adjuvant Epirubicin and cyclophosphamide (EC) regimen in reduction of chemotherapy-induced toxicities and encouraging compliance with chemotherapy. This study will further explore whether the addition of PG2 can delay cancer recurrence or metastasis, thereby conferring substantial survival benefits for early breast cancer patients with adjuvant chemotherapy by retrospectively collecting recurrence, metastasis, and survival information from patients enrolled in the parent trial.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Treatment | Astragalus polysaccharides 500 mg |
| |
| Control | Placebo |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Astragalus polysaccharides 500 mg | Drug | Adjuvant chemotherapy in combination with PG2 |
|
| Measure | Description | Time Frame |
|---|---|---|
| Distant metastasis-free survival | Time from random assignment to any first event of distant recurrence, death from any cause, or second (non-breast) invasive cancer. | from random assignment to Aug 27, 2025 |
| Measure | Description | Time Frame |
|---|---|---|
| Disease-free survival | Time from random assignment to any first event of invasive ipsilateral or contralateral breast recurrence, local or regional invasive recurrence, distant recurrence, second (non-breast) invasive cancer, or death from any cause. | from random assignment to Aug 27, 2025 |
| Overall Survival |
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Inclusion Criteria:
Exclusion Criteria:
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Patients who were previously enrolled in the [PG2 Treatment for Reduction of Chemotherapy-Induced Toxicity and Encouraging Compliance with Chemotherapy Among Stage II/III Breast Cancer Patients Receiving Adjuvant Chemotherapy/NCT03314805] study.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Chang Gung Memorial Hospital, Kaohsiung Branch | Kaohsiung City | Taiwan | ||||
| E-Da Cancer Hospital |
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| ID | Term |
|---|---|
| D001943 | Breast Neoplasms |
| ID | Term |
|---|---|
| D009371 | Neoplasms by Site |
| D009369 | Neoplasms |
| D001941 | Breast Diseases |
| D012871 | Skin Diseases |
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| Placebo | Drug | Adjuvant chemotherapy in combination with Placebo |
|
Time from random assignment until death from any cause. |
| from random assignment to Aug 27, 2025 |
| Kaohsiung City |
| Taiwan |
| Chang Gung Memorial Hospital, Lovers Lake branch | Keelung | Taiwan |
| Chang Gung Memorial Hospital, Taipei Branch | Taipei | Taiwan |
| Chang Gung Memorial Hospital, Linkou Branch | Taoyuan City | Taiwan |
| D017437 |
| Skin and Connective Tissue Diseases |