Conditions: HER2-positive Breast Cancer
Allocation: NON_RANDOMIZED | Intervention model: PARALLEL
Enrollment: 8
Healthy volunteers: no

Brief summary:
This study is to see how safe the use of short-term fasting is in breast cancer patients who will receive chemotherapy before undergoing surgery and to examine if the use of short-term fasting will decrease the side effects of chemotherapy and how much a tumor shrinks while receiving chemotherapy.

Detailed description:
Patients will fast 24 hours before and 24 hours after the administration of chemotherapy which will consist of doxorubicin plus cyclophosphamide every 2 weeks for four cycles followed by paclitaxel every 2 weeks for four cycles (dose-dense AC + T) or docetaxel (T) every 3 weeks for four cycles. Trastuzumab (H) and Pertuzumab (P) will be given concurrently with docetaxel for a total of 4 cycles before surgery. For patients who do not achieve pathological complete remission (pCR), adjuvant chemotherapy with doxorubicin (A) plus cyclophosphamide (C) every 3 weeks for four cycles will be given, followed by trastuzumab every 3 weeks to complete 1 year of treatment. For patients with pCR, only trastuzumab every 3 weeks will be given adjuvantly to complete 1 year of treatment (TPH + AC).

Arms:
arm 1: Doxorubicin and cyclophosphamide every two weeks for four cycles (one cycle is defined as 14 days). After completing fourth cycle, paclitaxel every two weeks for an additional four cycles. The appropriate surgery will be done three to six weeks after completing the last cycle of paclitaxel. arm 2: Docetaxel, trastuzumab, and pertuzumab every three weeks for four cycles. Pegfilgrastim after docetaxel. Surgery three to six weeks after completing the last docatexel. If additional chemotherapy is needed patients will receive both doxorubicin and cyclophosphamide every three weeks for four cycles and after the fourth cycle then trastuzumab for one year

Interventions: intervention 1: Doxorubicin intervention 2: cyclophosphamide intervention 3: paclitaxel intervention 4: docetaxel intervention 5: Trastuzumab intervention 6: Pertuzumab
Intervention descriptions: intervention 1: doxorubicin (A) 60 mg/m2 plus cyclophosphamide (C) 600 mg/m2 every 2 weeks for four cycles followed by paclitaxel (T) 75 mg/m2 every 2 weeks for four cycles (dose-dense AC + T).20 intervention 2: doxorubicin (A) 60 mg/m2 plus cyclophosphamide (C) 600 mg/m2 every 2 weeks for four cycles followed by paclitaxel (T) 75 mg/m2 every 2 weeks for four cycles (dose-dense AC + T).20 intervention 3: For patients with HER2 negative breast cancer: doxorubicin (A) 60 mg/m2 plus cyclophosphamide (C) 600 mg/m2 every 2 weeks for four cycles followed by paclitaxel (T) 75 mg/m2 every 2 weeks for four cycles (dose-dense AC + T).20 intervention 4: For patients with HER2 positive breast cancer: docetaxel (T) 75 mg/m2 every 3 weeks for four cycles. Trastuzumab (H, 8mg/kg for 1st cycle, then 6 mg/kg in subsequent 3 cycles), Pertuzumab (P, 840 mg for 1st cycle, then 420 mg in subsequent 3 cycles) will be given concurrently with docetaxel for a total of 4 cycles before surgery. For patients who do not achieve pCR, adjuvant chemotherapy with doxorubicin (A) 60 mg/m2 plus cyclophosphamide (C) 600 mg/m2 every 3 weeks for four cycles will be given, followed by trastuzumab 6 mg/kg every 3 weeks to complete 1 year of treatment. For patients with pCR, only trastuzumab 6 mg/kg every 3 weeks will be given adjuvantly to complete 1 year of treatment (TPH + AC).21 intervention 5: docetaxel (T) 75 mg/m2 every 3 weeks for four cycles. Trastuzumab (H, 8mg/kg for 1st cycle, then 6 mg/kg in subsequent 3 cycles), Pertuzumab (P, 840 mg for 1st cycle, then 420 mg in subsequent 3 cycles) will be given concurrently with docetaxel for a total of 4 cycles before surgery. For patients who do not achieve pCR, adjuvant chemotherapy with doxorubicin (A) 60 mg/m2 plus cyclophosphamide (C) 600 mg/m2 every 3 weeks for four cycles will be given, followed by trastuzumab 6 mg/kg every 3 weeks to complete 1 year of treatment. For patients with pCR, only trastuzumab 6 mg/kg every 3 weeks will be given adjuvantly to complete 1 year of treatment (TPH + AC).21 intervention 6: docetaxel (T) 75 mg/m2 every 3 weeks for four cycles. Trastuzumab (H, 8mg/kg for 1st cycle, then 6 mg/kg in subsequent 3 cycles), Pertuzumab (P, 840 mg for 1st cycle, then 420 mg in subsequent 3 cycles) will be given concurrently with docetaxel for a total of 4 cycles before surgery. For patients who do not achieve pCR, adjuvant chemotherapy with doxorubicin (A) 60 mg/m2 plus cyclophosphamide (C) 600 mg/m2 every 3 weeks for four cycles will be given, followed by trastuzumab 6 mg/kg every 3 weeks to complete 1 year of treatment. For patients with pCR, only trastuzumab 6 mg/kg every 3 weeks will be given adjuvantly to complete 1 year of treatment (TPH + AC).21

Protocol document: