Conditions: Postmenopausal Women Locally Advanced Metastatic Breast Cancer Metastatic Breast Cancer
Keywords: RAD001 (Everolimus) Letrozole Breast cancer Metastatic Breast cancer Estrogen receptor positive Failure of Tamoxifen Anastrozole or Examestane
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 72
Healthy volunteers: no

Brief summary:
This was a multi-center, Israeli phase II open label study evaluating treatment with RAD001 (10 mg daily) combined with letrozole (2.5 mg daily) in postmenopausal women after recurrence or progression on Tamoxifen, Anastrozole or Examestane.

There were no treatments specifically approved after recurrence or progression on AIs. Available options, based on common clinical practice and several treatment guidelines (e.g. NCCN treatment guidelines 2008), included fulvestrant.

Combining RAD001 with letrazole was a rational approach to the treatment of advanced Brest Cancer, offering the potential for inhibition of tumor cell growth\\ proliferation and anti angiogenesis while at the same time potentially preventing the development of letrazole resistance.

Detailed description:
Screening Period:

Postmenopausal women with estrogen receptor positive, locally advanced or metastatic breast cancer whose disease was refractory to hormonal therapy and had a documented recurrence or progression on last therapy for their breast cancer with either tamoxifen, anastrozole, letrozole, fulvestrant or exemestan were screened for eligibility within 28 days prior to treatment Day 1.

Treatment Period:

Patients started receiving everolimus (10 mg daily oral dose) combined with letrozole (2.5 mg daily oral dose) tablets from treatment Day 1. Study treatment continued until disease progression, intolerable toxicity or consent withdrawal. Dose adjustment (reduction, interruption or possible dose re-escalation to starting dose) could be done based on the safety findings. Tumor assessments were performed every 12 weeks until disease progression. In order to confirm response at least four weeks after first observation, additional scans to determine a complete response (CR) or partial response (PR) or stable disease (SD) were performed. Patients were followed for safety until 28 days after study treatment discontinuation.

Post Treatment Follow up for Survival:

Patients were followed for survival every 3 months for up to 3 years. Survival information could be obtained via phone and information was documented in the source documents.

Arms:
arm 1: All patients received 2 tablets (5 mg each) of Everolimus (a total of 10 mg) + 1 tablet of Letrozole (2.5 mg) daily until disease progression or as described in the protocol.

Interventions: intervention 1: Everolimus intervention 2: Letrozole
Intervention descriptions: intervention 1: Everolimus 10 mg (2 tablets of 5 mg) once daily intervention 2: Letrozole 2.5 mg once daily

Protocol document: