Overview

Efficacy and Safety of Ribociclib in Pre- and Postmenopausal Chinese Women With HR Positive, HER2-negative, Advanced Breast Cancer.

Status:
Active, not recruiting
Trial end date:
2023-12-13
Target enrollment:
0
Participant gender:
Female
Summary
This is a Phase II randomized, double-blind, placebo-controlled study involving premenopausal and postmenopausal Chinese women plus an open-label single arm of pharmacokinetic cohort of LEE011 in combination with Letrozole in Chinese postmenopausal women with HR+, HER2- negative advanced breast cancer. Three cohorts of patients will be enrolled: PK cohort, premenopausal cohort, and postmenopausal cohort.
Phase:
Phase 2
Accepts Healthy Volunteers?
No
Details
Lead Sponsor:
Novartis Pharmaceuticals
Treatments:
Anastrozole
Goserelin
Letrozole
Criteria
Inclusion Criteria:

- Patient has a histologically and/or cytologically confirmed diagnosis of estrogen
receptor (ER) positive and/or progesterone receptor positive breast cancer by local
laboratory (based on most recently analyzed biopsy).

- Patient has HER2-negative breast cancer (based on most recently analyzed biopsy)
defined as a negative in situ hybridization test or an Immunohistochemistry (IHC)
status of 0, 1+ or 2+. If IHC is 2+, a negative in situ hybridization (FISH, CISH, or
SISH) test is required by local laboratory testing.

- Patient must have either:

- Measurable disease, i.e., at least 1 measurable lesion as per Response Evaluation
Criteria in Solid Tumors (RECIST) 1.1 criteria (a lesion at a previously
irradiated site may only be counted as a target lesion if there is a clear sign
of progression since the irradiation). OR

- If no measurable disease is present, then at least 1 predominantly lytic bone
lesion must be present (patients with no measurable disease and only 1
predominantly lytic bone lesion that has been previously irradiated are eligible
if there is documented evidence of disease progression of the bone lesion after
irradiation).

- Patient has ECOG performance status 0 or 1.

For premenopausal cohort:

- Patient is an adult, female ≥ 18 years old and < 60 years old at the time of informed
consent and has signed informed consent before any trial related activities are
conducted and according to local guidelines.

- Confirmed negative serum pregnancy test before starting study treatment or patient has
had a hysterectomy.

- Patient has advanced (loco regionally recurrent not amenable to curative therapy or
metastatic) breast cancer not amenable to curative therapy (e.g.

surgery and/or radiotherapy).

- Patients who received ≤ 14 days of a NSAI (letrozole or anastrozole) with or without
goserelin or goserelin ≤ 28 days for advanced breast cancer prior to randomization are
eligible. Patients must continue treatment with the same hormonal agent + goserelin
during the study. No treatment interruption is required for these patients prior to
randomization.

- Patients who have received up to 1 line of chemotherapy for advanced breast cancer and
have been discontinued 28 days before randomization are eligible.

For postmenopausal cohort:

- Patient is an adult, female ≥ 18 years old at the time of informed consent and has
signed informed consent before any trial related activities and according to local
guidelines.

- Women with advanced (locoregionally recurrent or metastatic) breast cancer not
amenable to curative therapy.

Exclusion Criteria:

- Patient who has received a prior CDK4/6 inhibitor.

- Patient with symptomatic visceral disease or any disease burden that makes the patient
ineligible for endocrine therapy per the investigator's best judgment

- Patient with CNS metastases.

- Patient who has not had resolution of clinical and laboratory acute toxicities related
to prior anti-cancer therapy to National Cancer Institute (NCI) Common Terminology
Criteria for Adverse Events (CTCAE) version 4.03 Grade ≤1.

- Patient has a known history of Human immunodeficiency Virus (HIV) infection (testing
not mandatory).

- Clinically significant, uncontrolled heart disease and/or cardiac repolarization
abnormality

- Patient is currently receiving any of the substances as defined in the protocol that
cannot be discontinued 7 days prior to the start of the treatment:

For premenopausal cohort:

- Pregnant or nursing (lactating) women.

- Women of child-bearing potential, defined as all women physiologically capable of
becoming pregnant, unless they are using highly effective methods of contraception
during dosing of study treatment and for 21 days after stopping study medication.

Note: Use of oral (estrogen and progesterone), transdermal, injected or implanted hormonal
methods of contraception as well as hormonal replacement therapy is not allowed in this
study.

For postmenopausal cohort:

- Patient who received any prior systemic anti-cancer therapy (including hormonal therapy
and chemotherapy) for advanced breast cancer.

Note: Patients who received neo (adjuvant) therapy for breast cancer are eligible. If the
prior neo (adjuvant) therapy included letrozole or anastrozole, the disease free interval
must be greater than 12 months from the completion of treatment until randomization.

- Patients who received ≤ 14 days of letrozole or anastrozole for advanced disease prior to
randomization are eligible.

Other protocol-defined inclusion/exclusion may apply.