A Phase IV Study to Collect Data on the Efficacy and Safety of RIBociclib in Older Women With Breastcancer (RibOB)

  • STATUS
    Recruiting
  • End date
    Dec 8, 2022
  • participants needed
    150
  • sponsor
    Universitaire Ziekenhuizen Leuven
Updated on 8 June 2022
estrogen
progesterone
advanced breast cancer
HER2
progesterone receptor
erbb2
cish
letrozole
her2/neu-negative breast cancer
chromogenic in situ hybridization

Summary

The RibOB study is a prospective, open lable, single arm trial which will evaluate the clinical efficacy, overall safety and tolerability of ribociclib in combination with letrozole in older women (≥70 years) with HR+/HER2- aBC and no prior hormonal treatment for advanced disease (as per approved indication).

Description

The RibOB study is an observational prospective, open lable single arm phase IV trial which will evaluate the clinical efficacy, overall safety and tolerability of ribociclib in combination with letrozole in older women (≥70 years) with HR+, HER2- advanced breast cancer and no prior hormonal treatment for advanced disease as per the indication approved by the European Medicines Authority (EMA) and as made available by Belgian national authorities in the national health care system. A total of maximum 150 patients will be enrolled for treatment with Letrozole (2.5 mg once daily) + ribociclib 600 mg (day 1 to 21 in a 28 day cycle), which will continue until disease progression, intolerable toxicity or patient/physician decision to withdraw. During the study, patients will be continuously evaluated for disease progression as per national standard of care (approximately every 12 weeks radiologically); for safety; and for quality of life and geriatric assessment components including functional status with QoL assessment and CGA at 3 months (+/- 2 weeks) and at 1 year (+/-2 weeks).

Details
Condition Breast Cancer
Treatment Ribociclib
Clinical Study IdentifierNCT03956654
SponsorUniversitaire Ziekenhuizen Leuven
Last Modified on8 June 2022

Eligibility

Yes No Not Sure

Inclusion Criteria

Patient is a female ≥ 70 years old at the time of informed consent
Advanced breast cancer (defined as locoregionally recurrent or metastatic not amenable to curative therapy)
Histologically and/or cytologically confirmed diagnosis of estrogen-receptor positive and/or progesterone receptor positive breast cancer by local laboratory (defined as ER and/or PgR ≥1% or Allred >2)
HER2-negative breast cancer defined as a negative in situ hybridization test or an IHC status of 0, 1+ or 2+. If IHC is 2+, a negative in situ hybridization (FISH, CISH, or SISH) test as determined by local laboratory testing according to ASCO-CAP guidelines is necessary
Patient has adequate bone marrow and organ function as defined by the following laboratory values (as assessed by local laboratory), preferably tested a maximum of 14 days before enrolment
Patient has signed informed consent obtained before any trial-related activities and according to local guidelines
Subjects must be able to communicate with the investigator and comply with the requirements of the study procedures

Exclusion Criteria

Patient has a known hypersensitivity to any of the excipients of ribociclib or letrozole
Patients who received any CDK4/6 inhibitor previously
Patient who received any prior systemic antihormonal therapy or chemotherapy for advanced breast cancer
Patient is concurrently using other systemic anti-cancer therapy (except bone modifying agents)
Patient with central nervous system (CNS) metastases and/or documented meningeal carcinomatosis unless they meet ALL the following criteria
At least 4 weeks from prior therapy for CNS disease completion (including radiation and/or surgery) to starting the study treatment
Clinically stable CNS lesions at the time of study treatment initiation and not receiving steroids and/or enzyme-inducing anti-epileptic medications for the management of brain metastases for at least 2 weeks (radiological confirmation of brain disease status is not necessary)
Patient has any other concurrent severe and/or uncontrolled medical condition that would, in the investigator's judgment, cause unacceptable safety risks, contraindicate patient participation in the clinical study or compromise compliance with the protocol: (e.g. chronic pancreatitis, chronic active hepatitis, active untreated or uncontrolled fungal, bacterial or viral infections, etc.)
Patients who already have or who are at significant risk of developing QTc prolongation are not eligible for the study. This includes patients
with long QT syndrome
with uncontrolled or significant cardiac disease, including recent myocardial infarction, congestive heart failure, unstable angina and bradyarrhythmias
with electrolyte abnormalities (potassium, magnesium, sodium and calcium) that are NCI CTCAE 4.03 grade 2 or higher (for details, see table 10 ). Note: phosphate testing is not mandatory, but should the investigator consider measuring it before enrolment, the same rules may be applied
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