Study study type PathologyT1T0Patientssample sizesROB Results

la/mBC - HR-positive - 1st line (L1) breast cancer - HR positive la/mBC - HR positive la/mBC - HR-positive - 1st line (L1)

versus endocrine therapy
palbociclib plus endocrine therapy
PENELOPE-B, 2021
  NCT01864746
RCTla/mBC - HR-positive - 1st line (L1)palbociclib plus endocrine therapy according to local standars (physician's choice)placebo plus endocrine therapy according to local standars (physician's choice)Women with residual invasive disease after NACT (NACT during at least 16 weeks) in the breats or in lymph nodes, ER and/or PR positive and HER2 negative tumor.628 / 616low
inconclusive
  • inconclusive 7 % decrease in iDFS (PE)
versus letrozole
palbociclib plus letrozole
PALOMA-1, 2016
  NCT00721409
RCTla/mBC - HR-positive - 1st line (L1)palbociclib plus letrozoleletrozolePostmenopausal women with ER-positive and HER2-negative advanced breast cancer. Enrolled in 2 separate cohorts (cohort 1: ER-positive and HER2-negative / cohort 2: they were also required to have cancers with amplification of cyclin D1 (CCND1), loss of p16 (also known as INK4A or CDKN2A), or both)84 / 81high
suggested
  • suggested 51 % decrease in progression or deaths (PFS) (PE)
PALOMA-2, 2016
  NCT01740427
RCTla/mBC - HR-positive - 1st line (L1)palbociclib plus letrozoleplacebo plus letrozolePostmenopausal women with ER-positive, HER2-negative advanced breast cancer were eligible for enrollment if they had not received prior systemic therapy for advanced disease.444 / 222NA
conclusif
  • demonstrated 42 % decrease in progression or deaths (PFS) (PE)
  • suggested 44 % decrease in PFS (extension)