Study study type PathologyT1T0Patientssample sizesROB Results deaths (OS) Eprogression or deaths (PFS) ERFS/DFS E

la/mBC - HR positive breast cancer - HR positive la/mBC - HR positive

versus fulvestrant
buparlisib plus fulvestrant
BELLE-2 (patients with known PI3K status), 2017
  NCT01610284
RCTla/mBC - HR positivebuparlisib plus fulvestrantplacebo plus fulvestrantPostmenopausal women (>=18yr), with histollogically confirmed HR-positive and HER2-negative inoperable locally advanced or metastatic breast cancer (with progession on or after aromatase ihnibitor treatment). This subgroup population included ptients with a PI3K status known (activated or not)427 / 424low
conclusif -9% demonstrated-20%

la/mBC - HR positive - (neo)adjuvant (NA) breast cancer - HR positive la/mBC - HR positive la/mBC - HR positive - (neo)adjuvant (NA)

versus letrozole
alpelisib plus letrozole
NEO-ORB (wild type cohort), 2019
  NCT01923168
RCTla/mBC - HR positive - (neo)adjuvant (NA)alpelisib plus letrozoleletrozolePostmenopausal women with locally confirmed, HR , HER2−, T1c-T3 operable breast cancer with known PIK3CA mutation status, who had not previously received treatment with local or systemic therapy and were considered eligible for neoadjuvant endocrine therapy were included in this study.131 / 126NA
inconclusive
NEO-ORB (mutant cohort), 2019
  NCT01923168
RCTla/mBC - HR positive - (neo)adjuvant (NA)alpelisib plus letrozoleletrozolePostmenopausal women with locally confirmed, HR , HER2−, T1c-T3 operable breast cancer with known PIK3CA mutation status, who had not previously received treatment with local or systemic therapy and were considered eligible for neoadjuvant endocrine therapy were included in this study.-/-NA
inconclusive

la/mBC - HR-positive - 2nd line (L2) breast cancer - HR positive la/mBC - HR positive la/mBC - HR-positive - 2nd line (L2)

versus fulvestrant
alpelisib plus fulvestrant
SOLAR-1 (patients with PIK3CA mutant status), 2019
  NCT02437318
RCTla/mBC - HR-positive - 2nd line (L2)alpelisib plus fulvestrantplacebo plus fulvestrantPatients were men and postmenauposal women with locally advanced confirmed HR positive, HER2 negative breast cancer169 / 172low
conclusif -14% demonstrated-35%
SOLAR-1 (patients without PIK3CA mutant status), 2019
  NCT02437318
RCTla/mBC - HR-positive - 2nd line (L2)alpelisib plus fulvestrantplacebo plus fulvestrantPatients were men and postmenauposal women with locally advanced confirmed HR positive, HER2 negative breast cancer / Patient has recurrence or progression of disease during or after AI therapy115 / 116low
inconclusive -15%
buparlisib plus fulvestrant
BELLE-3, 2018
  NCT01633060
RCTla/mBC - HR-positive - 2nd line (L2)buparlisib plus fulvestrantplacebo plus fulvestrantPostmenopausal women (aged >= 18yr) with HR-positive, HER2-negative, locally advanced or metastatic breast cancer pretreated with aromatase inhibitors and resistant to endocrine therapy for advanced BC.289 / 143NA
conclusif demonstrated-33%

la/mBC - HR positive - L2 - all population breast cancer - HR positive la/mBC - HR positive la/mBC - HR-positive - 2nd line (L2) la/mBC - HR positive - L2 - all population

versus fulvestrant
buparlisib plus fulvestrant
BELLE-2 (full population), 2017
  NCT01610284
RCTla/mBC - HR positive - L2 - all populationbuparlisib plus fulvestrantplacebo plus fulvestrantPostmenopausal women (>=18yr), with histollogically confirmed HR-positive and HER2-negative inoperable locally advanced or metastatic breast cancer (with progession on or after aromatase ihnibitor treatment)576 / 571low
conclusif -13% demonstrated-22%

la/mBC - HR positive - L2 - PIK3CA mutant breast cancer - HR positive la/mBC - HR positive la/mBC - HR-positive - 2nd line (L2) la/mBC - HR positive - L2 - PIK3CA mutant

versus fulvestrant
buparlisib plus fulvestrant
BELLE-2 (PI3K pathway activated), 2017
  NCT01610284
RCTla/mBC - HR positive - L2 - PIK3CA mutantbuparlisib plus fulvestrantplacebo plus fulvestrantPostmenopausal women (>=18yr), with histollogically confirmed HR-positive and HER2-negative inoperable locally advanced or metastatic breast cancer (with progession on or after aromatase ihnibitor treatment). This subgroup population included only patients with PI3K pathway activated188 / 184low
suggested -24%