abemaciclib based treatmentcyclin inhibitorpalbociclib based treatmentribociclib based treatment
abemaciclib plus aromatase inhibitor abemaciclib plus endocrine therapy abemaciclib plus fulvestrant dalpiciclib plus fulvestrant palbociclib plus endocrine therapy palbociclib plus fulvestrant palbociclib plus letrozole ribociclib plus endocrine therapy ribociclib plus fulvestrant ribociclib plus letrozole
es-BC - HR positive - (neo)adjuvant (NA) 2
es-BC - HR-positive - 1st line (L1) 1
la/mBC - HR positive 2   
la/mBC - HR positive - (neo)adjuvant (NA) 3
la/mBC - HR positive - NA - PIK3CA mutant
la/mBC - HR-positive - 1st line (L1) 13            
la/mBC - HR positive - L1 - PIK3CA mutant 1
la/mBC - HR-positive - 2nd line (L2) 20            
la/mBC - HR positive - L2 - all population 1
la/mBC - HR positive - L2 - PIK3CA mutant 1
Comparator:  vs capecitabine;   vs aromatase inhibitor;   vs endocrine therapy;   vs letrozole;   vs fulvestrant; 
Risk of bias:  low;   some concerns;   high;  NA;