A Clinical Study of Darcilil Combined With AI Combined With Pyrrotinib in the Treatment of TPBC

"Darcilie: 125mg orally once a day, taken for 21 days and stopped for 7 days, 28 days as a cycle.~AI: Letrozole: 2.5mg orally once daily, or anastrozole 1mg orally once daily, or exemestane 25mg orally once daily.~Pyrrotinib: Initial dose of 240mg in the first week, if diarrhea and other side effects can be tolerated, 320 mg can be added in the second week, once a day, oral administration within 30 minutes after breakfast, 21 days for 1 cycle~All investigational drugs should be used for disease progression or when patients have an intolerable adverse reaction or are withdrawn from the study for other reasons.~Oral pyrrotinib is recommended along with prophylactic antidiarrheal medication. Antidiarrheal regimen 1: Oral imodium (2 tablets/times, 2 times a day) from the first week, 1 tablet, 2 times a day from the second week. Antidiarrheal regimen 2: montmorillonite powder (3 times a day, 1 pack/time)+ whole intestine sheng (3 pills/time 2 times a day)."