IBRANCE是一种口服细胞周期素依赖性激酶4和6抑制剂，其与来曲唑联合使用可作为内分泌治疗基础的初始方案用于治疗ER+/HER2-绝经后晚期乳腺癌
Generic Name and Formulations:
Palbociclib 75mg, 100mg, 125mg; capsules.

Company:
Pfizer Inc.
Indications for IBRANCE:
In combination with letrozole, for the treatment of postmenopausal women with estrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced breast cancer as initial endocrine-based therapy for metastatic disease.

Adult:
Swallow whole. Take with food. 125mg once daily for 21 days followed by 7 days off to complete a 28-day cycle, in combination with letrozole 2.5mg once daily continuously throughout the 28-day cycle. Dose modification for adverse reactions: First reduction: 100mg/day; Second dose reduction: 75mg/day; discontinue if <75mg/day required. Dose modification for hematologic or non-hematologic toxicities: see full labeling. Concomitant strong CYP3A inhibitors: avoid and consider alternative drug; if use necessary, reduce palbociclib dose to 75mg.

Children:
Not eva luated.

Pharmacological Class:
Kinase inhibitor.

Warnings/Precautions:
Monitor CBC prior to initiation and at start of each cycle, as well as Day 14 of first 2 cycles, and as clinically indicated. Interrupt, reduce dose, or delay starting treatment cycles if Grade 3 or 4 neutropenia develops. Monitor for signs/symptoms of infection and pulmonary embolism; treat appropriately if develop. Moderate or severe hepatic impairment. Severe renal impairment. Pregnancy: avoid. Use effective contraception during therapy and for at least 2 weeks after last dose. Lactation: discontinue nursing.

Interactions:
Avoid concomitant strong CYP3A inhibitors (eg, clarithromycin, indinavir, itraconazole, ketoconazole, lopinavir/ritonavir, nefazodone, nelfinavir, posaconazole, ritonavir, saquinavir, telaprevir, telithromycin, verapamil, voriconazole), grapefruit or grapefruit juice; if unavoidable, reduce dose (see Adults). Avoid concomitant strong CYP3A inducers (eg, phenytoin, rifampin, carbamazepine, St. John’s wort) or moderate CYP3A inducers (eg, bosentan, efavirenz, etravirine, modafinil, nafcillin). May potentiate midazolam or other CYP3A substrates with narrow therapeutic index (eg, alfentanil, cyclosporine, dihydroergotamine, ergotamine, everolimus, fentanyl, pimozide, quinidine, sirolimus, tacrolimus); reduce dose of these drugs.

Adverse Reactions:
Neutropenia, leukopenia, fatigue, anemia, upper respiratory infection, nausea, stomatitis, alopecia, diarrhea, thrombocytopenia, decreased appetite, vomiting, asthenia, peripheral neuropathy, epistaxis.

How Supplied:
Caps—21