Tolerability of palbociclib in younger and older patients with advanced breast cancer.
J Oncol Pharm Pract
; 29(1): 96-104, 2023 Jan.
Article
em En
| MEDLINE
| ID: mdl-34751060
ABSTRACT
INTRODUCTION:
Palbociclib is a small-molecule cyclin-dependent kinase 4/6 inhibitor used to treat hormone receptor-positive, human epidermal growth factor receptor-2 negative advanced breast cancer. Patient-specific factors impacting dose reductions or discontinuations are unknown.METHODS:
The primary objective was to evaluate the association of age (<60 vs. ≥60 years) with palbociclib dose reductions or discontinuations secondary to neutropenia. This single-center, retrospective chart review included hormone receptor-positive, human epidermal growth factor receptor-2 negative advanced breast cancer patients ≥18 years treated with palbociclib between April 2015 and May 2020. Patients <60 years at the time of palbociclib initiation were in the younger group and patients ≥60 years were in the older group.RESULTS:
Among the 107 patients included, younger patients were less likely than older patients to have a palbociclib starting dose <125â mg (0% vs. 11.9%, p = 0.02). Differences in palbociclib dose reductions or treatment discontinuations secondary to neutropenia were not detected (35.4% vs. 42.4%, p = 0.55). Neither the total number of palbociclib dose reductions (none 54.2% vs. 49.1%, one 33.3% vs. 42.4%, two 12.5% vs. 8.5%, p = 0.61), nor the final dose of palbociclib (125 mg 54.2% vs. 40.7%, 100 mg 29.2% vs. 27.1%, 75 mg 16.7% vs. 32.2%, p = 0.17) differed between younger and older patients.CONCLUSIONS:
Age (<60 vs. ≥60 years) was not associated with the rate of palbociclib dose reductions or discontinuations secondary to neutropenia. Older (≥60 years) patients were more likely to start palbociclib at lower doses which may impact neutropenia and non-neutropenic intolerance.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias da Mama
/
Neutropenia
Limite:
Female
/
Humans
Idioma:
En
Revista:
J Oncol Pharm Pract
Assunto da revista:
FARMACIA
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Estados Unidos