Abstract CT044: MONARCH 1: Final overall survival analysis of a phase 2 study of abemaciclib, a CDK4 and CDK6 inhibitor, as monotherapy, in patients with HR+/HER2- breast cancer, after chemotherapy for advanced disease

Treatment Patterns and Health Resource Utilization in Patients With HR+/ HER2- Locally Advanced or Metastatic Breast Cancer in Real-World Setting in Taiwan

OBJECTIVES

This study aimed to understand current treatment patterns and healthcare resource utilization (HRU) of women with locally advanced or metastatic breast cancer (advanced breast cancer [ABC]) in Taiwan overall and within the subgroup of patients who were postmenopausal women with no previous systemic therapy in the ABC setting.

METHODS

A chart review of anonymized data on patient characteristics, treatment patterns, and HRU was conducted via an online physician survey including 118 patient charts from women ≥ 18 years old with hormone receptor positive/human epidermal growth receptor negative ABC, diagnosed between 2015 and 2017.

RESULTS

The mean age of all patients was 56.6 years (range 29-83). Among the 118 patients, the most common first-line systemic therapy group after diagnosis of ABC was endocrine-based therapy (39.0%) or endocrine therapy (ET) plus chemotherapy (ChT) combinations (38.1%). In the postmenopausal subgroup (n = 56), ET-based therapy was the most common (44.6%). Oncologist visits, at annual rate of 9.20 (95% confidence interval 8.81-9.60), and hospitalizations, at annual rate of 1.08 (95% confidence interval 0.96-1.22), were key drivers of HRU. Of the 118 patients, the 72 with at least one ChT agent in their first-line regimen had an annual hospitalization rate of 1.4 versus 0.45 admissions compared with the 46 patients on first-line ET-based therapy.

CONCLUSIONS

Current treatment patterns suggest an unmet need for new medications that lead to reduction in high rate of ChT use. Results can inform future evaluations of new ABC treatments that estimate the health economic impact of their adoption in Taiwan.

Real world evidence study on treatment patterns and health resource utilization in patients with HR+/HER2- locally advanced or metastatic breast cancer in Korea

Objective

To understand current treatment patterns and health care resource utilization (HRU) of women with locally advanced or metastatic breast cancer (advanced breast cancer; ABC) in Korea overall and within patients who had progressed with prior endocrine therapy (as first-line treatment for metastatic disease) and patients with no prior systemic treatment (for advanced disease).

Methods

A chart review was conducted in 109 patients (women ≥ 18 years old with HR+/HER2- ABC diagnosed between 2015 and 2017) from 11 hospitals. Anonymized data on patient characteristics, treatment patterns and HRU was abstracted.

Results

Mean (range) age of all patients was 57.5 (40–81) years. Overall, the most common first-, second- and third-line systemic therapy after diagnosis of ABC were letrozole ± palbociclib (51%), endocrine therapy (ET)±everolimus (42%) or chemotherapy (ChT) (39%), and ChT (68%), respectively. In patients progressed with ET (n = 33) and those with no prior systemic treatment (n = 52), the most common first-line treatments were letrozole (82%) and letrozole + palbociclib (42%), respectively. The percentage of patients with at least one grade 3 or higher adverse event during first-line therapy was 93.1% vs 39.2% in patients on a ChT based regimen (N = 29) vs. ET (N = 74). Overall, oncologist visits, at an annual rate of 9.27 (95% CI: 8.87, 9.69) visits per month, and hospitalizations, with an annual rate of 0.44 (95% CI: 0.36, 0.54), and mean (SD) length of stay of 14.3 (10.32) days, were the key drivers of HRU.

Conclusions

These findings on real world HRU reflected clinical guidelines and severity of ABC. Results can inform future evaluations of new ABC treatments that estimate the health economic impact of their adoption in Korea.