Utilisation Patterns and Treatment Outcomes of EGFR-Tyrosine Kinase Inhibitors in EGFR-mutant Advanced Lung Carcinoma in the Pakistani-Asian Population: A Real-world Data Study

  • Kiran Munawar Department of Solid Tumour Oncology, St. Bartholomew’s Hospital, Barts Health NHS Trust, London
  • Romena Qazi Department of Pathology, Shaukat Khanum Memorial Cancer Hospital & Research Centre, Lahore
  • Hassan Shahryar Sheikh Sheikh Shakbout Medical City, Department of Medicine, Abu Dhabi
Keywords: Cancer, EGFR mutation, EGFR TKI, Lung cancer, Pakistan

Abstract

Introduction: Data on the utilisation of epidermal growth factor receptor (EGFR) tyrosine-kinase inhibitors (TKIs) and their clinical outcomes in a heterogeneous Pakistani-Asian population have not been previously reported. This manuscript presents the first account of the clinical outcomes of EFGR-TKIs in EGFR-mutant lung adenocarcinoma among Pakistani- Asians. Materials and Methods: A real-world data study was conducted on all advanced lung cancer patients harbouring EGFR-mutations from the cancer registry of Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Pakistan. We identified three different patterns of the use of EGFR-TKIs (Groups 1, 2 and 3) that reflect the ground realities of cancer care and delivery in Pakistan. We also noted a significant proportion of patients (Group 4) without access to EGFR TKIs. We compared the objective response rates (ORR), progression-free survival (PFS) and overall survival (OS) of each of the four groups and reported their toxicity profile. Results: Within the limitations of a retrospective analysis, we saw differences in the frequency of EGFR mutations in this population. However, response rates and long-term outcomes of EGFR TKI therapy were comparable with the existing data. The overall use of EGFR TKIs led to a superior outcome in ORR, PFS and OS compared to chemotherapy alone; (77.8% vs. 50.0%, 16.3 vs. 10.7 months; P = 0.099; 85.6 vs. 25.9 months, respectively; P = 0.13). Conclusion: Except for modest differences, EGFR-mutant advanced lung adenocarcinoma outcomes among Pakistani-Asians are comparable to those of other populations.

Published
2022-11-10
How to Cite
1.
Munawar K, Qazi R, Sheikh HS. Utilisation Patterns and Treatment Outcomes of EGFR-Tyrosine Kinase Inhibitors in EGFR-mutant Advanced Lung Carcinoma in the Pakistani-Asian Population: A Real-world Data Study. J Cancer Allied Spec [Internet]. 2022Nov.10 [cited 2023Feb.3];9(1). Available from: https://journals.sfu.ca/jcas/index.php/jcas/article/view/491
Section
Original Research Article