Treatment Patterns, Outcomes and Testing in EGFRm NSCLC Patients With EGFR TKI 1L Across Europe (REFLECT)

Patients' demographics, including: sex (male/female), and age at EGFR TKI initiation.

Baseline disease characteristics, including:

Smoking status at initial NSCLC diagnosis, Tumor histology and disease stage at initial NSCLC diagnosis, Eastern Cooperative Oncology Group (ECOG) performance status at initial NSCLC diagnosis and at EGFR TKI initiation, Treatment history: for patients initially diagnosed at earlier-stage disease, cancer-directed and palliative therapies received before first diagnosis of or progression to advanced/metastatic EGFR-mutated NSCLC.

Molecular testing patterns, including: type of sample/test used to assess the EGFR mutation, for example: primary/secondary tumor, tissue/cytology or blood sample; Molecular testing results: EGFR mutation type (exon 19 deletion, L858R mutation, other).

Incidence and time to development of BM from first diagnosis of locally advanced or metastatic NSCLC, including:

Proportion of patients with BM since diagnostic of metastatic disease and proportion of patients with BM developed during treatment, Type of test used to confirm BM diagnosis (e.g., tissue biopsy, imaging, spinal tap, neurologic exam), Proportion of patients who have BM at start of first-line EGFR TKI therapy. Proportion of patients with no development of BM, Patients' demographic and clinical characteristics associated with development of BM, Incidence of BM and time to development of BM from start of first-line EGFR TKI therapy, Proportion of patients prescribed treatments for BM and type of therapy Overall survival (in months) measured from first diagnosis of BM to the date of death from any cause, with patients last known to be alive censored at the date of last available follow-up.

Incidence and time to development of LM disease from first diagnosis of locally advanced or metastatic NSCLC, including:

Proportion of patients with LM at first diagnosis of metastatic disease, Type of test to confirm LM diagnosis (cerebrospinal fluid cytology, tissue, imaging, etc.), Proportion of patients who have LM at start of first-line EGFR TKI therapy, Proportion of patients who later develop (during treatment) LM, Proportion of patients with no development of LM, Incidence of LM and time to development of LM from start of first-line EGFR TKI therapy.

Overall survival (in months) measured from first diagnosis of LM disease to the date of death from any cause, with patients last known to be alive censored at the date of last available follow-up.

Proportion of patients prescribed other systemic treatments (chemotherapy, osimertinib, other EGFR TKI, I/O therapy, or other therapy) in combination with first-line EGFR TKI therapy.

Proportion of patients tested for T790M mutation and among those tested, the proportion who were positive for the mutation, including:

Binary distribution of T790M mutation testing and, among those tested, the proportion with a positive result, Type of test used to assess the T790M mutation (tissue/cytology or blood sample).

Among patients tested and positive for T790M mutation, what proportion receives treatment with osimertinib - applicable study measures include binary distribution of osimertinib treatment initiation, and requency distribution of the line of therapy (second- or later-line in the metastatic setting) in which osimertinib was initiated.

Among patients progressing on first-line EGFR TKI therapy and tested for T790M, proportion who receive (or not) second-line therapy and the second-line therapy selection (chemotherapy, osimertinib, other EGFR TKI, I/O therapy, or other therapy), including:

Proportion of patients prescribed second-line therapy, as well as time to second-line therapy initiation, as defined by time from first-line EGFR TKI discontinuation until the earliest of second-line initiation, death, or end of available follow-up, Among patients initiating second-line therapy, frequency distribution of the second-line therapy regimen observed (chemotherapy, osimertinib, other EGFR TKI, I/O therapy, or other therapy).

Among patients progressing on first-line EGFR TKI therapy and not tested for T790M, proportion who receive (or not) second-line therapy and the second-line therapy selection (chemotherapy, osimertinib, other EGFR TKI, I/O therapy, or other therapy), including:

Proportion of patients prescribed second-line therapy, as well as time to second-line therapy initiation, as defined by time from first-line EGFR TKI discontinuation until the earliest of second-line initiation, death, or end of available follow-up, Among patients initiating second-line therapy, frequency distribution of the second-line therapy regimen observed (chemotherapy, osimertinib, other EGFR TKI, I/O therapy, or other therapy).

Proportion of patients prescribed second-line therapy, as well as time to second-line therapy initiation, as defined by time from first-line EGFR TKI discontinuation until the earliest of second-line initiation, death, or end of available follow-up among patients tested and not tested for T790M mutation.

Proportion of patients prescribed third- or later lines of therapy and type of therapies selected (chemotherapy, osimertinib, other EGFR TKI, I/O therapy, or other therapy), and how these proportion varies by the second-line therapy category received.

OS (in months) measured overall from first diagnosis of or progression to locally advanced or metastatic disease, OS from start of first-line EGFR TKI therapy to the date of death from any cause, with patients last known to be alive censored at the date of last available follow-up.

Proportion of patients with other positive mutations, in case additional molecular testing were performed at the time of initial EGFR testing or at the time of T790M testing (e.g., KRAS, BRAF, ROS1 translocation, PD-L1 expression, MET amplification, ALK rearrangement, RET rearrangement, HER2 exon 20 insertion, TP53, others).