A Study to Assess the Incidence of EGFR Mutation in Patients With Newly Diagnosed Locally Advanced or Metastatic Non-Small Cell Lung Cancer in the UK, And of Tarceva (Erlotinib) as First-Line Therapy in EGFR Mutation Positive Patients.

All participants newly diagnosed with recurrent or metastatic NSCLC were tested for EGFR exon 19 deletion or exon 21 mutations.

Incidence of EGFR mutations were summarized with respect to different subgroups as follows: (1) equals (=) Histopathology, (2) = Stage of disease, (3) = Age at consent, (4) = Gender, (5) = Race, (6) = Smoking history.

Best objective response was defined as the best response recorded from the start of treatment until disease progression/recurrence. Tumor response was assessed according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1". Complete Response (CR): Disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to less than (<)10 millimeters (mm). Partial Response (PR): At least a 30 percent (%) decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters. Progressive Disease (PD): At least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study (this may include the baseline sum). The sum must also demonstrate an absolute increase of at least 5 mm. Stable Disease (SD): Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD.

Progression Free Survival (PFS) was defined as the interval (number of days) from the trial treatment start date to the earlier of the date of the first tumor response assessment of PD or the date of death by any cause. Participants who experienced neither of these events or who were lost to followup at the time of the analysis were censored at date of last contact. PFS was summarized according to the Kaplan-Meier method.

Duration of time in months from Screening until Death due to any cause.

The EQ-5D contains a descriptive system that measures 5 health dimensions: mobility, self-care, usual activity, pain/discomfort, and anxiety/depression. The EQ-5D also contains a visual analog scale (EQ-VAS), which records the respondent's self-rated health status on a vertical graduated visual analog scale ranging from 0 (worst imaginable health state) to 100 (best imaginable health state). A negative change indicates improvement.

The EQ-5D contains a descriptive system which measures 5 health dimensions: mobility, self-care, usual activity, pain/discomfort, and anxiety/depression. The participants were required to rate their mobility as the following categories: Category 1. I have no problems in walking about; Category 2. I have some problems in walking about; Category 3. I am confined to bed.

The EQ-5D contains a descriptive system which measures 5 health dimensions: mobility, self-care, usual activity, pain/discomfort, and anxiety/depression. The participants were required to rate their self-care as the following categories: Category 1. I have no problems with self-care; Category 2. I have some problems washing or dressing myself; Category 3. I am unable to wash or dress myself.

The EQ-5D contains a descriptive system which measures 5 health dimensions: mobility, self-care, usual activity, pain/discomfort, and anxiety/depression. The participants were required to rate their ability to perform usual activities as the following categories: Category 1. I have no problems with performing my usual activities; Category 2. I have some problems with performing my usual activities; Category 3. I am unable to perform my usual activities.

The EQ-5D contains a descriptive system which measures 5 health dimensions: mobility, self-care, usual activity, pain/discomfort, and anxiety/depression. The participants were required to rate their pain as the following categories: Category 1. I have no pain or discomfort; Category 2. I have moderate pain or discomfort; Category 3. I have extreme pain or discomfort.

The EQ-5D contains a descriptive system which measures 5 health dimensions: mobility, self-care, usual activity, pain/discomfort, and anxiety/depression. The participants were required to rate their pain as the following categories: Category 1. I am not anxious or depressed; Category 2. I am moderately anxious or depressed; Category 3.I am extremely anxious or depressed.