Study Of Dacomitinib (PF-00299804) In Advanced NSCLC Patients (Post Chemo Or Select First Line) To Evaluate Prophylactic Intervention On Derm And GI AEs And PRO

SDAEI of all causality and all grades were evaluated in participants in Cohort I. These SDAEIs included dermatitis acneiform, dry skin, exfoliative rash, nail discoloration, nail disorder, paronychia, pruritus, rash, skin exfoliation, skin fissures, skin infection, skin laceration and skin ulcer.

95% confidence interval (CI) calculated using exact method based on binomial distribution.

After protocol amendment 1, Arm C was removed from Cohort I and enrollment to Arm C was terminated. Only 7 participants were enrolled in Cohort I Arm C as a result. Given the smaller sample size, analyse of Outcome Measure 1 was not conducted in Cohort I Arm C.

SDAEI of all causality and Grade ≥2 were evaluated in participants in Cohort I. These SDAEIs included dermatitis acneiform, dry skin, exfoliative rash, nail discoloration, nail disorder, paronychia, pruritus, rash, skin exfoliation, skin fissures, skin infection, skin laceration and skin ulcer. Adverse events (AEs) were graded for severity using the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE, Version 4.0).

95% CI calculated using exact method based on binomial distribution. After protocol amendment 1, Arm C was removed from Cohort I and enrollment to Arm C was terminated. Only 7 participants were enrolled in Cohort I Arm C as a result. Given the smaller sample size, analyse of Outcome Measure 2 was not conducted in Cohort I Arm C.

Patient Reported Outcomes (PROs) of Health Related Quality of Life (HRQoL) & disease/treatment-related symptoms were assessed using Dermatologic Survey (Skindex-16) that assesses "bother". It includes 3 multi-item scales: symptoms, emotions & functioning. Individual scaled scores & total scores were determined. Skindex questions were transformed to a linear scale of 0 (never bothered) to 100 (always bothered). Subscale scores are an average of non-missing questions in a given scale if greater than (>) 75% of total subscale questions are non-missing. The Total Score is an average of all non-missing questions in the Skindex if >75% of total questions are non-missing. A negative change score represents a better quality of life. A change score of 10 points is considered clinically significant.

Skindex completion criteria were defined as completion of 3 out of 4 items for questions 1 to 4, 6 out of 7 items for questions 5 to 11, 4 out of 5 items for questions 12 to 16 for the visit.

Diarrhea AEs of all causality, all grade and Grade ≥2 were evaluated in participants in Cohort II. AEs were graded for severity using the NCI-CTCAE, Version 4.0.

95% CI calculated using exact method based on binomial distribution.

Diarrhea severity was assessed using the modified-OMDQ. This questionnaire is comprised of 6 questions in total; however, only two items relate to diarrhea symptoms (item 5 and item 6). Symptoms scores were developed for both the full questionnaire and for the diarrhea-only questions for each completed survey. Mucositis questions were transformed to a score range of 0 to 10. Increasing OMDQ values are associated with greater symptom burden.

Modified OMDQ completion criteria were defined as completion of all 4 questions (questions 2, 4, 5 and 6).

M/T = mouth and throat.

SDAEI of all causality and all grades were evaluated in participants in Cohort II. These SDAEIs included dermatitis acneiform, dry skin, exfoliative rash, nail discoloration, nail disorder, paronychia, pruritus, rash, skin exfoliation, skin fissures, skin infection, skin laceration and skin ulcer.

95% CI calculated using exact method based on binomial distribution.

SDAEI of all causality and Grade ≥2 were evaluated in participants in Cohort II. These SDAEIs included dermatitis acneiform, dry skin, exfoliative rash, nail discoloration, nail disorder, paronychia, pruritus, rash, skin exfoliation, skin fissures, skin infection, skin laceration and skin ulcer. AEs were graded for severity using the NCI-CTCAE, Version 4.0.

95% CI calculated using exact method based on binomial distribution.

PROs of HRQoL and disease/treatment-related symptoms were assessed using Dermatologic Survey (Skindex-16) that assesses "bother". It includes 3 multi-item scales: symptoms, emotions & functioning. Individual scaled scores & total scores were determined. Skindex questions were transformed to a linear scale of 0 (never bothered) to 100 (always bothered). Subscale scores are an average of non-missing questions in a given scale if > 75% of total subscale questions are non-missing. The Total Score is an average of all non-missing questions in the Skindex if >75% of total questions are non-missing. A negative change score represents a better quality of life. A change score of 10 points is considered clinically significant.

Skindex completion criteria were defined as completion of 3 out of 4 items for questions 1 to 4, 6 out of 7 items for questions 5 to 11, 4 out of 5 items for questions 12 to 16 for the visit.

AUC0-24 is the area under the plasma concentration-time curve (AUC) from time 0 to 24 hours post-dose. AUC0-120 is the AUC from time 0 to 120 hours post-dose. AUC was calculated by the linear trapezoidal method using a non-compartmental pharmacokinetic (PK) analysis.

ng*hr/mL = nanogram hours per milliliter

Cmax was obtained from direct inspection of the data. ng/mL = nanograms per milliliter

Tmax was obtained from direct inspection of the data as the time of first occurence of Cmax.

Medications used concomitantly for SDAEIs, diarrhea and mucositis were evaluated for all participants who received dacomitinib on a continuous basis with a preemptive prophylactic (Cohorts I and II) or as an interrupted dosing regimen (Cohort III).

AUCtau was the AUC from time 0 to the end of the dosing interval, where the dosing interval was 24 hours. AUCtau was calculated by the linear/log trapezoidal method using a non-compartmental PK analysis.

Cmax was obtained from direct inspection of the data.

Tmax was obtained from direct inspection of the data as the time of first occurence of Cmax.

CL/F was calculated as dose/AUCtau.

Ctrough was the pre-dose plasma concentration of dacomitinib at steady state obtained from direct inspection of the data.

Number of participants analyzed is the total number of participants in the treatment group in the indicated population, n is the number of participants contributing to the summary statistics.

Ctrough was the pre-dose plasma concentration of the dacomitinib metabolite PF-05199265 at steady state obtained from direct inspection of the data.

Number of participants analyzed is the total number of participants in the treatment group in the indicated population, n is the number of participants contributing to the summary statistics.