A Study Of PF-06463922 An ALK/ROS1 Inhibitor In Patients With Advanced Non Small Cell Lung Cancer With Specific Molecular Alterations

Objective response (OR) refers to confirmed CR or PR according to RECIST version 1.1. Intracranial OR refers to confirmed CR or PR considering only lesions within brain. CR was defined as the disappearance of all non-lymph node target lesions (where all target lesions are recorded with a length of 0 mm on Target Lesions eCRF). Any pathological lymph nodes (recorded as target lesion) must have reduction in short axis to <10 mm. PR was defined as a 30 % or more decrease in SLD of target lesions, taking as reference the baseline SLD. Results presented here were based on independent central review.

Time to tumor response (TTR) was defined as the time from the first dose of study treatment to the first documentation of objective tumor response (CR or PR). For participants whose objective response proceeded from PR to CR, the onset of PR was taken as the onset of response. CR was defined as the disappearance of all non-lymph node target lesions (where all target lesions are recorded with a length of 0 mm on Target Lesions eCRF). Any pathological lymph nodes (recorded as target lesion) must have reduction in short axis to <10 mm. PR was defined as a 30 % or more decrease in SLD of target lesions, taking as reference the baseline SLD. TTR was only calculated for the subgroup of participants with a confirmed objective tumor response. Intracranial TTR was only calculated for participants with confirmed intracranial objective response. Results presented here were based on independent central review.

Duration of response(DOR): time from first documentation of objective tumor response (CR/PR) to first documentation of disease progression (PD) or to death due to any cause, whichever occurred first. DOR: calculated for subgroup of participants with confirmed objective tumor response. Intracranial DOR: calculated for participants with confirmed intracranial objective response. CR:disappearance of all non-lymph node target lesions (where all target lesions are recorded with length of 0mm on Target Lesion eCRF). Any pathological lymph node (recorded as target lesion) must have reduction in short axis to <10mm. PR:30% or more decrease in SLD of target lesion, taking as reference baseline SLD. PD:20% or more increase in the SLD of target lesions relative to baseline or smallest SLD (nadir) recorded since first dose. In addition, also demonstrate absolute increase of at least 5mm (>=5mm) relative to baseline or smallest SLD (nadir) recorded since first dose.

Tumor response was evaluated according to RECIST version 1.1, and disease control: confirmed CR, confirmed PR, or stable disease (SD). Intracranial assessment was only performed for participants CNS metastases. CR was defined as disappearance of all non-lymph node target lesions (where all target lesions are recorded with length of 0mm on Target Lesions eCRF). Any pathological lymph nodes (recorded as target lesion) must have reduction in short axis to <10 mm. PR was defined as 30% or more decrease in SLD of target lesions, taking as reference baseline SLD. Progressive disease: 20% or more increase in SLD of target lesions relative to baseline or smallest SLD (nadir) recorded since first dose. In addition to relative increase of 20%, SLD must also demonstrate absolute increase of at least 5mm (>=5mm) relative to baseline or smallest SLD (nadir) recorded since first dose. Results presented here were based on independent central review.

The probability of the first event being a CNS progression, a non-CNS progression, or death was evaluated with a competing risk approach by estimating cumulative incidence functions (range: 0-1) relative to the analysis set. The time to first event being a Competing Event (either "CNS progression" or "non CNS progression" or "Death") was defined as time from first dose until the date of that specific event. Participants not known to have any of the Competing Events were censored on the date they were last assessed for disease status for PFS. Participants who presented one type of event were counted as a competing cause of failure for the analysis of other type of events. For each type of event, the cumulative incidence function corresponding to the nearest time point preceding 1 year is presented. The results are based on independent central review.

PFS was defined as the time from the first dose of study treatment to the first documentation of objective PD or to death on study due to any cause, whichever came first. Progressive disease was defined by a 20% or more increase in the SLD of target lesions relative to baseline or the smallest SLD (nadir) recorded since first dose. In addition to the relative increase of 20%, SLD must also demonstrate an absolute increase of at least 5 mm (>= 5 mm) relative to baseline or the smallest SLD (nadir) recorded since the first dose. Results presented here were based on independent central review.

OS was defined as the time from first dose to the date of death due to any cause. For participants still alive at the time of analysis, the OS time was censored on the last date the participants were known to be alive. Estimates of OS and its 95% confidence interval were determined using Kaplan-Meier method.

Maximum observed plasma concentration (Cmax) of PF-06463922 was observed directly from data.

Maximum Observed Plasma Concentration (Cmax) of PF-06463922 was observed directly from data.

Tmax of PF-06463922 was observed directly from data as time of first occurrence.

Tmax of PF-06463922 was observed directly from data as time of first occurrence.

Tau refers to the dosing interval, and it equals to 12 or 24 hours for BID or QD dosing, respectively. AUCtau was determined using linear/log trapezoidal method.

Tau refers to the dosing interval, and it equals to 12 or 24 hours for BID or QD dosing, respectively. AUCtau was determined using linear/log trapezoidal method.

AUCinf was calculated as AUClast + (Clast*/kel), where AUClast was the area under the plasma concentration-time profile from time 0 to the time of the last quantifiable concentration, Clast* was the predicted plasma concentration at the last quantifiable time point estimated from the log-linear regression analysis, and kel was the rate constant for terminal phase.

Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. CL/F was calculated as dose/AUCinf, where AUCinf was the area under the plasma concentration-time profile from time 0 extrapolated to infinite time.

Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. CL/F was calculated as dose/AUCinf, where AUCinf was the area under the plasma concentration-time profile from time 0 extrapolated to infinite time.

Vz/F was defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug, and calculated as dose/(AUCinf*kel), where AUCinf was the area under the plasma concentration-time profile from time 0 extrapolated to infinite time, kel was the rate constant for terminal phase.

Rac was calculated as Day 15 AUCtau/Day -7 AUCtau or Day 1 AUCtau, where AUCtau was the area under the plasma concentration-time profile from time 0 to time tau (12 and 24 hours for BID and QD dosing regimen, respectively).

Terminal plasma half-life was defined as the time measured for the plasma concentration to decrease by one half, and calculated as loge(2)/kel, where kel was the rate constant for terminal phase.

Rss was calculated as Day 15 AUCtau/Day -7 AUCinf, where AUCtau was the area under the plasma concentration-time profile from time 0 to time tau (12 and 24 hours for BID and QD dosing regimen, respectively), and AUCinf was the area under the plasma concentration-time profile from time 0 extrapolated to infinite time.

Renal clearance was calculated as Aetau/AUCtau, where Aetau was the cumulative amount of drug recovered unchanged in urine up to dosing interval tau (24 hours for QD dosing regimen), and AUCtau was the area under the plasma concentration-time profile from time 0 to time tau (24 hours for QD dosing regimen).

Dosing interval was 24 hours for QD dosing regimen. Aetau% was calculated as 100*Ae24/dose, where Ae24 was the cumulative amount of drug recovered unchanged in urine up to 24 hours post-dose.

Cmax of midazolam was observed directly from data. Only participants in 25 mg and 150 mg QD groups were given midazolam. Day -7 data reflected the PK assessment before administration of PF-06463922, and Cycle 1 Day 15 data reflected the PK assessment after multiple doses of PF-06463922 were administered.

Tmax of midazolam was observed directly from data as time of first occurrence. Only participants in 25 mg and 150 mg QD groups were given midazolam. Day -7 data reflect the PK assessment before administration of PF-06463922, and Cycle 1 Day 15 data reflect the PK assessment after multiple doses of PF-06463922 were administered.

Area under the plasma concentration-time profile from time 0 to the time of the last quantifiable concentration (AUClast) of midazolam was determined using linear/log trapezoidal method. Only participants in 25 mg and 150 mg QD groups were given midazolam. Day -7 data reflect the PK assessment before administration of PF-06463922, and Cycle 1 Day 15 data reflect the PK assessment after multiple doses of PF-06463922 were administered.

AUCinf was calculated as AUClast + (Clast*/kel), where AUClast was the area under the plasma concentration-time profile from time 0 to the time of the last quantifiable concentration, Clast* was the predicted plasma concentration at the last quantifiable time point estimated from the log-linear regression analysis, and kel was the rate constant for terminal phase. Only participants in 25 mg and 150 mg QD groups were given midazolam. Day -7 data reflect the PK assessment before administration of PF-06463922, and Cycle 1 Day 15 data reflect the PK assessment after multiple doses of PF-06463922 were administered.

Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. CL/F was calculated as dose/AUCinf, where AUCinf was the area under the plasma concentration-time profile from time 0 extrapolated to infinite time. Only participants in 25 mg and 150 mg QD groups were given midazolam. Day -7 data reflect the PK assessment before administration of PF-06463922, and Cycle 1 Day 15 data reflect the PK assessment after multiple doses of PF-06463922 were administered.

Vz/F was defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug, and calculated as dose/(AUCinf*kel), where AUCinf was the area under the plasma concentration-time profile from time 0 extrapolated to infinite time, kel was the rate constant for terminal phase. Only participants in 25 mg and 150 mg QD groups were given midazolam. Day -7 data reflect the PK assessment before administration of PF-06463922, and Cycle 1 Day 15 data reflect the PK assessment after multiple doses of PF-06463922 were administered.

Terminal plasma half-life was defined as the time measured for the plasma concentration to decrease by one half, and calculated as loge(2)/kel, where kel was the rate constant for terminal phase. Only participants in 25 mg and 150 mg QD groups were given midazolam. Day -7 data reflect the PK assessment before administration of PF-06463922, and Cycle 1 Day 15 data reflect the PK assessment after multiple doses of PF-06463922 were administered.

Plasma circulating nucleic acid (CNA) samples were analyzed for ALK kinase domain mutations by digital polymerase chain reaction (PCR) BEAMing technology. Number of participants with one or more ALK mutations is presented.

Tumor tissues from archived tissue specimens and/or a de novo biopsy were analyzed for ALK kinase domain mutations. Number of participants with one or more ALK mutations is presented.

European Organization for Research and Treatment of Cancer Core Quality of Life Questionnaire (EORTC QLQ)-C30 (version 3.0) consists of 30 questions assessing 5 functional domains (physical, role, emotional, cognitive and social), global quality of life (QoL), disease/treatment related symptoms (fatigue, nausea/vomiting, pain, dyspnea, insomnia, appetite loss, constipation and diarrhea), and the perceived financial impact of disease. Each scale was transformed to a range of 0 to 100 using standard EORTC algorithm. For global QoL and functional scales, higher score indicate better performance, and improvement was defined as an increase of at least 10 points, worsening was defined as a decrease of at least 10 points. For symptom scales, higher score indicates worse symptoms, and improvement was defined as a decrease of at least 10 points, worsening was defined as an increase of at least 10 points. All scales which had not improved nor worsened were considered stable.

EORTC QLQ-LC13 is the lung cancer module of EORTC QLQ-C30 and includes questions specific to the disease associated symptoms (dyspnea, cough, hemoptysis, and site specific pain), treatment-related symptoms (sore mouth, dysphagia, neuropathy and alopecia), and analgesic use of lung cancer patients. The scale was transformed to a range of 0 to 100 using standard EORTC algorithm. Higher score indicates worse symptoms, and improvement was defined as a decrease of at least 10 points, worsening was defined as an increase of at least 10 points. All scales which had not improved nor worsened were considered stable.

In Phase 1, the MMSE was collected to assess mental status. The MMSE is a 30 item questionnaire that tests 5 areas of cognitive function: orientation, registration, attention and calculation, recall and language. The maximum score is 30 and minimum score is 0. Highest score indicates no cognitive impairment, lowest score indicates severe cognitive impairment. The MMSE was removed under Amendment 6 of the study protocol, and not required for Phase 2, as the tool was not considered meaningful for assessment of cognitive function.

Time to tumor response (TTR) was defined as the time from the first dose of study treatment to the first documentation of objective tumor response (CR or PR). For participants whose objective response proceeded from PR to CR, the onset of PR was taken as the onset of response. TTR was only calculated for the subgroup of participants with a confirmed objective tumor response. Intracranial TTR was only calculated for participants with confirmed intracranial objective response. CR was defined as the disappearance of all non-lymph node target lesions (where all target lesions are recorded with a length of 0 mm on Target Lesions eCRF). Any pathological lymph nodes (recorded as target lesion) must have reduction in short axis to <10 mm. PR was defined as a 30 % or more decrease in SLD of target lesions, taking as reference the baseline SLD. Results presented here were based on independent central review.

Duration of response(DOR): time from first documentation of objective tumor response (CR/PR) to first documentation of PD or to death due to any cause, whichever occurred first. DOR: calculated for subgroup of participants with confirmed objective tumor response. Intracranial DOR: calculated for participants with confirmed intracranial objective response. CR:disappearance of all non-lymph node target lesions (where all target lesions are recorded with length of 0mm on Target Lesion eCRF). Any pathological lymph node (recorded as target lesion) must have reduction in short axis to <10mm. PR:30% or more decrease in SLD of target lesion, taking as reference baseline SLD. PD:20% or more increase in the SLD of target lesions relative to baseline or smallest SLD (nadir) recorded since first dose. In addition, also demonstrate absolute increase of at least 5mm (>=5mm) relative to baseline or smallest SLD (nadir) recorded since first dose.

Tumor response was evaluated according to RECIST version 1.1, and disease control was defined as confirmed CR, confirmed PR, or stable disease (SD). CR was defined as the disappearance of all non-lymph node target lesions (where all target lesions are recorded with a length of 0 mm on Target Lesions eCRF). Any pathological lymph nodes (recorded as target lesion) must have reduction in short axis to <10 mm. PR was defined as a 30 % or more decrease in SLD of target lesions, taking as reference the baseline SLD. SD= when neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD is observed, taking as reference the smallest sum diameters while on study. Intracranial assessment was only performed for participants CNS metastases. Results presented here were based on independent central review.

TTP on the last prior therapy was defined as time from the first dose date of the last prior treatment regimen to the date of progression. Progressive disease was defined by a 20% or more increase in the SLD of target lesions relative to baseline or the smallest SLD (nadir) recorded since first dose. In addition to the relative increase of 20%, SLD must also demonstrate an absolute increase of at least 5 mm (>= 5 mm) relative to baseline or the smallest SLD (nadir) recorded since the first dose.

Time to progression (TTP) was defined as the time from the first dose of study treatment to the first documentation of objective PD. Intracranial TTP was defined as the time from the first dose of study treatment to the date of the first documentation of objective progression of intracranial disease, based on either new brain metastases or progression of existing brain metastases. Progressive disease was defined by a 20% or more increase in the SLD of target lesions relative to baseline or the smallest SLD (nadir) recorded since first dose. In addition to the relative increase of 20%, SLD must also demonstrate an absolute increase of at least 5 mm (>= 5 mm) relative to baseline or the smallest SLD (nadir) recorded since the first dose. Results presented here were based on independent central review.

Probability of first event being CNS progression, non-CNS progression, or death was evaluated with competing risk approach by estimating cumulative incidence functions (range: 0-1) relative to analysis set. Time to first event being Competing Event (either "CNS progression" or "non CNS progression" or "Death") = time from first dose until date of that specific event. Participants not known to have any of Competing Events were censored on date they were last assessed for disease status for PFS. Participants who presented one type of event were counted as competing cause of failure for analysis of other type of events. For each type of event, cumulative incidence function corresponding to nearest time point preceding 1 year is presented. PD:20% or more increase in SLD of target lesion relative to baseline or smallest SLD (nadir) recorded since first dose. SLD must demonstrate absolute increase of atleast 5mm(>=5 mm) relative to baseline or smallest SLD (nadir) recorded since first dose.

PFS was defined as the time from the first dose of study treatment to the first documentation of objective PD or to death on study due to any cause, whichever came first. Progressive disease was defined by a 20% or more increase in the SLD of target lesions relative to baseline or the smallest SLD (nadir) recorded since first dose. In addition to the relative increase of 20%, SLD must also demonstrate an absolute increase of at least 5 mm (>= 5 mm) relative to baseline or the smallest SLD (nadir) recorded since the first dose. Results presented here were based on independent central review.

OS was defined as the time from first dose to the date of death due to any cause. For participants still alive at the time of analysis, the OS time was censored on the last date the participants were known to be alive. Estimates of OS and its 95% confidence interval were determined using Kaplan-Meier method.

Maximum observed plasma concentration (Cmax) of PF-06463922 was observed directly from data.

Tmax of PF-06463922 was observed directly from data as time of first occurrence.

AUCinf was calculated as AUClast + (Clast*/kel), where AUClast was the area under the plasma concentration-time profile from time 0 to the time of the last quantifiable concentration, Clast* was the predicted plasma concentration at the last quantifiable time point estimated from the log-linear regression analysis, and kel was the rate constant for terminal phase.

Tau refers to the dosing interval, and it equals to 24 hours for QD dosing which was adopted in Phase 2. AUCtau was determined using linear/log trapezoidal method.

Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. CL/F was calculated as dose/AUCinf, where AUCinf was the area under the plasma concentration-time profile from time 0 extrapolated to infinite time.

Vz/F was defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug, and calculated as dose/(AUCinf*kel), where AUCinf was the area under the plasma concentration-time profile from time 0 extrapolated to infinite time, kel was the rate constant for terminal phase.

Terminal plasma half-life was defined as the time measured for the plasma concentration to decrease by one half, and calculated as loge(2)/kel, where kel was the rate constant for terminal phase.

Rac was calculated as Day 15 AUCtau/Day -7 AUCtau, where AUCtau was the area under the plasma concentration-time profile from time 0 to time tau (24 hours for QD dosing regimen which was adopted in Phase 2).

Rss was calculated as Day 15 AUCtau/Day -7 AUCinf, where AUCtau was the area under the plasma concentration-time profile from time 0 to time tau (24 hours for QD dosing regimen which was adopted in Phase 2), and AUCinf was the area under the plasma concentration-time profile from time 0 extrapolated to infinite time.

Plasma CNA samples were analyzed for ALK kinase domain mutations by Next Generation Sequencing (NGS). Number of participants with one or more ALK mutations is presented.

Tumor tissues from archived tissue specimens and/or a de novo biopsy were analyzed for ALK kinase domain mutations. Number of participants with one or more ALK mutations is presented.

European Organization for Research and Treatment of Cancer Core Quality of Life Questionnaire (EORTC QLQ)-C30 (version 3.0) consists of 30 questions assessing 5 functional domains (physical, role, emotional, cognitive and social), global quality of life (QoL), disease/treatment related symptoms (fatigue, nausea/vomiting, pain, dyspnea, insomnia, appetite loss, constipation and diarrhea), and the perceived financial impact of disease. Each scale was transformed to a range of 0 to 100 using standard EORTC algorithm. For global QoL and functional scales, higher score indicate better performance, and improvement was defined as an increase of at least 10 points, worsening was defined as a decrease of at least 10 points. For symptom scales, higher score indicates worse symptoms, and improvement was defined as a decrease of at least 10 points, worsening was defined as an increase of at least 10 points. All scales which had not improved nor worsened were considered stable.

EORTC QLQ-LC13 is the lung cancer module of EORTC QLQ-C30 and includes questions specific to the disease associated symptoms (dyspnea, cough, hemoptysis, and site specific pain), treatment-related symptoms (sore mouth, dysphagia, neuropathy and alopecia), and analgesic use of lung cancer patients. The scale was transformed to a range of 0 to 100 using standard EORTC algorithm. Higher score indicates worse symptoms, and improvement was defined as a decrease of at least 10 points, worsening was defined as an increase of at least 10 points. All scales which had not improved nor worsened were considered stable.

AE: any untoward medical occurrence in clinical investigation participant administered a product or medical device, regardless of causal relationship to study treatment. Treatment-emergent AEs (TEAEs): AEs which occurred for first time during effective duration of treatment or AEs that increased in severity during treatment. Serious AEs (SAEs): any untoward medical occurrence at any dose that resulted in death; was life-threatening (immediate risk of death); required inpatient hospitalization or caused prolongation of existing hospitalization; resulted in persistent or significant disability/incapacity (substantial disruption of ability to conduction normal life function). AEs included SAEs and non-serious AEs. Severity was graded as per National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 4.03.Grade1: mild, Grade2: moderate, Grade3: severe, Grade4: Life threatening consequences; urgent intervention indicated, Grade 5: death related to AE.

Hematology evaluation included hemoglobin, platelets, white blood cell, absolute neutrophils, absolute lymphocytes, absolute monocytes, absolute eosinophils and absolute basophils. Hematology parameters with any abnormalities were reported in this outcome measure.

Chemistry evaluation included alanine aminotransferase (ALT), alkaline phosphatase, aspartate aminotransferase (AST), blood bilirubin, creatine phosphokinase (CPK), creatinine, gamma-glutamyl transferase (GGT), calcium, sodium, potassium, magnesium, albumin, glucose (non-fasted), albumin, phosphorus or phosphate, serum amylase and lipase.

Coagulation evaluation included activated partial thromboplastin time, international normalized ratio (INR), and prothrombin time. Lipid evaluation included Cholesterol and triglycerides.

Blood pressure (BP), including systolic BP (SBP) and diastolic BP (DBP), and pulse rate were recorded in sitting position. Body weight was also measured.

Left Ventricular Ejection Fraction (LVEF) was determined by echocardiogram. Baseline was defined as the measurement prior to the first dose of study treatment.

Triplicate 12-lead electrocardiograms (ECGs) were performed approximately 2 minutes apart to determine mean QTc interval (QT interval corrected for heart rate). QT interval was corrected for heart rate using Fridericia's formula to provide QTcF. Absolute values and changes from baseline were summarized according to pre-defined criteria. Baseline was defined as the last evaluation on or prior to the first dose of study treatment.

The Columbia Suicide Severity Rating Scale (C-SSRS) was used to analyze participants' suicidal ideation and behavior, and it is a unique, simple and short method of assessing both behavior and ideation that tracks all suicidal events and provides a summary of suicidality. It assesses the lethality of attempts and other features of ideation (frequency, duration, controllability, reasons for ideation and deterrents), all of which are significantly predictive of completed suicide. Maximum score of 4 or 5 indicates maximum suicidal ideation and minimum score of "0" indicates no suicidal ideation.

The Beck Depression Inventory (BDI)-II is a 21-item self-report scale, with each item rated by participants on a 4-point scale (ranging from 0-3, where 0 indicated lowest depression and 3 indicated severe depression). The scale includes items capturing mood, (loss of pleasure, sadness, and irritability), suicidal ideation, and cognitive signs (punitive thoughts, self-criticism, self-dislike, pessimism, and poor concentration) as well as somatic signs (appetite, sleep, fatigue and libido). Scores were obtained by adding up the total points from the series of answers. Higher total scores indicate more severe depressive symptoms. The standardized cutoffs are as follows: 0-13: minimal depression; 14-19: mild depression; 20-28: moderate depression; 29-63: severe depression.

The Detection Test is a measure of psychomotor function and uses a well validated simple reaction time paradigm with playing card stimuli. In this test, the on-screen instructions ask: "Has the card turned over?". A playing card is presented face down in the center of the screen. The card flips over so it is face up. As soon as the card flips over the participant must press "Yes". The participant is encouraged to work as quickly as they can and be as accurate as possible. The speed and accuracy of each response are recorded and mean of the log10 transformed reaction times for correct responses is calculated. Lower values of least square mean change from baseline indicate performance decline. Upper limit of 95% confidence interval of -0.00 or lower indicate statistically significant decline of performance over baseline at that cycle.

The Identification Test is a measure of visual attention and uses a well validated choice reaction time paradigm with playing card stimuli. In this task, the playing cards are all red or black jokers. The on-screen instructions ask: "Is the card red?". A playing card is presented face down in the center of the screen. The card flips over so it is face up. As soon as it flips over the participant must decide whether the card is red or not. If it is red the participant should press "Yes", and if it is not red the participant should press "No". The participant is encouraged to work as quickly and accurately as possible. The speed and accuracy of each response are recorded and mean of the log10 transformed reaction times for correct responses is calculated. Lower values of least square mean change from baseline indicate performance decline. Upper limit of 95% confidence interval of -0.00 or lower indicate statistically significant decline of performance over baseline at that cycle.

The One Back Test is a measure of working memory and uses a well validated n back paradigm with playing cards. In this task, the on-screen instructions ask: "Is the previous card the same?". A playing card is presented in the center of the screen. The participant must decide whether the card is the same as the previous card. If it is the same the participant should press "Yes", and if not press "No". The participant is encouraged to work as quickly and accurately as possible. The speed and accuracy of each response are recorded, mean of the log10 transformed reaction times for correct responses is used to demonstrate speed of performance, and the arcsine transformation of the square root of the proportion of correct responses is used to demonstrate accuracy. Lower values of least square mean change from baseline indicate performance decline. Upper limit of 95% confidence interval of -0.00 or lower indicate statistically significant decline of performance over baseline at that cycle.

The International Shopping List task is a measure of verbal learning and uses a well validated list learning paradigm administered using a computer. High frequencies, high imagery, concrete nouns (items from a shopping list) were read to the participant at the rate of one word every 2 seconds. Once all 12 words had been read, the participant was asked to recall as many of the words as quickly as possible. The words recalled by the participant were marked on the computer screen. When the participant could recall no more words, the same list was read again. The words recalled by the participant were recorded. This was then repeated a third time. Total number of correct responses on 3 consecutive trials at a single assessment was recorded. Lower values of least square mean change from baseline indicate performance decline. Upper limit of 95% confidence interval of -0.00 or lower indicate statistically significant decline of performance over baseline at that cycle.

This test was performed in the same way as the International Shopping List Test, with the exception that, the delayed recall condition required the participant to recall the words from the list 15 30 minutes later without having the list read again. During the recognition condition, the qualified personnel read a shopping list item that may or may not have been on the original list and the participant had to respond either affirmatively (if the item was on the original list) or negatively (if it was not). Total number of correct responses made in remembering the word list after a delay was recorded. Lower values of least square mean change from baseline indicate performance decline. Upper limit of 95% confidence interval of -0.00 or lower indicate statistically significant decline of performance over baseline at that cycle.

PR Interval was determined by ECG measurement. PR interval had following categories: change from baseline>=25 percent, 40 to <60 milliseconds (msec), 60 to <80 msec and >=80 msec. Baseline was defined as the average of the triplicate measurements prior to the first dose of study drug.