Trial Outcomes & Findings for Study of GSK1363089 in Metastatic Gastric Cancer (NCT NCT00725712)

A total of 74 participants with Metastatic gastric cancer were enrolled in this sequential cohort study at 15 sites in the United States of America. The study was conducted from 23 March 2007 to 20 October 2009.

Study of GSK1363089 in Metastatic Gastric Cancer

ORR is defined as the percentage of participants achieving best overall response of confirmed complete response (CR) or partial response (PR). Tumor response for participants with measurable lesions was assessed routinely (after 8 weeks of treatment and approximately every 8 weeks thereafter) using RECIST (version 1.0) criteria. The CR for target lesions was defined as disappearance of all target lesions (TLs) and the non-target lesions (NTLs). PR defined as at least 30% decrease in sum of the longest diameter (LD) of TLs, taking as reference baseline sum LD. The safety population included all participants who passed the screening criteria, enrolled in the study, and received at least 1 dose of study drug. Progressive disease will be used as PD.

An AE is any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product whether or not it is considered drug related. This would include any side effect, injury, toxicity, sensitivity reaction, abnormal or worsening of a laboratory value, concurrent illness or sudden death. Pre-existing conditions that worsen during a study will be reported as AEs. SAE is an AE that results in death, is life-threatening, requires inpatient hospitalization or extends a current hospital stay, results in an ongoing or significant incapacity or interferes substantially with normal life functions, or causes a congenital anomaly or birth defect. Medical events that do not result in death, are not life-threatening, or do not require hospitalization may be considered SAEs if they put the participant in danger or require medical or surgical intervention to prevent one of the results listed above.

Participants systolic blood pressure (SBP) and diastolic blood pressure (DBP) were measured in mm of mercury (mmHg). These were collected after the participant sat quietly for at least five minutes. The change from baseline was calculated by subtracting the baseline values from the individual post-randomization values. The data for minimum (min) and maximum (max) post-baseline has been reported. Baseline is defined as the last non-missing record on or before first dose.

The pulse rate or heart rate (HR) for the participant's, were collected after the participant sat quietly for at least five minutes. Baseline evaluations were performed within 72 hours before the first dose. If performed within 24 hours of the first dose, baseline evaluations may serve as the pre-dose Day 1 visit evaluations. The change from baseline was calculated by subtracting the baseline values from the individual post-randomization values. Baseline was defined as pre-dose, Day 1. The HR was measured in beats per minute (bpm). The min and max values have been reported.

The body temperature for the participants was assessed. These were collected after the participant sat quietly for at least five minutes. The change from baseline was calculated by subtracting the baseline values from the individual post-randomization values. Baseline is defined as the last non-missing record on or before first dose.

The RR for the participant's, were collected after the participant sat quietly for at least five minutes. Baseline evaluations should be performed within 72 hours before the first dose. If performed within 24 hours of the first dose, baseline evaluations may serve as the pre-dose Day 1 visit evaluations. The change from Baseline was calculated by subtracting the Baseline values from the individual post-randomization values. Baseline was defined as pre-dose, Day 1 . The RR was measured in breaths per minute. Min and max post-baseline values are reported.

The data for serum chemistry parameters like albumin, alanine aminotransferase (ALT), alkaline phosphatase (ALP), amylase, aspartate amino transferase (AST), calcium, carbon dioxide, creatinine, gamma glutamyl transferase (GGT), glucose, blood urea nitrogen (BUN), chloride, free thyroxine, free triiodothyronine, lipase, phosphorous, potassium, sodium, total bilirubin, lactate dehydrogenase, total protein. The abnormal values have been reported wherein data for normal to low and normal to high has been reported.

The worst overall common terminology criteria for adverse events version 3.0 (CTCAE) grade (G) shift post baseline for each parameter was mentioned. Only worst case scenarios are presented. CTCAE grading is done as per intensity namely mild moderate severe life-threatening or Death. Analysis was done for Alanine aminotransferases, aspartate aminotransferases, Albumin, alkaline phosphatase, calcium, sodium, potassium, glucose, amylase, amylase, bilirubin, creatinine, phosphate, gamma glutamyl transferases (GGT), and triglycerol lipase. Worst Overall defined as worst post baseline out of normal range flag in the order of (high, low, normal) before 30 day follow up. Data for G3 and G4 is reported.

The hematology parameters worst case overall CTCAE grade shift post Baseline for each parameter was mentioned. CTCAE grading for version 3.0 was used and done as per intensity namely mild moderate severe life-threatening or Death. Participants were analyzed for basophils, eosinophils, erythrocytes, hematocrit, and monocytes were analyzed. Only the abnormal values were reported where normal to high and normal to low changes were reported. Worst Overall was defined as highest post baseline CTCAE grade before 30 day follow up.

The urinalysis parameters by worst case overall CTCAE grade shift post Baseline for each parameter were mentioned as per the CTCAE grading for version 3.0 and done as per intensity namely mild moderate severe life-threatening or Death. Participants were analyzed for abnormal values for bilirubin, ketones, nitrites, occult blood, pH, protein, specific gravity, and urobilinogen.

The worst overall grading by CTCAE version 3.0, was used to report the shift from baseline for hematology parameters namely hemoglobin, platelets and lymphocytes. The grades were namely G0, G1, G2, G3 and G4. The data for shifts from G2 to G3 and G0 to G4, mainly the shifts to higher grades G3 and G4 have been reported.

The number of participants who received concomitant medication during the study were reported. The data has been reported for the participants who have received subsequent chemotherapy, subsequent radiation therapy or other therapy.

Duration of PFS in months is defined as (Date of Disease Progression/Death - Date of First Dose + 1)/30.44. For participants who did not reach an event (disease progression or death) at the time of data cut-off, duration of PFS is censored at date of last available tumor assessment that is not 'Unable to Evaluate'. For participants who did not have any post-baseline tumor assessments, PFS was censored at Day 1. For any participants who received subsequent anti-cancer therapy, PFS will be right censored at the date of last adequate tumor assessment on or prior to the date of anti-cancer therapy initiation. For any participants who died or progressed after an extended lost-to-follow-up time (greater than 17 weeks), PFS was censored at the date of last adequate assessment prior to extended lost-to follow-up.

Duration of stable disease, was defined as the time between the date of first dose and death or disease progression, in participants whose best overall response was not progressive disease

It is defined as the number of participants achieving best overall response of confirmed CR or PR or stable disease (SD). It was assessed using RECIST criteria 1.0. The CR for target lesions was defined as disappearance of all TLs and the NTLs. PR is at least 30% decrease in sum of the LD of TLs, taking as reference baseline sum LD. SD was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as a reference, the smallest sum LD since the treatment started.

Duration of OS is defined as (Date of Death \[due to any cause\]) minus Date of first dose. For the participants who were alive at the time of data cut-off, duration of overall survival was censored at the date of last contact. The upper value of the full range was censored observation.