Study Of Two Dosing Regimens Of PF-04937319 Compared To An Approved Agent (Sitagliptin) In Patients With Type 2 Diabetes

Plasma glucose concentration was determined predose (Hour 0) and at 1.5, 3, 5, 6.5, 8, 11, 12.5, 14, 16, 20, and 24 hours postdose on Days 0 (baseline) and 14. WMDG was calculated as the area under the curve (AUC) of the 12-point plasma glucose concentration-time profile divided by 24 hours.

Blood samples for measurement of glucose to permit derivation of pre-meal collections at the pre-specified nominal timepoints of each period: predose (ie, time "0"), 1.5, 3, 5, 6.5, 8, 11, 12.5, 14, 16 and 20 hours on Day 0 (baseline) and Day 14; and predose on Days 1 and 15.

Blood samples for measurement of glucose to permit derivation of pre-meal collections of blood samples for C-peptide at the pre-specified nominal timepoints at predose, 5 and 11 hours on Day 0 (baseline) and Day 14.

Blood samples for measurement of glucose to permit derivation of pre-meal collections of blood samples for insulin at 0, 5 and 11 hours on Day 0 (baseline) and Day 14.

The total number of participants with laboratory test abnormalities (without regard to baseline abnormality) was assessed.

Vital signs included blood pressure (BP; supine, sitting and standing) and pulse rate. Vital signs criteria of potential clinical concern were 1), BP: sitting systolic BP (SBP) greater than or equal to (>=) 30 millimeters of mercury (mm Hg) change from baseline, sitting SBP =<20 mmHg change from baseline, supine/sitting/standing SBP less than (<) 90 mm Hg; sitting diastolic BP (DBP) >=20 mm Hg change from baseline, sitting SBP =<20 mmHg change from baseline, supine/sitting/standing DBP <50 mm Hg; 2), pulse rate (supine): <40 or greater than (>) 120 beats per minute (bpm).

ECG criteria of potential clinical concern were 1), PR interval: >=300 milliseconds (msec); >=25% increase when baseline >200 msec; or increase >=50% when baseline <=200 msec; 2), QRS interval: >=140 msec; >=50% increase from baseline; 3), QTc interval using Fridericia's formula (QTcF interval): absolute value >=450 - <480 msec, >=480-<500 msec, >500 msec; absolute change 30 - <60, >=60 msec.

The PK parameters were summarized descriptively by treatment as appropriate. Two (2) PK parameters specified in the protocol and SAP were not reported: AUClast was not reported since it was the same as AUC24 in this study, and apparent volume of distribution (Vz/F) was not reported since the log-linear terminal phase of the concentration-time profiles was not consistently well characterized in the 24-hour sampling period.

The PK parameters were summarized descriptively by treatment as appropriate. Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed. Clearance was estimated from population PK modeling. Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood.

Cav was average concentration over the 24-hour period. The PK parameters were summarized descriptively by treatment as appropriate.

Cmax was highest observed concentration. The PK parameters were summarized descriptively by treatment as appropriate.

Cmin lowest observed concentration during the 24-hour period. The PK parameters were summarized descriptively by treatment as appropriate.

Tmax was time of maximum concentration. The PK parameters were summarized descriptively by treatment as appropriate.