Drug Interaction Study of Saxagliptin in Combination With Dapagliflozin in Healthy Participants

Serial blood samples for determination of study drug were collected predose (0 h), 6 h, 12 h, 18 h, 24 h, 30 h, 36 h, 42 h, 48 h, 54 h and 60 h postdose, relative to dosing on Day 1 in each cross over period. Plasma samples were analyzed for dapagliflozin by HPLC-MS/MS using a validated method. Actual sampling times were used for PK calculations. Tmax was derived from the plasma concentration versus time profile using a validated PK analysis program ™ and was measured in hours.

Serial blood samples for determination of study drug were collected predose (0 h), 6 h, 12 h, 18 h, 24 h, 30 h, 36 h, 42 h, 48 h, 54 h and 60 h postdose, relative to dosing on Day 1 in each cross over period. Plasma samples were analyzed for dapagliflozin by HPLC-MS/MS using a validated method. Actual sampling times were used for PK calculations. T-HALF was derived from the plasma concentration versus time profile using a validated PK analysis program ™ and was measured in hours.

Serial blood samples for determination of study drug were collected predose (0 h), 6 h, 12 h, 18 h, 24 h, 30 h, 36 h, 42 h, 48 h, 54 h and 60 h postdose, relative to dosing on Day 1 in each cross over period. Plasma samples were analyzed for dapagliflozin by HPLC-MS/MS using a validated method. Actual sampling times were used for PK calculations. CLT/F was calculated as Dose/AUC(INF)and was measured in milliliters per minute (mL/min).

Serial blood samples for determination of study drug were collected predose (0 h), 6 h, 12 h, 18 h, 24 h, 30 h, 36 h, 42 h, 48 h, 54 h and 60 h postdose, relative to dosing on Day 1 in each cross over period. Plasma samples were analyzed for 5-OH by LC-MS/MS using a validated method (quantitation range of 0.200 ng/mL to 100.0 ng/mL). Actual sampling times were used for PK calculations. Cmax for 5-OH Saxagliptin (the major active metabolite of Saxagliptin) was derived from plasma concentration versus time data using a validated PK analysis program ™ and was measured in ng/mL.

Serial blood samples for determination of study drug were collected predose (0 h), 6 h, 12 h, 18 h, 24 h, 30 h, 36 h, 42 h, 48 h, 54 h and 60 h postdose, relative to dosing on Day 1 in each cross over period. Plasma samples were analyzed for 5-OH by LC-MS/MS using a validated method (quantitation range of 0.200 ng/mL to 100.0 ng/mL). AUC(0-T) is area under the plasma concentration-time curve from time 0 to the time of the last quantifiable concentration (linear up/log down trapezoidal method)and was derived from the plasma concentration versus time profile for study drug using a validated PK analysis program ™. AUC (0-T) was measured in nanograms*hours per milliliter (ng*h/mL).

Serial blood samples for determination of study drug were collected predose (0 h), 6 h, 12 h, 18 h, 24 h, 30 h, 36 h, 42 h, 48 h, 54 h and 60 h postdose, relative to dosing on Day 1 in each cross over period. Plasma samples were analyzed for 5-OH by LC-MS/MS using a validated method (quantitation range of 0.200 ng/mL to 100.0 ng/mL). AUC(INF) was derived from the plasma concentration versus time profile using a validated PK analysis program ™ and was measured in nanograms*hours per milliliter (ng*h/mL).

Serial blood samples for determination of study drug were collected predose (0 h), 6 h, 12 h, 18 h, 24 h, 30 h, 36 h, 42 h, 48 h, 54 h and 60 h postdose, relative to dosing on Day 1 in each cross over period. Cmax of saxagliptin total active moiety (molar summations of saxagliptin exposure parameter with one-half the molar exposure parameters for 5-OH Saxagliptin) was derived from the plasma concentration versus time profile for the saxagliptin total active moiety. Measurement was in nano Molars (nM).

Serial blood samples for determination of study drug were collected predose (0 h), 6 h, 12 h, 18 h, 24 h, 30 h, 36 h, 42 h, 48 h, 54 h and 60 h postdose, relative to dosing on Day 1 in each cross over period. Plasma samples were analyzed for saxagliptin by LC-MS/MS using a validated method. AUC(INF) is area under the plasma concentration-time curve from time zero extrapolated to infinity; AUC(0-T) is area under the plasma concentration-time curve from time 0 to the time of the last quantifiable concentration (linear up/log down trapezoidal method) and both were derived from the plasma concentration versus time profile using a validated PK analysis program ™. Total moiety (molar summations of saxagliptin exposure parameter with one-half the molar exposure parameters for 5-OH Saxagliptin), AUC(0-T)and AUC(INF) were measured in nano Molars*hours (nM*h).

Serial blood samples for determination of study drug were collected predose (0 h), 6 h, 12 h, 18 h, 24 h, 30 h, 36 h, 42 h, 48 h, 54 h and 60 h postdose, relative to dosing on Day 1 in each cross over period. Plasma samples were analyzed for saxagliptin and 5-OH by LC-MS/MS using a validated method. Tmax was derived from the plasma concentration versus time profile for study drug and was measured in hours (h). Saxagliptin was the drug, 5-OH saxagliptin was the metabolite, and Saxagliptin total Active Moiety was molar summations of saxagliptin exposure parameter with one-half the molar exposure parameters for 5-OH Saxagliptin.

Serial blood samples for determination of study drug were collected predose (0 h), 6 h, 12 h, 18 h, 24 h, 30 h, 36 h, 42 h, 48 h, 54 h and 60 h postdose, relative to dosing on Day 1 in each cross over period. Plasma samples were analyzed for saxagliptin by LC-MS/MS using a validated method. T-HALF was derived from the plasma concentration versus time profile using a validated PK analysis program ™ and was measured in hours (h).

Serial blood samples for determination of study drug were collected predose (0 h), 6 h, 12 h, 18 h, 24 h, 30 h, 36 h, 42 h, 48 h, 54 h and 60 h postdose, relative to dosing on Day 1 in each cross over period. Saxagliptin is the parent drug and 5-OH saxagliptin is the metabolite. The molecular weights to be used for the molar ratios were 315.42 and 331.42 for saxagliptin and 5-OH, respectively. Plasma samples were analyzed for saxagliptin and for 5-OH by LC-MS/MS using a validated method (quantitation range of 0.100 ng/mL to 50.0 ng/mL and 0.200 ng/mL to 100.0 ng/mL for saxagliptin and 5-OH, respectively).

Adverse event (AE)=any new unfavorable symptom, sign, or disease or worsening of a preexisting condition that may not have a causal relationship with treatment. Serious adverse event (SAE)=a medical event that at any dose results in death, persistent or significant disability/incapacity, or drug dependency/abuse; is life-threatening, an important medical event, or a congenital anomaly/birth defect; or requires or prolongs hospitalization. Treatment-related=having certain, probable, possible, or missing relationship to study drug. Grade (Gr) 1=Mild, Gr 2=Moderate, Gr 3=Severe, Gr 4=Life-threatening or disabling, Gr 5=Death. End of study was approximately 16 days and was the time for a participant to conclude each of the 3 periods (including the 6 day washout between periods).

Fasted for 10 hours prior to samples taken. Baseline was Day -1 of Period 1; study drug was administered on Day 1 of each crossover period. Lower limit of normal (LLN); upper limit of normal (ULN); pretreatment(pre-RX); treatment (RX). Hemoglobin (g/L): <0.85* pre-RX; hematocrit (vol): <0.85*pre-RX; erythrocytes (*10^12 c/L): <0.85*pre-RX; platelet count (*10^9 c/L): <0.85*LLN if pre-RX>=LLN, or if Pre-Tx <LLN; leukocytes (*10^9 c/L): <0.85*LLN if pre-RX <LLN,or <0.9*LLN if LLN<=Pre-RX<=ULN; neutrophils+bands (*10^9 c/L): <0.85*Pre-RX if Pre-RX <1.5 or <1.5 if Pre-RX >=1.5; eosinophils (*10^9 c/L): if value >0.75; basophils (*10^9 c/L): if value >0.4; monocytes (*10^9c/L): if value >2; lymphocytes (*10^9 c/L): if value <0.750 or if value >7.50.

Blood pressure was taken while the participant was quietly seated for at least 5 minutes. Blood pressure was measured in millimeters of mercury (mmHg). Baseline was Day -1 in Period 1; study drug was administered on Day 1 of each crossover period.

Heart rates were taken while the participant was sitting quietly for at least 5 minutes and were measured in beats per minute (bpm). Baseline was Day -1 of Period 1; study drug was administered on Day 1 of each crossover period.

Respiration rates were taken while the participant was sitting quietly for at least 5 minutes and were measured in breaths per minute (bpm). Baseline was Day -1 of Period 1; study drug was administered on Day 1 of each crossover period.

Participant had their temperature taken after quietly sitting for at least 5 minutes and it was measured as degrees of centigrade (C). Baseline was Day -1 of Period 1; study drug was administered on Day 1 of each crossover period.

Fasted for 10 hours prior to samples taken. Baseline was Day -1 of Period 1; study drug was administered on Day 1 of each crossover period. Lower limit of normal(LLN); upper limit of normal (ULN); pre-treatment(Pre-Rx). Alkaline phosphatase U/L:>1.25*Pre-RX if Pre-Rx >ULN or >1.25*ULN if Pre-Rx <=ULN; aspartate aminotransferase (AST) U/L: >1.25*Pre-Rx if Pre-Rx > ULN or 1.25*ULN if Pre-Rx <= ULN;alanine aminotransferase (ALT) U/L: >1.25*Pre-Rx if Pre-Rx>ULN or 1.25*ULN if Pre-Rx<=ULN;blood urea nitrogen (BUN)mmol/L: >1.1*ULN if Pre-Rx <=ULN or >1.2*Pre-Rx if Pre-Rx >ULN; total bilirubin µmol/L: >1.1*ULN if Pre-Rx <=ULN or >1.25*Pre-Rx if Pre-Rx >ULN;direct bilirubin µmol/L: >1.1*ULN if Pre-Rx <= ULN or >1.25*Pre-Rx if Pre-Rx > ULN; creatine phosphokinase (CK) U/L: >1.5*Pre-Rx if Pre-Rx >ULN or >1.5*ULN if Pre-Rx <= ULN.

Baseline was Day -1 of Period 1; study drug was administered on Day 1 of each crossover period. Fasted for 10 hours prior to samples taken. LLN=lower limit of normal; ULN=upper limit of normal; pretreatment (Pre-Rx). Normals: Urine glucose qualitative: dipstick >=1 if Pre-Rx <1 or 2*Pre-Rx if Pre-Rx>=1; urine microscopic white blood cell count (WBC): >=2 if Pre-Rx <2 or >=4 if Pre-Rx >=2;urine red blood cell count (RBC):>=2 if Pre-Rx <2 or >=4 if Pre-Rx >=2.

A 12-Lead electrocardiogram (ECG) was performed and recorded after the participant had been supine for at least 5 minutes. ECGs done at baseline (Day-1 of Period 1) and at end of study; therefore the results are presented by sequence, and cannot be presented by treatment. QT interval (measure between Q wave and T wave in the heart's electrical cycle); and QT interval corrected for heart rate using Fridericia's formula (QTcF) were measured in milliseconds (msec). Abnormality criteria: QT/QTcF QT or QTcF >450 msec and <=480 msec at any postdose time point and not present at baseline. QT or QTcF >480 msec and <=500 msec at any postdose time point and not present at baseline QT or QTcF >500 msec at any postdose time point and not present at baseline. QT/QTcF Increase from baseline >60 msec for at least 1 postdose measurement. Increase from baseline in QT or QTcF >30 msec for at least 1 postdose measurement, but <=60 msec for all postdose measurements.