Study of Apixaban for the Prevention of Thrombosis-related Events in Patients With Acute Medical Illness

VTE: nonfatal pulmonary embolism (PE), symptomatic deep vein thrombosis (DVT), or asymptomatic proximal DVT detected by ultrasound. VTE-related death: fatal PE or sudden death for which VTE could not be excluded as a cause. Intended Treatment Period=period that started on day of randomization: period ended (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; period ended (for not treated) 32 days after randomization. A bilateral compression ultrasound (CUS) was performed between Days 5 and 14 for detection of asymptomatic proximal DVT unless a symptomatic VTE was confirmed prior. CUS was also performed on Day 30 ± 2 except for those participants who had a confirmed symptomatic VTE or proximal asymptomatic DVT prior to that time. All efficacy events were adjudicated by the Independent Central Adjudication Committee (ICAC). Event rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Major bleeding was adjudicated by an ICAC using criteria from the International Society on Thrombosis and Hemostasis (ISTH) and was defined as acute clinically overt bleeding: associated with a fall in hemoglobin of 2 grams per deciliter (g/dL) or more, or leading to a transfusion of 2 or more units of packed red blood cells or 1000 milliliters (mL) or more of whole blood, or bleeding in a critical site or bleeding which is fatal. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Bleeding was adjudicated by an ICAC using criteria from the ISTH. CRNM bleeding: acute clinically overt bleeding compromising hemodynamics; leading to hospitalization; traumatic subcutaneous hematoma; intramuscular hematoma; epistaxis that lasted for more than 5 minutes, was repetitive or led to an intervention; spontaneous gingival bleeding; spontaneous hematuria; macroscopic gastrointestinal hemorrhage (including at least 1 episode of melena or hematemesis, if clinically apparent with positive results on a fecal occult-blood test); rectal blood loss. Treatment Period=includes measurements or events with onset from first dose of study drug through 2 days after the last dose of study drugs for bleeding endpoints. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Bleeding was adjudicated by an ICAC using criteria from the ISTH. Major bleeding: acute clinically overt bleeding: associated with a fall in hemoglobin of 2 g/dL or more, or leading to a transfusion of 2 or more units of packed red blood cells or 1000 mL or more of whole blood, or bleeding in a critical site or bleeding which is fatal. CRNM bleeding: acute clinically overt bleeding compromising hemodynamics; leading to hospitalization; traumatic subcutaneous hematoma; intramuscular hematoma; epistaxis that lasted for more than 5 minutes, was repetitive or led to an intervention; spontaneous gingival bleeding; spontaneous hematuria; macroscopic gastrointestinal hemorrhage; rectal blood loss. Treatment Period=onset from first dose of study drug through 2 days after last dose of study drugs. Incidence: Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Bleeding was adjudicated by an ICAC using criteria from the ISTH. Treatment Period=includes measurements or events with onset from first dose of study drug through 2 days after the last dose of study drugs, for bleeding endpoints. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Parenteral study drug=active or placebo enoxaparin. Parenteral treatment: started on the first dose of parenteral study drug and ended the day after the last dose of parenteral study drug. Key Secondary Efficacy population: all who received at least 1 dose of parenteral study drug and: (those without suspected VTE events during Parenteral Treatment) had an adjudicated evaluable ultrasound performed at the end of Parenteral Treatment; or (those with suspected VTE events during Parenteral Treatment) had those suspected VTE events adjudicated as non-events, and had an adjudicated evaluable ultrasound performed at the end of Parenteral Treatment; or had an adjudicated total VTE during Parenteral Treatment; or had an adjudicated VTE-related death during Parenteral Treatment. Event rate (%): n/N*100 (n=number with observation; N=total secondary efficacy evaluable participants).

Parenteral study drug=active or placebo enoxaparin. Parenteral treatment: started on the first dose of parenteral study drug and ended the day after the last dose of parenteral study drug. Secondary Efficacy Evaluable includes those who had an adjudicated, evaluable ultrasound at end of parenteral treatment and for those with a suspected symptomatic event, the result of the adjudication for the symptomatic event was not inadequate; or those with an adjudicated event that was part of the composite endpoint.. Event rate (%): n/N*100 (n=number with observation; N=total secondary efficacy evaluable participants).

Intended Treatment Period=period that starts on day of randomization: period ends (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; (for not treated) period ends 32 days after randomization. VTE: nonfatal (N-F) PE, symptomatic DVT, or asymptomatic proximal DVT detected by ultrasound. VTE-related death: fatal PE or sudden death for which VTE cannot be excluded as a cause. All-Cause Death (A-C Death). Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Events adjudicated by ICAC. Intended Treatment Period=period that starts on day of randomization: period ends (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; (for not treated) period ends 32 days after randomization. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Events adjudicated by ICAC. Intended Treatment Period=period that starts on day of randomization: period ends (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; (for not treated) period ends 32 days after randomization. VTE-related death: fatal PE or sudden death for which VTE cannot be excluded as a cause. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Events adjudicated by ICAC. Intended Treatment Period=period that starts on day of randomization: period ends (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; (for not treated) period ends 32 days after randomization. VTE-related death: fatal PE or sudden death for which VTE cannot be excluded as a cause. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Events adjudicated by ICAC. Intended Treatment Period=period that starts on day of randomization: period ends (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; (for not treated) period ends 32 days after randomization. VTE: nonfatal PE, symptomatic DVT, or asymptomatic proximal DVT detected by ultrasound. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Events adjudicated by ICAC. Intended Treatment Period=period that starts on day of randomization: period ends (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; (for not treated) period ends 32 days after randomization. VTE: nonfatal PE, symptomatic DVT, or asymptomatic proximal DVT detected by ultrasound. VTE-related death: fatal PE or sudden death for which VTE cannot be excluded as a cause. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Events adjudicated by ICAC. Intended Treatment Period=period that starts on day of randomization: period ends (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; (for not treated) period ends 32 days after randomization. VTE: nonfatal PE, symptomatic DVT, or asymptomatic proximal DVT detected by ultrasound. VTE-related death: fatal PE or sudden death for which VTE cannot be excluded as a cause. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Events adjudicated by ICAC. Intended Treatment Period=period that starts on day of randomization: period ends (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; (for not treated) period ends 32 days after randomization. PE: non-fatal or fatal. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Events adjudicated by ICAC. Intended Treatment Period=period that starts on day of randomization: period ends (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; (for not treated) period ends 32 days after randomization. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Events adjudicated by ICAC. Intended Treatment Period=period that starts on day of randomization: period ends (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; (for not treated) period ends 32 days after randomization. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Events adjudicated by ICAC. Intended Treatment Period=period that starts on day of randomization: period ends (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; (for not treated) period ends 32 days after randomization. A bilateral compression ultrasound (CUS) was performed between Days 5 and 14 for detection of asymptomatic proximal DVT unless a symptomatic VTE was confirmed prior. CUS was also performed on Day 30 ± 2 except for those participants who had a confirmed symptomatic VTE or proximal asymptomatic DVT prior to that time. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Events were adjudicated by ICAC. Intended Treatment Period=period that starts on day of randomization: period ends (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; (for not treated) period ends 32 days after randomization. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Events adjudicated by ICAC. Intended Treatment Period=period that starts on day of randomization: period ends (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; (for not treated) period ends 32 days after randomization. A bilateral compression ultrasound (CUS) was performed between Days 5 and 14 for detection of asymptomatic proximal DVT unless a symptomatic VTE was confirmed prior. CUS was also performed on Day 30 ± 2 except for those participants who had a confirmed symptomatic VTE or proximal asymptomatic DVT prior to that time. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

A bilateral compression ultrasound (CUS) was performed between Days 5 and 14 for detection of asymptomatic proximal DVT unless a symptomatic VTE was confirmed prior. CUS was also performed on Day 30 ± 2 except for those participants who had a confirmed symptomatic VTE or proximal asymptomatic DVT prior to that time. Events adjudicated by ICAC. Intended Treatment Period=period that starts on day of randomization: period ends (for treated) at latter of a) 2 days after last dose of study drug and b) 32 days after first dose of study drug; (for not treated) period ends 32 days after randomization. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants).

Treatment Period=includes measurements or events with onset from first dose of study drug through 2 days after the last dose of study drugs for AEs, and 30 days after last dose of study drugs for SAEs and deaths.

Diastolic blood pressure was obtained during Screening/Enrollment Visit (Day 1, prior to drug being administered), on the day of hospital discharge, Day 30 (last day of treatment) plus 2 days. Blood pressure was measured in millimeters of mercury (mmHg) and could have been taken with the participant either sitting, standing, or supine.

Systolic blood pressure was obtained during Screening/Enrollment Visit (Day 1, prior to drug being administered), on the day of hospital discharge, Day 30 (last day of treatment) plus 2 days. Blood pressure was measured in millimeters of mercury (mmHg) and could have been taken either sitting, standing, or supine.

Heart Rate was obtained during Screening/Enrollment Visit (Day 1, prior to drug being administered), on the day of hospital discharge, Day 30 (last day of treatment) plus 2 days. Heart rate was measured in beats per minute (bpm) and could have been taken with participants either sitting, standing, or supine.

Lower limit of normal (LLN). Upper limit of normal (ULN). Pre-therapy (PreRx). Absolute (Abs) neutrophil count, bands + neutrophils (ANC). Cells per microliter (c/µL). Grams per deciliter (g/dL). Cells per Liter (c/L). Millimeter (MM). Absolute (Abs). Hemoglobin: >2 g/dL decrease compared to PreRx value or value <=8 g/dL; Hematocrit: <0.75*PreRx; Erythrocytes: <0.75*PreRx c/µL; Leukocytes: <0.75*LLN or > 1.25*ULN, if PreRx <LLN then use <0.8*PreRx or >ULN, if PreRx >ULN then use >1.2*PreRx or < LLN; Platelet count: < 100*10^9 c/L; ANC: < 1.00*10^3 c/µL; Abs eosinophils: > 0.75*10^3 c/µL; Abs Basophils: > 400/MM^3; Abs Monocytes > 2000/MM^3; Abs Lymphocytes: < 0.750*10*3 c/ µL or > 7.5*10^3 c/ µL. Samples were obtained at Screening/Enrollment Visit (Day 1, prior to drug being administered), on the day of hospital discharge, Day 30 (last day of treatment) plus 2 days.

Bicarbonate milliequivalents/Liter (mEq/L) Low/High: < 0.75*LLN or > 1.25*ULN, or if PreRx < LLN then use < 0.75* PreRx or > ULN if PreRx > ULN then use > 1.25*PreRx or < LLN; Serum Calcium mg/dL Low/High: < 0.8*LLN or > 1.2*ULN, or if PreRx < LLN then use < 0.75*PreRx or > ULN if PreRx > ULN then use > 1.25*PreRx or < LLN; Serum Chloride mEq/L: < 0.9*LLN or > 1.1*ULN, or if PreRx < LLN then use < 0.9*PreRx or > ULN if PreRx > ULN then use > 1.1*PreRx or < LLN; Serum Potassium mEq/L: < 0.9*LLN or > 1.1*ULN, or if PreRx < LLN then use < 0.9*PreRx or > ULN if PreRx > ULN then use > 1.1*PreRx or < LLN; Serum Sodium mEq/L: < 0.95*LLN or > 1.05*ULN, or if PreRx < LLN then use < 0.95*PreRx or > ULN if PreRx > ULN then use > 1.05*PreRx or < LLN. Samples obtained at Screening/Enrollment Visit (Day 1, prior to drug being administered), on the day of hospital discharge, Day 30 (last day of treatment) plus 2 days.

Blood urea nitrogen (BUN), milligrams/deciliter (mg/dL), units per liter (U/L). BUN mg/dL > 1.5*ULN; Creatinine mg/dL: > 1.5*ULN; Alanine aminotransferase (ALT) U/L: > 3*ULN; Aspartate aminotransferase (AST) U/L: > 3*ULN; Alkaline phosphatase U/L: > 2*ULN; Bilirubin Direct mg/dL: > 1.5*ULN; Bilirubin Total mg/dL: > 2*ULN. Samples for laboratories obtained at Screening/Enrollment Visit (Day 1, prior to drug being administered), on the day of hospital discharge, Day 30 (last day of treatment) plus 2 days.

Creatine kinase High: >5*ULN Units/Liter (U/L); Total Protein High/Low: < 0.9 *LLN or > 1.1*ULN, or if PreRx < LLN then use 0.9* PreRx or > ULN if PreRx > ULN then use 1.1 *PreRx or <LLN; Uric acid High: > 1.5* ULN, or if PreRx > ULN then use > 2 *PreRx. Glucose Fasting: <0.9*LLN or > 1.5*ULN or if PreRx < LLN then use < 0.8*PreRx or > ULN, if PreRx > ULN then use >2.0*PreRx. Samples obtained at Screening/Enrollment Visit (Day 1, prior to drug being administered), on the day of hospital discharge, Day 30 (last day of treatment) ± 2days.

Events of Special Interest include: adjudicated thrombocytopenia, adjudicated myocardial infarction (MI), adjudicated stroke, and adjudicated MI or stroke. Incidence determined by Event Rate (%): n/N*100 (n=number with observation; N=total efficacy evaluable participants). Treatment Period includes measurements or events with onset from first dose of study drug through 2 days after the last dose of study drugs.

Special interest include: liver function test increases, AEs related to liver function, and neurologic AEs. Treatment Period includes measurements or events with onset from first dose of study drug through 2 days after the last dose of study drug when summarizing AEs and through 30 days after the last dose when summarizing SAEs.

Liver function tests: Alanine aminotransferase (ALT) U/L; Aspartate aminotransferase (AST) U/L; Alkaline phosphatase U/L; Total Bilirubin (TBili) mg/dL. Elevations consist of >3*Upper Limit of Normal (ULN) for ALT and AST and elevation of >2*ULN for Bilirubin.