Confidential CLINICAL PROTOCOL Sponsor Name Protocol Title Protocol Number Protocol Date Version Number Amendment Number IND Number NDA Number Primary Author Contributing Authors Best Pharmaceutical, Inc Multi-Center, Randomized, Double-Blind, Placebo-Controlled Study Comparing the Safety and Effectiveness of Drug A 20 mg Once Daily Versus Placebo Using 24-Hour Ambulatory Blood Pressure Monitoring In Patients With mild to moderate ABC01 27March2007 Final 1.0 0 999,999 Not applicable Best Protocol Author, MD Best SAP Author, PhD Best CSR Author, MD Drug Name Phase of Development Indication Drug A III Mild to moderate hypertension Study Sponsor: Best Pharmaceutical, Inc. Wonderful Road, Suite 909 Rockville, MA 20850 Phone: 999-999-9999 Fax: 999-999-8888 Web: www.bestpharma.com CONFIDENTIAL This document is a confidential communication of the Sponsor. Acceptance of this document constitutes the agreement by the recipient that no unpublished information contained herein will be published or disclosed without prior written approval. Page 1 of 35 Protocol: ABC01 Final V1.0 Confidential Protocol Signature Page Best Pharmaceutical, Inc Protocol ABC01 Original Approval Date: March XX, 2007 A Multi-Center, Randomized, Double-Blind, Placebo-Controlled Study Comparing the Safety and Effectiveness of Drug A 20 mg Once Daily Versus Placebo Using 24-Hour Ambulatory Blood Pressure Monitoring (ABPM) In Patients with Mild to Moderate Hypertension Protocol Final Version 1.0 Approval This protocol has been verified and approved by: _____________________________________________ <name and degree> <title> __________________ Date <company> ______________________________________________ <name and degree> <title> __________________ Date <company> ______________________________________________ <name and degree> <title> __________________ Date <company> Page 2 of 35 Protocol: ABC01 Final V1.0 Confidential TABLE OF CONTENTS Protocol Signature Page .................................................................................................................... 2 List of Abbreviations ......................................................................................................................... 5 1. PROTOCOL SYNOPSIS .............................................................................................................. 6 2. Background Information ............................................................................................................... 9 2.1 Background ......................................................................................................................... 9 2.2 Study Rationale ................................................................................................................... 9 2.3 Toxicity and Pre-clinical experience ................................................................................... 9 2.4 Clinical experience .............................................................................................................. 9 2.5 Summary of Potential Risks and Benefits ........................................................................... 9 3. Study Objectives ......................................................................................................................... 10 3.1 Primary objectives............................................................................................................. 10 3.2 Secondary objectives ......................................................................................................... 10 4.0 Study Design ............................................................................................................................. 11 4.1 Study Endpoints ................................................................................................................ 11 4.2 Overall Study Design ........................................................................................................ 11 4.3 Randomization/Blinding Procedure .................................................................................. 11 4.4 Stopping Rules .................................................................................................................. 11 4.5 Maintenance of Randomization Codes and Procedure for Breaking Codes ..................... 12 5.0 Study Population ....................................................................................................................... 14 5.1 Inclusion Criteria............................................................................................................... 14 5.2 Exclusion Criteria ............................................................................................................. 14 6.0 Investigational Medicine Products ............................................................................................ 16 6.1 Study Treatment ................................................................................................................ 16 6.2 Concomitant Medications and Prohibited Medications .................................................... 16 7.0 Study Procedures....................................................................................................................... 18 7.1 Visit 1 (Week -4, Screening) ............................................................................................. 18 7.2 Visit 2 (Week -3, Placebo Run-in)..................................................................................... 18 7.3 Visit 3 (Week -2, Placebo Run-in)..................................................................................... 19 7.4 Visit 4 (Week -1, Placebo Run-in)..................................................................................... 19 7.5 Visit 5 (Week 0 Baseline) or Visit 4A (Week -1A Placebo Run-In) .................................. 19 7.6 Visit 6 (Week 0, Baseline/Randomization) ....................................................................... 20 7.7 Visit 7 (Week 2, Double-Blind Treatment)........................................................................ 20 7.8 Visit 8 (Week 4, Double-Blind Treatment)........................................................................ 21 7.9 Visit 9 (Week 6 End of Study/Early Termination)............................................................. 21 7.10 Visit 10 (Week 6 End of Study/Early Termination)......................................................... 21 8.0 Clinical Assessment .................................................................................................................. 23 8.1 12-lead Electrocardiogram ................................................................................................ 23 8.2 Physical Examination ........................................................................................................ 23 8.3 Pregnancy Test and ........................................................................................................... 23 8.4 Laboratory Assessments .................................................................................................... 23 8.5 Office Blood Pressure and ABPM Measurements ............................................................ 24 9.0 Safety Assessment ..................................................................................................................... 25 Page 3 of 35 Protocol: ABC01 Final V1.0 Confidential 9.1 Adverse Event and AE reporting ....................................................................................... 25 10.0 Statistical Consideration and Analysis .................................................................................... 26 10.1 General Statistical Method .............................................................................................. 26 10.2 Analysis Population......................................................................................................... 26 10.3 Subject Disposition ......................................................................................................... 26 10.4 Demographic and Baseline Characteristics ..................................................................... 26 10.5 Protocol Deviation .......................................................................................................... 27 10.6 Efficacy Analysis ............................................................................................................ 27 10.7 Safety Analysis ................................................................................................................ 27 10.8 Sample Size Estimation/Justification .............................................................................. 27 11.0 Ethics....................................................................................................................................... 28 12.0 Data Handling and Record Keeping ....................................................................................... 29 13.0 Financing and Insurance ......................................................................................................... 30 14.0 Publication Policy ................................................................................................................... 31 15.0 Reference List ......................................................................................................................... 32 APPENDIX A Schedule of Study Evaluations........................................................................... 33 APPENDIX B Blood Pressure Measurement: Office and Ambulatory Blood Pressure Monitoring ........................................................................................................................................................ 34 Page 4 of 35 Protocol: ABC01 Final V1.0 Confidential List of Abbreviations Ambulatory Blood Pressure Monitoring ABPM Adverse Event AE Blood Pressure BP Case Report Form CRF Diastolic Blood Pressure DBP Eelectrocardiogram ECG Last observation carried forward LOCF Systolic Blood Pressure SBP … … Page 5 of 35 Protocol: ABC01 Final V1.0 Confidential 1. PROTOCOL SYNOPSIS Protocol Number: Title: Indication: Objectives: Study Design: Treatments: Procedures/Visits: Study Population: Efficacy Measures: ABC01 A Multi-Center, Randomized, Double-Blind, Placebo-Controlled Study Comparing the Safety and Effectiveness of Drug A 20 mg Once Daily Versus Placebo Using 24-Hour Ambulatory Blood Pressure Monitoring (ABPM) In Patients with Mild to Moderate Hypertension. Mild to moderate hypertension. 1. The primary objective of the study is to compare the antihypertensive effectiveness using change from Baseline in mean seated office cuff diastolic blood pressure of Drug A 20 mg once daily to placebo. 2. The secondary objective is to evaluate the safety of low-dose Drug A compared to placebo and change from Baseline at Week 6 or end of study in mean 24-hour and mean daytime ambulatory Diastolic Blood Presssure (from time of dosing until 8:00PM) as measured by ABPM. The study will employ a randomized, double-blind design in patients with mild to moderate hypertension. The study includes a 3- to 4-week single-blind placebo run-in phase and a 6-week double-blind treatment phase. All patients will receive placebo tablets once daily for 3 – 4 weeks during the single-blind, run-in phase. During the double-blind treatment phase, patients will be randomized in a 1:1 ratio to receive either Drug A 20 mg or placebo tablets once daily for 6 weeks. Study visits will be scheduled to fit within the window for trough blood pressure (BP) measurements (i.e., prior to next dose and between 22–26 hours after previous dose [24±2 hours]). Approximately 300 patients at approximately 10 sites will be enrolled into the placebo run-in phase. It is expected that 20% of patients will not qualify for randomization based on office BP entry criteria and an additional 25% of patients will not qualify based on ABPM entry criteria. The study will randomize approximately 180 patients into the double-blind treatment. The study population will include males and females ≥ 18 years of age with mild to moderate hypertension (defined as a seated diastolic blood pressure (DBP) ≥ 95 mmHg and ≤ 110 mmHg). Primary Endpoint: The primary efficacy endpoint is the change from Baseline in mean seated office cuff DBP (24±2 hours) at Week 6 or end of study. Secondary Endpoints: Page 6 of 35 Protocol: ABC01 Final V1.0 Confidential Safety Measures: Statistical Analysis: Change from Baseline in seated office systolic blood pressure (SBP) at Weeks 2, 4, 6 or end of study and DBP at Weeks 2 and 4 or end of study, Change from Baseline to Week 6 or end of study in mean 24-hour and mean daytime ambulatory DBP (time of dose until 8:00 PM) as measured by ABPM, Change from Baseline to Week 6 or end of study in mean 24-hour and mean daytime (time of dose until 8:00 PM) ambulatory SBP as determined by ABPM, Proportion of patients with seated office cuff DBP reduced > 4 mmHg from baseline at Week 6 or end of study, Proportion of patients who are normalized by office BP measurements (defined as a trough seated SBP <135 mmHg and/or DBP <85 mmHg at Week 6 or end of study), and Proportion of patients with a reduction in ambulatory mean 24-hour DBP > 10 mmHg from baseline at Week 6 or end of study. Patient safety will be assessed by monitoring and reporting of adverse events (AE) that occur during the study. Further safety assessments will include physical examinations, 12-lead electrocardiogram (ECG), and clinical laboratory tests. Efficacy analyses will be conducted for two populations: Modified Intent-to-Treat (ITT) and Per Protocol (PP). Descriptive statistics will be presented for the observed blood pressure values, but analysis will be performed on change from baseline. Change from baseline will be calculated as BPt – BP0 where BPt is defined as the blood pressure measurement obtained at time = t (Week 2, 4, or 6) and BP0 is the baseline blood pressure (Randomization, Week 0). The primary efficacy endpoint is the change from Baseline in mean seated office cuff DBP (24±2 hours) at Week 6 or end of study. The primary analysis is the comparison of the two treatment groups using the ITT and PP populations. Secondary efficacy analyses will be conducted for the ITT and PP populations. In addition, analyses for change from baseline for the primary efficacy endpoint will be presented in both ITT and PP populations, examining the effect of race (Caucasian versus Non-Caucasian), gender (male versus female), and age (< 65 years versus ≥65 years) at Week 6 or end of study. These subgroup analyses by demographics will be performed for the primary efficacy endpoint but not for the secondary efficacy endpoints. For analyses conducted on efficacy results obtained at the various scheduled visits, missing values in the ITT population will be imputed using the last observation carried forward (LOCF) method except for mean ambulatory SBP and DBP by ABPM. Page 7 of 35 Protocol: ABC01 Final V1.0 Confidential Continuous efficacy endpoints (e.g., change from baseline in seated and standing systolic and diastolic office blood pressures) will be compared across treatment groups using a fixed-effect two-way analysis of variance (ANOVA) with center and treatment as factors. Categorical response variables (e.g., proportion of normalized patients with SBP <135 mmHg and/or DBP<85 mmHg) will be compared using the Cochran-Mantel-Haenszel test stratified by center. Page 8 of 35 Protocol: ABC01 Final V1.0 Confidential 2. Background Information 2.1 Background <placeholder> 2.2 Study Rationale <placeholder> 2.3 Toxicity and Pre-clinical experience <placeholder> 2.4 Clinical experience <placeholder> 2.5 Summary of Potential Risks and Benefits <placeholder> Page 9 of 35 Protocol: ABC01 Final V1.0 Confidential 3. Study Objectives The objective of this study is to evaluate the safety and effectiveness of Drug A 20 mg once daily versus placebo using 24-hour Ambulatory Blood Pressure Monitoring (ABPM) in patients with mild to moderate hypertension. 3.1 Primary objectives The primary objective of the study is to compare the antihypertensive effectiveness using change from Baseline in mean seated office cuff diastolic blood pressure of Drug A 20 mg once daily to placebo. 3.2 Secondary objectives The secondary objective is to evaluate the safety of low-dose Drug A compared to placebo and change from Baseline at Week 6 or end of study in mean 24-hour and mean daytime ambulatory DBP (from time of dosing until 8:00PM) as measured by ABPM. Page 10 of 35 Protocol: ABC01 Final V1.0 Confidential 4.0 Study Design 4.1 Study Endpoints 4.1.1 Efficacy Endpoints <see the protocol synopsis> 4.1.2 Safety Endpoints <see the protocol synopsis> 4.2 Overall Study Design The study is a phase III, prospective, randomized, double-blind, placebo-controlled clinical trial to evaluate the safety and effectiveness of Drug A 20 mg once daily versus placebo using 24-hour Ambulatory Blood Pressure Monitoring (ABPM) in patients with mild to moderate hypertension. The study includes a 3- to 4-week single-blind placebo run-in phase and a 6-week double-blind treatment phase. The study will receive approval from the institutional review board (IRB)/ethics committee (EC) at each site and will be conducted in accordance with the principles outlined in the Declaration of Helsinki. Written informed consent will be obtained from all subjects. This study will be at 20 sites in Europe, North America and Asian Pacific. 4.3 Randomization/Blinding Procedure A centralized, center-blocked randomization procedure will be used for treatment assignment by means of an Interactive Voice Response System (IVRS). Subjects will be randomized 1:1 into 2 groups (Drag A n=90, placebo n=90). Subjects and study personnel will be blinded to treatment groups (active study drug vs. placebo). 4.4 Stopping Rules 4.4.1 Subject Withdrawal A subject (or subject's legal guardian) is free to withdraw consent and discontinue participation in the study at any time, without prejudice to further treatment according to standard practice. If a subject becomes pregnant, or is discovered to be pregnant, during study participation, the Sponsor should be notified. A detailed, comprehensive medical review (for the subject and fetus) Page 11 of 35 Protocol: ABC01 Final V1.0 Confidential will be conducted prior to continuing or discontinuing study participation. Pregnancy will not be considered an SAE. If a subject’s participation in the study is terminated early, all available data, including the incidence of AEs and the reason for discontinuation, will be recorded on the Case Report Form (CRF). If a serious adverse event (SAE) occurs within 30 days after the last study dose, the investigator should follow the SAE until the event is resolved or the subject is lost to follow-up. Resolution means the subject has returned to the baseline state of health or the condition is stable and the Investigator does not expect any further improvement or worsening of the adverse event. In all cases, the appropriate information will be recorded on the CRF. 4.4.2 Sponsor or Investigator Withdrawal Any of the following are considered reason for the Investigator to remove a subject from the study: The subject is uncooperative/non-compliant and will not or cannot adhere to study responsibilities, including all eligible study visits The subject was erroneously enrolled in the study The subject suffers an intolerable AE The sponsor terminates the study. A subject's participation in the study may be discontinued at any time at the discretion of the Investigator. If the Sponsor, an Investigator, or a regulatory agency discovers a condition during the study to indicate that the study or site should be terminated, this action may be taken after appropriate consultation between the Sponsor and the Investigator. Conditions that might warrant termination of the study include, but are not limited to the following criteria. The discovery of an unexpected, serious, or unacceptable risk to a subject enrolled in the study The decision on the part of the Sponsor to suspend or discontinue testing, evaluation, or development of the study drug Failure of the Investigator to comply with pertinent regulatory authority regulations Submission of knowingly false information from the research facility to the Sponsor, or other regulatory authority Insufficient adherence to protocol requirements 4.5 Maintenance of Randomization Codes and Procedure for Breaking Codes Unblinding of treatment assignment during the study is discouraged and should occur only if it is absolutely necessary to identify treatment assignment in an emergency situation due to an adverse event (AE). If the Investigator deems identification of the study medication as necessary for the purpose of providing urgent subject care, unblinding should proceed and the Sponsor’s Chief Medical Officer and/or PI should be notified. Every effort should be made to contact the Page 12 of 35 Protocol: ABC01 Final V1.0 Confidential Sponsor’s Chief Medical Officer and/or PI prior to unblinding. If this is not possible, then the Investigator can proceed with determining the study medication assignment by using the Interactive Voice Response System and monitor as soon as possible. Note: Causality should be assessed by the Investigator prior to unblinding of treatment assignment but must not delay treatment in an emergency situation. The date and reason for the unblinding must be recorded in the subject’s medical record and on the subject’s CRF. Page 13 of 35 Protocol: ABC01 Final V1.0 Confidential 5.0 Study Population A total of 180 eligible subjects will be randomized to the Drug A or placebo treatment groups. 5.1 Inclusion Criteria Patients will be eligible to participate in this study after the nature and purpose of the protocol have been explained to them and appropriate informed consent has been obtained. The confirmation of the informed consent before the patient's participation in the study will be documented in source documents and on the Case Report Form (CRF). The presence of inclusion criteria and the absence of exclusion criteria will be verified on the CRF and patient eligibility for study participation must be documented in source documents. Patients must meet all of the following criteria in order to be randomized into the trial: 1. Patients must be males or females ≥ 18 years of age. 2. Patients must have a history of Stage I to Stage II hypertension (defined as a seated DBP ≥ 95 mmHg and ≤ 110 mmHg at Baseline-Week 0). 3. Patients must be able to communicate effectively with the study personnel. 4. Patients must be adequately informed of the nature and risks of the study and give written informed consent prior to screening. 5. Patients must be ambulatory and able to maintain a normal daily activity schedule. 6. Patients must have a mean 24-hour ambulatory diastolic blood pressure (DBP) ≥85 and ≤105 mmHg as determined by ABPM at the end of the Baseline (Visit 6). 7. Patients must have a mean seated diastolic blood pressure ≥95 and ≤110 mmHg at the end of the baseline (Visit 6). 8. Patients under treatment for hypertension must be willing and able to discontinue all previous anti-hypertensive medications for the duration of the study. 9. Women of childbearing potential must be using a medically acceptable form of birth control for the duration of the trial, must have a negative serum pregnancy test at screening, and must have a negative urine pregnancy test prior to randomization (Visit 6). 5.2 Exclusion Criteria Patients may not be selected if any of the following criteria exist: 1. Patients who have a known hypersensitivity or allergy to metoprolol tartrate or vehicle components. 2. Patients who have insulin-dependent or uncontrolled Diabetes Mellitus (glycosolated hemoglobin >9%) or hypoglycemia. 3. Systolic blood pressure > 179 mmHg either at the screening visit or at the end of the single-blind placebo run-in phase of the study as measured by “office” cuff pressure. 4. Difference >10 mmHg in office measured mean diastolic blood pressures between any two Page 14 of 35 Protocol: ABC01 Final V1.0 Confidential 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. office visits during the run-in phase of the study. Patients who have hypertension secondary to a disease or condition or who have a history of malignant hypertension including retinal hemorrhages, exudates and papilledema. Patients who have an AV block greater than first degree including sick sinus syndrome. Patients who have chronic atrial fibrillation or recurrent tachyarrhythmia Patients who have significant bradycardia defined as a resting heart rate < 50 beats per minute (bpm). Patients who have clinically significant aortic or mitral valve disease. Patients with target organ damage or clinical cardiovascular disease that would preclude their safe inclusion in a placebo-controlled trial. This would include unstable angina pectoris, previous myocardial infarction or CVA in the last 6 months, congestive heart failure, transient ischemic attack (TIA). Patients who have severe peripheral vascular disease Patients with significant thyroid, renal or hepatic disease [TSH > 1.5 times upper limit of normal, urine protein >1+, creatinine >2.2 mg/dL, AST (SGOT) and/or ALT (SGPT) greater than twice the upper limit of normal]. Patients who perform alternate shift or night work Patients with arm circumference >42 cm (ABPM Cuff) Patients with any history of alcohol abuse, illicit drug use, significant mental illness, physical dependence to any opioid in the past year, or any history of drug abuse or addiction in the past year. Patients who have a history or presence of bronchospastic disease (e.g., asthma, chronic obstructive pulmonary disorder [COPD]). Women who are pregnant or breast-feeding, or who are not using or are not willing to use a medically accepted method of birth control. Patients who have received an investigational drug or device within a period of 30 days prior to enrollment (Visit 2) in the study. Patients who require concurrent use of prohibited prescription (Rx) or over-the-counter (OTC) medications. Patients who have previously participated in a study of the Sponsor’s metoprolol tartrate ER tablets. Patients who, in the opinion of the Investigator, have any other medical condition which renders the patient unable to complete the study or which would interfere with optimal participation in the study or produce significant risk to the patient. Patients participating in or planning to enroll in a weight reduction program during the time of the study Page 15 of 35 Protocol: ABC01 Final V1.0 Confidential 6.0 Investigational Medicine Products 6.1 Study Treatment 6.1.1 Study Treatment Administration All patients will receive placebo tablets once daily for 3 – 4 weeks during the single-blind, run-in phase. During the double-blind treatment phase, patients will be randomized in a 1:1 ratio to receive either Drug A 20 mg or placebo tablets once daily for 6 weeks. 6.1.2 Interruption of Study Treatment Interruption of treatment is not permitted. The dosage cannot be reduced, and, if a patient cannot tolerate the dose, he or she will be discontinued from the study. 6.1.3 Study Treatment Compliance The investigational medication will be counted to assess compliance at each visit. Patients who take = 80% of the prescribed doses will be considered compliant. Patients who fall below this threshold will be counseled and re-instructed on dosing procedures. If a patient is chronically non-compliant (i.e. takes <80% of prescribed dose at two consecutive visits), the patient will be asked to terminate from the study. Medication compliance will be recorded on the CRF for each visit. 6.2 Concomitant Medications and Prohibited Medications 6.2.1 Allowed Medications Patients will be allowed to take acetaminophen, antacids, low-dose aspirin or nonsteroidal anti-inflammatory drug (NSAID) therapy, hydroxymethyl glutaryl coenzyme A (HMG CoA) reductase inhibitors, antibiotics, and other drugs considered medically necessary by the Investigator. 6.2.2 Prohibited Medications Prohibited medications include the following: • All anti-hypertensive drugs; nitrates or other vasodilators; betablockers (including ophthalmic); are prohibited prior to entry into the single-blind run-in phase • MAO Inhibitors • Theophylline or beta-agonists • Steroids, not including topical steriods • Bile acid-binding resins; • High-dose NSAID or aspirin therapy (defined as doses required treating arthritis) • Herbal, Rx, OTC, and/or dietary supplements containing ephedra and other sympathomimetic amines Page 16 of 35 Protocol: ABC01 Final V1.0 Confidential • Potassium supplements • Investigational drugs (beginning 30 days prior to enrollment and continuing through the duration of the trial) 6.2.3 Restricted Medications • Total daily dose of aspirin cannot exceed 162 mg. • Use of decongestants and antihistamines containing decongestants within two (2) days before any visit is prohibited. • Use of Selective Serotonin Reuptake Inhibitors (SSRI) is permitted if the patient is on a stable dose of the SSRI for at least three (3) months prior to Screening, is known to be compliant with his/her medication, and agrees to maintain their current stable dose of the SSRI for the duration of the study • Use of Tricyclic antidepressants (TCA) is permitted if the patient is on a stable dose of the TCA for at least three (3) months prior to Screening, is known to be compliant with his/her medication, and agrees to maintain their current stable dose of the TCA for the duration of the study. • Chronic use of large doses of non-steroidal anti-inflammatory drugs (NSAIDs) is not permitted for the duration of this trial. • Use of medications for erectile dysfunction including sildenafil, vardenafil, tadalafil and alprostadil 2 days prior to any visit is prohibited. Page 17 of 35 Protocol: ABC01 Final V1.0 Confidential 7.0 Study Procedures The schedule of visits and procedures to be conducted at each visit are summarized in APPENDIX A. The study includes a 3- to 4-week single-blind placebo run-in phase and a 6-week double-blind treatment phase. All study visits should be scheduled at 1- or 2-week intervals as specified; however, visit schedules may be adjusted by up to 3 days to accommodate the needs of the patient or clinic. 7.1 Visit 1 (Week -4, Screening) The prospective patients will visit the study site and be examined by the study physician. The screening visit may occur up to 10 days prior to entry into the placebo run-in phase. The following procedures will be performed at the screening visit: • Medical/ Medication History • Informed Consent • Review Inclusion/Exclusion Criteria • Physical Examination including pulse, respirations and temperature • Measure height and weight • Record all previous prescription and non-prescription medications (including nutriceuticals and dietary supplements) taken within the 30 days before the Screening Visit. • Check for use of prohibited medications • 12-lead ECG • Serum chemistries, CBC, urinalysis • Serum Pregnancy (for women of childbearing potential) • Office Blood Pressure Measurement • Discontinue or start tapering current anti-hypertensive medication Patients with newly diagnosed or untreated hypertension may precede directly into the placebo run-in period as soon as the results of the screening laboratory tests are available and the patient meets all inclusion and exclusion criteria. Patients who are currently receiving treatment for hypertension must be off all pharmacologic treatment by the start of the placebo run-in period. 7.2 Visit 2 (Week -3, Placebo Run-in) The following assessments will be done at this visit (visit to occur within 10 days of screening visit): • Confirm eligibility of Inclusion/Exclusion criteria • Office Blood Pressure Measurement • Vital Signs (respirations, pulse, weight) • Adverse Events Assessment • Concomitant Medication Assessment Page 18 of 35 Protocol: ABC01 Final V1.0 Confidential • Dispense Single-Blind Study Drug • Schedule next visit 7.3 Visit 3 (Week -2, Placebo Run-in) The following assessments will be done at this visit (visit to occur 1 week after Visit 2): • Confirm eligibility of Inclusion/Exclusion criteria • Office Blood Pressure Measurement • Vital Signs (respirations, pulse, weight) • Adverse Events Assessment • Concomitant Medication Assessment • Retrieve Single-Blind Study Drug • Count Tablets and Check Compliance • Dispense Single-Blind Study Drug • Schedule next visit 7.4 Visit 4 (Week -1, Placebo Run-in) The following assessments will be done at this visit (visit to occur 1 week after Visit 3): • Confirm eligibility of Inclusion/Exclusion criteria • Office Blood Pressure Measurement • Vital Signs (respirations, pulse, weight) • Adverse Events Assessment • Concomitant Medication Assessment • Retrieve Single-Blind Study Drug • Count Tablets and Check Compliance • Dispense Single-Blind Study Drug • Schedule next visit 7.5 Visit 5 (Week 0 Baseline) or Visit 4A (Week -1A Placebo Run-In) Patients will report to the clinic 6 days after completion of Visit 4 Patients with a mean sitting DBP of ≥ 95mmHg will complete all the assessments for Visit 5. Patients with a sitting DBP <95 mmHg may continue in the placebo run-in phase for 1 additional week and will complete all assessments required at Visit 4, which be captured as Visit 4A. At the end of the additional week, patients will return to the clinic for Visit 5. Patients with a mean sitting DBP< 95 mmHg after 4 weeks (Visit 5) of placebo treatment should be withdrawn from the trial. The following assessments will be done at the baseline visit: • Confirm eligibility of Inclusion/Exclusion criteria • Retrieve Single-Blind Study Drug • Count Tablets and Check Compliance • Perform Office Blood Pressure Measurement (see Section 6.1) • Vital Signs (respirations, pulse, weight) Page 19 of 35 Protocol: ABC01 Final V1.0 Confidential • 12-lead ECG • Chemistries, CBC, urinalysis • Urine pregnancy test (for women of childbearing potential) • Adverse Events Assessment • Concomitant Medication Assessment • Place ABPM device on patient and begin recording. Perform t-tube comparison at beginning of recording as instructed. The patient is instructed to return to the Principal Investigator’s office the next day to have the ABPM device removed. • Have patient take Single-Blind Study Drug • Schedule next visit 7.6 Visit 6 (Week 0, Baseline/Randomization) This visit will occur one day after Visit 5. Patients who meet all of the inclusion criteria and who do not have any exclusionary conditions may be randomized into the double-blind treatment phase. Patients must meet both the ABPM minimum quality control requirements and the ambulatory mean 24-hour diastolic blood pressure (M24DBP) inclusion criteria of ≥85 mmHg to qualify for randomization. In the event a patient has a technically successful recording, but fails to meet the minimum inclusion criteria (M24DBP > 85 mmHg), the patient should be dropped from the trial at this time (screen failure). If a recording fails to meet the minimum quality control requirements for a successful recording, the 24-hour ABPM may be repeated for an additional 24 hours. Please re-dose the patient with single-blind placebo medication and ask the patient to return the next day for removal of the device and determination of further study eligibility. • Remove the ABPM device from the patient • Download ABPM device and perform quality control on the ABPM data • Record mean 24 hour diastolic BP observed on the CRF • Office Blood Pressure Measurement • Vital Signs (respirations, pulse, weight) • Assess Eligibility for Randomization • Adverse Events Assessment • Concomitant Medication Assessment • If patient meets criteria for randomization, dispense study drug for Double-Blind phase of study (First dose taken in the office) • Schedule Next Visit 7.7 Visit 7 (Week 2, Double-Blind Treatment) The following assessments will be done at this visit (visit to occur two weeks after Baseline): • Office (Trough) Blood Pressure Measurement • Vital Signs (respirations, pulse, weight) • Retrieve Double-Blind Study Drug • Count Tablets and Check Compliance • Dispense Double-Blind Study Drug Page 20 of 35 Protocol: ABC01 Final V1.0 Confidential • Adverse Events Assessment • Concomitant Medication Assessment • Schedule Next Visit 7.8 Visit 8 (Week 4, Double-Blind Treatment) The following assessments will be done at this visit (visit to occur 2 weeks after Week 2): • Office (Trough) Blood Pressure Measurement • Vital Signs (respirations, pulse, weight) • Retrieve Double-Blind Study Drug • Count Tablets and Check Compliance • Dispense Double-Blind Study Drug • Adverse Events Assessment • Concomitant Medication Assessment • Schedule Next Visit 7.9 Visit 9 (Week 6 End of Study/Early Termination) The following assessments will be done at this visit (visit to occur 2 weeks after Week 4): • Office (Trough) Blood Pressure Measurement • Vital signs-pulse, respirations, weight • Retrieve Double-Blind Study Drug • Count Tablets and Check Compliance • Dispense Double-Blind Study Drug (Last Dose taken in the office) • Place ABPM device on patient, perform t-tube comparisons, and begin recording as instructed. The patient should be informed to return the device the next day. • Adverse Events Assessment • Concomitant Medication Assessment • Schedule Next Visit 7.10 Visit 10 (Week 6 End of Study/Early Termination) The following assessments will be done at this visit (visit to occur 1 day after visit 9): • Office (Trough) Blood Pressure Measurement • Vital Signs (respirations, pulse, weight) • Remove the ABPM device • Perform quality control-If the device fails quality control, the recording must be immediately repeated for 24 hours. Please dose the patient and instruct the patient to return the next day for device removal. • Physical Examination • 12-lead ECG • Chemistries, CBC, urinalysis • Adverse Events Assessment Page 21 of 35 Protocol: ABC01 Final V1.0 Confidential • Concomitant Medication Assessment Page 22 of 35 Protocol: ABC01 Final V1.0 Confidential 8.0 Clinical Assessment 8.1 12-lead Electrocardiogram 12-lead ECG should be performed at Screening, Baseline and at the end of study. The ECG reading will be assessed at site and the findings will be recorded on the CRFs. 8.2 Physical Examination A general physical examination should be performed at Screening and at the end of study. Any new abnormalities observed after baseline should be recorded as adverse event. 8.3 Pregnancy Test and Serum pregnancy test for all women of childbearing potential should be performed at Screening. An urine pregnancy test should be performed at Baseline to confirm the pregnancy status for female subjects before randomization. Additional pregnancy test may be requested by the investigator if necessary. 8.4 Laboratory Assessments All assessments will be scheduled as indicated in the Appendix A. Schedule of assessments. Additional assessments may be performed as clinical indicated. The total volume of blood loss for laboratory assessments will be about 15 mL per visit. Baseline laboratory assessment should be performed within 3 days prior to randomization. All laboratory samples should be shipped to Best Central Lab for processing. Lab report will be provided to investigators. 8.4.1 Hematology Haemoglobin, haematocrit, platelet count, RBC, WBC with differenctial. 8.4.2 Serum Chemistry Na+, K+, Ca++, CL-, BUN, total protein, albumin, ALK, ALT, AST, LDH, total bilirubin, creatinine, blood glucose 8.4.3 Urinalysis Gravity, pH, protein, kenton, RBC, WBC Page 23 of 35 Protocol: ABC01 Final V1.0 Confidential 8.5 Office Blood Pressure and ABPM Measurements Please see Appendix B for detailed instructions. Page 24 of 35 Protocol: ABC01 Final V1.0 Confidential 9.0 Safety Assessment 9.1 Adverse Event and AE reporting 9.1.1 Definition of Adverse Event Per the International Conference of Harmonisation (ICH), an AE is any unfavorable and unintended medical occurance/sign (including an abnormal laboratory finding), symptom or disease in a patient or clinical investigation subject administrated a pharmaceutical product and which dose not necessarily have a causal relationship with this treatment. Pre-existing conditions which worsen during a study are to be reported as AE, too. 9.1.2 Definition of Serious Adverse Event A serious adverse event is any experience that suggests a significant hazard, contraindication, side effect or precaution. It is any adverse event that at any dose fulfils at least one of the following criteria: • is fatal; (results in death; NOTE: death is an outcome, not an event) • is Life-Threatening (NOTE: the term "Life-Threatening" refers to an event in which the subject was at immediate risk of death at the time of the event; it does not refer to an event which could hypothetically have caused a death had it been more severe). • requires in-patient hospitalisation or prolongation of existing hospitalisation; • results in persistent or significant disability/incapacity; • is a congenital anomaly/birth defect; • is medically significant or requires intervention to prevent one or other of the outcomes listed above 9.1.3 AE Reporting and Follow-up Non-serious adverse event occurs after the first study dose and during the study should be recorded in CRFs and followed up until the end of the study. Serious adverse event occurs after the informed consent is signed and up to 30 days after the last study dose should be recorded in CRFs and followed during the study and up to 3 months after the last study dose. Page 25 of 35 Protocol: ABC01 Final V1.0 Confidential 10.0 Statistical Consideration and Analysis 10.1 General Statistical Method <see the protocol synopsis> 10.2 Analysis Population The following three analysis populations will be utilized: Safety: The safety analysis population will include all subjects who were randomized, and received at least one dose of study drug. Modified Intent-to-treat (MITT): The MITT population will include all subjects who were randomized, received at least one dose of study drug, and who have Baseline and at least one post-baseline measurement for seated blood pressure. Per Protocol (PP): The per protocol population will include all subjects in the MITT population who meet the study treatment compliance criteria and had no major protocol violations. This population will be determined before breaking the blind. 10.3 Subject Disposition Subject enrollment and disposition will be summarized for each treatment group and for the total using all randomized subjects. The table will present the number and percentage of subjects who were randomized, took study drug, completed the Treatment Period, and withdrew from the study. The number and percentage of subjects who prematurely discontinued will also be summarized by reasons for discontinuation. For each population (Safety, MITT, and PP), the number and percentage of subjects included will be reported by treatment group and total. Enrollment and disposition, prematurely discontinued subjects, and subjects excluded from each of the MITT and PP populations will be presented by treatment and subject in separate listings using all randomized subjects. 10.4 Demographic and Baseline Characteristics Demographics and Baseline characteristics will be summarized descriptively using the Safety, MITT, and PP populations. An ANOVA with factor treatment will be performed for continuous variables. A chi-square test will be used for the categorical variables. Page 26 of 35 Protocol: ABC01 Final V1.0 Confidential The percentage of subjects with medical histories will be tabulated by treatment group and body system. Results of physical examination, ECG, at Screening will be summarized by treatment group. 10.5 Protocol Deviation Protocol deviations will be identified and documented based on a review of selected data listings prior to treatment unblinding. Protocol deviations will be presented in a data listing and tabulated by treatment for all randomized subjects. 10.6 Efficacy Analysis <placeholder> 10.7 Safety Analysis <placeholder> 10.8 Sample Size Estimation/Justification <placeholder> Page 27 of 35 Protocol: ABC01 Final V1.0 Confidential 11.0 Ethics <Standard statement> Page 28 of 35 Protocol: ABC01 Final V1.0 Confidential 12.0 Data Handling and Record Keeping <Standard statement> Page 29 of 35 Protocol: ABC01 Final V1.0 Confidential 13.0 Financing and Insurance <Standard statement> Page 30 of 35 Protocol: ABC01 Final V1.0 Confidential 14.0 Publication Policy <Standard statement> Page 31 of 35 Protocol: ABC01 Final V1.0 Confidential 15.0 Reference List <Standard statement> Page 32 of 35 Protocol: ABC01 Final V1.0 Confidential APPENDIX A Schedule of Study Evaluations Study Phase WEEK VISIT NUMBER Medical/Medication History Informed Consent Inclusion/Exclusion Criteria Taper Medications[2] Physical Examination 12-Lead ECG Serum Pregnancy Test Urine Pregnancy Test Serum Chemistry Hematology Urinalysis Vital Signs-respirations, pulse, weight Office Blood Pressure [3] Start 24-hour ABPM [4] End 24-hour ABPM [4] Dispense Medication Check Medication Compliance Assessment of AEs Concomitant Medication Screening [1] 1 X X X X X X X X X X X X X Placebo Run-in -3 -2 -1 -1A 2 3 4 4A* X X X X Baseline 0 5 Double-Blind Treatment 0 2 4 6 6 6 7 8 9** 10** X X X X X X X X X X X X P P X X X P X X X P X X X X X X X X X X X X P [5] X X X X X X D [6] X X [1] Screening to be conducted within 10 days of entry into placebo run-in period [2] Once eligibility criteria are met discontinue (abruptly or taper at the PIs discretion) prohibited medications before starting placebo run-in phase [3] Sitting and standing blood pressure (mean of 3 seated measurements taken 2 minutes apart; one standing blood pressure; 24±2 hours after previous dose of study medication) [4] 24-hour ambulatory blood pressure monitor [5] Last dose administered in office from bottle retrieved from patients after placement of ABPM recorder [6] First dose administered in the office from the patient’s randomized study drug bottle after all procedures are complete. P = single-blind placebo medication (dispense as required) D = randomized double-blind medication (dispense as required) * Optional visit if blood pressure is not stabilized, or sitting DBP < 95 mmHg after 3 weeks of single-blind placebo run-in ** End of study visits. All procedures at these visits must be conducted for patients who discontinue early. Page 33 of 35 Protocol: ABC01 Final V1.0 X X X X X X X D X X X D X X X D [5] X X X X X X X X X X X Confidential APPENDIX B Blood Pressure Measurement: Office and Ambulatory Blood Pressure Monitoring Office BP Measurement Using the Sphygmomanometer: The non-dominant arm should be used throughout the study to obtain blood pressure measurements that will be recorded in the source document and the Case Report Form. Blood pressure measurements should be performed using the following criteria: • Inflate the cuff to a pressure approximately 30 mmHg greater than systolic, as estimated from the disappearance of the pulse in the brachial artery by palpation. • Place the stethoscope lightly over the brachial artery. • Measure the blood pressure with the patient's arm supported at the level of the heart. • Deflate the cuff slowly at a rate of 2 mmHg per heartbeat. • The first appearance of sound (phase 1) is used to define systolic blood pressure. The disappearance of sound (phase 5) is used to define diastolic blood pressure. It is important to avoid miscuffing – the bladder width should be at least 40% of the arm circumference and the bladder length should be a least 80% of the arm circumference. In patients with large upper arms, a longer and wider cuff should be used (15 cm wide cuff should be adequate). Only study personnel properly trained in the procedures required for this protocol should perform these blood pressure measurements. Training documentation will be maintained at the investigative site to record this specialized training. Sitting and standing blood pressure will be measured using an appropriately calibrated sphygmomanometer. After sitting for five minutes, three blood pressures and one heart rate measurement should be obtained and recorded at two-minute intervals. Then after standing for one minute, one blood pressure should be measured and recorded. If the 3 consecutive seated diastolic BP readings are not within 5 mmHg of each other, then 2 additional seated BP readings should be obtained and incorporated into the calculated mean pressures. Ambulatory Blood Pressure Monitoring (ABPM) Best Corelab Services will provide the ambulatory blood pressure recording device that has been validated independently by the American Association for the Advancement of Medical Instrumentation. The device is an automatic, portable monitor that will be used at all centers to record BP and heart rate over a 24-hour period on 2 occasions (Baseline and Week 6 visit or Early Termination). The ABPM studies should be performed under similar circumstances (i.e., a working weekday). If possible, the device should be applied on the same day of the week and as close to the same time of day as feasible on each occasion. For each evaluation, the patient should report to the clinic 24±2 hours after the previous morning’s dose of study medication for ABPM placement. An experienced technician should test the device for agreement with an appropriately calibrated sphygmomanometer using a t-tube and stethoscope. The average of 3 simultaneous ABPM and sphygmomanometer diastolic BP measurements should agree within 7 mmHg. The ABPM start time should precede the day’s study drug ingestion. Thus, the ABPM recorder will be manually initiated to indicate the beginning of the test and the start time will be recorded in the CRF and source document. The patient time of the morning dose of study medication will also be recorded in the CRF and source document. The device will be set to obtain readings every 15 minutes during the interval of 0600h to 2200h (to coincide with the daytime, awake period) and every 20 minutes during the interval of 2200h to 0600h (to coincide with the night time, sleeping period). The patient will be instructed to return to the clinic 24 hours after the post-dosing ABPM start time. Page 34 of 35 Protocol: ABC01 Final V1.0 Confidential The patient should engage in their usual physical activity levels, but should avoid strenuous exercise during the monitoring period. Additionally, sleeping during the daytime (e.g., a siesta) should be avoided during the ABPM study period. During the actual BP measurements, the patient should be instructed to hold their arm still and remain in place once cuff inflation begins. Data will be edited according to the dedicated software program of the device. In addition, software will identify readings that are outside of editing criteria and exclude them from the statistical analyses; however, these readings will remain as part of the raw data report. An ABPM recording will be considered adequate if: 1. The “Beginning of Test” time is 24±2 hours after the previous morning’s dose of study medication 2. The monitoring period is at least 24 hours in duration. 3. At least 70 valid readings were obtained (80% acceptance rate). 4. No more than 2 non-consecutive hours are missing a valid reading. If the recording does not meet these minimal quality control criteria, the ABPM recordings should be repeated once within 3 days. Patients will be instructed on the administration of the appropriate study medications if a repeat ABPM is required. In the event the recording does meet the minimal quality control criteria, however, the patient fails to meet the minimum inclusion BP criteria (M24DBP > 85 mmHg), the ABPM should not be repeated and the patient should be dropped from the trial at this time (screen failure). Patient must meet both the minimal QC criteria AND the M24DBP inclusion criteria for randomization. Page 35 of 35 Protocol: ABC01 Final V1.0