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| ID | Type | Description | Link |
|---|---|---|---|
| 2009-016766-86 | EudraCT Number |
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The purpose of the study is to explore the safety and efficacy of a new once a day pregabalin formulation versus placebo for patients with post herpetic neuralgia (Shingles)
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Pregablain CR tablet 82.5 to 660mg | Experimental |
| |
| Placebo | Placebo Comparator |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Pregabalin | Drug | Tablets, 82.5 to 660mg, once per day. Duration: 19 weeks |
|
| Measure | Description | Time Frame |
|---|---|---|
| Number of Participants With Loss of Therapeutic Response. | Loss of Therapeutic Response (LTR) is defined as <30% pain response relative to the single blind phase baseline or patient discontinuation due to lack of efficacy or adverse events in the double blind phase of the study. For the calculation of <30% pain response relative to baseline, baseline will be defined as the mean of the last 7 observations prior to the start of SB treatment, which will be compared with the 7 days rolling average of pain response in DB phase. Participants may be discontinued due to lack of efficacy in this study at the discretion of the study physician. | 13 Weeks |
| Measure | Description | Time Frame |
|---|---|---|
| Participants With Secondary LTR Based on 5 Day Rolling Average Diary Results | A secondary LTR endpoint (S-LTR) was defined as the 5 day rolling average pain score during DB, compared to the 5 day randomization baseline pain score. As a secondary endpoint, S-LTR was defined as:
|
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Pfizer CT.gov Call Center | Pfizer | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Fundamental Research | Gulf Shores | Alabama | 36542 | United States | ||
| Radiant Research, Inc. |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 27753650 | Derived | Huffman CL, Goldenberg JN, Weintraub J, Sanin L, Driscoll J, Yang R, Chew ML, Scavone JM. Efficacy and Safety of Once-Daily Controlled-Release Pregabalin for the Treatment of Patients With Postherpetic Neuralgia: A Double-Blind, Enriched Enrollment Randomized Withdrawal, Placebo-Controlled Trial. Clin J Pain. 2017 Jul;33(7):569-578. doi: 10.1097/AJP.0000000000000445. |
| Label | URL |
|---|---|
| To obtain contact information for a study center near you, click here. | View source |
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The study consisted of 4 phases: Baseline (1 week [wk]): to determine study entry criteria; Single Blind (SB) (6 wks): to determine optimized dose; Double Blind (DB) (13 wks): responders with at least 50% improvement in pain at SB were considered and randomized to pregabalin or matching placebo; and DB taper phase (1 wk).
A total of 129 centers in 17 countries screened subjects for the study, including 68 in the US, 6 in Bulgaria, 6 in Poland, 6 in Russia, 6 in the Ukraine, 5 in India, 5 in South Africa, 5 in Sweden, 4 in Slovakia, 3 in Colombia, 3 in Croatia, 3 in Germany, 2 in Denmark, 2 in Hong Kong, 2 in Serbia, 2 in Taiwan, and 1 in the Czech Republic.
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| ID | Title | Description |
|---|---|---|
| FG000 | Pregabalin Controlled Release (CR) DB | Possible doses for participants with normal creatinine clearance (CLcr) (≥60 mL/min) during the DB fixed dose phase were pregabalin CR 165 mg/day, 330 mg/day, 495 mg/day CR or 660 mg/day CR. Doses for participants with low CLcr (>30 - <60 mL/min) were pregabalin 82.5 mg/day, 165 mg/day, 247.5 mg/day, or 330 mg/day CR. |
| Title | Milestones | Reasons Not Completed | |||||
|---|---|---|---|---|---|---|---|
| Pregabalin CR SB |
|
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| placebo | Drug | Placebo, 82.5 to 660mg, once per day. Duration: 13 weeks |
|
| 13 Weeks |
| Percentage of Participants With 30% Reduction in the Mean Pain Score. | The 30% pain responders were defined as participants with at least a 30% reduction in the mean pain score from SB baseline to DB endpoint. | 13 Weeks |
| Percentage of Participants With 50% Reduction in the Mean Pain Score. | The 50% pain responders were defined as participants with at least a 50% reduction in the mean pain score from SB baseline to DB endpoint. | 13 Weeks |
| Change From Baseline to Endpoint in Weekly Mean Pain Score. | The pain numeric rating scale (NRS Pain) consists of an 11 point NRS ranging from 0 (no pain) to 10 (worst possible pain). A rating of 1-3 is considered mild pain; 4-6, moderate pain; and 7-10, severe pain | SB Baseline (Enrollment) to Week 19 and DB Baseline (Week 6) to Week 19 |
| Change in the Weekly NRS-Pain (1-Week Recall). | The pain numeric rating scale (NRS Pain) consists of an 11 point NRS ranging from 0 (no pain) to 10 (worst possible pain). A rating of 1-3 is considered mild pain; 4-6, moderate pain; and 7-10, severe pain. Participants were asked to rate their pain over the past week. | SB Baseline (Enrollment) to Week 19 and DB Baseline (Week 6) to Week 19 |
| Change in the Medical Outcomes Study-Sleep Scale (MOS-SS). | The MOS-SS is a validated self administered questionnaire consisting of 12 items that assess key constructs of sleep. The scale has been found reliable and valid with good overall measurement properties. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9 item overall sleep problems index assessing sleep over the past week. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range multiplied by 100); total score range = 0 to 100; higher score indicates greater intensity of attribute. | SB Baseline (BL) (Enrollment) to Week 19 and DB Baseline (Week 6) to Week 19 |
| Change in the MOS-SS-Quantity of Sleep. | The MOS-SS is a validated self administered questionnaire consisting of 12 items that assess key constructs of sleep. The scale has been found reliable and valid with good overall measurement properties. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9 item overall sleep problems index assessing sleep over the past week. The item "Quantity of sleep" of MOS-SS is presented here. | SB Baseline (BL) (Enrollment) to Week 19 and DB Baseline (Week 6) to Week 19 |
| The MOS-SS-Optimal Sleep. | The MOS-SS is a validated self administered questionnaire consisting of 12 items that assess key constructs of sleep. The scale has been found reliable and valid with good overall measurement properties. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9 item overall sleep problems index assessing sleep over the past week. The optimal sleep score is a dichotomous 'Yes' or 'No' rating, where 'Yes' indicates optimal sleep (average 7-8 hours per night) and 'No' indicates not optimal sleep. The "percentage of participants with optimal sleep" is presented here. | Week 6 and Week 19 |
| Percentage of Participants With Change in the Patient Global Impression of Change (PGIC) Score | The PGIC is a participant-rated instrument that has been used in chronic pain and fibromyalgia studies to rate change in a patient's overall status. This single item instrument uses a 7 point Likert scale, anchored by (1) very much improved, to (7) very much worse. | Week 19 |
| Change in the Short Form 36 Health Survey (SF-36) | The SF 36 is a self administered, validated questionnaire that measures each of the following 8 health aspects: Physical functioning, role limitations due to physical problems, social functioning, bodily pain, mental health, role limitations due to emotional problems, vitality, and general health perception over the past week. The score for a section is an average of the individual question scores, which are scaled 0-100 (100=highest level of functioning) where, higher scores indicate a better health related quality of life. | Week 19 |
| Change in Mean Daily Sleep Interference Scores | The pain related sleep interference item rating scale is scored on an 11 point numeric rating scale (NRS Sleep). It is self administered by the subject in order to rate how pain has interfered with their sleep during the past 24 hours, ranging from 0 (pain does not interfere with sleep) to 10 (completely interferes (unable to sleep due to pain)). Participants are to describe how their pain has interfered with their sleep during the past 24 hours by choosing the appropriate number on the numeric rating scale. | Week 19 |
| Change in Hospital Anxiety and Depression Scales (HADS) | The HADS is a self administered questionnaire that was designed to screen for the presence of a mood disorder in medically ill patients. To distinguish psychiatric presentations from physical illness, the items focus on subjective disturbance of mood rather than physical signs. The HADS contains 14 items rated on 4 point Likert type scales. Two subscales assess depression and anxiety. Each subscale consists of 7 statements, rated on a scale of 0 to 3 (0 = No anxiety or depression, to 3 = Severe feelings of anxiety or depression). Separate scores are calculated for each subscale ranging from 0 to 21. Higher scores denote greater severity of depression or anxiety | Week 19 |
| Change in the Brief Pain Inventory (BPI-sf) | The BPI sf is a self-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during a 24 hour period prior to evaluation. The BPI sf consists of 5 questions. Questions 1, 2, 3, and 4 measure pain on an 11 point scale from 0 (no pain) to 10 (worst pain possible). Question 5 consists of 7 item subsets which measure the level of interference of pain on daily functions on an 11 point scale from 0 (Does not interfere) to 10 (Completely interferes). | Week 19 |
| Percentage of Participants With Benefit From Treatment, Satisfaction With Treatment and Willingness to Continue Treatement (BSW) | The BSW is administered by the study physician or designated site personnel and consists of three single item measures designed to capture the patient's perception of the effect of treatment in terms of the relative benefit, their satisfaction, and their intention or willingness to continue on therapy. | Week 19 |
| Number of Participants With Adverse Events | An adverse event (AE) is any untoward medical occurrence in a clinical investigation participant administered a product or medical device; the event need not necessarily have a causal relationship with the treatment or usage. A serious adverse event is any untoward medical occurrence at any dose that: Results in death; Is life-threatening (immediate risk of death); Requires inpatient hospitalization or prolongation of existing hospitalization; Results in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions); or Results in congenital anomaly/birth defect. The study physician used the adjective "severe" to those AEs that interfere significantly with participant's usual function. | Baseline to Week 20 |
| Percentage of Participants With Suicidal Behaviour/Ideation | Percentage of participants with suicidal behavior/ideation were noted as Baseline, Weeks 6, 11, 15, 19 and 20. | Baseline, Weeks 6, 11, 15, 19 and 20 |
| Chandler |
| Arizona |
| 85224 |
| United States |
| Elite Clinical Studies, LLC | Phoenix | Arizona | 85018 | United States |
| HOPE Research Institute | Phoenix | Arizona | 85018 | United States |
| The Pain Center of Arizona | Phoenix | Arizona | 85018 | United States |
| The Pain Center of Arizona | Phoenix | Arizona | 85027 | United States |
| Genova Clinical Research | Tucson | Arizona | 85704 | United States |
| Larry Watkins, M.D. (Private Practice) | Little Rock | Arkansas | 72205 | United States |
| Lynn Institute of the Ozarks | Little Rock | Arkansas | 72205 | United States |
| Hearne Family Practice Clinic | Little Rock | Arkansas | 72206 | United States |
| Center for Clinical Research, Inc | Carmichael | California | 95608 | United States |
| Community Medical Providers | Clovis | California | 93611 | United States |
| Sierra Medical Research | Clovis | California | 93612 | United States |
| Inland Pain Medicine | Colton | California | 92324 | United States |
| The Helm Center | Laguna Hills | California | 92637 | United States |
| University of Southern California | Los Angeles | California | 90033 | United States |
| USC IDS Pharmacy | Los Angeles | California | 90089 | United States |
| Translational Research Group, Inc | North Hollywood | California | 91606 | United States |
| George J. Rederich, M.D., Incorporated | Redondo Beach | California | 90277 | United States |
| Integrated Research Group, Inc. | Riverside | California | 92506 | United States |
| Drug Shipmnent Only Aristotelis T. Laliotis, M.D. Integrated Research Center, Inc. | San Diego | California | 92117 | United States |
| Integrated Research Center, Inc. | San Diego | California | 92117 | United States |
| Center For Clinical Research, Inc. | San Francisco | California | 94115 | United States |
| Neurological Research Institute | Santa Monica | California | 90404 | United States |
| Foothills Pain Management Clinic, PS | West Covina | California | 91790 | United States |
| JEM Research Institute | Atlantis | Florida | 33462 | United States |
| Orthopedic Research Institute | Boynton Beach | Florida | 33472 | United States |
| Innovative Research of West Florida, Inc. | Clearwater | Florida | 33756 | United States |
| Clinical Research of West Florida, Inc. | Clearwater | Florida | 33765 | United States |
| Clinical Physiology Associates | Fort Myers | Florida | 33916 | United States |
| Health Care Family Rehab & Research Center | Hialeah | Florida | 33012 | United States |
| Laszlo Jozsef Mate, MD | North Palm Beach | Florida | 33408 | United States |
| Family Care Specialists | Ocala | Florida | 34471 | United States |
| Renstar Medical Research | Ocala | Florida | 34471 | United States |
| Compass Research, LLC | Orlando | Florida | 32806 | United States |
| Comprehensive Pain care of South Florida | Royal Palm Beach | Florida | 33411 | United States |
| Comprehensive Clinical Development Inc. | St. Petersburg | Florida | 33716 | United States |
| Neurology Clinical Research, Inc. | Sunrise | Florida | 33351 | United States |
| Clinical Research of West Florida, Inc. | Tampa | Florida | 33603 | United States |
| Meridien Research | Tampa | Florida | 33606 | United States |
| Injury Care Medical Center | Boise | Idaho | 83713 | United States |
| Millennium Pain Center, LLC | Bloomington | Illinois | 61701 | United States |
| (IP Shipping Address) Advocate Illinois Masonic Medical Center | Chicago | Illinois | 60657 | United States |
| Chicago Anesthesia Pain Specialists | Chicago | Illinois | 60657 | United States |
| Advanced Pain Care Clinic | Evansville | Indiana | 47714 | United States |
| Clinical Research Advantage | Evansville | Indiana | 47714 | United States |
| Global Scientific Innovations | Evansville | Indiana | 47714 | United States |
| Clinical Trials of America, Inc. | Monroe | Louisiana | 71201 | United States |
| Boston Clinical Trials | Boston | Massachusetts | 02135 | United States |
| Beacon Clinical Research | Brockton | Massachusetts | 02301 | United States |
| Infinity Medical Research, Inc. | North Dartmouth | Massachusetts | 02747 | United States |
| Michigan Head Pain & Neurological Institute | Ann Arbor | Michigan | 48104 | United States |
| QUEST Research Institute | Bingham Farms | Michigan | 48025 | United States |
| The Center for Pharmaceutical Research, PC | Kansas City | Missouri | 64114 | United States |
| Clinvest, A Division of Banyan Group, Inc | Springfield | Missouri | 65807 | United States |
| Medex Healthcare Research, Inc. | St Louis | Missouri | 63117 | United States |
| Montana Medical Research Inc | Missoula | Montana | 59808 | United States |
| Lincoln Internal Medicine Associates | Lincoln | Nebraska | 68516 | United States |
| Drug Shipment Only: Heartland Clinical Research, Inc. | Omaha | Nebraska | 68134 | United States |
| Heartland Clinical Research, Inc. | Omaha | Nebraska | 68134 | United States |
| The Office of Dr. Stephen H. Miller, MD | Las Vegas | Nevada | 89144 | United States |
| Albuquerque Clinical Trials, Inc. | Albuquerque | New Mexico | 87102 | United States |
| Dent Neurological Institute | Amherst | New York | 14226 | United States |
| SPRI Clinical Trials LLC | Brooklyn | New York | 11235 | United States |
| Medex Healthcare Research, Inc - Saint Louis | New York | New York | 10036 | United States |
| North American Partners In Pain Management | New York | New York | 11580 | United States |
| Asheville Neurology Specialists, PA | Asheville | North Carolina | 28806 | United States |
| Raleigh Neurology Associates, P.A. | Raleigh | North Carolina | 27607 | United States |
| The Center for Clinical Research | Winston-Salem | North Carolina | 27103 | United States |
| Radiant Research | Akron | Ohio | 44311 | United States |
| Providence Health Partners-Center for Clinical Research | Dayton | Ohio | 45439 | United States |
| Wells Institute for Health Awareness | Kettering | Ohio | 45429 | United States |
| Lynn Health Science Institute | Oklahoma City | Oklahoma | 73112 | United States |
| Mark A Fisher | Oklahoma City | Oklahoma | 73112 | United States |
| Pharmacorp Clinical Trials, Inc. | Charleston | South Carolina | 29412 | United States |
| Arlington Research Center, Inc. | Arlington | Texas | 76011 | United States |
| Lovelace Scientific Resources, Inc. | Austin | Texas | 78758 | United States |
| Radiant Research | Dallas | Texas | 75231 | United States |
| ClinRx Research, LLC | Richardson | Texas | 75080 | United States |
| Hillcrest Family Health Centers, Division of Clinical Research | Waco | Texas | 76710 | United States |
| Clinical Research Associates of Tidewater | Norfolk | Virginia | 23507 | United States |
| Clinical Investigation Specialists, Inc. | Kenosha | Wisconsin | 53142 | United States |
| DCC "St. Pantaleimon" OOD | Pleven | 5800 | Bulgaria |
| MHAT-Pleven | Pleven | 5800 | Bulgaria |
| MBALNP "Sveti Naum" EAD, Klinika po nervni bolesti za dvigatelni narushenia | Sofia | 1113 | Bulgaria |
| Vtora Mnogoprofilna Bolnitsa za Aktivno Lechenie ¿ Sofia, AD, Sofia, Nevrologichno otdelenie | Sofia | 1202 | Bulgaria |
| MBAL "Tokuda Bolnitsa", Otdelenie po nevrologiya | Sofia | 1407 | Bulgaria |
| Universitetska mnogoprofilna bolnitsa za aktivno lechenie Aleksandrovska, Klinika po Nevrologia | Sofia | 1431 | Bulgaria |
| Reumalab S.A.S | Medellín | Antioquia | Colombia |
| Centro de Investigacion y Atencion Para la Salud Mental S.A. - CESAME | Bogota | Cundinamarca | 0 | Colombia |
| Fundacion Cardiovascular de Colombia | Floridablanca | Santander Department | 0 | Colombia |
| Opca bolnica Karlovac | Karlovac | Karlovacka Županija | 47000 | Croatia |
| Klinicki Bolnicki Centar Osijek | Osijek | Osjecko-baranjska Županija | 31000 | Croatia |
| Opca bolnica "Dr. Ivo Pedisic" | Sisak | Sisacko-moslavacka Županija | 44000 | Croatia |
| Neurologicka ambulance | Prerov I | 750 02 | Czechia |
| Aalborg Sygehus Nord | Aalborg | North Denmark | DK-900 | Denmark |
| Glostrup Hospital | Glostrup Municipality | DK-2066 | Denmark |
| Schmerzzentrum Frankfurt | Frankfurt am Main | Hesse | 60311 | Germany |
| pro scientia med im MARE Klinikum | Kiel-Kronshagen | Schleswig-Holstein | 24119 | Germany |
| DGS-Schmerzzentrum Eichstätt | Eichstätt | 85072 | Germany |
| Family Medicine | Hong Kong | Hong Kong |
| Queen Elizabeth Hospital | Kowloon | Hong Kong |
| Medanta Institute of Neurosciences | Gurgaon | Haryana | 122 001 | India |
| Manipal Hospital | Bangalore | Karnataka | 560 017 | India |
| M. S. Ramaiah Medical College and Hospitals | Bangalore | Karnataka | 560 054 | India |
| Mallikatta Neuro Centre | Mangalore | Karnataka | 575002 | India |
| Indraprastha Apollo Hospitals | New Delhi | 110 076 | India |
| "SYNEXUS POLSKA" Sp. z o.o. | Wroclaw | Lower Silesian Voivodeship | 50088 | Poland |
| Prof. dr hab. med. Leszek Szepanski Prywatna Praktyka Lekarska Gabinet Reumatologiczny | Lublin | Lublin Voivodeship | 20022 | Poland |
| "SYNEXUS POLSKA" Sp. z o.o. Oddzial w Warszawie | Warsaw | Masovian Voivodeship | 01192 | Poland |
| Niepubliczny Zaklad Opieki Zdrowotnej "Przychodnia Morena" Sp. z o.o. | Gdansk | Pomeranian Voivodeship | 80286 | Poland |
| "SYNEXUS POLSKA" Sp. z o.o. Oddzial w Gdyni | Gdynia | Pomeranian Voivodeship | 81384 | Poland |
| "SYNEXUS POLSKA" Sp. z o.o. Oddzial w Katowicach | Katowice | Silesian Voivodeship | 40040 | Poland |
| State Budgetary Health Institution of Yaroslavl region "Clinical hospital #10" | Yaroslavl | Russian Federation | 150023 | Russia |
| State Budgetary Educational Institution for higher Professional Training "Kazan State Medical Univer | Kazan' | Tatarstan, Respublika | 119992 | Russia |
| Kazan State Medical University | Kazan' | Tatarstan, Respublika | 420064 | Russia |
| GBUZ Nizhny Novgorod Regional Clinical Hospital N.A. Semashko | Nizhny Novgorod | 603126 | Russia |
| Clinic of Nervous Diseases M.I. Astvatsaturov | Saint Petersburg | 194175 | Russia |
| St. Petersburg State Healthcare Institution City Hospital # 40 Kurortnogo Administrativnogo Rajona | Saint Petersburg | 197706 | Russia |
| State Budgetary Educational Institution for Higher Professional Education | Smolensk | 214018 | Russia |
| State Budgetary Educational Institution for Higher Professional Education | Smolensk | 214019 | Russia |
| Clinic for Neurology | Belgrade | 11000 | Serbia |
| Clinic for Neurology | Niš | 18000 | Serbia |
| Euro-Neuro s.r.o., Neurologicka ambulancia | Bratislava | 831 03 | Slovakia |
| Univerzitna nemocnica Bratislava, Nemocnica sv. Cyrila a Metoda, Neurologicke oddelenie | Bratislava | 851 07 | Slovakia |
| MUDr. Eva Gasparova - neurologicka ambulancia | Hlohovec | 920 01 | Slovakia |
| Neurologicka ambulancia, Neuron-DT,s.r.o. | Žilina | 01001 | Slovakia |
| Nelson Mandela Academic Hospital Research Unit | Mthatha | Eastern Cape | 5099 | South Africa |
| Iatros International | Bloemfontein | 9301 | South Africa |
| Synapta Clinical Research Centre | Durban | 4001 | South Africa |
| Mzansi Ethical Research Centre | Middelburg | 1050 | South Africa |
| Jakaranda Pain Clinic | Pretoria | 0014 | South Africa |
| Probare | Lund | Skåne County | 222 22 | Sweden |
| Me3plus Clinical Trials | Gothenburg | 412 63 | Sweden |
| CTC, Sahlgrenska sjukhuset/SU | Gothenburg | 413 45 | Sweden |
| Center for Lakemedelsstudier | Malmö | 211 52 | Sweden |
| Bragee Medect AB | Stockholm | 115 22 | Sweden |
| Chang Gung Medical Foundation-Linkou Branch | Kwei Shan Town | Taoyuan County | 333 | Taiwan |
| National Taiwan University Hospital (Neurology) | Taipei | 100 | Taiwan |
| Public Institution "Institute of Neurology, Psychiatry and Narcology of AMS of Ukraine" | Kharkiv | 61068 | Ukraine |
| Kyiv City Clinical Hospital #4 | Kyiv | 03110 | Ukraine |
| Lviv NMU n.a. Danylo Galytskyy | Lviv | 79013 | Ukraine |
| Regional Municipal Dermatovenerologic Dispensary | Lviv | 79013 | Ukraine |
| Crimean Republican Institution "Clinical Dermatovenerologic Dispensary" | Simferopol | 95006 | Ukraine |
| Municipal Establishment "Vinnitsa Regional Psychoneurological Hospital n.a. O.I. Yushchenko" | Vinnitsa | 21005 | Ukraine |
| Municipal Establishment "City Clinical Hospital #2", Neurology Department | Zaporizhzhya | 69068 | Ukraine |
| FG001 |
| Placebo DB |
Participants received matching placebo |
| FG002 | Pregabalin CR SB | The participants with normal CLcr (≥60 mL/min) were treated with pregabalin 165 mg/day CR; those with low CLcr (>30 - <60 mL/min) received 82.5 mg/day pregabalin CR. Subsequently, the pregabalin doses were increased based on efficacy and tolerability at each weekly visit. |
| COMPLETED |
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| NOT COMPLETED |
|
|
| Double Blind Phase |
|
|
Baseline analysis population description consisted of all participants randomized to the DB phase who received at least 1 dose of study medication in the DB phase (full analysis set).
Not provided
| ID | Title | Description |
|---|---|---|
| BG000 | Pregabalin CR DB | Possible doses for participants with normal creatinine clearance (CLcr) (≥60 mL/min) during the DB fixed dose phase were pregabalin CR 165 mg/day, 330 mg/day, 495 mg/day CR or 660 mg/day CR. Doses for participants with low CLcr (>30 - <60 mL/min) were pregabalin 82.5 mg/day, 165 mg/day, 247.5 mg/day, or 330 mg/day CR. |
| BG001 | Placebo DB | Participants received matching placebo |
| BG002 | Total | Total of all reporting groups |
| Units | Counts |
|---|---|
| Participants |
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| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Age, Customized | Number | Participants |
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| Sex: Female, Male | Count of Participants | Participants |
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| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Primary | Number of Participants With Loss of Therapeutic Response. | Loss of Therapeutic Response (LTR) is defined as <30% pain response relative to the single blind phase baseline or patient discontinuation due to lack of efficacy or adverse events in the double blind phase of the study. For the calculation of <30% pain response relative to baseline, baseline will be defined as the mean of the last 7 observations prior to the start of SB treatment, which will be compared with the 7 days rolling average of pain response in DB phase. Participants may be discontinued due to lack of efficacy in this study at the discretion of the study physician. | The full analysis set (FAS) was the primary efficacy analysis set and consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. | Posted | Number | Participants | 13 Weeks |
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| Secondary | Participants With Secondary LTR Based on 5 Day Rolling Average Diary Results | A secondary LTR endpoint (S-LTR) was defined as the 5 day rolling average pain score during DB, compared to the 5 day randomization baseline pain score. As a secondary endpoint, S-LTR was defined as:
| The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase | Posted | Number | Participants | 13 Weeks |
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| Secondary | Percentage of Participants With 30% Reduction in the Mean Pain Score. | The 30% pain responders were defined as participants with at least a 30% reduction in the mean pain score from SB baseline to DB endpoint. | The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. | Posted | Number | Percentage of participants | 13 Weeks |
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| Secondary | Percentage of Participants With 50% Reduction in the Mean Pain Score. | The 50% pain responders were defined as participants with at least a 50% reduction in the mean pain score from SB baseline to DB endpoint. | The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. | Posted | Number | Percentage of participants | 13 Weeks |
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| Secondary | Change From Baseline to Endpoint in Weekly Mean Pain Score. | The pain numeric rating scale (NRS Pain) consists of an 11 point NRS ranging from 0 (no pain) to 10 (worst possible pain). A rating of 1-3 is considered mild pain; 4-6, moderate pain; and 7-10, severe pain | The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. | Posted | Least Squares Mean | Standard Error | Units on a scale | SB Baseline (Enrollment) to Week 19 and DB Baseline (Week 6) to Week 19 |
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| Secondary | Change in the Weekly NRS-Pain (1-Week Recall). | The pain numeric rating scale (NRS Pain) consists of an 11 point NRS ranging from 0 (no pain) to 10 (worst possible pain). A rating of 1-3 is considered mild pain; 4-6, moderate pain; and 7-10, severe pain. Participants were asked to rate their pain over the past week. | The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. | Posted | Least Squares Mean | Standard Error | Units on a scale | SB Baseline (Enrollment) to Week 19 and DB Baseline (Week 6) to Week 19 |
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| Secondary | Change in the Medical Outcomes Study-Sleep Scale (MOS-SS). | The MOS-SS is a validated self administered questionnaire consisting of 12 items that assess key constructs of sleep. The scale has been found reliable and valid with good overall measurement properties. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9 item overall sleep problems index assessing sleep over the past week. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range multiplied by 100); total score range = 0 to 100; higher score indicates greater intensity of attribute. | The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. N in the below table refers to number of participants analyzed: 203 in Pregabalin DB CR group and 195 in Placebo DB group, unless otherwise specified. | Posted | Least Squares Mean | Standard Error | Units on a scale | SB Baseline (BL) (Enrollment) to Week 19 and DB Baseline (Week 6) to Week 19 |
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| Secondary | Change in the MOS-SS-Quantity of Sleep. | The MOS-SS is a validated self administered questionnaire consisting of 12 items that assess key constructs of sleep. The scale has been found reliable and valid with good overall measurement properties. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9 item overall sleep problems index assessing sleep over the past week. The item "Quantity of sleep" of MOS-SS is presented here. | The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. | Posted | Least Squares Mean | Standard Error | Hours | SB Baseline (BL) (Enrollment) to Week 19 and DB Baseline (Week 6) to Week 19 |
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| Secondary | The MOS-SS-Optimal Sleep. | The MOS-SS is a validated self administered questionnaire consisting of 12 items that assess key constructs of sleep. The scale has been found reliable and valid with good overall measurement properties. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9 item overall sleep problems index assessing sleep over the past week. The optimal sleep score is a dichotomous 'Yes' or 'No' rating, where 'Yes' indicates optimal sleep (average 7-8 hours per night) and 'No' indicates not optimal sleep. The "percentage of participants with optimal sleep" is presented here. | The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. | Posted | Number | Percentage of participants | Week 6 and Week 19 |
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| Secondary | Percentage of Participants With Change in the Patient Global Impression of Change (PGIC) Score | The PGIC is a participant-rated instrument that has been used in chronic pain and fibromyalgia studies to rate change in a patient's overall status. This single item instrument uses a 7 point Likert scale, anchored by (1) very much improved, to (7) very much worse. | The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. | Posted | Number | Percentage of participants | Week 19 |
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| Secondary | Change in the Short Form 36 Health Survey (SF-36) | The SF 36 is a self administered, validated questionnaire that measures each of the following 8 health aspects: Physical functioning, role limitations due to physical problems, social functioning, bodily pain, mental health, role limitations due to emotional problems, vitality, and general health perception over the past week. The score for a section is an average of the individual question scores, which are scaled 0-100 (100=highest level of functioning) where, higher scores indicate a better health related quality of life. | The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. N in the below table refers to number of participants analyzed: 203 in Pregabalin DB CR group and 195 in Placebo DB group, unless otherwise specified. | Posted | Least Squares Mean | Standard Error | Units on a scale | Week 19 |
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| Secondary | Change in Mean Daily Sleep Interference Scores | The pain related sleep interference item rating scale is scored on an 11 point numeric rating scale (NRS Sleep). It is self administered by the subject in order to rate how pain has interfered with their sleep during the past 24 hours, ranging from 0 (pain does not interfere with sleep) to 10 (completely interferes (unable to sleep due to pain)). Participants are to describe how their pain has interfered with their sleep during the past 24 hours by choosing the appropriate number on the numeric rating scale. | The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. | Posted | Least Squares Mean | Standard Error | Units on a scale | Week 19 |
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| Secondary | Change in Hospital Anxiety and Depression Scales (HADS) | The HADS is a self administered questionnaire that was designed to screen for the presence of a mood disorder in medically ill patients. To distinguish psychiatric presentations from physical illness, the items focus on subjective disturbance of mood rather than physical signs. The HADS contains 14 items rated on 4 point Likert type scales. Two subscales assess depression and anxiety. Each subscale consists of 7 statements, rated on a scale of 0 to 3 (0 = No anxiety or depression, to 3 = Severe feelings of anxiety or depression). Separate scores are calculated for each subscale ranging from 0 to 21. Higher scores denote greater severity of depression or anxiety | The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. | Posted | Least Squares Mean | Standard Error | Units on a scale | Week 19 |
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| Secondary | Change in the Brief Pain Inventory (BPI-sf) | The BPI sf is a self-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during a 24 hour period prior to evaluation. The BPI sf consists of 5 questions. Questions 1, 2, 3, and 4 measure pain on an 11 point scale from 0 (no pain) to 10 (worst pain possible). Question 5 consists of 7 item subsets which measure the level of interference of pain on daily functions on an 11 point scale from 0 (Does not interfere) to 10 (Completely interferes). | The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. | Posted | Least Squares Mean | Standard Error | Units on a scale | Week 19 |
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| Secondary | Percentage of Participants With Benefit From Treatment, Satisfaction With Treatment and Willingness to Continue Treatement (BSW) | The BSW is administered by the study physician or designated site personnel and consists of three single item measures designed to capture the patient's perception of the effect of treatment in terms of the relative benefit, their satisfaction, and their intention or willingness to continue on therapy. | The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. | Posted | Number | Percentage of participants | Week 19 |
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| Secondary | Number of Participants With Adverse Events | An adverse event (AE) is any untoward medical occurrence in a clinical investigation participant administered a product or medical device; the event need not necessarily have a causal relationship with the treatment or usage. A serious adverse event is any untoward medical occurrence at any dose that: Results in death; Is life-threatening (immediate risk of death); Requires inpatient hospitalization or prolongation of existing hospitalization; Results in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions); or Results in congenital anomaly/birth defect. The study physician used the adjective "severe" to those AEs that interfere significantly with participant's usual function. | The SB Analysis Set (SBAS) consisted of all participants who were enrolled into the SB phase of the study and received at least 1 dose of study medication; The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study medication in the DB phase. Both SBAS and FAS were included in this analysis. | Posted | Number | Participants | Baseline to Week 20 |
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| Secondary | Percentage of Participants With Suicidal Behaviour/Ideation | Percentage of participants with suicidal behavior/ideation were noted as Baseline, Weeks 6, 11, 15, 19 and 20. | The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study drug in the DB phase. | Posted | Number | Percentage of participants | Baseline, Weeks 6, 11, 15, 19 and 20 |
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Baseline to Week 20
The SB analysis set (SBAS) consisted of all participants who were enrolled into the SB phase of the study and received at least 1 dose of study medication; The FAS consisted of all participants randomized to the DB phase who received at least 1 dose of study medication in the DB phase. Both SBAS and FAS were included in this analysis
Not provided
| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Pregabalin CR DB | Possible doses for participants with normal creatinine clearance (CLcr) (≥60 mL/min) during the DB fixed dose phase were pregabalin CR 165 mg/day, 330 mg/day, 495 mg/day CR or 660 mg/day CR. Doses for participants with low CLcr (>30 - <60 mL/min) were pregabalin 82.5 mg/day, 165 mg/day, 247.5 mg/day, or 330 mg/day CR. | 7 | 208 | 7 | 208 | ||
| EG001 | Placebo DB | Participants received matching placebo | 3 | 205 | 1 | 205 | ||
| EG002 | Pregabalin CR SB | The participants with normal CLcr (≥60 mL/min) were treated with pregabalin 165 mg/day CR; those with low CLcr (>30 - <60 mL/min) received 82.5 mg/day pregabalin CR. Subsequently, the pregabalin doses were increased based on efficacy and tolerability at each weekly visit. | 17 | 801 | 202 | 801 |
| Term | Organ System | Source Vocabulary | Assessment Type | Notes | Statistical Information |
|---|---|---|---|---|---|
| Anaemia of chronic disease | Blood and lymphatic system disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Thrombocytopenia | Blood and lymphatic system disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Acute myocardial infarction | Cardiac disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Cardiac failure | Cardiac disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Gastrooesophageal reflux disease | Gastrointestinal disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Chest pain | General disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Acute sinusitis | Infections and infestations | MedDRA Version 18.0 | Non-systematic Assessment |
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| Bronchopneumonia | Infections and infestations | MedDRA Version 18.0 | Non-systematic Assessment |
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| Perirectal abscess | Infections and infestations | MedDRA Version 18.0 | Non-systematic Assessment |
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| Septic shock | Infections and infestations | MedDRA Version 18.0 | Non-systematic Assessment |
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| Pneumonia | Infections and infestations | MedDRA Version 18.0 | Non-systematic Assessment |
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| Urinary tract infection | Infections and infestations | MedDRA Version 18.0 | Non-systematic Assessment |
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| Femoral neck fracture | Injury, poisoning and procedural complications | MedDRA Version 18.0 | Non-systematic Assessment |
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| Liver function test abnormal | Investigations | MedDRA Version 18.0 | Non-systematic Assessment |
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| White blood cell count increased | Investigations | MedDRA Version 18.0 | Non-systematic Assessment |
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| Dehydration | Metabolism and nutrition disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Hyponatraemia | Metabolism and nutrition disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Back pain | Musculoskeletal and connective tissue disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Cerebrovascular accident | Nervous system disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Cerebrovascular disorder | Nervous system disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Sciatica | Nervous system disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Syncope | Nervous system disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Transient ischaemic attack | Nervous system disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Vertebrobasilar insufficiency | Nervous system disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Haematuria | Renal and urinary disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Renal mass | Renal and urinary disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Acute respiratory failure | Respiratory, thoracic and mediastinal disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Chronic obstructive pulmonary disease | Respiratory, thoracic and mediastinal disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Sexual abuse | Social circumstances | MedDRA Version 18.0 | Non-systematic Assessment |
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| Term | Organ System | Source Vocabulary | Assessment Type | Notes | Statistical Information |
|---|---|---|---|---|---|
| Dizziness | Nervous system disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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| Somnolence | Nervous system disorders | MedDRA Version 18.0 | Non-systematic Assessment |
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Pfizer has the right to review disclosures, requesting a delay of less than 60 days. Investigator will postpone single center publications until after disclosure of pooled data (all sites), less than 12 months from study completion/termination at all participating sites. Investigator may not disclose previously undisclosed confidential information other than study results.
| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Pfizer ClinicalTrials.gov Call Center | Pfizer, Inc | 1-800-718-1021 | ClinicalTrials.gov_Inquiries@pfizer.com |
| ID | Term |
|---|---|
| D051474 | Neuralgia, Postherpetic |
| ID | Term |
|---|---|
| D009437 | Neuralgia |
| D010523 | Peripheral Nervous System Diseases |
| D009468 | Neuromuscular Diseases |
| D009422 | Nervous System Diseases |
| D010146 | Pain |
| D009461 | Neurologic Manifestations |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
Not provided
Not provided
| ID | Term |
|---|---|
| D000069583 | Pregabalin |
| ID | Term |
|---|---|
| D005680 | gamma-Aminobutyric Acid |
| D000613 | Aminobutyrates |
| D002087 | Butyrates |
| D000144 | Acids, Acyclic |
| D002264 | Carboxylic Acids |
| D009930 | Organic Chemicals |
| D000596 | Amino Acids |
| D000602 | Amino Acids, Peptides, and Proteins |
Not provided
Not provided
| Protocol and GCP non-compliance |
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| Reason Unspecified |
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| Withdrawal by Subject |
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| Lost to Follow-up |
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| Lack of Efficacy |
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| Adverse event not related to study drug |
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| Adverse event related to study drug |
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| Title | Measurements |
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| 45-64 years |
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| OG002 | Pregabalin CR SB | The participants with normal CLcr (≥60 mL/min) were treated with pregabalin 165 mg/day CR; those with low CLcr (>30 - <60 mL/min) received 82.5 mg/day pregabalin CR. Subsequently, the pregabalin doses were increased based on efficacy and tolerability at each weekly visit. |
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