TNX-102 capsules \[formerly known as very low dose (VLD) cyclobenzaprine\] at bedtime have shown promise as a treatment of fibromyalgia, but the drug required new formulation technology for bedtime use. The present trial was designed to assess the safety and efficacy of TNX-102 SL 2.8 mg tablets, taken daily at bedtime over 12 weeks to treat fibromyalgia.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
205
Patients will take 1 tablet of randomly assigned study drug sublingually each day at bedtime starting on Day 0 for 12 weeks.
Patients will take 1 tablet of randomly assigned study drug sublingually each day at bedtime starting on Day 0 for 12 weeks.
107 Scripps Drive
Sacramento, California, United States
Radiant Research, Inc.
Denver, Colorado, United States
Mean Change From Baseline in Weekly Average of Daily Pain Scores at Week 12
Daily pain scores were assessed using a 24-hour recall response provided by each patient via an interactive voice response system (IVRS) daily telephone diary. Average daily pain was measured using an 11-point (0-10) numerical rating scale (NRS), with higher scores representing worse pain. Jump to control was used to replace missing data in each treatment arm.
Time frame: Baseline, Week 12
30% Responder Analysis of IVRS NRS Pain Assessments at Week 12
The weekly averages of daily pain scores were calculated using the daily, 24-hour-recall, IVRS NRS pain assessments. Patients who had at least a 30% improvement from baseline to week 12 in weekly average of daily pain scores were considered responders.
Time frame: Baseline, Week 12
Change From Baseline to Week 12 in PROMIS T-score for Sleep Disturbance
The Patient-Reported Outcome Measurement Information System (PROMIS) sleep disturbance instrument consists of 8 items in which responses are scored 1 to 5 for each item. A higher score on 5 of the 8 items reflects a worse outcome, whereas a higher score on 3 items reflects an improved outcome; therefore, the directionality of the 8 item scores are first synchronized prior to calculation of the total raw score. PROMIS scores are presented as T-scores in which the raw score has been rescaled into a standardized score with a mean of 50 and a standard deviation of 10. Higher T-scores represent more of the concept being measured (in this case, sleep disturbance).
Time frame: Baseline, Week 12
Patient Global Impression of Change (PGIC) Responder Status ("Very Much Improved" or "Much Improved" vs All Other Categories) at Week 12
The PGIC is a 7-point scale (1=very much improved; 7=very much worse) that assesses the patient's perception of the overall change in his/her fibromyalgia symptoms since entering the study. Scores of 1 and 2 were considered responders.
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16176 Cortez Boulevard
Brooksville, Florida, United States
100 West Gore Street
Orlando, Florida, United States
3401 North Central Avenue
Chicago, Illinois, United States
71 Thomas Johnson Drive
Frederick, Maryland, United States
370 Faunce Corner Road
North Dartmouth, Massachusetts, United States
Clinical Pharmacology Study Group
Worcester, Massachusetts, United States
CRC of Jackson, LLC
Jackson, Mississippi, United States
University of Cincinnati College of Medicine
Cincinnati, Ohio, United States
...and 7 more locations
Time frame: Week 12
Change From Baseline to Week 12 in FIQ-R Total Score
The Fibromyalgia Impact Questionnaire (revised) FIQ-R is made up of 3 domains: functional (9 questions), overall (2 questions) and symptoms (10 questions). All questions are based on an 11-point numerical rating scale (NRS) of 0-10, with 10 being "worst." Total FIQ-R scores can range from 0-100, with higher scores reflecting worsening status. The patient's total score on the FIQ-R was assessed at Visits 2, 3, 4, 5, and 6 (Week 12). Jump to control was used to replace missing data in each treatment arm.
Time frame: Baseline, Week 12