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To evaluate efficacy and safety of E2014 (2500U, 5000U, 10000U, placebo) in a multicenter, randomized, double-blind, parallel group comparative study by intramuscularly administering to patients with spasmodic torticollis. Primary endpoint for efficacy evaluation is changes in TWSTRS total scores from baseline measured at Week 4 and the clinical recommended dose will be examined with Williams multiple comparison. For safety evaluation, an inter group comparison (active drug and placebo) will be performed mainly focusing on incidence of adverse events, adverse drug reactions, and abnormal changes in laboratory parameters.
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Exclusion criteria
Patients who are botulinum toxin-resistant in previous exposures (primary no-responder*)
*If patients who were once responder to botulinum toxin treatment but thereafter became non-responder can be included in this study.
Patients whose passive range of motion in the neck is significantly narrowed due to cervical contracture or spondylosis.
Patients having only pure retrocollis- or anterocollis-associated symptoms.
Patients who received botulinum toxin agents within 4 months prior to study treatment of E2014, or those who show carry-over effect of previous treatment with botulinum toxin at the time of starting study administration even though the previous treatment was given 4 months or earlier.
Patients who were treated with narcotics or antibiotics that may potentiate effects of muscle relaxation (spectinomycin hydrochloride preparations, aminoglycosides, polypeptides, tetracyclines, lincomycins) within 4 months prior to study treatment.
Patients who started or altered the dose levels of the following agents (musculoskeletal relaxants, antispasm drugs, strong tranquilizers, benzodiazepines including similar drugs, anticholinergic drugs, antiparkinsonian drugs, antidepressants) within 4 weeks prior to study treatment.
Patients who received medical care(s) other than pharmacotherapies (surgical interventions, MAB, acupuncture, relaxation, etc.) prior to study treatment showing carry-over effect of these cares or unstable condition at the time of starting study treatment.
Patients who have a history of myectomy or neurectomy in the neck and/or shoulder.
Patients who have a history of hypersensitivity to E2014's ingredients (botulinum toxin type B, human serum albumin, sodium succinate buffer solution), or other type of botulinum toxins.
Patients with complication(s) or history of serious neurological or musculoskeletal disease (myasthenia, amyotrophic lateral sclerosis, etc.), cardiovascular disease (acute myocardial infarction, etc.), respiratory disease (COPD, etc.), renal disease (acute or chronic renal failure, etc.), hepatic disease (cirrhosis, etc.), gastrointestinal disease (paralytic ileus, etc.), dermatological disease (toxic epidermal necrosis, etc.), psychiatric disease (schizophrenia, alcohol or drug dependence, etc.), hematological disease (aplastic anemia, etc.), and/or infectious disease (hepatitis, syphilis, AIDS, etc.).
Patients with complication or history of malignant tumor(s).
Patients who participated in another clinical study within 30 days prior to obtaining informed consent for this study.
Women of pregnant, childbearing potential, childbearing intension during the study period, or lactating.
Others who are judged to be ineligible for study entry by the investigator or subinvestigator
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Data sourced from clinicaltrials.gov
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