Track topics on Twitter Track topics that are important to you
To compare the efficacy and safety of Korean botulinum toxin A (KbtxA, Pacific Pharmaceuticals, Korea) against Botox in the treatment of essential blepharospasm, we performed a double-blinded, randomized, comparative trial comparing KbtxA and Botox for treatment of blepharospasm in 60 patients of the intention to treat population and 52 patients (26 patients from each group) of the per protocol population. The improvement of severity of spasm (SS) at 4 weeks post-injection as a primary efficacy outcome, qualifying non inferiority to the control group, Changes in eyelid closure force (CF) and functional visual status (FVS) after injection for secondary efficacy outcomes, and adverse effects for safety evaluation. Improvement of SS was noted in 90.3% of the KbtxA group and 86.2% of the Botox group. There were no significant differences between treatment groups in the changes of CF and FVS after injection (p>0.05). Adverse effects developed in 16.1% of the KbtxA group and 27.6% of the Botox group, but no serious adverse events were found in either group. KbtxA was not inferior to Botox in treatment efficacy and was clinically safe with no serious adverse effects when used to treat essential blepharospasm.
Severity of spasm was graded clinically from grade 0 to 4. Primary efficacy outcome was assessed as the number (%) of patients with improved SS of more than 1 score at 4 weeks post-injection. Secondary efficacy outcome measures included the change in scores from baseline on the SS, closing force of eyelids, and functional visual status at 4 weeks post-injection. The duration of action (days), the time interval between injection and the moment that the patient felt the need for retreatment were also assessed as secondary efficacy outcomes.
The number (%) of patients with improvement of SS (primary efficacy outcome) and the change in scores from baseline at 4 weeks post-injection on the severity of spasm, closing force of eyelids, and functional visual status scores were not different between the KbtxA and Botox groups in the analysis of both the ITT and PP populations. Also, the duration of action was similar following KbtxA and Botox injections (two sample t-test, p=0.835). For the non-inferiority trial on primary efficacy outcome, KbtxA was not inferior to Botox in either the ITT or PP populations, as the lower limit of the 95% confidence interval (-1.76% for ITT, -1.64% for PP) was over the -15% threshold.
Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
Korean Botulinum toxin type A (KbtxA) and Botox injection
Sang Yeul Lee
Korea, Republic of
Published on BioPortfolio: 2014-08-27T03:30:26-0400
This study examines botulinum toxin (BOTOX, or BTX) for the treatment of muscle twitches and spasticity associated with cerebral palsy in children. Botulinum toxin is a naturally occurring...
The objective of this study is to compare the field of effects of the botulinum toxins (Dysport® and Botox®) using two equivalence-ratios and to gather supportive information, such as mo...
Humeral lateral epicondylitis or tennis elbow is a common painful elbow disorder. The cause of tennis elbow is the chronic overload of bone-tendon junction. High prevalence of tennis elbow...
This is a safety and efficacy study of BOTOX® (Botulinum Toxin Type A) in the Treatment of Adult Korean Patients with Urinary Incontinence due to Neurogenic Detrusor Overactivity or Overa...
The purpose of this study is to determine the effectiveness of treatment of idiopathic clubfoot utilizing Botulinum Toxin Type A (Botox). This is not a hypothesis-generating study as we a...
Botulinum toxin is recognised as the gold standard for the treatment of essential blepharospasm and hemifacial spasm, which is similar in effect in synkinesis after facial nerve palsy. The injection i...
To evaluate the cellular and matrix effects of botulinum toxin type A (Botox) on mandibular condylar cartilage (MCC) and subchondral bone.
The aim of this study was to compare the analgesic effectiveness of 1 month injection after botulinum toxin in the pectoralis major muscle or subscapularis.
To assess the outcomes of switching to a different brand of botulinum toxin A (BTA, from Botox® to Dysport®) in case of failure of intradetrusor injections (IDI) of Botox® in the treatment of neuro...
Intramuscular injection of botulinum toxin can be painful for some patients. This may be due either to a broken skin, stimulation for locating, or injecting the product. The objective of this study wa...
A 150 kDa neurotoxic protein produced by CLOSTRIDIUM BOTULINUM. When consumed in contaminated food it can cause paralysis and death. In its purified form, it has been used in the treatment of BLEPHAROSPASM and STRABISMUS.
Subtype of CLOSTRIDIUM BOTULINUM that produces botulinum toxin type G. Though it has been isolated from soil, no outbreaks involving this type have been recognized.
Subtype of CLOSTRIDIUM BOTULINUM that produces botulinum toxin type C which is neurotoxic to ANIMALS, especially CATTLE, but not humans. It causes dissociation of ACTIN FILAMENTS.
Subtype of CLOSTRIDIUM BOTULINUM that produces botulinum toxin type D which is neurotoxic to ANIMALS, especially CATTLE, but not humans.
Subtype of CLOSTRIDIUM BOTULINUM that produces botulinum toxin type B which is neurotoxic to humans and animals.
Of all the types of Dementia, Alzheimer's disease is the most common, affecting around 465,000 people in the UK. Neurons in the brain die, becuase 'plaques' and 'tangles' (mis-folded proteins) form in the brain. People with Al...