To examine the clinical efficacy and safety of ultra-high dose (50mg, im, twice a week) methylcobalamin in retarding the progression of symptoms in amyotrophic lateral sclerosis (ALS) patients, we enroll ALS patients diagnosed by Updated Awaji Criteria within 12 months after the clinical onset. First they are followed for 12 weeks with Amyotrophic Lateral Sclerosis Functional Rating Scale-Revised (ALSFRS-R) scores, and only those who exhibit drops of 1-2 points are allowed to enter into the test period. A total of 128 patients are randomized and the half having placebo. They are blindly evaluated for drops of ALSFRS-R in 16 weeks, as the primary outcome. After this, all subjects receive methylcobalamin.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
130
Patients receive methylcobalamin 50mg intramuscular injection twice a week.
Patients receive saline solution intramuscular injection twice a week.
Nagoya University Hospital
Nagoya, Aichi-ken, Japan
Miyoshi Neurological Clinic
Miyoshi, Hiroshima, Japan
Sapporo Medical University Hospital
Sapporo, Hokkaido, Japan
Kobe Central Munincipal Medical center
Kobe, Hyōgo, Japan
Ioh National Hospital
Kanazawa, Ishikawa-ken, Japan
Kitasato University East Hospital
Sagamihara, Kanagawa, Japan
Shiga Medical University Hospital
Ōtsu, Shiga, Japan
Chiba University Hospital
Chiba, Japan
Murakami Karindo Hospital
Fukuoka, Japan
Okayama University Hospital
Okayama, Japan
...and 6 more locations
Treatment Phase: ALSFRS-R
Drop of Amyotrophic Lateral Sclerosis Functional Rating Scale-Revised (maximum or normal 48 and minimum 0; higher values represent better condition)
Time frame: during 16 weeks of test period
Treatment Phase: time to event
time from the randomization to the onset of any of the event (24-hour use of noninvasive respiratory support, use of invasive respiratory support, or death)
Time frame: during 16 weeks of test period
Treatment Phase: %Functional Vital Capacity (FVC)
changes of per cent Functional Vital Capacity
Time frame: during 16 weeks of test period
Treatment Phase: homocystein
changes of serum levels of homocystein
Time frame: during 16 weeks of test period
Treatment Phase: Manual Muscle Testing (MMT)
changes of sum of Medical Research Council scales of manual muscle testing, ranging 5 (normal), 4, 4+, 3, 2, 1, 0 (minimal) ( for analysis each is converted to 6, 5, 4, 3, 2, 1, 0) of the 11 muscles in the limbs (5x2) and neck(1)
Time frame: during 16 weeks of test period
Treatment Phase: Norris scale
changes of Norris scale (39 normal - 0 worst)
Time frame: during 16 weeks of test period
Treatment Phase: Grip Power
changes of sum of grip power in kilograms on both sides
Time frame: during 16 weeks of test period
Treatment Phase: 40-item Amyotrophic Lateral Sclerosis Assessment Questionnaire (ALSAQ-40)
changes of sum of ALSAQ-40 (40-item Amyotrophic Lateral Sclerosis Assessment Questionnaire) score (40 normal - 200 worst)
Time frame: during 16 weeks of test period
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