NCT02012933

3,4-Diaminopyridine for Lambert-Eaton Myasthenic Syndrome (LEMS) and Congenital Myasthenia (CM)

3,4-Diaminopyridine for Lambert-Eaton Myasthenic Syndrome and Congenital Myasthenia

• Status: No Longer Available
• Phase: —
• Study type: Expanded Access
• Enrollment: —
• Sponsor: Oregon Health and Science University · Academic / Other
• Sex: All
• Age: 2 Years
• Healthy volunteers: —

Summary

Lambert-Eaton Myasthenic Syndrome (LEMS) is a rare autoimmune disorder which affects the nerve-muscle junction. The major symptoms of LEMS are progressive muscle weakness. Many patients experience other symptoms like dry mouth or impotence. Congenital Myasthenia (CM) is an inherited disorder with similar affects and symptoms. 3,4-Diaminopyridine (DAP) is an experimental drug that has improved strength in some subjects with (LEMS). There are no other accepted treatments for LEMS and DAP has relatively few side effects.

Detailed description

Subjects with clinically confirmed LEMS or CM will receive 3,4-diaminopyridine (3,4 DAP) by mouth in slowly increasing doses. Treatment will begin with 5-10 mg three times a day. A common final dosage is 15-20 mg four or five times a day, as clinically needed, and if tolerated. The upper limit is a total of 100 mg/day. Subjects will be monitored for strength and side effects via routine clinic visits at intervals of one month for the first three months, then every three months for the first year, and at least every six months thereafter. Treatment will be continued indefinitely if a good clinical response is achieved and side effects are tolerable.

Conditions

• Lambert-Eaton Myasthenic Syndrome (LEMS)
• Congenital Myasthenia (CM)

Interventions

Type	Name	Description
DRUG	3,4-diaminopyridine	10mg tablets for up to 100mg per day

Timeline

• First posted: 2013-12-17
• Last updated: 2019-12-11

Locations

1 site across 1 country: United States