Approximately 21 subjects with amyotrophic lateral sclerosis (ALS) will be randomized (6 to 1) to receive by mouth seven morning doses of CC100 or placebo for 7 days. Subjects are required to stay in the Clinic for approximately 9 hours following the first and last dose. Subjects will also have a mid-week clinic visit and will be contacted by phone within 3 to 5 days after the last dose.

Funding Source - FDA OOPD

Primary objective: to assess the safety and tolerability of multiple doses of orally administered CC100 in subjects with amyotrophic lateral sclerosis (ALS). Secondary objectives: to determine pharmacokinetics and pharmacodynamics of CC100 in plasma after single and after multiple doses; and to determine short-term effects of CC100 on potential blood-cell ALS biomarkers.

Study Design: Phase 1 double-blind, randomized, placebo-controlled multiple-dose of three CC100-dose cohorts. Approximately 18 subjects will receive CC100. Approximately 3 subjects will be randomized to placebo (across 3 cohorts). Periodic Assessment Committee safety reviews. Note: Participation will not exclude subjects from future CC100 studies Criteria for Evaluation: Safety Endpoints: Adverse events, blood chemistry, hematology, urinalysis, vital signs, 12-lead ECGs. Pharmacokinetic (PK)/Pharmacodynamic (PD): Plasma for CC100 concentrations (PK). Blood collected at baseline and after each subject's last dose will be assayed for potential biomarker(s). Stored specimens will be de-identified or combined for validating diagnostic tools/assays related to ALS. Statistical Methods: A minimum of 6 subjects per CC100 dose group and 3 placebo-dosed subjects (total across cohorts) are considered sufficient to evaluate initial safety and tolerability for the cohorts. Pharmacokinetic parameter estimates will be calculated by standard noncompartmental methods of analysis. Absolute bioavailability of administration will be estimated based on the total area under the time- concentration curve (AUC0-∞).

Inclusion Criteria:

• Have definite or probable ALS with a forced vital capacity of >60% predicted.
• Men must practice a reliable method of birth control during study and for 2 weeks following study. Women must be non-fertile or post-menopausal.
• Riluzole is allowed if dose has been stable for at least 30 days. Other allowed medications: lipid-lowering drugs, anti-hypertensives, anti-depressants, oral medications for type II diabetes, estrogen replacement therapy, thyroid replacement therapy, antihistamines, antacids, nonsteroidal anti-inflammatory drugs (except indomethacin), histamine H2-receptor antagonists, proton-pump inhibitors, calcium supplements, topical eye medications, and topical antibiotics.

Exclusion Criteria:

• Greater than 250 pounds
• Have serious or unstable illnesses as determine by the investigator.
• Have current or a history of asthma or severe drug allergies or pollen allergy.
• Have had serious infectious disease affecting the brain within the preceding 5 years; or have existing evidence of serious infection.
• Have laboratory test values that are considered clinically significant as determined by the investigators.
• Have ECG abnormalities that are clinically significant.
• Have donated blood (a pint or more) or received an experimental drug within 30 days prior to dosing.
• Have a history of chronic alcohol or drug abuse within the past 2 years.

Single-site study