Ten patients with motor neurone disease (MND, also known as amyotrophic lateral sclerosis or ALS) will be successively enrolled to one of two dose levels of IC14 (human chimeric monoclonal anti-CD14) intravenously for four doses. Patients must be within 3 years of MND diagnosis and have adequate respiratory function. Safety, tolerability, immunogenicity, and PK/PD will be measured. To evaluate feasibility of the endpoints, additional endpoints of ALSFRS-R, respiratory function tests, disease biomarkers and patient-reported outcomes will be measured.