A Prospective Randomized Placebo-Controlled Double Blind Clinical Trial to Evaluate the Safety and Efficacy of CLBS03 (Autologous Ex Vivo Expanded Polyclonal Regulatory T-cells) in Adolescents With Recent Onset Type 1 Diabetes Mellitus (T1DM)

This clinical trial will explore the safety and effect of autologous ex vivo expanded polyclonal regulatory T-cells on beta cell function in patients, aged 8 to 17, with recent onset T1DM. Other measures of diabetes severity and the autoimmune response underlying T1DM will also be explored. Eligible subjects will receive a single infusion of CLBS03 (high or low dose) or placebo.