Phase 2 Product Candidate for Type I Diabetes

Caladrius is currently focused on developing a T-regulatory (Treg) cell-based therapy (CLBS03, formerly NBS03D) for the treatment of type 1 diabetes mellitus (T1DM), using the patient’s own numerically and functionally enhanced Tregs. At the time of T1DM diagnosis, up to 20% of the patient’s insulin producing beta cells remain in the pancreas, and if protected from immune destruction, can be salvaged, and restored to function, thus regaining glycemic control and decreasing long-term risks of related complications. Restoration of beta cells viability and function can also potentially improve the patient’s quality of life by decreasing the patient’s dependence on exogenous insulin injections, and risk for major hypoglycemia and long term micro- and macrovascular complications.

A Phase 1 open-label uncontrolled dose-escalating study conducted at UCSF and Yale provided evidence for safety and tolerability of autologous expanded polyclonal Treg cell therapy (produced in a comparable way to CLBS03) in 14 adults with established T1DM. Infused Tregs were detected in peripheral circulation for more than 6 months, indicating sustainability post administration. In addition, a Polish Phase 1 open-label controlled study of autologous expanded polyclonal Treg cell therapy in 22 children aged 5-18 with new onset T1DM similarly demonstrated safety and tolerability while providing evidence of potential bioactivity, as fasting C-peptide level (an indicator of beta cell function) was maintained, and increased rates of remission and insulin independence were observed in the Treg treatment group. Based on these findings, Caladrius received FDA approval to conduct a randomized, double-blind, placebo-controlled Phase 2 study to further investigate the CLBS03 therapy in adolescents with new onset T1DM.

The Sanford Project Trex Study: Phase 2 in adolescents with T1D


Double blind, placebo controlled, randomized (1:1:1)

Adolescent patients with recent onset of T1D ages 12 to 18

Primary Endpoint

Preservation of C-peptide at 52 weeks in comparison to placebo


80% power to detect 50% attenuation in fasting c-peptide levels

Study Size

18 patient cohort with early interim safety analysis, total of 111 patients to be enrolled

~11 U.S. sites


CLBS03: Dose cohorts of 10 or 20 million cells/kg


Placebo infusion

The Sanford Project: Trex Study Executive Steering Committee