Safety and Efficacy of CBX129801 in Patients With Type 1 Diabetes

Cebix

Status and phase: Completed; Phase 2

Conditions: Diabetic Peripheral Neuropathy

Treatments: Drug: CBX129801

Study type: Interventional

Funder types: Industry

Identifiers

NCT01681290

CBX129801-DN-201

Details and patient eligibility

About

The purpose of the study is to determine the beneficial effects of CBX129801 (PEGylated synthetic human C-peptide) following weekly subcutaneous administration for 12 months in type 1 diabetes mellitus patients (T1DM) with mild to moderate diabetic peripheral neuropathy (DPN).

Enrollment: 250 patients

Sex: All

Ages: 18 to 65 years old

Volunteers: No Healthy Volunteers

Inclusion and exclusion criteria

Key Inclusion Criteria:

• Give informed consent;
• 18-65 years old;
• Have type 1 diabetes mellitus for a minimum of 5 years, with a stable diabetic regimen (for at least 3 months);
• Have clinical signs of diabetic peripheral neuropathy at screening;
• Have abnormal sural nerve conduction observed bilaterally during screening;
• Be C-peptide deficient;
• Be in good general health (besides having type 1 diabetes mellitus);
• Practice effective contraception during and for at least 12 weeks after study participation;
• Have a body mass index (BMI) ≥18.0 and <35.0 kg/m2.

Key Exclusion Criteria:

• Any significant cardiovascular, hematological, lymphatic, immunologic, urologic, dermatologic, psychiatric, renal, hepatic, pulmonary, endocrine (except for diabetes mellitus), central nervous, gastrointestinal, or other major disease;
• Unstable or inadequate glucose control;
• Any clinically significant laboratory value at screening;
• Occurrence of a severe, unexplainable hypoglycemic event (defined as requiring the assistance of another individual) within 6 months of Day 0, or recurrent episodes of non-severe hypoglycemia (≥3 per week on average) that are deemed clinically significant by the Investigator;
• Have had an islet cell, kidney, and/or pancreas transplant;
• If female, is pregnant or lactating;
• History of alcohol or substance abuse within 2 years;
• Positive screen for hepatitis B, hepatitis C antibody, or human immunodeficiency virus (HIV) antibody;
• Initiation of treatment or change of dose of medication that could affect peripheral nerve function within 60 days;
• Previous treatment with CBX129801 or unmodified C-peptide;
• Receipt of an investigational product or therapeutic device, or participation in a drug research study, within a period of 30 days;
• Chronic use of oral steroids or use of Ampyra (dalfampridine) within 60 days.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

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250 participants in 3 patient groups, including a placebo group

CBX129801 High Dose

Experimental group

Description:

Solution for injection, 2.4 mg, weekly for 52 weeks

Treatment:

Drug: CBX129801

CBX129801 Low Dose

Experimental group

Description:

Solution for injection, 0.8 mg, weekly for 52 weeks

Treatment:

Drug: CBX129801

Placebo

Placebo Comparator group

Description:

Solution for injection, vehicle with no active, weekly for 52 weeks