A Study of AC-201 Controlled-Release Tablet (CR Tablet) in Patients With Gout

TWi Biotechnology

Status and phase: Completed; Phase 2

Conditions: Gout

Treatments: Drug: AC-201; Drug: Placebo; Drug: Febuxostat

Study type: Interventional

Funder types: Industry

Identifiers

NCT02287818

AC-201-GOU-002

Details and patient eligibility

About

The study is designed to test the urate-lowering effect, safety, and tolerability of AC-201CR in an initial dosing period, followed by the addition of a ULT to test the efficacy and safety of the combination and prophylaxis of gout flares during ULT.

Full description

AC-201CR is a control released formulation of AC-201 that in previous clinical studies showed potential dual effects in both reducing serum uric acid (sUA) and gout flares. The mechanism of action of AC-201 includes the inhibition of the production and activity of caspase-1 and interleukin-1β (IL-1β), and selective inhibition of re-absorption transporters in the kidney. The goal of gout treatment is to reduce serum uric acid (sUA) concentrations below the urate solubility limit while avoiding acute gout flares. However, the initiation of urate-lowering therapy (ULT) increases the occurrence of acute gouty arthritis flares. IL-1β plays a key role in mediating this inflammatory response.

Enrollment: 127 patients

Sex: All

Ages: 20 to 65 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Male or female age 20 to 65 years, inclusive.
2. Meets ≥6 of the 12 American College of Rheumatology preliminary criteria (1977) for the classification of acute arthritis of primary gout (Appendix 2), OR have proven tophus or documented monosodium urate (MSU) crystals in the joint fluid.
3. Serum uric acid ≥7.5 mg/dL and ≤10 mg/dL at screening with ≥1 gouty arthritis flare within one year prior to screening, OR serum uric acid ≥9 mg/dL and ≤10 mg/dL at screening with or without prior gout flares.

Exclusion criteria

1. Use of allopurinol, febuxostat, benzbromarone, probenecid, or sulfinpyrazone within 2 weeks prior to screening.
2. Occurrence of a gouty arthritis flare within 1 week prior to screening or during the screening period through baseline.
3. Use of colchicine within 1 week prior to screening.
4. Use of Glucocorticoids, NSAIDs or COX-2 inhibitors within 1 week prior to screening.
5. Allergy, contraindication, or intolerance to febuxostat.
6. Severe renal impairment.
7. Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) concentration >2 times the upper limit of laboratory normal range (>2x ULN) at screening.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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127 participants in 2 patient groups, including a placebo group

Placebo

Placebo Comparator group

Description:

Placebo plus Febuxostat

Treatment:

Drug: Febuxostat

Drug: Placebo

AC-201

Experimental group

Description:

AC-201 CR tablet plus Febuxostat

Treatment:

Drug: Febuxostat

Drug: AC-201