# Induction Therapy With Oral Tacrolimus Provides Long‐Term Benefit in Thiopurine‐Naïve Refractory Ulcerative Colitis Patients Despite Low Serum Albumin Levels

## TL;DR

Oral tacrolimus helps long-term remission in ulcerative colitis patients, even those with low albumin and no prior thiopurine use.

## Contribution

Shows tacrolimus provides sustained remission and lower costs in thiopurine-naïve refractory UC patients.

## Key findings

- 75% of patients achieved clinical remission within 8 weeks of tacrolimus treatment.
- 62 out of 72 patients had colectomy-free remission at the last visit.
- Medication costs over 3 years were significantly lower for tacrolimus than infliximab.

## Abstract

Oral tacrolimus is an effective treatment for refractory ulcerative colitis (UC). However, tacrolimus is underutilized because of the difficulties in transitioning to subsequent maintenance therapy and concerns about adverse events.

We evaluated the clinical outcomes, adverse events, and accumulated medication costs in consecutive 72 UC patients treated with tacrolimus.

Fifty‐five (76%) patients with pancolitis and 43 (60%) patients with acute severe disease were entered. Fifty‐four (75%) achieved clinical remission 8 weeks after starting tacrolimus. At the last visit, 62 (86%) patients had colectomy‐free remission, and 55 (76%) patients had corticosteroid‐free remission. Eighteen (25%) patients maintained remission without additional treatment after tacrolimus discontinuation. Patients with continuous remission had a significantly lower history of thiopurine use and lower serum albumin levels at the induction of tacrolimus than patients with failure to induce or maintain remission. No severe adverse events due to tacrolimus treatment were observed. The accumulated medication costs over 3 years in patients with continuous remission after the start of tacrolimus were lower than those in patients with induction and maintenance of infliximab (p < 0.001).

Tacrolimus could have an irreplaceable role in the era of biologic therapies, especially for refractory UC patients with thiopurine‐naïve and low serum albumin levels.