Effectiveness of golimumab intensification in ulcerative colitis: A multicentric prospective study

INTRODUCTION

Loss of response to golimumab occurs in nearly 40% of patients with ulcerative colitis (UC). Unlike others anti-TNF, no study has reported a correlation between serum golimumab level and response to drug intensification. The objective of this study was to evaluate the effectiveness and safety of golimumab intensification and to identify the best threshold of serum golimumab before drug intensification predictive of response.

PATIENTS AND METHODS

We included all consecutive patients with active UC with loss of response to golimumab in a prospective multicentric cohort study. Patients with loss of response at 50 mg q4 weeks (W) and 100 mg q4W underwent therapeutic intensification at 100 mg q4W and 100 mg q2W, respectively. Effectiveness and safety were assessed between Weeks 2 and 4 (visit 2) and between Weeks 4 and 8 (visit 3) after intensification. Serum level and anti-golimumab antibodies were evaluated at each medical visit (Lisa Tracker, Theradiag France).

RESULTS

A total of 47 UC patients (Female, 50%; median age, 39 years (IQR, 27-52)) treated with golimumab for a median of 20.4 weeks (IQR, 10.7-38.3) were included. The median partial Mayo score was 6 (IQR, 5-7), and the median endoscopic Mayo score was 3 (IQR, 2-3). The median golimumab serum level before intensification was 2.23 μg/mL (IQR, 1.02-3.96) and only one patient (2.1%) had anti-drug antibodies. At Visit 2 (Week 2-4), 40% patients experienced clinical response, 10% clinical remission, 33% endoscopic response and 23% endoscopic remission. At Visit 3 (Week 4-8), 44% of patients had clinical response, 22% of patients had clinical remission, 45% of patients had endoscopic response, and 41% of patients had endoscopic remission. The median golimumab levels before intensification do not differ between responders and non-responders (2.13 μg/ml (0.76-2.76) and 3.37 μg/ml (IQR, 1.08-4.67), respectively; p = 0.14) assessed at Visit 3. Golimumab intensification to 100 mg q4W (vs q2W) (OR 1.98, 95% CI [1.06-3.70]; p = 0.032) was significantly associated with clinical remission at Visit 3. Serum drug level at baseline or the presence of antidrug antibodies were not associated with clinical or endoscopic remission/response. Two serious adverse events (one infection and one UC flare) were reported during the 24-week follow-up.

CONCLUSION

In this prospective multicentric study, half of patients recaptured response following golimumab intensification in UC. Therapeutic drug monitoring did not predict response after optimisation of golimumab.

Foreign body granuloma of the penis caused by occupational glass fibre exposure

We report a patient who presented with the suspected diagnosis of syphilis. Clinical findings included a penile ulcer, positive history of syphilis more than 20 years ago, and positive syphilis serology (TPHA, FTA-Abs). A biopsy showed a plasma-cell rich inflammation with granuloma formation. Since a birefractory structure was observed in the biopsy possibly corresponding to a foreign body, the patient's occupational exposure was investigated. Working in the fiber reinforced plastics industry, he was heavily exposed to glass fibre that was even detected on the inside of his underwear. Taking the serological pattern into account that was not consistent with active syphilis, a penile ulcer following a foreign body reaction was diagnosed. This case report demonstrates the difficulties of differentiating foreign body granuloma of the genital region from venereal diseases with granuloma formation.