Scientific corner

Adsorptive Granulocyte and Monocyte Apheresis Is Effective in Ulcerative Colitis Patients Both with and without Concomitant Prednisolone

Keiji Matsuda 1 2Kohei Ohno 1Yuka Okada 1Takahiro Yagi 1Mitsuo Tsukamoto 1Yoshihisa Fukushima 1Atsushi Horiuchi 1Ryu Shimada 1 2Tsuyoshi Ozawa 1 2Tamuro Hayama 1 2Takeshi Tsuchiya 1 2Junko Tamura 1Hisae Iinuma 1Keijiro Nozawa 1 2Hitoshi Aoyagi 2 3Akari Isono 2 3Koichiro Abe 2 3Shinya Kodashima 2 3Takatsugu Yamamoto 2 3Yoshitaka Kawasaki 4Yoshifuru Tamura 4Yuko Sasajima 5Fukuo Kondo 5Yojiro Hashiguchi 1 2 , Inflamm Intest Dis, 2020 Feb;5(1):36-41.

The effect of GMA with concomitant PSL (Prednisolone) and that of GMA without PSL were not different, and GMA was effective irrespective of PSL administration. The present study showed that GMA had efficacy and led many UC patients treated by PSL to be steroid free with no safety concern in the real world, although there is the possibility of recruitment bias due to the retrospective nature of the study.

Scientific corner

SY3-04 Real-world experiences of cytapheresis therapy for ulcerative colitis; results from large-scale multicenter observational studies

Taku Kobayashi

poster at ISFA 2019 pag 53

There are two types of extracorporeal therapy for treating active ulcerative colitis (UC), granulocyte and monocyte adsorption (GMA) and leukocytapheresis (LCAP). Although Sawada et al reported the efficacy of LCAP by the randomized controlled trial (Sawada K et al. Am J Gastroenterol 2005), the larger sham-controlled multicenter trial of GMA failed to prove its efficacy (Sands BE et al. Gastroenterol 2008). Therefore, evidence to show their efficacy relies more on the real-world data, including the post-marketing surveillance (PMS). The large-scale PMS for LCAP was named as REFINE study, involving 847 patients from 116 medical facilities in Japan (Yokoyama Y, Kobayashi T et al. J Crohn Colitis 2014). Adverse events were seen only in 10.3% and the vast majority were mild. The overall clinical remission rate was 68.9%, and the mucosal healing rate was 62.5%. These results were very consistent with the results from PMS of 697 patients treated with GMA, which also demonstrated its real-world effectiveness and safety (Hibi T et al. Dig Liver Dis 2008). In addition, a retrospective observational study aimed to evaluate the clinical outcome at 1 year and identify risk factors for relapse after LCAP was recently conducted among patients who had achieved remission in the PMS (Kobayashi T et al. J Gastroenterol 2018). The 1-year cumulative relapse free rate was 63.6%. Following LCAP, a high clinical activity and a high leukocyte count were associated with a greater risk of relapse. Intensive LCAP was associated with favorable long-term outcomes in corticosteroidrefractory patients. The response rate of re-treatment upon relapse was as high as 85%. These results on the risks of relapse as well as effectiveness of re-treatment may help to overcome the weakness of cytapheresis therapy in maintaining remission. Results from the clinical trial evaluating the clinical efficacy of intermittent maintenance cytapheresis therapy are also warranted.

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