Sneha Annie Sebastian ¹, Oroshay Kaiwan ², Edzel L Co ³, Meghana Mehendale ⁴, Babu P Mohan

Spartan Med Res J. 2024 Sep 9;9(3):123397. doi: 10.51894/001c.123397. eCollection 2024.

Introduction: Ulcerative colitis (UC) is a chronic inflammatory bowel disorder (IBD) with periods of relapse and remission. Current advancements in clinical research have led to the development of more refined and effective medical therapy for UC.

Summary of the evidence: Traditional therapeutic agents such as 5-aminosalicylates (5-ASAs), sulfasalazine (SASP), corticosteroids, and immunomodulatory drugs have remained the gold standard for decades. However, their novel formulations and dosage regimens have changed their sequences in the medical management of UC. Several other novel drugs are in the final phases of clinical development or have recently received regulatory approval designed to target specific mechanisms involved in the inflammatory cascade for UC.

GMA has shown its efficacy in mild to moderate UC and refractory UC (steroid-dependent UC or biologic/immunologic resistant UC or lost their response to biologics) for remission induction.

Conclusions: This narrative review sought to provide a comprehensive knowledge of the potential benefits of standard and emerging therapies, including novel formulations, new chemical entities, and novel therapeutic approaches in managing UC. Keywords: Ulcerative colitis, 5- Aminosalicylic acid, sulfasalazine, corticosteroids, biologics, immunomodulators, novel formulations.

Walter Jauregui ¹, Yozahandy A Abarca ², Yasmin Ahmadi ³, Vaishnavi B Menon ⁴, Daniela A Zumárraga ⁵, Maria Camila Rojas Gomez ⁶, Aleeza Basri ⁷, Rohitha S Madala ⁸, Peter Girgis ⁹, Zahra Nazir ¹⁰

Cureus. 2024 Sep 3;16(9):e68569. doi: 10.7759/cureus.68569. eCollection 2024 Sep.

Psoriasis (PS) and inflammatory bowel disease (IBD) are immune-mediated chronic conditions that share pathophysiological processes, including immune system dysfunction, microbiome dysbiosis, and inflammatory pathways. These pathways result in increased turnover of epithelial cells and compromised barrier function. The assessment of the literature suggests that immunopathogenic mechanisms, such as tumor necrosis factor (TNF)-α signaling and IL-23/IL-17 axis dysregulation, are shared by PS and IBD. Clinical characteristics and diagnostic approaches overlap significantly, and advances in biomarker identification benefit both conditions. Current treatments, namely biologics that target TNF-α, IL-17, and IL-23, show promising results in decreasing inflammation and controlling symptoms. Precision medicine approaches are prioritized in prospective therapeutic procedures to tailor pharmaceuticals based on specific biomarkers, perhaps improving outcomes and minimizing side effects. This study thoroughly examines and evaluates the body of research on PS and IBD. Several papers were examined to compile data on clinical features, diagnosis, therapies, pathophysiology, epidemiology, and potential future therapeutic developments. The selection of articles was based on three methodological qualities: relevance and addition to the knowledge of IBD and PS. The retrieved data were combined to provide a coherent summary of the state of the knowledge and to spot new trends. The overview of the latest studies demonstrates that both PS and IBD share pathophysiological foundations and therapeutic approaches. With a spotlight on particular biomarkers, advances in precision medicine provide a promising path toward enhancing therapeutic effectiveness and minimizing side effects.

in CD Moderate to severe Oral corticosteroids. Consider enteral nutritional therapy. TNF inhibitors are recommended to be considered for steroid-dependent or refractory patients. If pharmacotherapy or nutrition therapy is ineffective or unable to adapt, the combination with granulocyte monocyte apheresis (GMA) can be considered.

Hiromu Morikubo, Ryuta Tojima, Tsubasa Maeda, Katsuyoshi Matsuoka, Minoru Matsuura, Jun Miyoshi, Satoshi Tamura & Tadakazu Hisamatsu Sci Rep 14, 4386 (2024). doi.org=10.1038/s41598-024-55126-1

Predicting the therapeutic response to biologics before administration is a key clinical challenge in ulcerative colitis (UC). We previously reported a model for predicting the efficacy of vedolizumab (VDZ) for UC using a machine-learning approach. Ustekinumab (UST) is now available for treating UC, but no model for predicting its efficacy has been developed. When applied to patients with UC treated with UST, our VDZ prediction model showed positive predictive value (PPV) of 56.3% and negative predictive value (NPV) of 62.5%. Given this limited predictive ability, we aimed to develop a UST-specific prediction model with clinical features at baseline including background factors, clinical and endoscopic activity, and blood test results, as we did for the VDZ prediction model. The top 10 features (Alb, monocytes, height, MCV, TP, Lichtiger index, white blood cell count, MCHC, partial Mayo score, and CRP) associated with steroid-free clinical remission at 6 months after starting UST were selected using random forest. The predictive ability of a model using these predictors was evaluated by fivefold cross-validation. Validation of the prediction model with an external cohort showed PPV of 68.8% and NPV of 71.4%. Our study suggested the importance of establishing a drug-specific prediction model.

I Rodríguez-Lago, D Ginard, R J Díaz Molina, M Vicuña, E Domenech, M Abanades, O Moralejo Lozano, G Bastida, A D Sánchez Capilla, E Iglesias, F Rancel-Medina, M D M Blasco, M Bosca-Watts, M Calvo Iñiguez, C Herrera deGuisé, E Leo, A Viejo Almanzor, V Hernández Ramirez, C Suárez Ferrer, L Quilez Pérez, M Muñoz, F Fernández Pérez, J M Huguet, P Fradejas, C López Ramos, A M Fuentes Coronel, C Reygosa Castro, N Rull Murillo, P Zapico, J L Cabriada
Journal of Crohn’s and Colitis, Volume 18, Issue Supplement_1, January 2024, Page i1011, doi.org=10.1093/ecco-jcc/jjad212.0641

Background
The clinical efficacy of granulocyte and monocyte adsorptive apheresis (GMA) with Adacolumn in patients (pts) with inflammatory bowel disease (IBD) has been reported in several clinical trials (CT), with significant clinical remission rates. However, evidence on real-world effectiveness of GMA with Adacolumn in ulcerative colitis (UC) or Crohn’s disease (CD) patients who were underrepresented in CT is still limited.

Methods
GRACE is a multicentric, prospective observational study conducted at 31 centres in Spain. The study included adults (≥18 years) diagnosed with UC or CD who had been scheduled to receive GMA with Adacolumn in clinical practice. The study consisted of a baseline (GMA initiation) and 3 follow-up visits at 4, 24, and 48 weeks after the last GMA session. The primary endpoint is the steroid-free remission rate at 24 weeks. This interim analysis is focused on clinical characterization of patients and their management and outcome 4 weeks after GMA treatment.

Results
A total of 95 evaluable patients were included at data cut-off date (25 Sept 2023) (median age: 54 years; 50% men: 81% outpatients). Overall, 89.4% (n=84) of patients had UC, being moderate-to-severe in 85.5%; 57,8% had pancolitis, and the median Mayo score was 5 (interquartile range [IQR], 3-6). Out of the 10 patients (10.6%) with CD, all had B1, and 3 patients had L1, 4 L2 and 3 L3. Overall, 17% had extraintestinal manifestations. Regarding IBD-related therapy, 52.6% of patients had previously received anti-TNF agents, 37.9% thiopurines, and 17.8% JAK inhibitors. Overall, 85.3% of patients received concomitant treatment with GMA, most commonly 5-ASA (60%), corticosteroids (51,6%), ustekinumab (20%), vedolizumab (17.9%), and anti-TNF therapy (11.6%). A total of 71 patients reached the 4-week visit after receiving a median of 10 (IQR, 8-10) GMA sessions (weekly: 26.3%, biweekly: 36.8%, and weekly/biweekly: 31.6%). At week 4, clinical remission was achieved by 50.7% of patients (UC: 49.2%; CD: 66.7%), being 50% and 53.3% in patients concomitantly treated with ustekinumab and vedolizumab. Steroid-free remission rate was 26.1% (UC: 22.2%; CD: 66.7%) at week 4. Overall, 11,2% of patients experienced AEs related to GMA, most of them being mild (73%) or moderate (22.4%). Most common AEs were headache and asthenia. No SAEs were observed.

Conclusion
Preliminary data at 4 weeks show that Adacolumn is a safe and effective treatment in a cohort of IBD refractory patients with previous failure to multiple therapies including thiopurines, biologics and JAK inhibitors. Half of patients were concomitantly treated with biologics, and their clinical remission rate was similar to the overall population. Long-term results of this study (48 weeks) are required to confirm these findings.

F Kenta, S Kensuke, T Shun, W Ryosuke, N Yusuke, Y Ren, S Kentaro, S Itsuki, O Hisashi, M Takuto
Journal of Crohn’s and Colitis, Volume 18, Issue Supplement_1, January 2024, Page i1807, doi.org=10.1093/ecco-jcc/jjad212.1126

Background
Granulocyte and Monocyte Adsorption Apheresis (GMA) is one of the valuable non-immunosuppressive therapies in the treatment of ulcerative colitis (UC). However, due to the limited number of facilities where GMA can be performed, there are few reports on the combined effects of GMA and prednisolone (PSL), the frequency of GMA implementation or predictive factors for the effectiveness. In this study, we examined the combined effect of GMA and PSL as a remission induction therapy, the frequency of GMA and predictive factors.

Methods
A retrospective observational study was conducted at Kushiro Rosai Hospital. We analyzed clinical data from UC patients who underwent GMA from February 2015 to May 2023.

Results
The study included 54 patients (30 males and 24 females), with a median age of 48 years and a median disease duration of 2 years. The median Lichtiger-CAI (L-CAI) was 8. There were 43 patients of pancolitis. There were 51 biologics-naïve patients and 3 biologics-experienced patients. Concomitant medications included 5-ASA agents in 21 patients, immunomodulators in 7 patients, and PSL in 31 patients. The median CRP was 1.19 mg/dl and the median albumin was 3.5 g/dl. Adverse events were observed in 3 patients (fatigue, dizziness, palpitations). The median number of GMA sessions was 10, with 33 patients undergoing twice weekly and 9 patients three times weekly. The clinical remission rate was 80% (43/54), and the clinical response rate was 89% (48/54), with a significant improvement in the median L-CAI from 8 to 3 before and after GMA (P<0.001). In the comparison between the PSL concomitant group and the non-PSL group, the clinical remission rate was 83.9% (26/31) in PSL group and 73.9% (17/23) in non-PSLgroup (P=0.369). The clinical response rate was significantly higher in the PSL group (87% (27/31)) than in non-PSL group (52.2% (12/23)) (P=0.004). There was no significant difference in the clinical remission/response rate between the group that underwent GMA twice a week (76.9% (30/39)/84.6% (33/39)) and three times a week (77.8% (7/9)/77.8% (7/9)). In univariate analysis, biologics-naïve was extracted as a contributing factor to clinical remission. The cumulative remission rate at 52 weeks was 72% overall. There was no significant difference in the cumulative remission rate between the PSL group (76.8%) and the non-PSL group (67.6%) (P=0.524). There was also no significant difference between the twice-weekly group (75%) and the three-times-weekly group (57.1%) (P=0.236). Conclusion GMA for UC was found to be useful and safely performed as a remission induction therapy. Concomitant use of PSL increased the clinical response rate. The frequency of GMA showed that three times per week was as effective as two times per week.

I Rodríguez-Lago, C Herrera-deGuise, M Boscá-Watts, C Rodríguez, E Leo, M Calvo, F Cañete, S Chacón, C Cuarán, A Elorza, E Guerra, E Iglesias, D Sánchez, M Barreiro-de Acosta, D Ginard, J L Cabriada Journal of Crohn’s and Colitis, Volume 18, Issue Supplement_1, January 2024, Page i1135, doi.org=10.1093/ecco-jcc/jjad212.0712

Background
Granulocyte–monocyte apheresis (GMA) selectively removes activated leukocytes and immune mediators, and it has shown to be safe and effective in treating ulcerative colitis (UC). Previous reports have also described its combination with biologics, mainly with anti-TNF.

Methods
The aim of our study was to evaluate the clinical efficacy and safety of combining GMA after primary non-response (PNR) or loss of response (LOR) to ustekinumab (UST) in patients with UC. A retrospective, multicentric study was performed in 12 IBD Units, including all patients with refractory UC who received combined GMA plus UST. The number of GMA sessions, its frequency, filtered blood volume and time of each session were compiled, along with the clinical data. Efficacy was assessed 1 and 6 months after finishing the GMA by partial Mayo score, CRP and faecal calprotectin. Data regarding UST intensification, need for new immunomodulators/biologics and surgery were also compiled. Descriptive statistics and non-parametric tests were used in the statistical analysis.

Results
Nineteen patients were included (15 UC, 2 Crohn’s disease, 2 unclassified IBD; median age 48 years (IQR, 36-63); 68% male). At baseline, 78% were receiving steroids and 23% immunomodulators. Most patients (89%) had prior exposure to anti-TNF agents and 53% to vedolizumab. Baseline Mayo score was 6.5 (IQR, 5-7), with a median CRP of 9 mg/L (IQR, 4.8-20.8) and faecal calprotectin 1,612 mg/kg (IQR, 873-4,152). GMA was started mostly after PNR in 83%, the median number of GMA sessions was 16 (IQR, 11-27) and 50% of patients started maintenance GMA. Partial Mayo score significantly decreased 6 months after the last GMA session (p=0.019). During follow-up, 27% started a new biologic therapy and 13% required surgery. 64% of patients under steroids at baseline were able to stop them. Adverse events were reported in 5% of patients.

Conclusion
GMA can safely recapture the response to UST in refractory patients after PNR or LOR to this drug.

D Kioroglou, J L Cabriada, U Martinez Marigorta, I Rodriguez-Lago. Journal of Crohn’s and Colitis, Volume 18, Issue Supplement_1, January 2024, Page i389,doi.org=10.1093/ecco-jcc/jjad212.0236

Background
Granulocyte-monocyte apheresis (GMA) is a non-pharmacological treatment approved for the management of ulcerative colitis (UC), particularly steroid-dependent cases. The exact mechanism of action and immunological changes associated with GMA remain undescribed. Gene expression analysis at the single-cell level (through scRNA-Seq) has emerged as a key tool of choice to characterize drug response at the molecular level. We used scRNA-Seq to characterize the transcriptomic effects and immune cell population alterations in GMA.

Methods
We generated scRNA-Seq from peripheral blood mononuclear cells (PBMC) of two ulcerative colitis (UC) patients undergoing GMA treatment. We compared the gene expression profile before and after 5 sessions of GMA treatment. The analytical pipeline included quality control and classical filtering steps, cell-type annotation, differential gene expression analysis and pathway enrichment profiling.

Results
We report three main results. First, we observed significant reductions of cell types directly affected by GMA treatment in UC patients. This includes classical CD14+ monocytes and Natural killers, which are central components of the innate system. Of note, we observed a remarkable increase in Double-negative T cells (dnT) after 5 sessions of GMA treatment, suggesting potential expansion of protective populations involved in decreased inflammation. Second, we observe a variety of genes and regulatory pathways altered by GMA treatment. In total, we detect 86 differentially expressed genes (DEGs), which overall are biased towards downregulation (63%). Of note, we detected dnT-s exhibiting upregulation of NEFL that is associated with the MAPK cascade and downregulation of genes related to immune response and signaling pathways. Finally, the effects of GMA treatment extend beyond the above mentioned populations, with particular alterations in CD4+ T cell populations such as CD4+ central memory and CD4+ Naive (7 and 13 DEGs, respectively).

Conclusion
For the first time, we generated single-cell transcriptomic profiles to characterize the effects of GMA treatment in peripheral blood of UC patients. Our preliminary analysis detects important alterations in the gene regulation and cell type composition in samples obtained after 5 sessions of GMA. Through expansion of this dataset to include more time points and profiles for more individuals, we will discuss the longitudinal changes and molecular mechanisms involved in response to GMA treatment.

Iago Rodríguez-Lago 1, Fiorella Cañete 2, Elena Guerra-Del-Río 3, Claudia Herrera-deGuise 4, Eva Iglesias 5, Eduardo Leo 6, Yamile Zabana 7, Manuel Barreiro-de Acosta 8, Daniel Ginard 9, José Luis Cabriada 10
Gastroenterol Hepatol. 2024 Jan 23:S0210-5705(24)00022-0. doi: 10.1016/j.gastrohep.2024.01.004. Online ahead of print.
[Article in English, Spanish]

Objective: Granulocyte-monocyte apheresis (GMA) has shown to be safe and effective in treating ulcerative colitis (UC), also in combination with biologics. The objective of this study is to evaluate the efficacy and safety of combining GMA after primary non-response (PNR) or loss of response (LOR) to tofacitinib (TOFA) in patients with UC.

Patients and methods: Retrospective study including all patients with refractory UC who received GMA plus TOFA. Efficacy was assessed 1 and 6 months after finishing GMA by partial Mayo score, C-reactive protein (CRP) and fecal calprotectin (FC). Descriptive statistics and non-parametric tests were used in the statistical analysis.

Results: Twelve patients were included (median 46 years [IQR, 37-58]; 67% female; 67% E3). Patients were mostly receiving TOFA 10mg bid (75%), and 33% also concomitant steroids at baseline. Median partial Mayo score at baseline was 7 (IQR, 5-7), and it decreased to a median of 2 (IQR, 0-3) and 0 (IQR, 0-3) after 1 and 6 months (p=0.027 and 0.020, respectively), while no differences were found in CRP and FC. Clinical remission was achieved by 6 patients both at 1 (50%) and 6 months (67%). CF values<250mg/kg were achieved by 2 and 4 patients at 1 and 6 months (data available in 5 and 7 patients, respectively). No patient required dose-escalation of TOFA, and one patient was able to de-escalate the drug. No patient required colectomy and all patients under steroids were able to stop them. Conclusion: The combination of GMA and TOFA can be effective in selected cases of UC after PNR or LOR to this drug

Cristina Suárez Ferrer 1, Eduardo Martin-Arranz 2, María Dolores Martín-Arranz, Gastroenterol Hepatol 2024 Jan 12:S0210-5705(24)00018-9. doi: 10.1016/j.gastrohep.2024.01.002. Online ahead of print.
Aim: Granulocyte and monocyte apheresis (GMA) is a potential therapeutic option when combined with various drugs for treatment of ulcerative colitis (UC). In this study, we analyze the efficacy and safety of GMA combined with vedolizumab (VDZ) during induction in patients with moderate-severe UC and incomplete response to steroids.

Patients and methods: Single-center retrospective review of patients receiving GMA+VDZ. Data on the disease and previous treatments were collected. Clinical response was classified as no response, response without remission, and remission. Available data on biochemical and endoscopic response were included. Adverse events (AEs) were recorded.

Results: The study population comprised 6 patients with UC who had received GMA+VDZ during induction after failure of an anti-TNF agent. The median number of GMA sessions was 5 (IQR 4-5; 3-10). All the patients received VDZ 300mg iv at 0, 2, and 6 weeks, and 5 (83%) received an additional dose at week 10. During maintenance, all the patients continued VDZ iv every 8 weeks. The median follow-up was 57.6 months (IQR: 39-74). Four of the 6 patients achieved clinical remission after GMA+VDZ and continued in deep remission until the end of follow-up. A median, non-significant decrease of 1378μg/g (IQR: 924-5778μg/g) was observed for calprotectin and 42.2mg/l (IQR: 15.3-113.5) for CRP vs. baseline. No patient underwent colectomy. No treatment-related AEs were observed.

Conclusions: GMA+VDZ during induction can be effective and safe in selected patients with moderate-severe UC and partial response to steroids.

A Morant-Domínguez , B Vera-Santana , A Hernández-Camba , L Ramos , I Alonso-Abreu , N Hernández Álvarez-Buylla , M Vela , M Hernández-Guerra , A Laura , I Ferraz-Amaro , M Carrillo Palau

Journal of Crohn’s and Colitis, Volume 18, Issue Supplement_1, January 2024, Page i870,  https://doi.org/10.1093/ecco-jcc/jjad212.0556

Background: Ulcerative colitis (CU) and Crohn’s disease (CD) are described as inflammatory bowel diseases (IBD). Emerging as potential blood-based inflammatory biomarkers in various chronic diseases are the neutrophil-to-lymphocyte ratio (NLR), monocyte-to-lymphocyte ratio (MLR), platelet-to-lymphocyte ratio (PLR), and systemic immune-inflammatory index (SIRI, calculated as neutrophils × monocytes/lymphocytes). In this work we aim to analyze if these hematological composite scores differ between IBD patients and healthy controls, and whether they are related to disease activity.

Methods: A total of 197 IBD patients, 130 with CD and 67 with CU, and 208 age- and sex-matched healthy controls were recruited. NLR, MLR, PLR, and SIRI were calculated. Multivariable linear regression analysis was performed to study whether these scores differ between patients and controls and how they related to IBD activity scores.

Results: After multivariable analysis adjustment, NLR and PLR, but not SIRI and MLR, were significantly higher in IBD patients compared to controls (table 1). C-reactive protein and SIRI and NLR correlated in patients with IBD. Nevertheless, fecal calprotectin was not related to none of these blood scores. Besides, disease activity parameters were not associated with any of the composite blood-based scores in both patients with CD and CU.

Conclusion: NLR and PLR, independently, are heightened in IBD patients in contrast to controls. However, SIRI and MLR do not share this distinction. Surprisingly, none of the four hematological scores displayed correlations with disease activity in either CD or UC patients.