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Background: Methotrexate, an immunosuppressant used for the treatment of inflammatory bowel disease (IBD) for over 30 years, remains underused compared to thiopurines.
Aims: To review the efficacy, safety, optimal dosing and delivery regimens of methotrexate in adults with IBD.
Methods: We conducted a systematic review of studies involving patients with IBD treated with methotrexate from inception to August 2023. All studies were included from the MEDLINE database via PubMed.
Results: For Crohn's disease, we included eight randomised controlled trials (RCTs) and 17 observational studies. Parenteral methotrexate effectively increased remission rates in steroid-dependent patients at 25 mg/week for 16 weeks and at 15 mg/week for maintenance. Methotrexate can be used in combination with anti-tumour necrosis factor (TNF) agents to reduce immunogenicity. Data comparing thiopurines and methotrexate remain scarce. For ulcerative colitis (UC), we included five RCTs and 10 observational studies were included; there was no evidence to support the use of methotrexate in (UC). We extracted safety data from 17 studies; mild-to-moderate adverse effects were common. The incidence of liver fibrosis or cirrhosis was low.
Conclusion: Methotrexate is effective at inducing and maintaining remission in steroid-refractory Crohn's disease and can reduce anti-TNF-induced immunogenicity when used in combination therapy. Data regarding tolerance and safety are reassuring. These findings challenge preconceived ideas on methotrexate and suggest that it is a valid first-line conventional option for the treatment of mild-to-moderate Crohn's disease.
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http://dx.doi.org/10.1111/apt.18194 | DOI Listing |
Abdom Radiol (NY)
September 2025
Department of Radiology, Mayo Clinic, Rochester, USA.
Purpose: Crohn's disease (CD) is characterized by enteric inflammation, often resulting in strictures and penetrating complications, which may alter patient management prior to the initiation of biologic therapy. Our aim is to assess the frequency of missed stricturing and internal penetrating complications in CD patients on computed tomography enterography (CTE) and magnetic resonance enterography (MRE) performed prior to anti-TNF therapy.
Methods: We retrospectively reviewed patients from two tertiary centers who underwent CTE\MRE within six months before starting anti-TNF therapy.
Curr Opin Gastroenterol
August 2025
Yale University, Section of Digestive Diseases, New Haven, Connecticut, USA.
Purpose Of Review: Crohn's disease is a chronic, relapsing and remitting inflammatory process that can involve the entire length of the gastrointestinal tract. Upper gastrointestinal involvement (UGI) in Crohn's disease is present in up to 15% of patients and can present as a diagnostic challenge given nonspecific symptoms and overlapping disease entities. This review provides an update on diagnosing and risk stratifying UGI-CD.
View Article and Find Full Text PDFAim: In patients with failing ileo-anal pouches there is often diagnostic uncertainty. In this setting, we may offer revisional pouch surgery with biologic "coverage" for presumed Crohn's disease (CD) which enables an alternative to pouch excision and end ileostomy to highly motivated patients. The aim of this study is to assess postoperative outcomes in patients who underwent revisional/redo ileal pouch anal anastomosis (IPAA) for failing pouches with biologic coverage for possible CD.
View Article and Find Full Text PDFClin Cosmet Investig Dermatol
September 2025
Department of Dermatology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, 100730, People's Rep
Purpose: Alopecia areata (AA) is a common, immune-mediated, non-scarring form of hair loss. Janus kinase inhibitors provide considerable insight into the treatment of severe AA. However, the efficacy and safety of upadacitinib treatment of adolescents and pediatric patients with severe AA is unclear, especially in those without concomitant atopic diseases.
View Article and Find Full Text PDFJ Cell Mol Med
September 2025
Department of Obstetrics and Gynecology, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China.
This study aims to assess whether endometriosis causally increases the risk of IBD through Mendelian randomisation (MR) analysis and to elucidate potential mechanisms using in vitro experiments. A two-sample Mendelian randomisation (MR) analysis was conducted using genome-wide association study datasets for endometriosis and IBD, including ulcerative colitis and Crohn's disease. Causal inference was assessed using inverse variance weighting, MR-Egger, and weighted median methods, with MR-PRESSO used to detect horizontal pleiotropy.
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