The concept of difficult-to-treat disease in rheumatology: where next?

Lancet Rheumatol. 2025;7:e274–89 doi: 10.1016/S2665-9913(24)00340-0

Nagy et al. propose a unifying and holistic framework for understanding and addressing the concept of difficult-to-treat (D2T) disease across rheumatology, integrating cross-disciplinary evidence and recommending its incorporation into future disease management strategies. The D2T state requires a comprehensive, holistic, multidisciplinary approach that considers the specific characteristics of each disease and the personalised needs of the patient.

Mariette et al. investigated the long-term safety of filgotinib with regard to MACE, VTE and malignancy across RA and UC clinical trial populations. Rates of these events remained low overall, with some increases observed in patients aged 65 years and older.

Di Napoli et al. conducted a global pharmacovigilance analysis comparing MACE between JAKis and anti-TNFα therapies in patients with RA. JAKis were more frequently associated with reported MACE, particularly stroke, and had a shorter median time to onset than
anti-TNFα therapy.

March 2025

Zhao et al. found that among patients with PsA or axSpA, JAKi were not associated with increased risk of CVD or common cancers compared to TNFi or IL-17i.

Eberhard et al. investigated the effectiveness of JAKi versus bDMARDs on pain reduction in RA patients, using Swedish national register data. JAKi treatment resulted in a significantly greater reduction in pain at three months compared with TNFis, with a higher proportion achieving low pain at 12 months, particularly in those previously treated with multiple bDMARDs.

January 2025

Integrated safety analysis of tofacitinib from Phase 2 and 3 trials of patients with ankylosing spondylitis

Journal Reference: Adv Rheumatol. 2024 Dec 18;64:87 doi: 10.1186/s42358-024-00402-x

Deodhar et al. conducted a pooled analysis of Phase 2 and 3 RCT data to assess the safety of tofacitinib in AS. The results showed that tofacitinib 5 mg BID had a tolerable safety profile over 48 weeks, consistent with its use in other inflammatory conditions such as RA and PsA.

December 2024

Haraoui et al. conducted a subgroup analysis of the CANTORAL study, showing that tofacitinib effectiveness was similar in patients with or without CV risk enrichment. However, AEs, particularly in older patients (≥65 years), were more frequent in the CV+ cohort. These findings highlight the need for tailored CV risk management when treating RA with tofacitinib.

Baricitinib as monotherapy for treatment of rheumatoid arthritis: analysis of real-world data

Current Medical Research and Opinion 2024;40:1993–2002 doi: 10.1080/03007995.2024.2416979.

Edwards et al. report on real-world data for baricitinib monotherapy in rheumatoid arthritis, showing significant disease activity reduction across multiple registries and observational studies. These findings reinforce the viability of baricitinib monotherapy in clinical practice for RA patients, complementing existing guidelines.

November 2024

Tsai et al. observed no significant difference in the incidence of psoriatic arthritis among psoriasis patients treated with IL-23 inhibitors compared to IL-12/23 inhibitors, although there was a numerically lower PsA risk with IL-23 inhibitors. Results indicate both therapies are similarly effective for PsO management.

October 2024

Kristensen et al. compared 14 PsA drugs across five treatment classes, evaluating their real-world effectiveness over three months. Ixekizumab showed rapid effectiveness on joint disease activity and skin outcomes, performing better than IL-12/23i and IL-23i, and comparable to TNFi and JAKi. More patients with active psoriasis achieved minimal disease activity with Ixekizumab than other therapies.