RT Journal Article T1 Assessment of the therapeutic effect ofigs2.7, a ck1δ protein kinase inhibitor, in combination with riluzole for the treatment of als-associated tdp-43 proteinopathy A1 Gómez Almería, Marta A1 Martinez Gonzalez, Loreto A1 Matos, Ana Teresa A1 Rodríguez Cueto, Carmen Aurora A1 Vaz, Ana Rita A1 Martín Baquero, Raquel A1 Pérez de la Lastra, Carmen A1 Infantes, Rafael A1 Fernández Ruiz, José Javier A1 Palomo, Valle A1 Gil, Carmen A1 Brites, Dora A1 Martinez, Ana A1 Lago Femia, Eva De AB Amyotrophic Lateral Sclerosis (ALS) is a devastating neurodegenerative disease for which no effective treatments currently exist. The FDA and EMA have approved only riluzole, a drug that modestly extends patient survival by 3-18 months. In our research, we have identified a novel CK1δ inhibitor, IGS2.7, which modulates TDP-43 proteinopathy, the main ALS pathological hallmark, in both patient-derived cellular models and TgTDP-43 mice. To assess the potential of IGS2.7 as a therapeutic candidate and considering riluzole remains the standard care for ALS patients, we evaluated its effects in combination with riluzole. Our results demonstrate that co-administration of IGS2.7 and riluzole at effective doses does not cause adverse effects. However, no additional therapeutic benefit was observed beyond that of IGS2.7 monotherapy, suggesting that IGS2.7 may be viable as either a stand-alone treatment or as an adjunct to riluzole. Notably, when suboptimal doses of both drugs were administered, a combined effect was observed. This suggests that, once IGS2.7 reaches clinical testing, its use together with lower doses of riluzole may enhance therapeutic efficacy while potentially minimizing side effects. Additional in vivo pre-clinical studies will be required to further evaluate this possibility, although only clinical trials will ultimately determine its clinical relevance. PB Elsevier SN 0028-3908 YR 2025 FD 2025-12-11 LK https://hdl.handle.net/20.500.14352/131162 UL https://hdl.handle.net/20.500.14352/131162 LA eng NO Gomez-Almeria M, Martinez-Gonzalez L, Matos AT, Rodriguez-Cueto C, Vaz AR, Martín-Baquero R, Pérez de la Lastra C, Infantes R, Fernández-Ruiz J, Palomo V, Gil C, Brites D, Martinez A, de Lago E. Assessment of the therapeutic effect of IGS2.7, a CK1δ protein kinase inhibitor, in combination with riluzole for the treatment of ALS-associated TDP-43 proteinopathy. Neuropharmacology. 2026 Mar 1;285:110804. doi: 10.1016/j.neuropharm.2025.110804. Epub 2025 Dec 11. PMID: 41389988. NO 2025 Acuerdos transformativos CRUE NO La Caixa and Luzón Foundations NO Instituto de Salud Carlos III NO Ministerio de Ciencia, Innovación y Universidades (España) DS Docta Complutense RD 21 mar 2026