S095033

Different from AG-270, SCR-7952 exhibited little influence on metabolic enzymes and did not increase the plasma levels of bilirubin. The mechanism was via the aggravated inhibition of PRMT5 and FANCA splicing perturbations. These results indicated that SCR-7952 could be a potential therapeutic candidate for the treatment of MTAP-deleted cancers, both monotherapy and in combination with PRMT5 inhibitors.

Therefore, in order to expand the applicability of inhibitors, improve anti-tumor effects and reduce toxicity, the combinational effect of MAT2A inhibitor AG-270 and METTL3 inhibitor STM2457 was evaluated in NSCLC...More importantly, the combination also exerted synergistic effects in vivo. In summary, the combination of MAT2A inhibitor and METTL3 inhibitor showed synergistic effects both in vivo and in vitro, which laid a theoretical foundation for expanding the clinical application research of the two types of drugs.

The selected compound 30 exhibited high potency for MAT2A inhibition and a favorable pharmacokinetic profile. Furthermore, in an HCT-116 MTAP-deleted xenograft model, compound 30 showed better in vivo potency than current clinical compound AG-270.

Combination MTDIA and AG-270 treatment differs from direct inhibition of PRMT5 by GSK3326595 by avoiding toxicity caused by cell death in the normal gut epithelium induced by the PRMT5 inhibitor. The combination of MTAP and MAT2a inhibitors expands this synthetic lethal approach to include MTAP cancers, especially the remaining 98% of CRCs without the MTAP genotype.

Notably, MAD2L1 inhibition with M2I1, and MAT2A targeting with the allosteric inhibitor AG-270, both produced a dose- and time-dependent inhibition in cell proliferation and reduction in myeloma cell line viability... Our combined single-cell transcriptomics and VDJ sequencing allowed a greater understanding of heterogeneity among neoplastic PCs compared to each patient's own polyclonal PCs. These analyses can identify putative novel mediators of disease pathobiology that impact prognosis, and that can serve as potential new therapeutic targets using either novel agents, or drug repurposed from other therapeutic areas, setting the stage for their translation to the clinic.

P1, N=123, Terminated, Institut de Recherches Internationales Servier | Completed --> Terminated; Strategic reasons

P1, N=123, Completed, Institut de Recherches Internationales Servier | Active, not recruiting --> Completed

More importantly, introducing an amide motif (28) to the core structure raised the plasma drug exposure from 11 718 to 41 192 ng·h·mL. 28 displayed a significantly better in vivo potency than AG-270, which is being evaluated in clinical trails, and induced -52% tumor regression in a xenograft MTAP-depleted colon tumor model.

We validated the synergistic effects and mechanisms of combined treatment with a type I PRMT inhibitor and a PRMT5 inhibitor (JNJ-64619178, GSK3326595/EPZ015938 or an in-house PRMT5i) using cell-based assays and in vivo studies...In vitro and in vivo studies revealed that inhibitors of type I PRMT and MAT2A (AG-270) dosing combination indeed exhibited stronger anti-cancer activity than mono-treatment...In vivo, the combination of type I PRMT inhibitor with different FLT3 inhibitors (Gilteritinib, Midostaurin, or CTS2016) led to deeper antitumor responses in a variety of FLT3-ITD AML models. Taken together, these findings support the co-administration of type I PRMT inhibitor with various therapies including epigenetic reprogramming, cancer metabolism modulation, or targeted therapies for receptor tyrosine kinases, which could benefit cancer patients as a promising therapeutic strategy.

P1/2, N=0, Withdrawn, Institut de Recherches Internationales Servier | N=105 --> 0 | Initiation date: Aug 2022 --> May 2025 | Not yet recruiting --> Withdrawn | Trial primary completion date: Dec 2025 --> Jun 2026

P1, N=123, Active, not recruiting, Institut de Recherches Internationales Servier | Recruiting --> Active, not recruiting

P1, N=123, Recruiting, Agios Pharmaceuticals, Inc. | Trial completion date: Dec 2021 --> May 2023 | Trial primary completion date: Dec 2021 --> May 2023