Among the strong points of Nektar Therapeutics Inc.’s atopic dermatitis (AD) prospect, rezpegaldesleukin (rezpeg), an IL-2 pathway agonist and regulatory T-cell proliferator, is the drug’s faster onset of action – a feature that experts say may help differentiate the compound from competitors in the OX40 space.
Apogee Therapeutics Inc. plans to enter a crowded atopic dermatitis market with established drugs, such as Dupixent (dupilumab, Regeneron Pharmaceuticals Inc. and Sanofi SA) and Ebglyss (lebrikizumab-lbkz, Eli Lilly and Co.), which are sold by much larger competitors. But the company thinks it can compete with its anti-IL-13 antibody, APG-777, thanks to the drug’s 77 day half-life that may allow it to be dosed only two to four times a year in the maintenance phase, compared to 13 to 26 injections per year for the established competitors.
Atopic dermatitis data from Nektar Therapeutics Inc. put investors even more in the mood for further results with rezpegaldesleukin (rezpeg), an IL-2 pathway agonist and regulatory T-cell proliferator, also in the works for severe to very severe alopecia areata.
At the ongoing International Society for Stem Cell Research meeting, Chinese researchers reported they demonstrated that SPT6 homolog, histone chaperone and transcription elongation factor (SPT6) promotes epidermal stem/progenitor cells differentiation by facilitating transcriptional elongation, but its role in vivo in skin homeostasis is not well defined.
Deepcure Inc. has nominated DC-15442, an oral selective STAT6 inhibitor, as its second development candidate. DC-15442 is designed to replicate the safety and efficacy of dupilumab, while offering an oral alternative to regular subcutaneous injections.
It’s a good week to be working on drugs targeting STAT6. Kymera Therapeutics Inc.’s, KT-621, the first oral STAT6 degrader candidate to enter the clinic, surpassed expectations with impressive safety, pharmacokinetic and biomarker data from a phase I trial, while potential fast-followers from Nurix Therapeutics Inc. and Recludix Pharma Inc. advanced via respective partnerships with Sanofi SA.
Sanofi SA has exercised its option to exclusively license Nurix Therapeutics Inc.’s STAT6 program, including the drug development candidate NX-3911, an oral, highly selective STAT6 degrader.
Recludix Pharma Inc. has nominated a lead development candidate, REX-8756, an oral, selective and reversible small-molecule inhibitor of STAT6, and completed GLP toxicology studies for the compound. REX-8756 has potential for patients with type 2 immune-related inflammatory diseases.
Teva Pharmaceutical Industries Ltd. has commenced IND-enabling studies with BD-9, a dual-specific multibody targeting thymic stromal lymphopoietin (TSLP) and interleukin-13 (IL-13). By simultaneously blocking two key drivers of TH2-driven inflammation, BD-9 has the potential to improve outcomes for patients with conditions such as atopic dermatitis and asthma.
Rheumatoid arthritis, atopic dermatitis, ulcerative colitis and several other inflammatory diseases involve hyperactivation of JAK-STAT signaling, in which the kinase JAK binds and phosphorylates the transcription factor STAT, which then turns on gene expression.
