The structurally similar cytokines IL-2 and IL-15, and their shared beta subunit CD122, are keeping developers busy across a range of indications. Though some scientific confusion has plagued the space historically, drug candidates have drawn deals and Wall Street interest aplenty. Amgen Inc., Novartis AG, and Incyte Corp. are among those who’ve made their interest known.

CD122 – shared beta subunit of the IL-15 and IL-2 receptors, two targets for the figurative price of one – has drawn the eyes of many drug developers, among them Anaptysbio Inc., which will roll out phase Ib results in celiac disease during the fourth quarter of this year with ANB-033. The San Diego-based firm intends to weigh the candidate in a second inflammatory disease. Under consideration is eosinophilic esophagitis, an indication that has itself proven widely intriguing.

Lexeo Therapeutics Inc.’s phase I/II data – characterized by Oppenheimer analyst Leland Gershell as “heroic” – this week with gene therapy LX-2020 in PKP2-associated arrhythmogenic cardiomyopathy pushed the New York-based firm’s shares (NASDAQ:LXEO) down 35% to a low of $6.90 Jan. 12, following a $10.54 close the previous trading day.

Stoke Therapeutics Inc.’s speeded-up timeline for zorevunersen, the antisense oligonucleotide in development with Biogen Inc. as a first-in-class potential disease-modifying treatment for Dravet syndrome, put the rare, severe form of lifelong epilepsy in the spotlight. The news involved completion of enrollment and a phase III data readout from the Emperor study, as officials said signups of 150 patients are expected in the second quarter of the year, which puts the study on track for data in mid-2027.

Ollin Biosciences Inc. is gearing up for global phase III trials this year after disclosing favorable top-line results from its randomized, head-to-head phase Ib Jade study comparing OLN-324, a next-generation VEGF/Ang2 bispecific antibody, to Vabysmo (faricimab, Roche AG), which takes aim at the same targets. The drugs were tested in more than 160 patients with diabetic macular edema (DME) or wet age-related macular degeneration (AMD).

Monte Rosa Therapeutics Inc. followed up December’s positive prostate cancer data with strong interim findings from a phase I study with MRT-8102, a NEK7-directed molecular glue degrader in the works for inflammatory conditions driven by the NLRP3 inflammasome, IL-1, and IL-6.

A would-be psoriasis winner began taking more distinct shape in the competitive oral tyrosine kinase 2 (TYK2) inhibitor space, and shares of Alumis Inc. (NASDAQ:ALMS) closed Jan. 6 at $16.23, up $7.92, or 95% – having traded as high as $22.30 – after unveiling positive top-line results from the phase III Onward1 and Onward2 trials with envudeucitinib (envu). Alumis CEO Martin Babler called 2026 “a value-inflection year. It starts today.”

Zenas Biopharma Inc.’s positive data from the phase III Indigo trial with obexelimab in immunoglobulin G4-related disease (IgG4-RD) set investigators to speculating about the bifunctional antibody’s odds in the marketplace, as the Waltham, Mass.-based firm plans a BLA submission the U.S. FDA in the second quarter of this year.