Promising Ianalumab Data for Thrombocytopenia: Novartis
Novartis is reporting that its experimental antibody ianalumab, when combined with eltrombopag, significantly extended the time to treatment failure in patients with primary immune thrombocytopenia (ITP) who had previously received corticosteroids. The finding comes from the Phase 3 VAYHIT2 trial and marks another late-stage success for the drug in B cell–driven autoimmune diseases. The trial readout also comes one day after Novartis announced promising data from a separate Phase 3 trial of the drug in Sjögren’s disease (see story).
In the study, ianalumab plus eltrombopag outperformed placebo plus eltrombopag in maintaining safe platelet levels over time, which is the trial’s primary endpoint, according to the company. The combination also achieved a significantly higher rate of sustained platelet count improvement at six months, meeting the key secondary endpoint. Novartis says the safety profile was consistent with prior studies and revealed no new safety concerns.
ITP is a rare autoimmune disorder in which the immune system attacks and destroys platelets, increasing the risk of bleeding, bruising and fatigue, according to Novartis. While existing therapies can raise platelet counts, many patients require lifelong treatment, cycling through multiple drugs to keep the disease under control.
Full results from the trial will be presented at an upcoming medical meeting and are expected to support future regulatory submissions in 2027, Novartis says.
The drug, originally developed in collaboration with MorphoSys AG (acquired by Novartis in 2024), is being investigated in multiple autoimmune diseases, including Sjögren’s disease, systemic lupus erythematosus, lupus nephritis, warm autoimmune hemolytic anemia, and diffuse cutaneous systemic sclerosis. Positive Phase III results in Sjögren’s disease were announced earlier this year.