Rigel Pharmaceuticals Inc. sees positive signs in a failed Phase II study of its spleen tyrosine kinase (SYK) inhibitor Tavalisse (fostamatinib) and says it will consider next steps for development with potential partners.
The company reported topline data on April 3 from a Phase II study evaluating fostamatinib in immunoglobulin A nephropathy (IgAN), an autoimmune disease of the kidneys that progresses to end-stage renal failure