ALX-0761 – anti-IL-17A/F to treat auto-immune disorders

  • ALX-0761 is being developed for the treatment of auto-immune disorders
  • ALX-0761 achieved pre-clinical proof-of-concept in an animal model for rheumatoid arthritis
  • A Phase Ib study with ALX-0761 in patients with psoriasis is currently on-going
  • ALX-0761 was exclusively licensed to Merck KGaA in June 2013


Psoriasis is a common, chronic, relapsing, immune-mediated systemic disease characterised by skin lesions including red, scaly patches, papules and plaques, which usually itch. The skin lesions seen in psoriasis may vary in severity from minor localised patches to complete body coverage. About 50% of patients with severe and moderate psoriasis receive only topical or no treatment at all and more than half of the patients are dissatified with current treatments. Recent research suggests that IL-17 blockers could be more efficaceous than TNFa blockers for the treatment of psoriasis (source: Nature Biotechnology, Vol 33, Jan 2015; Nature Reviews Drug Disovery, Hilary Bartlett & Ryan Million, Jan 2015).

ALX-0761 mode of action

ALX-0761 (40kD) is a trivalent, bi-specific Nanobody that blocks both IL-17A and IL-17F and that binds to human serum albumin for in vivo serum half-life extension. Th17 cells and IL-17 are associated with the pathology of many human inflammatory and autoimmune disorders like psoriasis, rheumatoid arthritis (RA) and multiple sclerosis.

Related presentations, abstracts and posters

Poster: Pre-clinical proof-of-concept of ALX-0761, a Nanobody neutralising both IL-17A and IL-17F in a cynomolgus monkey collagen induced arthritis model. (Poster presented at the Annual Meeting of the American College of Rheumatology (ACR), 26 to 30 October 2013, San Diego, California).

< back