The companies said on Thursday the alliance could potentially be worth more than $1 billion (791,145 pound) to Bicycle, if all planned programmes reach the market. This includes an undisclosed upfront payment.

The early-stage research is focussed on using Bicycle's so-called bicyclic peptide products, which have some of the characteristics of injectable antibody drugs but are small molecules that could be given as pills.

For AstraZeneca, the deal expands its drug discovery capacity in core therapeutic areas outside oncology. Currently, most investors in the company are focussed on its pipeline of experimental cancer treatments.

Bicycle, which raised $32 million from investors in an initial funding round in 2014, was set up to capitalise on research initiated at the MRC Laboratory of Molecular Biology in Cambridge, England.

(Reporting by Ben Hirschler; Editing by Keith Weir)