AngLE plc announced that it has signed a contract with Eisai Inc. Under the agreement, in a pilot study worth USD 250,000 to ANGLE, ANGLE will provide CTC analysis with its Portrait HER2 assay to assess breast cancer patients' HER2 (human epidermal growth factor receptor 2) status in a Phase II study of the HER2 targeting antibody-drug conjugate (ADC) BB-1701. Success in the pilot study offers the potential for multiple large scale follow-up studies. ANGLE's Portrait HER2 assay enables quantitative assessment of both HER2 protein expression (via IF) and HER2/neu gene amplification (via FISH) to identify patients who could benefit from anti-HER2 ADC treatment.

HER2-low breast cancer accounts for 55% of all breast cancer cases with analysts predicting that the global HER2+ breast cancer ADC market will reach USD 3.3 billion per annum by 2030. Because of market expansion into HER2-low patients, ANGLE has developed a quantitative HER2 assay to enable accurate stratification of patient populations throughout the treatment pathway given HER2 status can change over time.