Scancell’s SCIB1 ImmunoBody® cancer vaccine being presented at the World Vaccine Congress Scancell Holdings plc, (‘Scancell’ or the 'Company’) the developer of novel immunotherapies for the treatment of cancer, announces that Dr Peter Brown, Clinical and Scientific Consultant, Immunotherapeutics, at Scancell, will be presenting an update on the Company’s SCIB1 ImmunoBody® cancer vaccine at the World Vaccine Congress US 2016, 29-31 March 2016, in Washington D.C., US.

The presentation entitled: “SCIB1 ImmunoBody® stimulates a potent T cell response that eradicates tumours and prevents recurrence” will be presented on Wednesday 30 March 2016 at 11:40am EDT.

Scancell’s first ImmunoBody®, SCIB1, is currently being evaluated in a Phase 1/2 clinical trial in patients with Stage III/IV melanoma. The latest data suggests that SCIB1 may have the potential to significantly extend survival times in patients, especially in those with resected disease. The Company is in the process of preparing a final clinical study report. A Phase 2 checkpoint inhibitor combination study of SCIB1 in melanoma is due to commence in 2017.

Richard Goodfellow, Joint CEO of Scancell, commented:

“We are delighted to be presenting an update on SCIB1 at the World Vaccine Congress, alongside some of the most distinguished companies in the immunotherapy field. Funds from the recently announced placing
and the pending open offer will be used to further progress our ImmunoBody® and Moditope® platforms, including helping to fund our expanded SCIB1 clinical trial programme, which will be led by a team of leading US specialists.”

For Further Information:

SCIB1 mechanism of action

SCIB1 is a DNA ImmunoBody® immunotherapy encoding a human IgG1 antibody, with three epitopes from gp100 and one from TRP-2 engineered into its CDR regions. This immuno-stimulatory antibody targets dendritic cells in vivo via the high affinity Fc receptor, CD64, and stimulates high avidity T cells. Extensive research studies suggest SCIB1 ImmunoBody® has a dual mechanism of action that combines crosspresentation
with direct-presentation. This results in amplification of the immune response to induce high frequency, high avidity T cells which translates into a potent anti-tumour response.

About Scancell

Scancell is developing novel immunotherapies for the treatment of cancer based on its ImmunoBody® and Moditope® technology platforms.
Scancell’s first ImmunoBody®, SCIB1 is being developed for the treatment of melanoma and is being evaluated in a Phase 1/2 clinical trial. Data from the trial demonstrate that SCIB1, when used as monotherapy, has a marked effect on tumour load, produces a melanoma-specific immune response and highly encouraging survival trend without serious side effects. In patients with resected disease there is increasing evidence to suggest that SCIB1 may delay or prevent disease recurrence.

Scancell’s ImmunoBody® vaccines target dendritic cells and stimulate both parts of the cellular immune system: the helper cell system where inflammation is stimulated at the tumour site and the cytotoxic Tlymphocyte or CTL response where immune system cells are primed to recognise and kill specific cells.

Pre-clinical data on a combination of SCIB1 or SCIB2 and checkpoint inhibition (blockade of the PD-1 or CTLA-4 immune checkpoint pathways) have shown enhanced tumour destruction and significantly longer
survival times than when either treatment was used alone.

Scancell has also identified and patented a series of modified epitopes that stimulate the production of killer CD4+ T cells that destroy tumours without toxicity. The Directors believe that the Moditope® platform could
play a major role in the development of safe and effective cancer immunotherapies in the future.