CPC London 2025 - Poster Zone Awards - Vote for your favourite

These are all of the Poster's which have been selected to display at Clinical Pharmacy Congress 2025 - You can vote for your favourite poster during the event only!

The top three posters with the most votes will be recognised at the Poster Zone Awards Ceremony, taking place on Saturday 10 May at 3pm in the Showcase Theatre. Whether you're presenting or voting, the Poster Zone is an unmissable part of your Congress experience.

Saturday 10th - Morning
Abstract Title
Introducing a process for Monitoring Biosimilar Switch Backs
Background and Introduction
Financial pressures within the NHS are well documented, therefore a key focus for pharmacy is switching patients to biosimilar and generic medicines, which are often 40-50% cheaper than the originator. Unlike generic drugs, biosimilars are not exact copies of the original medicine however they are highly similar with acceptable structural differences. The MHRA updated guidance on the licensing of biosimilar products in 2022 including advice on interchangeability of biosimilar products with their associated reference product and other biosimilar products1. Despite their clinical equivalency a percentage of patients do not tolerate biosimilar medicines and must ‘switch back’ to the originator.
Aims and Objectives
Prior to June 2023, there was no formal governance process at the Trust for monitoring and assessing the appropriateness of biosimilar ‘switch backs’. With the large scale switch of Imraldi to Hyrimoz biosimilar adalimumab, a biosimilar switch back process was introduced within the Trust. The aim of this was to allow improved oversight and monitoring of patients switching back to an originator or other biosimilar. The data was reviewed to identify rationale for switching and analyse the financial impact of doing so.
Method
A form was designed to capture the reason for switching and financial impact. The form is submitted by the clinical team who complete the patients’ details, medicine details and the reason for wanting to switch. Pharmacy complete the cost of the switch and seek a decision from the Drugs and Therapeutics Committee (DTC) on whether to approve or reject the request. If approved, the clinical team were contacted 3 months post switch back to confirm if the patient had remained on the approved treatment and, if they had, to ascertain their current response to treatment and outcomes.
Results
Across all specialities 4% of patients switched back to the originator. At 3 month follow up 90% of patients remained on the switch back treatment. One patient switched to another biologic and another stopped treatment. The main reason given for switching back was loss of response (68% of switch back requests) – see chart below. Follow up outcome measures were difficult to obtain but of the data provided 6 patients had a worse disease score post biosimilar switch, which improved post switch back. The total annual cost pressure of the 25 switches audited was estimated to be £14k.
Authors and affiliation
Bev Harwood, Lead Pharmacist Clinical Commissioning, University Hospitals Plymouth (UHP) Kerry Dixon, Lead Technician Clinical Commissioning, UHP Ailene Barclay, Formulary & Medicines Optimisation Pharmacist, UHP Sam Stephenson, Associate Chief Pharmacist Clinical Commissioning, UHP Vivek Soni, Deputy Chief Pharmacist, UHP
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