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Implementation of a screening circuit and prevention of infections in cancer patients treated with immune checkpoint inhibitors
European Statement
Clinical Pharmacy Services
Author(s)
Alba Manzaneque, Carla Jurado , Cristina Alonso , Mireia Cairó, Glòria Molas, Fernando Salazar , Lucía Boix, Roser Font, Laura López, Jordi Nicolás, Marc Campayo, Esther Calbo
Why was it done?
Although an intrinsic risk of infection has not been associated with ICI, there are different studies and case-series in the literature in which an increased risk of infection is observed, mainly associated with the use of immunosuppressive drugs (like corticoids) for immune-mediated toxicities. The objective of implementing this circuit in our centre is to reduce all preventable infections, by carrying out an initial infection screening that allows detection of those patients susceptible to vaccination measures, prophylaxis, or specific recommendations.
What was done?
Implementation of an infection screening circuit in cancer patients treated with immune checkpoint inhibitor drugs (ICI).
How was it done?
To carry it out, a multidisciplinary work team was created (pharmacy/oncology/infections department) that designed the ICI template and the clinical circuits. At this point, we believed it was necessary to centralise requests, results, and follow-ups in the oncology pharmacy team (OPT) in order to ensure that all patients were included.
Before the patient initiates treatment with ICIs, the OPT makes the request for a pre-established ICI analysis and the oncology nurse (ON) extracts it. Within 7-10 days, the infection department checks the results and makes the necessary recommendations (vaccination/prophylaxis/specific recommendations).
The OPT is then responsible for both vaccination and initiation of prophylaxis.
What has been achieved?
A total of 30 patients (January to September 2022) have been included in the circuit, 25/30 being men and with a mean age of 67.8 (± 8.8) years.
In 25/30 the treatment was with palliative intent, and 21/30 had lung neoplasia.
The ICIs prescribed were: pembrolizumab (15/30) and nivolumab/atezolizumab/durvalumab (5/30 in each case).
Screening results are available for 26/30 patients. Some type of recommendation was made in 25/26 patients, being: 20/26 hepatitis B vaccination, 5/26 start prophylaxis (2/5 hepatitis B and 3/5 tuberculosis), 6/26 hygienic-dietary measures (aimed at toxoplasmosis).
Additionally, all previously unvaccinated patients (23/26) have been vaccinated against pneumococcus.
What next?
A comparative analysis of infection with a historical cohort is planned when larger sample size is available, to demonstrate that these types of measures reduce the occurrence of infections. Centralising this type of initiative from the OPT is key to our integration into clinical teams, by avoiding important adverse reactions and taking care of our patients.