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Personalised Therapeutics @LUMC

Recruiting
18 years of age
Both
Phase N/A

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Overview

In PT@LUMC 2000 patients will be randomized between a PGx-guided dosing group and a standard of care group. The patients will be followed for one year in which they will be asked to report adverse drug reactions at one, three, six and twelve months.

Description

Rationale: Pharmacogenomics (PGx) is the study of genetic variability affecting an individual's response to a drug. PGx is a critical component of personalized medicine. Currently, PGx is applied for individual drugs and/or individual genetic variants. Recently a pre-emptive panel-based approach was proposed including 48 PGx variants covering 13 genes for which the Dutch Pharmacogenetic Working Group (DPWG) has issued evidence based drug dosing guidelines. The PGx panel contains all genetic variants that are considered actionable by the DPWG i.e. requiring a dose adjustment or switch to another drug. Interestingly, more than 95% of the Dutch population carries one or more actionable genotype(s) for one of the genes covered by this panel and 10% carries 4 or more. Based upon national prescription data we estimate that 5.6% of all first prescriptions would require an individualization of the dose or drug. However, in current clinical practice the potential of PGx testing is not fully exploited and the impact for LUMC is unknown. Therefore a prospective study on pre-emptive PGx testing will be performed in the LUMC. In this study 2.000 patients will be randomized to PGx-guided dosing or standard of care.

In addition, we plan to conduct sub-studies with the obtained data. The first study aims to explore novel associations of genetic variants with variability in drug response. The second aims to explore the impact of concomitant medication and other non-genetic factors on pharmacogenetic associations in a pragmatic setting.

Primary objective: To implement pre-emptive panel based PGx testing in the LUMC and determine patient benefit of PGx guided drug prescription and dispensing.

Study design: A prospective, open, randomized study in 2,000 patients with a duration of 2 years.

Study population: Patients over 18 years old undergoing medication verification in the LUMC.

Study procedure: Patients are randomized to PGx-guided dosing or standard of care. The PGx-guided group receives pre-emptive PGx testing for a panel of 14 genes (including 227 PGx variants) followed by personalized drug and dose recommendations for newly prescribed drugs. Recommendations are based on the guidelines of the Dutch Pharmacogenetics Working Group. Patients in the control group will receive usual drug prescriptions, without PGx-guided drug or dose selection.

Main study parameters/endpoints: The primary outcome is the occurrence of drug-genotype associated adverse drug reactions (ADR) in the first 12 months following the genetic test. The outcome is dichotomized at ≥ grade 3 CTC-AE.

Nature and extent of the burden and risks associated with participation, benefit and group relatedness. Participation in this study carries a small extra burden:

  1. 10 ml additional blood will be collected during a venipuncture that is planned as part of regular treatment. 2) to complete an online questionnaires at one, three, six and twelve months. No extra visits to the clinic are necessary. Benefits to patients in the study arm include a potentially reduced risk of ADRs. All patients will receive their pharmacogenetic profile which can be used to individualize drug treatment based on the DPWG guidelines. Overall, minimal risks are expected for included patients due to the fact that all of the drugs included within this study have previously been licensed for routine use and thus have been evaluated as having a positive benefit/risk ratio. The DPWG guidelines are based on systematic review of the literature, have been published in peer-reviewed journals and are commonly accepted.

Eligibility

Inclusion Criteria:

  • Provision of informed consent (IC) prior to any study specific procedures.
  • Be aged ≥18
  • A venapunction as part of routine treatment
  • Receive a medication verification interview
  • Be able and willing to be followed-up for at least one year

Exclusion Criteria:

  • Pregnancy or lactating
  • Previous participation in the PREPARE trial (NCT03093818, NL60069.058.16)

Study details

Adverse Drug Reaction

NCT05508763

Leiden University Medical Center

25 January 2024

Step 1 Get in touch with the nearest study center
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