An Australian- first trial to personalise medication and improve quality of life for Seniors

Personalising medication in aged care

Whiddon is partnering in an Australian-first clinical trial with the University of Sydney, myDNA, Choice Aged Care and Arrotex Pharmaceuticals, to see how Pharmacogenomics (PGx) can specifically support medication decisions within residential aged care environments.

The Importance of Personalised Medication

A Carer talkes to a residend while he is watering the garden

The “one-size-fits-all” approach to medicine is changing.

For many older Australians, managing health means managing multiple medications every day. While essential, this complexity can increase the risk of side effects and avoidable hospital visits. Currently:

  • Over one million older Australians take five or more medicationsi.
  • Medication-related harm contributes to 250,000 hospital admissions each year, of which two-thirds are believed to be preventableii.
  • 60% of residential aged care residents take at least one high-risk medication and virtually all experience at least one medication related problemiii .

At Whiddon, we believe medication safety is one of the most critical challenges in aged care, and we are committed to finding a better way.

i Page AT, Falster MO, Litchfield M, Pearson SA, Etherton-Beer C. Polypharmacy among older Australians, 2006-2017: a population-based study. Med J Aust. 2019;211(2):71-5.
ii Lim R, Ellett LMK, Semple S, Roughead EE. The Extent of Medication-Related Hospital Admissions in Australia: A Review from 1988 to 2021. Drug Saf. 2022;45(3):249-57.
iii Janet K Sluggett, Maria C Inacio, Gillian E Caughey, Medication management in long-term care: using evidence generated from real-world data to effect policy change in the Australian setting, American Journal of Epidemiology, Volume 193, Issue 12, December 2024, Pages 1645–1649, https://doi.org/10.1093/aje/kwae136

What Is Personalised Medicine?

Every person’s body is different, and those differences extend to how we process medicine. Pharmacogenomics (PGx) is the study of how your genes affect your response to drugs.

Research suggests up to 96 per cent of individuals in Australia have at least one actionable pharmacogenomic variation, with many residing in the genes responsible for metabolising commonly prescribed medicationsiv.

By looking at an individual’s genetic makeup, clinicians can gain insights into which medications may be most effective and which might cause adverse reactions. This technology doesn’t replace a doctor’s expertise; it provides them with a powerful new tool to support their clinical judgement.

ivMostafa S, Kirkpatrick CMJ, Byron K, Sheffield L. An analysis of allele, genotype and phenotype frequencies, actionable pharmacogenomic (PGx) variants and phenoconversion in 5408 Australian patients genotyped for CYP2D6, CYP2C19, CYP2C9 and VKORC1 genes. J Neural Transm (Vienna). 2019 Jan;126(1):5-18. doi: 10.1007/s00702-018-1922-0. Epub 2018 Sep 6. PMID: 30191366.

What Whiddon Is Doing: The Current PGx Trial

Whiddon is currently leading a clinical trial alongside our partners the University of Sydney, myDNA, Choice Aged Care and Arrotex Pharmaceuticals, to see how Pharmacogenomics (PGx) can specifically support medication decisions within residential aged care environments.

A two-year, multi-site Pharmacogenomics (PGx) research study is currently active across four Whiddon Homes in NSW encompassing 200 aged care residents.

Our PGx research is:

  • Tailored for Seniors: Specifically focused on the unique needs of older Australians in care.
  • Clinician-Led: Designed to empower doctors and pharmacists with better data.
  • Ethically Governed: Conducted under strict Australian clinical research standards.
  • Future-Focused: Exploring how genetic insights can proactively inform prescribing habits.

Our research is ongoing, conducted with full ethical oversight, and its findings will eventually be subject to peer-reviewed publication.

Current Research Timeline

How the PGx Testing Trial Works

The trial follows a streamlined, non-invasive process designed to integrate seamlessly into the resident’s existing care routine.
Step 1 – Simple Collection: A quick, non-invasive cheek swab is taken from the participating resident.
Step 2 – Genetic Analysis: The sample is analysed by our research partners to identify specific genetic markers related to medication metabolism.
Step 3 – Insight Reporting: A personalised PGx report is generated, highlighting how the resident may respond to common medications.
Step 4 – Clinical Review: Whiddon clinicians and GPs review the report to determine if any adjustments to current medications could improve safety or comfort.

Potential PGx Benefits Being Explored

This trial reflects Whiddon’s unwavering commitment to providing world-class innovation in care

While outcomes are currently being evaluated, we are exploring how this technology may:

Improve Medication Safety

Reducing the "trial and error" often associated with new prescriptions.

Minimise Side Effects

Identifying potential adverse reactions before they happen.

Support Tailored Care

Ensuring every resident receives a care plan as unique as their DNA.

Enhance Quality of Life

Helping residents feel their best by optimising their medication regimes.

Our Partners: A Collaborative Effort for Change

We aren’t doing this alone. Whiddon is working alongside Australia’s leading researchers and healthcare innovators.

By combining the academic rigor of the University of Sydney with the technical expertise of myDNA, Choice Aged Care, and Arrotex Pharmaceuticals, we are proudly exploring a new standard for medication decisions in aged care.

The University of Sydney is also sponsor of the study.

University of Sydney (research & ethics)
myDNA (genomic technology)
Choice Aged Care (clinical pharmacy)
Arrotex Pharmaceuticals (healthcare solutions)

Latest PGx Updates & Insights

Explore our latest blog posts and media releases to track the progress of the trial and learn more about the future of aged care innovation.

  • What is this clinical trial about?
  • Why is Whiddon doing this research?
  • Is this the first trial of its kind?
  • What is pharmacogenomics?
  • Why do older people respond differently to medications?
  • How could PGx help in aged care?
  • Does this replace a doctor’s judgement?
  • When will results be available?
  • Will this become part of everyday care?