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RecruitingLast updated: 11 June 2026

PEGASUS: Investigating changes in how the body processes medicines in children, adolescents and young adults with Hodgkin or Non-Hodgkin LymphomaA Prospective Feasibility Study Investigating PhEnoconversion of CYP3A4, CYP2C19 and CYP2D6 Genotype in Paediatric and Adolescent and Young Adult patientS With an acUte diagnosiS of Hodgkin or Non-Hodgkin Lymphoma.

Trial purpose

Medical clipboardSide effect and wellbeing

Tumor type

Blood Cancers Haematological

Age

People6 - 25

Trial acronym

PEGASUS

Clinical summary

Summary

This study is looking at how the body processes medicines in young people with cancer, and how this can change during treatment. This is sometimes called “phenoconversion”, which means your body may handle medicines differently over time.
 
This study is not testing a new cancer treatment. Instead, it is looking at whether it is feasible to use small doses of commonly used “probe” medicines to understand how the body processes drugs during cancer treatment.

Who can take part
This study is for children, teenagers, and young adults aged 6 to 25 years who have Hodgkin lymphoma or non-Hodgkin lymphoma. 

What the study involves
Participants will be given small doses of “probe” medicines that help researchers understand how the body breaks down drugs.

These medicines (omeprazole and dextromethorphan) will be taken at times that match the participant’s regular hospital visits, so no extra visits are needed. Blood samples will be taken to measure how the body processes these medicines.

Why this study is important
This study will help researchers understand whether this type of testing is practical and acceptable for young people with cancer.

In the future, this research may help doctors tailor treatments more precisely to each person, improving how well medicines work and reducing side effects.

 

Conditions

This trial is treating people with a new diagnosis of Hodgkin Lymphoma or Non-Hodgkin Lymphoma

Eligibility

Inclusion

  • Age 6-25 years of age.
  • New diagnosis of Hodgkin Lymphoma or Non-Hodgkin Lymphoma.
  • Able to swallow and absorb oral or nasogastric tube (NGT) administration of probe drugs.
  • Able to provide written informed consent.

Exclusion

  • Failure to comply with inclusion criteria.
  • Has a known previous allergy to any of the probe medications (i.e., omeprazole or dextromethorphan).
  • Common Terminology Criteria for Adverse Events (CTCAE) Grade IV end organ dysfunction (i.e., hepatic, renal, gastrointestinal).
  • Had previous oncological treatment (not first cancer diagnosis).
  • Is a clinically unstable patient requiring intensive care admission in high-risk circumstances will not be considered eligible for consent.
  • Any patient requiring urgent initiation of anti-cancer treatment outside hours where a member of the study staff is unable to approach the parent/guardian or participant for consent prior to commencing anti-cancer therapy will be ineligible for consent.
  • Unable to provide written informed consent.

Inclusion

  • You have had a certain type of treatment or surgical procedure.
  • You have the type of cancer, symptoms, or health risks that this clinical trial is focused on.

Exclusion

  • You have certain types of non-cancer medical conditions.
  • You have had certain treatments, surgical procedures or drugs.
Message

Clinical trials have complex eligibility criteria, and other criteria may apply for this trial. Ask your doctor about whether this trial could be right for you.

Participating hospitals

Recruiting hospitals

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More information

Trial Identifiers

Information on this page is partially produced from ClinicalTrials.gov *. View further details about this trial on the registry via the links below:

Trial sponsor

Murdoch Childrens Research Institute

Scientific Title

A Prospective Feasibility Study Investigating PhEnoconversion of CYP3A4, CYP2C19 and CYP2D6 Genotype in Paediatric and Adolescent and Young Adult patientS With an acUte diagnosiS of Hodgkin or Non-Hodgkin Lymphoma.

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