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Clinical Trial Summary

Breast cancer is the most common cancer in the United Kingdom (UK), but improvements in treatment mean 3 in 4 people survive for more than 10 years. Many people receive treatments called human epidermal growth factor receptor 2 (HER2) targeted therapies for their breast cancer, however these can affect heart function. This 'cardiotoxicity' is generally temporary and mild, but patients receive drugs to help their heart recover. Currently it is not known how long patients should receive these treatments. Patients with other types of heart failure are treated lifelong, but this may not be necessary here as the damaging cancer drugs have stopped. Taking drugs for many years can have an impact on people's quality of life, particularly for young patients. It is therefore important to understand the best treatment length. The investigators will study people whose heart function has recovered after HER2 therapy heart problems and are not at high risk for heart disease. The investigators will carefully stop their heart drugs whilst monitoring them closely with special heart scans and blood tests to detect problems early. The investigators will also study how patients are currently treated using national data. The results of this study will help doctors better guide breast cancer survivors about treatment of heart damage from HER2 cancer therapies.


Clinical Trial Description

Trial design: Two centre open label randomised control trial to evaluate the phased withdrawal versus continuation of heart failure treatment for 'recovered' human epidermal growth factor receptor 2 (HER2) therapy-related cardiac dysfunction in non-high risk patients following completion of HER2 therapy. The trial will include cardiovascular magnetic resonance scans (CMR) with automated in-line analytics to improve the sensitivity for detection of early relapse, and detailed patient questionnaires assessing medication disutility to better understand participant motivations and concerns related to treatment continuation and withdrawal. Trial population: The trial will recruit 90 adult participants (>18 years) with a prior diagnosis of HER2-targeted therapy related cardiac dysfunction, who currently receive standard heart failure/ cardioprotective medications (any combination of Angiotensin-converting enzyme [ACE] inhibitors, angiotensin receptor blockers [ARBs] and/or beta-blockers), and whose cardiac function has 'recovered'. 'Recovery' is defined as absence of heart failure symptoms with left ventricular ejection fraction (LVEF) improved to 50% or greater and N-terminal pro B-type natriuretic peptide (NTproBNP) <200ng/L, for greater than 6 months. Patients will be recruited from Barts Health and University College London Hospitals (UCLH) cardio-oncology and breast cancer clinics. Exclusion criteria: Patients with advanced/ metastatic HER2 positive breast cancer requiring ongoing HER2 therapies or with life expectancy <12months will be excluded. Patients classed as high/very high cardiotoxicity risk according to the European Society of Cardiology/International Cardio-Oncology Society Position Statement (Lyon et al, 2020), LVEF <50% prior to HER2-therapies or on completion of anthracycline treatment, or indications for ongoing ACE inhibitors, ARBs and/or beta-blockers, nor those with absolute contraindications to CMR. Interventions and Duration of treatment: Participants will undergo phased withdrawal of heart failure/ cardioprotective treatments according to a pre-specified algorithm based on the 'Withdrawal of pharmacological treatment for heart failure in patients with recovered dilated cardiomyopathy' (TRED-HF) study protocol (Halliday et al 2019). This had been designed following extensive consultation with independent experts and attempts to mimic 'real-world' medication withdrawal in clinical practice. Medications will be down titrated in a phased process every 2 weeks over a maximum of 16 weeks. Drug doses will be reduced by 50% in a stepwise manner every 2 weeks, until the patient is taking 25% or less of the maximum recommended dose at which point the medication will be stopped. Monitoring with fortnightly virtual consultations will confirm drug dose reduction and provide support. Participants will undergo clinical assessment at 6, 14 and 24 weeks and 6, 9 and 12 months with weight, blood pressure, and biomarker measurement. At baseline, 6- and 12-month visits detailed cardiovascular phenotyping using CMR and symptom and disutility questionnaires will be undertaken. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05880160
Study type Interventional
Source University College, London
Contact Benjamin Dowsing, MBBS MSc BSc
Phone +447912148972
Email benjamin.dowsing@nhs.net
Status Recruiting
Phase N/A
Start date July 14, 2023
Completion date September 2025

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