Macmillan Cancer Support and the University of Birmingham urge researchers to use newly developed international guidelines so that all key data is published and patients are fully informed about how cancer drugs affect quality of life.
Important feedback about quality of life from up to 49,000 cancer patients who took part in UK-led clinical trials from 2000-2014 remains unpublished, according to a new study led by researchers at the University of Birmingham and funded by Macmillan Cancer Support.
The findings, published today in the Journal of the National Cancer Institute, analysed clinical trials which collected 'Patient-Reported Outcome' (PRO) data: feedback from patients about how the trial treatment affected their overall health and quality of life. This trial data provides a crucial insight into what a patient's life may be like if they opt to take the treatment.
The study found that while most trials consistently published data around survival or cancer progression, more than one in three (38%) failed to publish the PRO data they had collected, meaning that this important information was not available for other patients to help them make decisions about treatment.
New cancer treatments can help prolong people's lives or even offer the chance of a cure, but they can also have serious side-effects and long-term impacts on people's health. Macmillan Cancer Support and the University of Birmingham call upon researchers to use new international guidelines, called SPIRIT-PRO2, developed by a team led by the University, to help ensure vital patient-reported data is available from all trials to assist life-changing treatment discussions between cancer patients and their clinicians.
Dr Rosie Loftus, Chief Medical Officer at Macmillan Cancer Support, said: "Embarking on a new cancer treatment can be a daunting leap into the unknown, and patients must be given all available information about possible side effects to help them make an informed decision.
"Cancer treatment can have a massive impact on someone's quality of life, and it is really important that people are able to consider this alongside the likelihood of increased survival thanks to a particular drug.
The National Cancer Research Institute (NCRI), a UK-wide partnership of cancer research funders, has agreed that more consistency is needed and is leading the way on sharing best practice.
Joint-Chief Investigator for the study Dr Derek Kyte, of the University of Birmingham's Institute of Applied Health Research and the NIHR Birmingham Biomedical Research Centre, said: "Whilst the majority of trials routinely publish survival and progression data, our research has shown that researchers need to work far harder to make sure important quality of life data are made available to patients and their clinicians.
"We recognise trialists need help to do this, which is why Macmillan, the NCRI and the University of Birmingham are working together to share best-practise international guidelines known as SPIRIT-PRO and to provide bespoke training.
Mr Richard Stephens, Chair of the National Cancer Research Institute (NCRI) Consumer Forum, and a cancer patient who has participated in clinical trials and contributed PRO data, said: "I welcome this timely piece of research. In 2015, the Cancer Strategy for England called for Patient Experience to become as important a priority as clinical outcomes.
"That must apply to research for the future as much as to the current care delivered in our NHS.
Dr Iain Frame, National Cancer Research Institute (NCRI) CEO, said: "Clinical research is a vital step in putting new ideas to the test and finding better ways to treat cancer and improve lives.
"High-quality data on a patient's quality of life and responses to new treatments are an important part of clinical research because without them we don't get the bigger picture around how a new treatment or approach can affect a patient.
The next phase of the study will involve interviewing researchers who the study team found were effectively collecting and reporting patient reported outcome data, so that best practice can be shared among the wider research community.