New research discovered that adding nintedanib, a targeted cancer growth inhibitor, to chemotherapy could improve the survival rate for bladder cancer.
Nintedanib is a targeted cancer growth inhibitor currently utilised to treat non-small cell lung cancer, yet when added to chemotherapy, it could potentially improve the overall survival rate for bladder cancer patients at one, two, and five years.
A total of 120 patients from 15 hospitals in the UK were recruited for the NEOBLADE phase two randomised control trial, led by Professor Syed A Hussain from the University of Sheffield’s Department of Oncology and Metabolism.
The study was published in The Lancet Oncology.
Nintedanib: improving survival rates
The researcher’s primary outcome was to establish whether adding nintedanib, which works by blocking different proteins from sending signals to cancer cells to grow, could improve the pathological complete response of patients undergoing chemotherapy for muscle-invasive bladder cancer.
The researchers did not find significant improvement in the primary outcome however, the results demonstrated that adding nintedanib did improve the overall survival rate. This requires further investigation in larger trials.
Professor Syed A Hussain, Professor of Medical Oncology at the University of Sheffield, said: “This is a very exciting and important trial. Although we did not see an improvement in adding nintedanib to chemotherapy in terms of the immediate outcome of pathological complete response, we found promising results in terms of improving the overall survival rate of bladder cancer patients.
“These results could be related to changes in the microenvironment of cancer cells translating into survival benefit.
“The study also showed that the treatment – which patients can take at home in tablet form – was well tolerated. This is extremely positive as it does not appear to add significant side effects to those already experienced by patients undergoing chemotherapy.”
The NEOBLADE trial revealed overall survival rates of 96% for the nintedanib group, compared to 81% for the placebo group at one year; 89% for the nintedanib group compared to 69% for the placebo group at two years, and 60% for the nintedanib group, and 49% for the placebo group at five years.
Professor Hussain added: “This was a small trial, but the findings are promising and need further investigation in a larger randomised trial. In the UK, over 10,000 people are diagnosed with bladder cancer each year and almost 5,500 people die from the disease each year.
“We are particularly eager to explore the potential impact of adding this targeted cancer drug to the standard care of chemotherapy on those patients with alteration in specific biomarkers targeted by this drug who may be at much higher risk of cancer cells leaving the tumour and spreading throughout the body.
“This is where the treatment has the biggest potential as there is some evidence to suggest that by blocking these specific biomarkers, nintedanib may improve clinical outcome. Further translational studies to learn from patient samples are now planned.”
Professor James Catto, Professor in Urological Surgery at the University of Sheffield and co-author of the study, said: “These findings are very exciting. They show that combining drugs with different mechanisms of action is possible, is acceptable to our patients and improves long term outcomes. This study is the start of a more personalised approach to treating this common cancer.”
This investigator-initiated study was funded by Boehringer Ingelheim and ran through Liverpool Clinical Trials Centre. It was sponsored by Clatterbridge Cancer Centre, Liverpool.