March 12th 2024
About ten years ago, Dr Sam Amin, a consultant paediatric neurologist, who saw Zoë regularly at the TSC clinic in Bath, invited her to join a double blind trial to see if Metformin, commonly given for Type 2 Diabetes, would reduce common symptoms of TSC such as the frequency of seizures and the size of brain tumours.
As he mentions in the Foreword to her book,
Despite all her battles, Zoë agreed to take part in an experimental drug trial. Zoë was aware that there was a 50% chance that she may be given a placebo, but she was prepared to go through with extra tests and assessments because she understood that her contribution had the potential to further change the lives of many individuals with TSC.
And in the GOSH (Great Ormond Street Hospital) report, published in February 2021, says
Her results were encouraging, with a 38% reduction in brain tumour volume and a 75% reduction in seizure frequency during the course of the study.
As of December 2023, the NIHR ( National Institute for Health and Care Research), together with the MRC (Medical Research Council) were looking for funding for an Efficacy and Mechanism Evaluation of Metformin to find if it is a safe and effective medication for TSC. And as far as I can see, now in March 2024, the search for this funding is still under way.
From our point of view, it certainly helped Zoë. Lets hope that funding and a research team can be found to confirm that Metformin is an effective treatment for those with TSC.


