Patient cohort
The subjects included in this study are the first 101 consecutive patients recruited to an ongoing prospective study (NCT03226886, TRACERx renal: study started February 2012, estimated completion September 2023, estimated enrolment 320 patients). Ethical approval was granted for this cohort study by the National Health Service Research Ethics Committee (11/LO/1996, UK). Details of patient selection and inclusion/exclusion criteria are outlined in the supplementary information section SFlow diagram showing patient inclusion and exclusion process