Dr Nikolaos Diamantis

Job title

Consultant medical oncologist and clinical lead for colorectal cancer



GMC Number


Contact details

PA/secretary phone number: Katie Davis - 020 7794 0500 ext 32325

PA/secretary email address: kdavis2@nhs.net

Private practice phone number: Katie Davis - 020 7794 0500 ext 32325

Private practice email address: kdavis2@nhs.net

Related services

Cancer services


Dr Diamantis underwent specialist training at Imperial College. He was awarded the Greek national scholarship and conducted clinical research at the Royal Marsden. His research interests include immunotherapy for gastro-intestinal malignancies and first-in-human clinical trials. Dr Diamantis is a principal investigator for a number of phase 2/3 clinical trials.


Nivolumab Combination Therapy in Advanced Esophageal Squamous-Cell Carcinoma N Engl J Med 2022 Feb 3;386(5):449-462. doi: 10.1056/NEJMoa2111380

Mortality Among Adults With Cancer Undergoing Chemotherapy or Immunotherapy and Infected With COVID-19 JAMA Netw Open. 2022 Feb 1;5(2):e220130. doi: 10.1001/jamanetworkopen.2022.0130

Time-Dependent COVID-19 Mortality in Patients With Cancer: An Updated Analysis of the OnCovid Registry JAMA Oncol 2022 Jan 1;8(1):114-122. doi: 10.1001/jamaoncol.2021.6199

Prevalence and impact of COVID-19 sequelae on treatment and survival of patients with cancer who recovered from SARS-CoV-2 infection: evidence from the OnCovid retrospective, multicentre registry study Lancet Oncol 2021 Dec;22(12):1669-1680. doi: 10.1016/S1470-2045(21)00573-8

Phase 1/2a trial of intravenous BAL101553, a novel controller of the spindle assembly checkpoint, in advanced solid tumours Br J Cancer 2020 Oct;123(9):1360-1369. doi: 10.1038/s41416-020-1010-8

The role of genomic profiling in adolescents and young adults (AYAs) with advanced cancer participating in phase I clinical trials Eur J Cancer 2018 May;95:20-29. doi: 10.1016/j.ejca.2018.02.028. Epub 2018 Mar 31