Dr. Rajkumar is currently the Professor and Head of the Department of Molecular Oncology at the Cancer Institute (WIA), Adyar, Madras. He received his MBBS and MD in General Medicine from the Medicine Madras Medical College, as well as a DM from Medical Oncology Cancer Institute. He also has a PhD in Molecular Oncology from the Royal Postgraduate Medical School at the University of London. Dr. Rajkumar was elected as a fellow of the National Academy of Medical Sciences, India and was awarded the Shri Ramniklal J Kinarivala Cancer Research Award.