Dr. Alejandro Torres-Trejo

Division of Neurology

Dr. Alejandro Torres-Trejo


Associate Professor, Division of Neurology, Department of Medicine, McMaster University

Associate Member, Department of Oncology, Division of Medical Oncology, McMaster University

Associate Member, Department of Pediatrics, Division of Hematology/Oncology, McMaster University

Juravinski Cancer Centre, Neuro-Oncology Program


Education and Professional Standing

Dr. Torres-Trejo is an American Board of Psychiatry and Neurology (DABPN) Board Certified Adult Neurologist. He is also a fellowship trained Adult Neuro-Oncologist. He received his medical education at The National Polytechnic Institute School of Medicine in Mexico City and completed Medicine Preliminary and Neurology residency training at SUNY at Buffalo, NY. He completed his Neuro-Oncology training at Memorial Sloan-Kettering Cancer Center in New York City and at the University of California Los Angeles. He has additional fellowship training in epilepsy from West Virginia University. He comes with over 10 years of experience working as a Neuro-Oncologist/Neurologist and has worked at institutions such as the University of Pittsburgh Medical Center and at West Virginia University Health Sciences before he joined McMaster University in July of 2012. He has participated as a principal investigator and co-investigator in multiple brain tumour clinical trials sponsored by industry and brain tumour consortiums including the NABTC and RTOG.
Dr. Torres-Trejo is currently part of the Multidisciplinary Adult Neuro-Oncology Program at the Juravinski Cancer Centre and is an investigator of Neuro-Oncology clinical trials offered at the JCC and through the Canadian Brain Tumour Consortium.

Dr. Torres-Trejo also participates in the Pediatric Neuro-Oncology Multidisciplinary Clinic.


Clinical Interests

Dr. Torres-Trejo’s primary clinical interests are CNS malignancies, including primary and metastatic brain and spinal cord tumours, and the delivery of chemotherapy or other biological agents. His other interests include neurological complications of cancer such as paraneoplastic syndromes, and neurological complications of cancer treatment.

Additionally Dr. Torres-Trejo has special interest in patients with brain tumours suffering from epilepsy.

Research Interests

Dr. Torres-Trejo’s research interest is mainly in clinical trials for brain tumours as well as brain tumour imaging.


Dr. Torres-Trejo is actively involved in medical education at the undergraduate and graduate level teaching medical students and residents, including Neurology (Adult and Pediatric), Medicine, Radiation Oncology, Medical Oncology, Neurosurgery, and Physical Medicine and Rehabilitation. 

Selected Publications


  1. Watson D, Torres-Trejo A, Gutmann Ludwig.  Altitude Induced Migraine. The West Virginia Medical Journal .January/February 2011.Vol 107, No.1:22-23.
  2. Nghiemphu PL, Wen PY, Lamborn KR, Drappatz J, Robins HI, Fink K, Malkin MG, Lieberman FS, Deangelis LM, Torres-Trejo A, Chang SM, Abrey L, Fine HA, Demopoulos A, Lassman AB, Kesari S, Mehta MP, Prados MD, Cloughesy TF for the North American Brain Tumor Consortium. A Phase I Trial of Tipifarnib with Radiation Therapy, with and without temozolomide, for Patients with Newly Diagnosed Glioblastoma. Int J Radiat Oncol Biol Phys. 2010 Oct 7 [Epub ahead of print].
  3. Okada H, Lieberman FS, Walter KA, Lunsford LD, Kondziolka DS, Bejjani GK, Hamilton RL, Torres-Trejo A, Kalinski P, Cai Q, Mabold JL, Edington HD, Butterfield LH, Whiteside TL, Potter DM, Schold SC Jr, Pollack IF. Autologous glioma cell vaccine admixed with interleukin-4 gene transfected fibroblasts in the treatment of patients with malignant gliomas. J Transl Med. 2007 Dec 19;5(1):67.
  4. Fernando E. Boada, Denise Davis, Kevin Walter, Alejandro Torres-Trejo, Douglas Kondziolka, Walter Bartynski, Frank Lieberman: Triple Quantum Filtered Sodium MRI of Primary Brain Tumors. Proceedings of the 2004 IEEE International Symposium on Biomedical Imaging: From Nano to Macro, Arlington, VA, USA, April 15-18 2004.  ISBI 2004: 1215-1218
  5. Haney, S., Thompson, P.M., Cloughesy, T.F., Alger, J.R., Frew, A.J., Torres-Trejo, A., Mazziotta, J.C., Toga, A.W. Mapping Therapeutic Response in a Patient with Malignant Glioma, Journal of Computer Assisted Tomography, 2001 Jul-Aug;25(4):529-36. UCLA Neuro-Oncology Program, Los Angeles, CA.

Book Chapters:

  1. Alejandro Torres-Trejo, MD and Lisa DeAngelis, MD. Primary CNS Lymphoma, Chapter Book. Textbook of Neurological Surgery. Editors: H. Hunt Batjer and Christopher M. Loftus.  Lippincot Williams and Wilkins, 2002