Dr. Xu is a Principal Biostatistician at the Princess Margaret Cancer Center, a Scientist at the Ontario Cancer Institute, and an Associate Professor of Biostatistics at Dalla Lana School of Public Health, University of Toronto. As Principal-Investigator or co-Investigator, he has been involved in study design, data administration, statistical modeling development and data analysis on different clinical research and human genetic studies. He has published over 250 peer-reviewed papers in the field of statistics, bioinformatics, medical science and human genetics.

Dr. Xu’s research interests focus on clinical trial design and methodology, biostatistics and bioinformatics methodology, statistical genetics, and cancer clinical and translational research.
A cross sectional study in cognitive and neurobehavioral impairment in long-term nasopharyngeal cancer survivors treated with intensity-modulated radiotherapy.
Radiother Oncol. 2018 Sep 29;:
McDowell LJ, Ringash J, Xu W, Chan B, Lu L, Waldron J, Rock K, So N, Huang SH, Giuliani M, Hope A, O'Sullivan B, Bratman SV, Cho J, Kim J, Jang R, Bayley A, Bernstein LJ
Partial likelihood ratio test for X-chromosome association models.
Genet Epidemiol. 2018 Sep 24;:
Xu W, Hao M
Predictors of early recurrence prior to planned post-operative radiation therapy for oral cavity squamous cell carcinoma and outcomes following salvage intensified radiation therapy.
Int J Radiat Oncol Biol Phys. 2018 Sep 20;:
Hosni A, Huang SH, Chiu K, Xu W, Su J, Bayley A, Bratman SV, Cho J, Giuliani M, Kim J, O'Sullivan B, Ringash J, Waldron J, Spreafico A, Yu E, de Almeida JR, Monteiro E, Chepeha DB, Irish JC, Goldstein DP, Hope A
Long-Term Late Toxicity, Quality of Life, and Emotional Distress in Patients With Nasopharyngeal Carcinoma Treated With Intensity Modulated Radiation Therapy.
Int J Radiat Oncol Biol Phys. 2018 Oct 01;102(2):340-352
McDowell LJ, Rock K, Xu W, Chan B, Waldron J, Lu L, Ezzat S, Pothier D, Bernstein LJ, So N, Huang SH, Giuliani M, Hope A, O'Sullivan B, Bratman SV, Cho J, Kim J, Jang R, Bayley A, Ringash J
Impact of interval from primary cytoreductive surgery to initiation of adjuvant chemotherapy in advanced epithelial ovarian cancer.
Int J Gynaecol Obstet. 2018 Aug 20;:
Lee YY, Lee JW, Lu L, Xu W, Kollara A, Brown T, Heo EJ, May T
Favourable health-related quality of life reported in survivors of thymic malignancies.
Eur J Cardiothorac Surg. 2018 Jul 31;:
Soldera SV, Shakik S, Naik H, Moskovitz M, Chen J, Mittmann N, Xu W, Hope A, Bezjak A, Parajian A, Keshavjee S, Liu G
Analyzing differences between microbiome communities using mixture distributions.
Stat Med. 2018 Jul 23;:
Shestopaloff K, Escobar MD, Xu W
Development and prospective evaluation of CAPLET, a cancer ambulatory patient physical function longitudinal evaluation tool for routine clinical practice.
Support Care Cancer. 2018 Jul 08;:
Hall E, Tam E, Liang M, Zhang Q, Liu L, Wong L, Sarabia S, Yeung S, Gill G, Eng L, Perez-Cosio A, Brown MC, Xu W, Li M, Mittmann N, Jones J, Howell D, Liu G
Radiologic-Pathologic Correlation of Extranodal Extension in Patients With Squamous Cell Carcinoma of the Oral Cavity: Implications for Future Editions of the TNM Classification.
Int J Radiat Oncol Biol Phys. 2018 May 17;:
Almulla A, Noel CW, Lu L, Xu W, O'Sullivan B, Goldstein DP, Hope A, Perez-Ordonez B, Weinreb I, Irish J, Gullane P, Chepeha D, Tong L, Yu E, Huang SH
Prevalence, prognosis, and treatment implications of retropharyngeal nodes in unknown primary head and neck carcinoma.
Oral Oncol. 2018 Jul;82:162-167
Horowitz G, Hosni A, Yu E, Xu W, Lu L, Au M, Dixon PR, Brown D, Chepeha DB, Gilbert RW, Goldstein DP, Gullane PJ, Irish JC, Bayley A, Cho J, Giuliani M, Huang SH, Hope A, Kim J, O'Sullivan B, Ringash J, Waldron J, Weinreb I, Perez-Ordonez B, Bratman SV...

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Scientist, University Health Network

Principal Biostatistician, Princess Margaret Cancer Center, UHN
Associate Professor, Dalla Lana School of Public Health, University of Toronto