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  • Zachary W A Klaassen
2020

Addressing Mental Health in Urology Patients: The Time is Now

Klaassen, Z. & Wallis, C. J. D., 2020, (Accepted/In press) In : European Urology Focus.

Research output: Contribution to journalEditorial

Open Access

Adjuvant Versus Salvage Radiotherapy Following Radical Prostatectomy: Meta-analysis of the Effect of Comparator Salvage Approach on Study Conclusions

Wallis, C. J. D., Klaassen, Z., Luckenbaugh, A. N., Laviana, A. A. & Bhindi, B., Mar 2020, In : European urology. 77, 3, p. 395-396 2 p.

Research output: Contribution to journalLetter

Adverse event profile for immunotherapy agents compared with chemotherapy in solid organ tumors: a systematic review and meta-analysis of randomized clinical trials

Magee, D. E., Hird, A. E., Klaassen, Z., Sridhar, S. S., Nam, R. K., Wallis, C. J. D. & Kulkarni, G. S., Jan 2020, In : Annals of Oncology. 31, 1, p. 50-60 11 p.

Research output: Contribution to journalReview article

Open Access
7 Scopus citations

Analysis of Heterogeneity in Survival Benefit of Immunotherapy in Oncology According to Patient Demographics and Performance Status: A Systematic Review and Meta-Analysis of Overall Survival Data

Butaney, M., Satkunasivam, R., Goldberg, H., Freedland, S. J., Patel, S. P., Hamid, O., Pal, S. K., Klaassen, Z. & Wallis, C. J. D., Mar 1 2020, In : American Journal of Clinical Oncology: Cancer Clinical Trials. 43, 3, p. 193-202 10 p.

Research output: Contribution to journalArticle

1 Scopus citations

A Novel Splice Variant of HYAL-4 Drives Malignant Transformation and Predicts Outcome in Patients with Bladder Cancer

Lokeshwar, V. B., Morera, D. S., Hasanali, S. L., Yates, T. J., Hupe, M. C., Knapp, J., Lokeshwar, S. D., Wang, J., Hennig, M. J. P., Baskar, R., Escudero, D. O., Racine, R. R., Dhir, N., Jordan, A. R., Hoye, K., Azih, I., Manoharan, M., Klaassen, Z. W. A., Kavuri, S. K., Lopez, L. E. & 2 others, Ghosh, S. & Lokeshwar, B. L., Jul 1 2020, In : Clinical cancer research : an official journal of the American Association for Cancer Research. 26, 13, p. 3455-3467 13 p.

Research output: Contribution to journalArticle

Association between PD-L1 status and immune checkpoint inhibitor response in advanced malignancies: a systematic review and meta-analysis of overall survival data

Wallis, C. J. D., Lawson, K., Butaney, M., Satkunasivam, R., Parikh, J. R., Freedland, S. J., Patel, S. P., Hamid, O., Pal, S. K. & Klaassen, Z., Jul 9 2020, In : Japanese Journal of Clinical Oncology. 50, 7, p. 800-809 10 p.

Research output: Contribution to journalArticle

1 Scopus citations

A Systematic Review and Network Meta-analysis of Novel Androgen Receptor Inhibitors in Non-metastatic Castration-resistant Prostate Cancer

Hird, A. E., Magee, D. E., Bhindi, B., Ye, X. Y., Chandrasekar, T., Goldberg, H., Klotz, L., Fleshner, N., Satkunasivam, R., Klaassen, Z. & Wallis, C. J. D., Oct 2020, In : Clinical Genitourinary Cancer. 18, 5, p. 343-350 8 p.

Research output: Contribution to journalReview article

3 Scopus citations

Can post-treatment free PSA ratio be used to predict adverse outcomes in recurrent prostate cancer?

Goldberg, H., Glicksman, R., Woon, D., Hoffman, A., Shaikh, H., Chandrasekar, T., Klaassen, Z., Wallis, C. J. D., Ahmad, A. E., Sanmamed-Salgado, N., Qu, X., Moraes, F. Y., Diamandis, E. P., Berlin, A. & Fleshner, N. E., 2020, (Accepted/In press) In : BJU International.

Research output: Contribution to journalArticle

Clinical-genomic Characterization Unveils More Aggressive Disease Features in Elderly Prostate Cancer Patients with Low-grade Disease

Goldberg, H., Spratt, D., Chandrasekar, T., Klaassen, Z., Wallis, C. J. D., Santiago-Jimenez, M., Fishbane, N., Davicioni, E., Noorani, R., Ahmad, A. E., Herrera Cáceres, J. O., Alibhai, S., Berlin, A. & Fleshner, N. E., Jan 1 2020, (Accepted/In press) In : European Urology Focus.

Research output: Contribution to journalArticle

Clinical Parameters Outperform Molecular Subtypes for Predicting Outcome in Bladder Cancer: Results from Multiple Cohorts, Including TCGA

Morera, D. S., Hasanali, S. L., Belew, D., Ghosh, S., Klaassen, Z., Jordan, A. R., Wang, J., Terris, M. K., Bollag, R. J., Merseburger, A. S., Stenzl, A., Soloway, M. S. & Lokeshwar, V. B., Jan 1 2020, In : The Journal of urology. 203, 1, p. 62-72 11 p.

Research output: Contribution to journalArticle

5 Scopus citations

Competing Risks of Mortality among Men with Biochemical Recurrence after Radical Prostatectomy

Daskivich, T. J., Howard, L. E., Amling, C. L., Aronson, W. J., Cooperberg, M. R., Kane, C. J., Klaassen, Z. W. A., Terris, M. K. & Freedland, S. J., Sep 1 2020, In : The Journal of urology. 204, 3, p. 511-517 7 p.

Research output: Contribution to journalArticle

Comprehensive assessment of the morbidity of renal mass biopsy: A populationbased assessment of biopsy-related complications

Garbens, A., Wallis, C. J. D., Klaassen, Z., Saskin, R., Plumptre, L., Kodama, R., Herschorn, S. & Nam, R. K., Jul 2020, In : Canadian Urological Association Journal. 15, 2

Research output: Contribution to journalArticle

Open Access

Diagnostic utility of axial imaging in the evaluation of hematuria: A systematic review and critical appraisal of the literature

Wallis, C. J. D., Sayyid, R. K., Manyevitch, R., Perlis, N., Lokeshwar, V. B., Fleshner, N. E., Terris, M. K., Nielsen, M. E. & Klaassen, Z. W. A., Jul 2020, In : Canadian Urological Association Journal. 15, 2

Research output: Contribution to journalReview article

Open Access

EDITORIAL COMMENT

Lokeshwar, S. D., Benton, J. Z., King, S. A., Terris, M. K., Wallis, C. J. D. & Klaassen, Z., Feb 2020, In : Urology. 136, p. 55-56 2 p.

Research output: Contribution to journalComment/debate

Effect of Renal Mass Biopsy on Subsequent Nephrectomy Outcomes: A Population-based Assessment

Wallis, C. J. D., Garbens, A., Klaassen, Z., Kodama, R. T., Herschorn, S. & Nam, R. K., Jan 2020, In : European urology. 77, 1, p. 136-137 2 p.

Research output: Contribution to journalLetter

Gender-based psychological and physical distress differences in patients diagnosed with non-metastatic renal cell carcinoma

Ajaj, R., Cáceres, J. O. H., Berlin, A., Wallis, C. J. D., Chandrasekar, T., Klaassen, Z., Ahmad, A. E., Leao, R., Finelli, A., Fleshner, N. & Goldberg, H., Oct 1 2020, In : World Journal of Urology. 38, 10, p. 2547-2554 8 p.

Research output: Contribution to journalArticle

3 Scopus citations

Impact of Alzheimer's disease and related dementia diagnosis following treatment for bladder cancer

Jazzar, U., Shan, Y., Klaassen, Z., Freedland, S. J., Kamat, A. M., Raji, M. A., Masel, T., Tyler, D. S., Baillargeon, J., Kuo, Y. F., Mehta, H. B., Bergerot, C. D. & Williams, S. B., Sep 2020, In : Journal of Geriatric Oncology. 11, 7, p. 1118-1124 7 p.

Research output: Contribution to journalArticle

Impact of Diagnosing Urologists and Hospitals on the Use of Radical Cystectomy

Golla, V., Shan, Y., Mehta, H. B., Klaassen, Z., Tyler, D. S., Baillargeon, J., Kamat, A. M., Freedland, S. J., Gore, J. L., Chamie, K., Kuo, Y. F. & Williams, S. B., Jul 2020, In : European Urology Open Science. 19, p. 27-36 10 p.

Research output: Contribution to journalArticle

Open Access

Introduction of Telemedicine During the COVID-19 Pandemic: A Challenge for Now, an Opportunity for the Future

Sosnowski, R., Kamecki, H., Joniau, S., Walz, J., Klaassen, Z. & Palou, J., 2020, (Accepted/In press) In : European urology.

Research output: Contribution to journalEditorial

1 Scopus citations

Metastatic hormone-sensitive prostate cancer: Current perspective on the evolving therapeutic landscape

Hall, M. E., Huelster, H. L., Luckenbaugh, A. N., Laviana, A. A., Keegan, K. A., Klaassen, Z., Moses, K. A. & Wallis, C. J. D., 2020, In : OncoTargets and Therapy. 13, p. 3571-3581 11 p.

Research output: Contribution to journalReview article

Open Access
1 Scopus citations

Molecular targeting of renal cell carcinoma by an oral combination

Jordan, A. R., Wang, J., Yates, T. J., Hasanali, S. L., Lokeshwar, S. D., Morera, D. S., Shamaladevi, N., Li, C. S., Klaassen, Z., Terris, M. K., Thangaraju, M., Singh, A. B., Soloway, M. S. & Lokeshwar, V. B., May 1 2020, In : Oncogenesis. 9, 5, 52.

Research output: Contribution to journalArticle

Open Access

Obese men undergoing radical prostatectomy: Is robotic or retropubic better to limit positive surgical margins? Results from SEARCH

Nik-Ahd, F., Howard, L. E., Aronson, W. J., Terris, M. K., Klaassen, Z., Cooperberg, M. R., Amling, C. L., Kane, C. J. & Freedland, S. J., Oct 1 2020, In : International Journal of Urology. 27, 10, p. 851-857 7 p.

Research output: Contribution to journalArticle

1 Scopus citations

Obesity, race, and long-term prostate cancer outcomes

Vidal, A. C., Oyekunle, T., Howard, L. E., De Hoedt, A. M., Kane, C. J., Terris, M. K., Cooperberg, M. R., Amling, C. L., Klaassen, Z., Freedland, S. J. & Aronson, W. J., Aug 15 2020, In : Cancer. 126, 16, p. 3733-3741 9 p.

Research output: Contribution to journalArticle

Paraneoplastic limbic encephalitis in a patient with primary well-differentiated teratoma and metastatic poorly differentiated embryonal carcinoma

Wehrle, C. J., Ullah, A., Sinkler, M. A., Heneidi, S. G., Klaassen, Z. W. A., Biddinger, P. W., Kruse, E. J., Wallace, G., Nichols, F. & Patel, N., Sep 2020, In : Yale Journal of Biology and Medicine. 93, 4, p. 495-500 6 p.

Research output: Contribution to journalArticle

Perioperative venous thromboembolism prophylaxis in prostate cancer surgery

Klaassen, Z., Wallis, C. J. D., Lavallée, L. T. & Violette, P. D., Mar 1 2020, In : World Journal of Urology. 38, 3, p. 593-600 8 p.

Research output: Contribution to journalArticle

1 Scopus citations

Predictors of prostate-specific antigen testing in men aged ≥55 years: A cross-sectional study based on patient-reported outcomes

Leong, J. Y., Chandrasekar, T., Berlin, A., Klaassen, Z., Wallis, C. J. D., Ahmad, A. E., Herrera-Caceres, J. O., Perlis, N., Fleshner, N. E. & Goldberg, H., Sep 1 2020, In : International Journal of Urology. 27, 9, p. 711-718 8 p.

Research output: Contribution to journalArticle

Promotion of epithelial hyperplasia by interleukin-8—CXCR axis in human prostate

Smith, D. K., Hasanali, S. L., Wang, J., Kallifatidis, G., Morera, D. S., Jordan, A. R., Terris, M. K., Klaassen, Z., Bollag, R., Lokeshwar, V. B. & Lokeshwar, B. L., Sep 1 2020, In : Prostate. 80, 12, p. 938-949 12 p.

Research output: Contribution to journalArticle

Psychological distress associated with active surveillance in patients younger than 70 with a small renal mass

Goldberg, H., Ajaj, R., Cáceres, J. O. H., Berlin, A., Chandrasekar, T., Klaassen, Z., Wallis, C. J. D., Ahmad, A. E., Leao, R., Petrella, A. R., Kachura, J. R., Fleshner, N., Matthew, A., Finelli, A., Jewett, M. A. S. & Hamilton, R. J., Jun 2020, In : Urologic Oncology: Seminars and Original Investigations. 38, 6, p. 603.e17-603.e25

Research output: Contribution to journalArticle

1 Scopus citations

Race does not predict skeletal-related events and all-cause mortality in men with castration-resistant prostate cancer

Patel, D. N., Howard, L. E., De Hoedt, A. M., Amling, C. L., Aronson, W. J., Cooperberg, M. R., Kane, C. J., Klaassen, Z. W., Terris, M. K. & Freedland, S. J., Jul 15 2020, In : Cancer. 126, 14, p. 3274-3280 7 p.

Research output: Contribution to journalArticle

Racial Discrepancies in Overall Survival among Men Treated with 223Radium

Zhao, H., Howard, L. E., De Hoedt, A., Terris, M. K., Amling, C. L., Kane, C. J., Cooperberg, M. R., Aronson, W. J., Klaassen, Z., Polascik, T. J., Vidal, A. C. & Freedland, S. J., Feb 1 2020, In : The Journal of urology. 203, 2, p. 331-337 7 p.

Research output: Contribution to journalArticle

3 Scopus citations

Relation between surgeon age and postoperative outcomes: A population-based cohort study

Satkunasivam, R., Klaassen, Z., Ravi, B., Fok, K. H., Menser, T., Kash, B., Miles, B. J., Bass, B., Detsky, A. S. & Wallis, C. J. D., Apr 14 2020, In : CMAJ. 192, 15, p. E385-E392

Research output: Contribution to journalArticle

Open Access
1 Scopus citations

Reply by Authors

Goldberg, H., Ahmad, A. E., Chandrasekar, T., Klotz, L., Emberton, M., Haider, M. A., Taneja, S. S., Arora, K., Fleshner, N., Finelli, A., Perlis, N., Tyson, M. D., Klaassen, Z. & Wallis, C. J. D., Jun 1 2020, In : The Journal of urology. 203, 6, p. 1093 1 p.

Research output: Contribution to journalComment/debate

Retzius-sparing robotic-assisted laparoscopic radical prostatectomy: racial considerations for 250 consecutive cases

Sayyid, R. K., Sherwood, D., Simpson, W. G., Terris, M. K., Klaassen, Z. & Madi, R., Jan 1 2020, (Accepted/In press) In : Journal of Robotic Surgery.

Research output: Contribution to journalArticle

Risks from Deferring Treatment for Genitourinary Cancers: A Collaborative Review to Aid Triage and Management During the COVID-19 Pandemic[Formula presented]

Wallis, C. J. D., Novara, G., Marandino, L., Bex, A., Kamat, A. M., Karnes, R. J., Morgan, T. M., Mottet, N., Gillessen, S., Bossi, A., Roupret, M., Powles, T., Necchi, A., Catto, J. W. F. & Klaassen, Z., Jul 2020, In : European urology. 78, 1, p. 29-42 14 p.

Research output: Contribution to journalReview article

Open Access
12 Scopus citations

Setting the Standards: Examining Research Productivity Among Academic Urologists in the USA and Canada in 2019

Chandrasekar, T., Han, T. M., Glick, L., Leong, J. Y., Teplitsky, S., Noorani, R., Goldberg, H., Klaassen, Z., Wallis, C. J. D., Mark, J. R., Trabulsi, E. J., Lallas, C. D. & Gomella, L. G., Jan 1 2020, (Accepted/In press) In : European Urology Focus.

Research output: Contribution to journalArticle

Open Access
Open Access

The association between physician trust and smoking cessation: Implications for motivational interviewing

Benton, J. Z., Lodh, A., Watson, A. M., Tingen, M. S., Terris, M. K., Wallis, C. J. D. & Klaassen, Z., Jun 2020, In : Preventive Medicine. 135, 106075.

Research output: Contribution to journalArticle

The deleterious association between proton pump inhibitors and prostate cancer-specific mortality – a population-based cohort study

Goldberg, H., Mohsin, F. K., Saskin, R., Kulkarni, G. S., Berlin, A., Kenk, M., Wallis, C. J. D., Chandrasekar, T., Klaassen, Z., Saarela, O., Penn, L., Alibhai, S. M. H. & Fleshner, N., 2020, (Accepted/In press) In : Prostate Cancer and Prostatic Diseases.

Research output: Contribution to journalArticle

The Impact of the COVID-19 Pandemic on Genitourinary Cancer Care: Re-envisioning the Future

Wallis, C. J. D., Catto, J. W. F., Finelli, A., Glaser, A. W., Gore, J. L., Loeb, S., Morgan, T. M., Morgans, A. K., Mottet, N., Neal, R., O'Brien, T., Odisho, A. Y., Powles, T., Skolarus, T. A., Smith, A. B., Szabados, B., Klaassen, Z. & Spratt, D. E., Nov 2020, In : European urology. 78, 5, p. 731-742 12 p.

Research output: Contribution to journalReview article

The suggested chemopreventive association of metformin with prostate cancer in diabetic patients

Goldberg, H., Mohsin, F. K., Berlin, A., Chandrasekar, T., Wallis, C. J. D., Klaassen, Z., Ahmad, A. E., Saskin, R., Kenk, M., Saarela, O., Kulkarni, G. S., Alibhai, S. M. H. & Fleshner, N., 2020, (Accepted/In press) In : Urologic Oncology: Seminars and Original Investigations.

Research output: Contribution to journalArticle

The Suggested Unique Association Between the Various Statin Subgroups and Prostate Cancer

Goldberg, H., Mohsin, F. K., Saskin, R., Kulkarni, G. S., Berlin, A., Kenk, M., Wallis, C. J. D., Klaassen, Z., Chandrasekar, T., Ahmad, A. E., Sayyid, R. K., Saarela, O., Penn, L., Alibhai, S. M. H. & Fleshner, N., 2020, (Accepted/In press) In : European Urology Focus.

Research output: Contribution to journalArticle

Twitter and academic Urology in the United States and Canada: a comprehensive assessment of the Twitterverse in 2019

Chandrasekar, T., Goldberg, H., Klaassen, Z., Wallis, C. J. D., Leong, J. Y., Liem, S., Teplitsky, S., Noorani, R. & Loeb, S., Jan 1 2020, In : BJU International. 125, 1, p. 173-181 9 p.

Research output: Contribution to journalArticle

5 Scopus citations

Validation of a genomic classifier for prediction of metastasis and prostate cancer-specific mortality in African-American men following radical prostatectomy in an equal access healthcare setting

Howard, L. E., Zhang, J., Fishbane, N., Hoedt, A. M. D., Klaassen, Z., Spratt, D. E., Vidal, A. C., Lin, D., Hitchins, M. P., You, S., Freeman, M. R., Yamoah, K., Davicioni, E. & Freedland, S. J., Sep 1 2020, In : Prostate Cancer and Prostatic Diseases. 23, 3, p. 419-428 10 p.

Research output: Contribution to journalArticle

2019

Abiraterone Acetate for Nonmetastatic Castration-Resistant Prostate Cancer - The Forgotten Dance Partner?

Klaassen, Z., Wallis, C. J. D. & Fleshner, N. E., Feb 2019, In : JAMA Oncology. 5, 2, p. 144-145 2 p.

Research output: Contribution to journalComment/debate

4 Scopus citations

Age Differences in Patient-reported Psychological and Physical Distress Symptoms in Bladder Cancer Patients – A Cross Sectional Study

Ajaj, R., Berlin, A., Klaassen, Z., Chandrasekar, T., Wallis, C. J. D., Ahmad, A. E., Herrera Cáceres, J. O., Leao, R., Petrella, A. R., Fleshner, N., Matthew, A., Kulkarni, G. S. & Goldberg, H., Dec 2019, In : Urology. 134, p. 154-162 9 p.

Research output: Contribution to journalArticle

2 Scopus citations

Androgen deprivation therapy and gleason grade: Unravelling implications on survival

Scott, M., Klaassen, Z. & Wallis, C. J. D., Jun 1 2019, In : Translational Cancer Research. 8, 3, p. 729-731 3 p.

Research output: Contribution to journalReview article

Are there differences between de novo and secondary upper tract urothelial carcinoma tumors?

Goldberg, H., Cheung, D. C., Chandrasekar, T., Klaassen, Z., Wallis, C. J. D., Kulkarni, G. S., Sayyid, R., Evans, A., Masoomian, M., Bapat, B., Van Der Kwast, T., Hamilton, R. J., Zlotta, A. & Fleshner, N., 2019, In : Canadian Urological Association Journal. 13, 9, p. E292-E299

Research output: Contribution to journalArticle

Open Access

Association between Smoking and Survival Benefit of Immunotherapy in Advanced Malignancies: A Systematic Review and Meta-Analysis

Wallis, C. J. D., Satkunasivam, R., Butaney, M., Khan, U. A., Goldberg, H. A., Freedland, S. J., Patel, S. P., Hamid, O., Pal, S. K. & Klaassen, Z., Sep 1 2019, In : American Journal of Clinical Oncology: Cancer Clinical Trials. 42, 9, p. 711-716 6 p.

Research output: Contribution to journalArticle

Association of Patient Sex with Efficacy of Immune Checkpoint Inhibitors and Overall Survival in Advanced Cancers: A Systematic Review and Meta-analysis

Wallis, C. J. D., Butaney, M., Satkunasivam, R., Freedland, S. J., Patel, S. P., Hamid, O., Pal, S. K. & Klaassen, Z., Apr 2019, In : JAMA Oncology. 5, 4, p. 529-536 8 p.

Research output: Contribution to journalArticle

51 Scopus citations