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Author

  • Zachary W A Klaassen
2020

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 journal › Letter

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 journal › Review article

Open Access
6 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 journal › Article

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 journal › Article

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., Jan 1 2020, (Accepted/In press) In : Clinical Genitourinary Cancer.

Research output: Contribution to journal › Review article

2 Scopus citations

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 journal › Article

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 journal › Article

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 journal › Article

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 journal › Comment/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 journal › Letter

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., Jan 1 2020, (Accepted/In press) In : World Journal of Urology.

Research output: Contribution to journal › Article

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., 2020, (Accepted/In press) In : Journal of Geriatric Oncology.

Research output: Contribution to journal › Article

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 journal › Review 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 journal › Article

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. W. A., Cooperberg, M. R., Amling, C. L., Kane, C. J. & Freedland, S. J., 2020, (Accepted/In press) In : International Journal of Urology.

Research output: Contribution to journal › Article

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 journal › Article

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 journal › Article

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 journal › Article

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 journal › Article

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 journal › Article

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 journal › Article

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 journal › Article

2 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 journal › Article

Open Access
1 Scopus citations

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 journal › Article

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 journal › Review article

Open Access
11 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 journal › Article

The association between patient body mass index and perioperative outcomes following radical cystectomy: An analysis using the American College of Surgeons National Surgical Quality Improvement Program database

Lenardis, M., Harper, B., Satkunasivam, R., Klaassen, Z. & Wallis, C., Mar 30 2020, In : Canadian Urological Association Journal. 14, 9

Research output: Contribution to journal › Article

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 journal › Article

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 journal › Article

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 journal › Article

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 journal › Comment/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 journal › Article

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 journal › Review 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 journal › Article

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 journal › Article

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 journal › Article

48 Scopus citations

Cancer diagnosis and risk of suicide after accounting for prediagnosis psychiatric care: A matched-cohort study of patients with incident solid-organ malignancies

Klaassen, Z., Wallis, C. J. D., Chandrasekar, T., Goldberg, H., Sayyid, R. K., Williams, S. B., Moses, K. A., Terris, M. K., Nam, R. K., Urbach, D., Austin, P. C., Kurdyak, P. & Kulkarni, G. S., Aug 15 2019, In : Cancer. 125, 16, p. 2886-2895 10 p.

Research output: Contribution to journal › Article

11 Scopus citations

EDITORIAL COMMENT

Benton, J. Z., Lodh, A., Wallis, C. J. D. & Klaassen, Z. W. A., Oct 2019, In : Urology. 132, p. 47-48 2 p.

Research output: Contribution to journal › Comment/debate

Epidemiology and treatment modalities for the management of benign prostatic hyperplasia

Lokeshwar, S. D., Harper, B. T., Webb, E., Jordan, A., Dykes, T. A., Neal, D. E., Terris, M. K. & Klaassen, Z., 2019, In : Translational Andrology and Urology. 8, 5, p. 529-539 11 p.

Research output: Contribution to journal › Review article

8 Scopus citations

Extraprostatic Extension in Core Biopsies Epitomizes High-risk but Locally Treatable Prostate Cancer

Goldberg, H., Ramiz, A. H., Glicksman, R., Salgado, N. S., Chandrasekar, T., Klaassen, Z. W. A., Wallis, C. J. D., Hosni, A., Moraes, F. Y., Ghai, S., Kulkarni, G. S., Hamilton, R. J., Perlis, N., Toi, A., Chung, P., Evans, A., van der Kwast, T., Finelli, A., Fleshner, N. & Berlin, A., Feb 2019, In : European Urology Oncology. 2, 1, p. 88-96 9 p.

Research output: Contribution to journal › Article

1 Scopus citations

First-line Treatment of Metastatic Renal Cell Carcinoma: A Systematic Review and Network Meta-analysis

Hahn, A. W., Klaassen, Z., Agarwal, N., Haaland, B., Esther, J., Ye, X. Y., Wang, X., Pal, S. K. & Wallis, C. J. D., Nov 1 2019, In : European Urology Oncology. 2, 6, p. 708-715 8 p.

Research output: Contribution to journal › Article

Open Access
12 Scopus citations

Germ Cell Testicular Tumors—Contemporary Diagnosis, Staging and Management of Localized and Advanced disease

Goldberg, H., Klaassen, Z., Chandrasekar, T., Fleshner, N., Hamilton, R. J. & Jewett, M. A. S., Mar 2019, In : Urology. 125, p. 8-19 12 p.

Research output: Contribution to journal › Review article

5 Scopus citations

How Are Patients With Prostate Cancer Managing Androgen Deprivation Therapy Side Effects?

Tella, D. & Klaassen, Z., Dec 2019, In : Clinical Genitourinary Cancer. 17, 6, p. 480-481 2 p.

Research output: Contribution to journal › Letter

Immune Checkpoint Blockade plus Axitinib for Renal-Cell Carcinoma

Klaassen, Z. W. A., Satkunasivam, R. & Wallis, C. J. D., Jun 27 2019, In : New England Journal of Medicine. 380, 26, 1 p.

Research output: Contribution to journal › Letter

2 Scopus citations

Lessons Learned from the Global Epidemiology of Kidney Cancer: A Refresher in Epidemiology 101

Klaassen, Z., Sayyid, R. K. & Wallis, C. J. D., Jan 2019, In : European urology. 75, 1, p. 85-87 3 p.

Research output: Contribution to journal › Editorial

2 Scopus citations

Local therapy in patients with metastatic prostate cancer: A new standard of care?

Harper, B., Klaassen, Z. & Wallis, C. J. D., Dec 1 2019, In : Translational Cancer Research. 8, p. S592-S594

Research output: Contribution to journal › Comment/debate

Open Access

Lynch Syndrome in Urologic Malignancies – What Does the Urologist Need to Know?

Goldberg, H., Wallis, C. J. D., Klaassen, Z., Chandrasekar, T., Fleshner, N. & Zlotta, A. R., Dec 2019, In : Urology. 134, p. 24-31 8 p.

Research output: Contribution to journal › Article

2 Scopus citations

Mental Illness and Bladder Cancer Patients: The Time for Assertive Intervention Is Now

Klaassen, Z., Lokeshwar, S. D., Allison, A. E. & Wallis, C. J. D., Jan 1 2019, In : European Urology Focus.

Research output: Contribution to journal › Editorial

1 Scopus citations

Population-based outcomes of men with a single negative prostate biopsy: Importance of continued follow-up among older patients

Sayyid, R. K., Alibhai, S. M. H., Sutradhar, R., Eberg, M., Fung, K., Klaassen, Z., Goldberg, H., Perlis, N., Madi, R., Terris, M. K., Urbach, D. R. & Fleshner, N. E., May 2019, In : Urologic Oncology: Seminars and Original Investigations. 37, 5, p. 298.e19-298.e27

Research output: Contribution to journal › Article

2 Scopus citations

Re: Prostate Cancer-specific Mortality Across Gleason Scores in Black vs Nonblack Men

Wallis, C. J. D., Klotz, L. & Klaassen, Z. W. A., Jun 1 2019, In : European urology. 75, 6, p. 1036-1037 2 p.

Research output: Contribution to journal › Comment/debate