University of California San Francisco
Helen Diller Family Comprehensive Cancer Center
Katy Tsai, MD

Katy Tsai, MD

Clinical Instructor, Division of Hematology/Oncology, UCSF

Research Summary

Dr. Katy K. Tsai is a medical oncologist and clinical researcher who specializes in treating advanced melanoma and other non-melanoma skin cancers, such as squamous cell carcinoma, basal cell carcinoma, and Merkel cell carcinoma.

Dr. Tsai graduated with a degree in comparative literature from Brown University before earning her medical degree from Brown. She completed a residency in internal medicine at the University of North Carolina at Chapel Hill, followed by a fellowship in medical oncology at UCSF, where she served as chief fellow, before joining UCSF faculty in the Melanoma & Skin Cancer Program.

Dr. Tsai is deeply committed to finding the best possible treatment options for her patients. As Site Committee Chair for her program, she works closely with her medical oncology, surgical oncology, and dermatology/dermatopathology colleagues to develop novel clinical trial options, and is also responsible for the curation of the Melanoma & Skin Cancer Program's clinical trial portfolio. She has a long-standing research interest in melanoma survivorship and in understanding the pathophysiology and best treatment practices for acute and chronic immune-related adverse events (irAEs).

Selected Publications

  1. Levine LS, Mahuron KM, Tsai KK, Wu C, Mattis DM, Pauli ML, Oglesby A, Lee JC, Spitzer MH, Krummel MF, Algazi AP, Rosenblum MD, Alvarado M, Daud AI. Tumor Immune Profiling-Based Neoadjuvant Immunotherapy for Locally Advanced Melanoma. Ann Surg Oncol. 2020 Jun 02.
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  2. Algazi AP, Twitty CG, Tsai KK, Le M, Pierce R, Browning E, Hermiz R, Canton DA, Bannavong D, Oglesby A, Francisco M, Fong L, Pittet MJ, Arlauckas SP, Garris C, Levine LP, Bifulco C, Ballesteros-Merino C, Bhatia S, Gargosky S, Andtbacka RHI, Fox BA, Rosenblum MD, Daud AI. Phase II Trial of IL-12 Plasmid Transfection and PD-1 Blockade in Immunologically Quiescent Melanoma. Clin Cancer Res. 2020 May 06.
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  3. Seth R, Messersmith H, Kaur V, Kirkwood JM, Kudchadkar R, McQuade JL, Provenzano A, Swami U, Weber J, Alluri KC, Agarwala S, Ascierto PA, Atkins MB, Davis N, Ernstoff MS, Faries MB, Gold JS, Guild S, Gyorki DE, Khushalani NI, Meyers MO, Robert C, Santinami M, Sehdev A, Sondak VK, Spurrier G, Tsai KK, van Akkooi A, Funchain P. Systemic Therapy for Melanoma: ASCO Guideline. J Clin Oncol. 2020 Mar 31; JCO2000198.
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  4. Algazi A, Bhatia S, Agarwala S, Molina M, Lewis K, Faries M, Fong L, Levine LP, Franco M, Oglesby A, Ballesteros-Merino C, Bifulco CB, Fox BA, Bannavong D, Talia R, Browning E, Le MH, Pierce RH, Gargosky S, Tsai KK, Twitty C, Daud AI. Intratumoral delivery of tavokinogene telseplasmid yields systemic immune responses in metastatic melanoma patients. Ann Oncol. 2020 04; 31(4):532-540.
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  5. Greaney SK, Algazi AP, Tsai KK, Takamura KT, Chen L, Twitty CG, Zhang L, Paciorek A, Pierce RH, Le MH, Daud AI, Fong L. Intratumoral Plasmid IL12 Electroporation Therapy in Patients with Advanced Melanoma Induces Systemic and Intratumoral T-cell Responses. Cancer Immunol Res. 2020 Feb; 8(2):246-254.
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  6. Tsai KK, Khurana N, McCalmont T, Daud A, Bastian B, Yeh I. PTCH1 Mutation in a Patient With Metastatic Undifferentiated Carcinoma With Clear Cell Change. J Natl Compr Canc Netw. 2019 07 01; 17(7):778-783.
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  7. Fitzgerald K, Tsai KK. Systemic therapy for advanced cutaneous squamous cell carcinoma. Semin Cutan Med Surg. 2019 Mar 01; 38(1):E67-E74.
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  8. Pai CS, Huang JT, Lu X, Simons DM, Park C, Chang A, Tamaki W, Liu E, Roybal KT, Seagal J, Chen M, Hagihara K, Wei XX, DuPage M, Kwek SS, Oh DY, Daud A, Tsai KK, Wu C, Zhang L, Fasso M, Sachidanandam R, Jayaprakash A, Lin I, Casbon AJ, Kinsbury GA, Fong L. Clonal Deletion of Tumor-Specific T Cells by Interferon-? Confers Therapeutic Resistance to Combination Immune Checkpoint Blockade. Immunity. 2019 02 19; 50(2):477-492.e8.
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  9. Tsai KK, Bollin KB, Patel SP. Obstacles to improving outcomes in the treatment of uveal melanoma. Cancer. 2018 07 01; 124(13):2693-2703.
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  10. Ramstein JJ, Tsai KK, Smith JF. Tyrosine Kinase Inhibitors and Male Reproductive Health. Clin Pharmacol Ther. 2017 Nov; 102(5):754-756.
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  11. Loo K, Tsai KK, Mahuron K, Liu J, Pauli ML, Sandoval PM, Nosrati A, Lee J, Chen L, Hwang J, Levine LS, Krummel MF, Algazi AP, Pampaloni M, Alvarado MD, Rosenblum MD, Daud AI. Partially exhausted tumor-infiltrating lymphocytes predict response to combination immunotherapy. JCI Insight. 2017 Jul 20; 2(14).
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  12. Daud A, Tsai K. Management of Treatment-Related Adverse Events with Agents Targeting the MAPK Pathway in Patients with Metastatic Melanoma. Oncologist. 2017 07; 22(7):823-833.
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  13. Tsai KK, Algazi AP. Are PD-1 antibodies safe for use in metastatic uveal melanoma? Melanoma Manag. 2017 May; 4(2):79-82.
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  14. Tsai KK, Algazi AP. Melanoma Management. Are PD-1 antibodies safe for use in metastatic uveal melanoma?. 2017; 4(2):79-82.
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  15. Tumeh PC, Hellmann MD, Hamid O, Tsai KK, Loo KL, Gubens MA, Rosenblum M, Harview CL, Taube JM, Handley N, Khurana N, Nosrati A, Krummel MF, Tucker A, Sosa EV, Sanchez PJ, Banayan N, Osorio JC, Nguyen-Kim DL, Chang J, Shintaku IP, Boasberg PD, Taylor EJ, Munster PN, Algazi AP, Chmielowski B, Dummer R, Grogan TR, Elashoff D, Hwang J, Goldinger SM, Garon EB, Pierce RH, Daud A. Liver Metastasis and Treatment Outcome with Anti-PD-1 Monoclonal Antibody in Patients with Melanoma and NSCLC. Cancer Immunol Res. 2017 05; 5(5):417-424.
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  16. Nosrati A, Tsai KK, Goldinger SM, Tumeh P, Grimes B, Loo K, Algazi AP, Nguyen-Kim TDL, Levesque M, Dummer R, Hamid O, Daud A. Evaluation of clinicopathological factors in PD-1 response: derivation and validation of a prediction scale for response to PD-1 monotherapy. Br J Cancer. 2017 Apr 25; 116(9):1141-1147.
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  17. Menzies AM, Johnson DB, Ramanujam S, Atkinson VG, Wong ANM, Park JJ, McQuade JL, Shoushtari AN, Tsai KK, Eroglu Z, Klein O, Hassel JC, Sosman JA, Guminski A, Sullivan RJ, Ribas A, Carlino MS, Davies MA, Sandhu SK, Long GV. Anti-PD-1 therapy in patients with advanced melanoma and preexisting autoimmune disorders or major toxicity with ipilimumab. Ann Oncol. 2017 02 01; 28(2):368-376.
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  18. Tsai KK, Pampaloni MH, Hope C, Algazi AP, Ljung BM, Pincus L, Daud AI. Increased FDG avidity in lymphoid tissue associated with response to combined immune checkpoint blockade. J Immunother Cancer. 2016; 4:58.
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  19. Algazi AP, Tsai KK, Shoushtari AN, Munhoz RR, Eroglu Z, Piulats JM, Ott PA, Johnson DB, Hwang J, Daud AI, Sosman JA, Carvajal RD, Chmielowski B, Postow MA, Weber JS, Sullivan RJ. Clinical outcomes in metastatic uveal melanoma treated with PD-1 and PD-L1 antibodies. Cancer. 2016 Nov 15; 122(21):3344-3353.
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  20. Shoushtari AN, Munhoz RR, Kuk D, Ott PA, Johnson DB, Tsai KK, Rapisuwon S, Eroglu Z, Sullivan RJ, Luke JJ, Gangadhar TC, Salama AK, Clark V, Burias C, Puzanov I, Atkins MB, Algazi AP, Ribas A, Wolchok JD, Postow MA. The efficacy of anti-PD-1 agents in acral and mucosal melanoma. Cancer. 2016 Nov 15; 122(21):3354-3362.
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