Toxicity and outcome in cats with oral squamous cell carcinoma after accelerated hypofractionated radiotherapy and concurrent systemic treatment

Marconato, Laura; Weyland, Mathias S.; Tresch, Nina; Rossi, Federica; Leone, Vito; Rohrer Bley, Carla

doi:10.1111/vco.12557

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Toxicity and outcome in cats with oral squamous cell carcinoma after accelerated hypofractionated radiotherapy and concurrent systemic treatment
Authors:	Marconato, Laura Weyland, Mathias S. Tresch, Nina Rossi, Federica Leone, Vito Rohrer Bley, Carla
et. al:	No
DOI:	10.1111/vco.12557
Published in:	Veterinary and Comparative Oncology
Volume(Issue):	18
Issue:	3
Page(s):	362
Pages to:	369
Issue Date:	Sep-2020
Publisher / Ed. Institution:	Wiley
ISSN:	1476-5810 1476-5829
Language:	English
Subjects:	Bleomycin; Cat; Feline; Metronomic; Oral tumour; Radiation therapy; Side effect; Thalidomide; Animal; Antineoplastic combined chemotherapy protocol; Cat disease; Female; Male; Mouth neoplasm; Radiotherapy; Retrospective study; Squamous cell carcinoma of head and neck; Treatment outcome; Radiation dose hypofractionation
Subject (DDC):	616: Internal medicine and diseases 630: Agriculture
Abstract:	Recently, a multimodal approach to oral squamous cell carcinoma (SCC) in cats, combining medical treatment and accelerated radiation therapy, showed a substantial outcome improvement in a small pilot study. Herein we retrospectively review 51 cats with unresectable, histologically confirmed oral SCC and a complete initial staging work-up: cats in group A (n = 24) received medical anti-angiogenic treatment consisting of bleomycin, piroxicam and thalidomide, cats in group B (n = 27) received the anti-angiogenic treatment and concurrent accelerated hypofractionated radiation therapy with 48Gy delivered in 10 fractions. Overall median progression-free interval (PFI) was poor with 70 days (95% CI: 48;93). In the irradiated cats (group B), however, PFI was significantly longer with 179 days (95% CI: 58;301) days, vs 30 days (95% CI: 23;38) in medically only treated cats (P < .001). Overall median overall survival (OS) was 89 days (95% CI: 55;124), again significantly longer in the irradiated cats (group B) with 136 (95% CI: 40;233) vs 38 days (95% CI: 23;54) (P < .001). In 8 of the 27 (29.6%) cats in group B, however, severe toxicity (grade 3) occurred. Neither onset nor severity of toxicity could be associated with any of the tested variables, including anatomic site, tumour size, clinical stage and duration of neoadjuvant medical treatment. Given the potential severe acute effects and the impact on quality of life after chemo-radiotherapy, owners must be clearly informed about the risks of treatment. With the overall poor outcome and high occurrence of acute toxicity, we cannot recommend the use of this accelerated radiation protocol combined with anti-angiogenic therapy for oral SCC in cats.
URI:	https://digitalcollection.zhaw.ch/handle/11475/26089
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Organisational Unit:	Institute of Applied Mathematics and Physics (IAMP)
Appears in collections:	Publikationen School of Engineering

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Marconato, L., Weyland, M. S., Tresch, N., Rossi, F., Leone, V., & Rohrer Bley, C. (2020). Toxicity and outcome in cats with oral squamous cell carcinoma after accelerated hypofractionated radiotherapy and concurrent systemic treatment. Veterinary and Comparative Oncology, 18(3), 362–369. https://doi.org/10.1111/vco.12557

Marconato, L. et al. (2020) ‘Toxicity and outcome in cats with oral squamous cell carcinoma after accelerated hypofractionated radiotherapy and concurrent systemic treatment’, Veterinary and Comparative Oncology, 18(3), pp. 362–369. Available at: https://doi.org/10.1111/vco.12557.

L. Marconato, M. S. Weyland, N. Tresch, F. Rossi, V. Leone, and C. Rohrer Bley, “Toxicity and outcome in cats with oral squamous cell carcinoma after accelerated hypofractionated radiotherapy and concurrent systemic treatment,” Veterinary and Comparative Oncology, vol. 18, no. 3, pp. 362–369, Sep. 2020, doi: 10.1111/vco.12557.

MARCONATO, Laura, Mathias S. WEYLAND, Nina TRESCH, Federica ROSSI, Vito LEONE und Carla ROHRER BLEY, 2020. Toxicity and outcome in cats with oral squamous cell carcinoma after accelerated hypofractionated radiotherapy and concurrent systemic treatment. Veterinary and Comparative Oncology. September 2020. Bd. 18, Nr. 3, S. 362–369. DOI 10.1111/vco.12557

Marconato, Laura, Mathias S. Weyland, Nina Tresch, Federica Rossi, Vito Leone, and Carla Rohrer Bley. 2020. “Toxicity and Outcome in Cats with Oral Squamous Cell Carcinoma after Accelerated Hypofractionated Radiotherapy and Concurrent Systemic Treatment.” Veterinary and Comparative Oncology 18 (3): 362–69. https://doi.org/10.1111/vco.12557.

Marconato, Laura, et al. “Toxicity and Outcome in Cats with Oral Squamous Cell Carcinoma after Accelerated Hypofractionated Radiotherapy and Concurrent Systemic Treatment.” Veterinary and Comparative Oncology, vol. 18, no. 3, Sept. 2020, pp. 362–69, https://doi.org/10.1111/vco.12557.