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Dhein ES, Heikkilä U, Oevermann A, Blatter S, Meier D, Hartnack S, Guscetti F. Incidence rates of the most common canine tumors based on data from the Swiss Canine Cancer Registry (2008 to 2020). PLoS One 2024; 19:e0302231. [PMID: 38635572 PMCID: PMC11025767 DOI: 10.1371/journal.pone.0302231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 03/29/2024] [Indexed: 04/20/2024] Open
Abstract
Monitoring neoplasms in standardized registries facilitates epidemiologic studies of risk factors for tumor development and predisposition. In an observational study, we determined incidence rates (IR) and malignant tumor incidence rate ratios (IRR) by age, sex, and breed in Swiss dogs using demographic data from the official Swiss dog registration database Amicus. The dataset analyzed included 54'986 tumors diagnosed by histology and cytology in four Swiss veterinary pathology laboratories between 2008 and 2020. Diagnoses were coded according to the Vet-ICD-O-canine-1 system. Most tumors occurred in the skin (n = 19'045; 34.64%), soft tissues (n = 11'092; 20.17%), and mammary glands (n = 7'974; 14.50%). The IRs for all and for malignant tumors were 775/100'000 dog-years at risk (95%CI 764-777) and 338/100'000 dog-years at risk (95%CI 333-342), respectively. Females (850; 95%CI 834-853) had a higher overall tumor IR than males (679; 95%CI 666-684). The highest tumor IR was found at 11 years of age (1'857; 95%CI 1'780-1'867). Potential novel breed-specific predispositions were uncovered, with high IRs for several benign and malignant tumors in Polski Owczarek Nizinnys (overall IR: 3'303; 95%CI 2'502-3'864) and high IRs for malignant tumors in Russian Black Terriers (melanomas: 345; 95%CI 138-708), Field Spaniels (adenocarcinomas: 376; CI95% 138-817), Dogo Argentinos (mast cell tumors: 844; CI95% 591-1'169), King Charles Spaniels and Manchester Terriers (lymphomas: 319; CI95% 137-627 and 302; CI95% 98-704, respectively), Landseers (osteosarcomas: 74; CI95% 15-216), Bouvier des Flandres (hemangiosarcomas: 127; CI95% 26-371), and Bearded Collies and Cane Corso Italianos (gliomas: 91; CI95% 45-162 and 34; CI95% 7-99, respectively). Nordic hunting dogs had the highest (8.08; CI95% 3.55-16.7) and Chihuahueno the lowest cancer IRRs (0.42; 95%CI 0.31-0.57) compared to mixed breeds. In conclusion, the calculated IRs and IRRs revealed previously unknown predisposing factors, including novel breed-specific susceptibilities. The results may have implications for cancer screening, diagnostic work-up, breeding management and oncologic and translational research.
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Affiliation(s)
- Elena Sophie Dhein
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | | | - Anna Oevermann
- Department of Clinical Research and Veterinary Public Health, Division of Neurological Sciences, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Sohvi Blatter
- Institute of Animal Pathology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Daniela Meier
- Zyto/Histo Diagnostik Labor Freienstein, Freienstein, Switzerland
| | - Sonja Hartnack
- Section of Epidemiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Franco Guscetti
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
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Epigenetic Alterations in Canine Malignant Lymphoma: Future and Clinical Outcomes. Animals (Basel) 2023; 13:ani13030468. [PMID: 36766357 PMCID: PMC9913421 DOI: 10.3390/ani13030468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 01/25/2023] [Accepted: 01/28/2023] [Indexed: 02/02/2023] Open
Abstract
Canine malignant lymphoma is a common neoplasia in dogs, and some studies have used dogs as a research model for molecular mechanisms of lymphomas in humans. In two species, chemotherapy is the treatment of choice, but the resistance to conventional anticancer drugs is frequent. The knowledge of molecular mechanisms of development and progression of neoplasia has expanded in recent years, and the underlying epigenetic mechanisms are increasingly well known. These studies open up new ways of discovering therapeutic biomarkers. Histone deacetylases and demethylase inhibitors could be a future treatment for canine lymphoma, and the use of microRNAs as diagnosis and prognosis biomarkers is getting closer. This review summarises the epigenetic mechanisms underlying canine lymphoma and their possible application as treatment and biomarkers, both prognostic and diagnostic.
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3
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Musser ML, Clifford CA, Bergman PJ, Treml LS, McAnulty LCC, McNiel EA, Johannes CM. Randomised trial evaluating chemotherapy alone or chemotherapy and a novel monoclonal antibody for canine T-cell lymphoma: A multicentre US study. Vet Rec Open 2022; 9:e49. [PMID: 36329876 PMCID: PMC9624070 DOI: 10.1002/vro2.49] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 09/15/2022] [Accepted: 10/12/2022] [Indexed: 11/07/2022] Open
Abstract
Background Canine peripheral nodal T‐cell lymphoma is considered chemotherapy resistant and carries a relatively poor prognosis. Prospective evaluations reporting the impact of chemotherapy on progression‐free survival (PFS) and overall survival time for dogs with T‐cell lymphoma are lacking. This study examined the impact of L‐CHOP (L‐asparaginase, doxorubicin, cyclophosphamide, vincristine, prednisone) chemotherapy or L‐CHOP in combination with AT‐005, a US Department of Agriculture‐licensed caninised monoclonal antibody, on PFS and response rates in dogs with clinical intermediate‐ and high‐grade peripheral nodal T‐cell lymphoma. Methods A prospective, randomised, placebo‐controlled, investigator‐ and owner‐blinded, multicentre study was completed. All dogs received a 19‐week L‐CHOP chemotherapy protocol with randomisation (1:1) into placebo or AT‐005 groups. Response was evaluated via the Veterinary Cooperative Oncology Group criteria for canine lymphoma. Results Forty‐nine dogs were enrolled (25 received placebo and 24 received AT‐005). Most demographic factors were similar between the two groups, with the exception that more dogs with stage IV and V disease were treated with AT‐005 (34% vs. 8%; p = 0.03). Median PFS was 103 days (95% confidence interval [CI], 56–118) in the placebo group versus 64 days (95% CI, 36–118) in the AT‐005 group. The overall response rate (ORR) for all dogs was 98% (48 of 49); complete response rate in the placebo group (64%) was not different from the AT‐005 group (67%). Conclusions To the best of the authors’ knowledge, this is the first prospective study to document that treatment with L‐CHOP chemotherapy, with or without AT‐005, may result in a high ORR, but relatively brief PFS in dogs with clinical intermediate‐ and high‐grade T‐cell lymphoma.
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Affiliation(s)
- Margaret L. Musser
- Iowa State University College of Veterinary MedicineLloyd Veterinary Medical CenterAmesIowaUSA
| | - Craig A. Clifford
- Blue Pearl Malvern/Hope Veterinary SpecialistsMalvernPennsylvaniaUSA
| | - Philip J. Bergman
- Department of Clinical StudiesVCA, Katonah Bedford Veterinary CenterBedford HillsNew YorkUSA
| | | | | | | | - Chad M. Johannes
- Colorado State University College of Veterinary Medicine and Biomedical Sciences, Flint Animal Cancer CenterFort CollinsCOUSA
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Smith N, Luethcke KR, Craun K, Trepanier L. Risk of bladder cancer and lymphoma in dogs is associated with pollution indices by county of residence. Vet Comp Oncol 2022; 20:246-255. [PMID: 34480391 PMCID: PMC9969847 DOI: 10.1111/vco.12771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 09/02/2021] [Indexed: 12/14/2022]
Abstract
Human urothelial cell carcinoma (UCC) and non-Hodgkin lymphoma are considered environmental cancers in people, but less is known about environment risk for UCC and lymphoma in dogs. The objective of this study was to determine whether dogs with these cancers, compared to unaffected control dogs, live in counties with higher tap water contaminants or higher levels of air pollution as measured by the Environmental Protection Agency (EPA) and by National Air Toxics Assessment chemical exposure risk estimates. Dogs with available home addresses from two previously published case-control populations were included: 66 dogs with UCC and 70 unaffected controls; and 56 boxer dogs with lymphoma and 84 unaffected boxer controls. Tap water total trihalomethanes, which are water disinfection by-products, were more than threefold higher in UCC case counties of residence compared to controls (p < .0001), and a higher proportion of dogs with UCC lived in counties exceeding EPA ozone limits (41.8%) compared to controls (13.6% p = .0008). More boxers with lymphoma lived in counties exceeding EPA ozone limits (52.1%) compared to controls (29.0%; p = .018), with higher exposure risk estimates for airborne 1,3-butadiene and formaldehyde (p = .004-.005). These data support the hypothesis that tap water contaminants and airborne environmental pollutants contribute to the risk of both urothelial carcinoma and lymphoma in dogs. If these findings reflect causal relationships, then it is possible that tap water filtration units and more effective air pollution controls could decrease the overall incidence of these cancers in dogs.
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Affiliation(s)
- Natalie Smith
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Kristofer Ross Luethcke
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Kaitlyn Craun
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Lauren Trepanier
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
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5
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Boozer TC, Heng HG, Lim CK, Eichelberger B, Childress M. Ultrasonographic features of atraumatic‐pathological subcapsular splenic haematomas in two dogs with confirmed lymphoma. VETERINARY RECORD CASE REPORTS 2022. [DOI: 10.1002/vrc2.316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tara C. Boozer
- Purdue University College of Veterinary Medicine West Lafayette Indiana USA
| | - Hock Gan Heng
- Purdue University College of Veterinary Medicine West Lafayette Indiana USA
| | - Chee Kin Lim
- Purdue University College of Veterinary Medicine West Lafayette Indiana USA
| | | | - Michael Childress
- Purdue University College of Veterinary Medicine West Lafayette Indiana USA
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Hernández-Suárez B, Gillespie DA, Pawlak A. DNA Damage Response (DDR) proteins in canine cancer as potential research targets in comparative oncology. Vet Comp Oncol 2021; 20:347-361. [PMID: 34923737 PMCID: PMC9304296 DOI: 10.1111/vco.12795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 12/15/2021] [Accepted: 12/16/2021] [Indexed: 11/22/2022]
Abstract
The DNA damage response (DDR) is a complex signal transduction network that is activated when endogenous or exogenous genotoxins damage or interfere with the replication of genomic DNA. Under such conditions, the DDR promotes DNA repair and ensures accurate replication and division of the genome. High levels of genomic instability are frequently observed in cancers and can stem from germline loss‐of‐function mutations in certain DDR genes, such as BRCA1, BRCA2, and p53, that form the basis of human cancer predisposition syndromes. In addition, mutation and/or aberrant expression of multiple DDR genes are frequently observed in sporadic human cancers. As a result, the DDR is considered to represent a viable target for cancer therapy in humans and a variety of strategies are under investigation. Cancer is also a significant cause of mortality in dogs, a species that offers certain advantages for experimental oncology. Domestic dogs present numerous inbred lines, many of which display predisposition to specific forms of cancer and the study of which may provide insight into the biological basis of this susceptibility. In addition, clinical trials are possible in dogs and may lead to therapeutic insights that could ultimately be extended to humans. Here we review what is known specifically about the DDR in dogs and discuss how this knowledge could be extended and exploited to advance experimental oncology in this species.
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Affiliation(s)
- Beatriz Hernández-Suárez
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Poland
| | - David A Gillespie
- Instituto de Tecnologías Biomédicas, Facultad de Medicina, Campus Ciencias de la Salud, Universidad de La Laguna, La Laguna 38071, Tenerife, Spain
| | - Aleksandra Pawlak
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Poland
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Kliczkowska-Klarowicz K, Jagielski D, Czopowicz M, Sapierzyński RA. Demographic and clinical characteristics of dogs with centroblastic lymphoma. Vet World 2021; 14:49-55. [PMID: 33642785 PMCID: PMC7896917 DOI: 10.14202/vetworld.2021.49-55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 11/24/2020] [Indexed: 11/22/2022] Open
Abstract
Background and Aim: Centroblastic lymphoma (CBL) is the most common morphological type of lymphoma found in dogs; it is usually identified through cytology in veterinary clinical practice. This study aimed to identify the demographic and clinical characteristics of dogs with CBL that was diagnosed with cytology and immunocytochemistry. Materials and Methods: Dogs with a suspicion of lymphoma were diagnosed by cytology supported by immunocytochemistry with the use of the updated Kiel classification adapted for dogs. During the analyzed time period, 336 lymphomas were diagnosed in dogs, including 171 cases of CBL. Epidemiological and clinical data from the dogs with CBL were provisionally collected. Results: The epidemiology analysis revealed an increased risk of CBL in Rottweilers, golden retrievers, and Bernese mountain dogs. At admission, most of the dogs displayed generalized lymphadenopathy with spleen and liver enlargement. The most common hematological abnormality was leukocytosis due to neutrophilia. The most common biochemical abnormality was elevated alanine aminotransferase and alkaline phosphatase activities and selective hypoproteinemia due to hypoalbuminemia. Conclusion: Rottweilers, Bernese mountain dogs, and golden retrievers appear to be overrepresented among dogs with CBL. CBL is usually diagnosed at an advanced clinical stage according to the World Health Organization; however, it is usually accompanied by only minor hematological and biochemical abnormalities.
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Affiliation(s)
- Katarzyna Kliczkowska-Klarowicz
- Department of Pathology and Veterinary Diagnostics, Division of Pathology, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159c, 02-776 Warsaw, Poland
| | | | - Michał Czopowicz
- Division of Veterinary Epidemiology and Economics, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159c, 02-776 Warsaw, Poland
| | - Rafał A Sapierzyński
- Department of Pathology and Veterinary Diagnostics, Division of Pathology, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159c, 02-776 Warsaw, Poland
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Jark P, Fracacio C, Anai L, Silva M, Calazans S, Senhorello I, Costa M, Sequeira J, Sueiro F. Histopathological and immunophenotypical characterization of canine multicentric lymphoma in Brazil: a study of 203 cases. ARQ BRAS MED VET ZOO 2020. [DOI: 10.1590/1678-4162-11484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ABSTRACT The immunophenotype is regarded as an independent prognostic factor in high-grade lymphomas, seeing that lymphomas of T-cell origin are associated with shorter survival time. Although a number of studies have evaluated the immunophenotypical profile of lymphoma in the USA and Europe, Brazilian research on the matter remains scarce. Exact characterization of the histopathological type is crucial to establish proper treatment and prognosis. This study evaluated the database of immunohistochemistry laboratories that perform immunophenotyping of canine lymphoma in Brazil. A total of 203 cases of multicentric lymphoma were classified according to the WHO classification. Immunophenotyping was able to identify 71.4% lymphomas of B-cell line, 27.1% of T-cell line and 1.5% of non-B cells and non-T cell lines. Diffuse large B-cell lymphoma was the most common with 59.1% of the cases. Among T-cell lymphomas, lymphoblastic was the most common (11.33% of the cases). Even though canine lymphomas tend to be high-grade, indolent lymphomas comprised 11.82% of the cases and T-zone lymphoma was the most prevalent (8.86%). The immunophenotype of multicentric lymphoma in Brazil is similar to those in other parts of the world, which suggests similar etiologic factors to the development of this disease.
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Affiliation(s)
- P.C. Jark
- Universidade Brazil, Brazil; Universidade Estadual Paulista, Brazil
| | | | - L.A. Anai
- Universidade Estadual Paulista, Brazil
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Purzycka K, Peters LM, Desmas I, Davies O, Chang YM, Lara-Garcia A. Clinicopathological characteristics and prognostic factors for canine multicentric non-indolent T-cell lymphoma: 107 cases. Vet Comp Oncol 2020; 18:656-663. [PMID: 32163214 DOI: 10.1111/vco.12589] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 03/02/2020] [Accepted: 03/03/2020] [Indexed: 01/12/2023]
Abstract
Canine lymphoma, as the most common haematopoietic malignancy, encompasses a group of heterogeneous diseases and even within the T-cell immunophenotype, differences in clinical presentation and responses to treatment exist. The aim of this retrospective study was to determine outcomes and prognostic factors of 107 dogs with multicentric non-indolent T-cell lymphoma (TCL) receiving lomustine-based (70%) and non-lomustine-based (30%) treatment. The majority were Labradors, Boxers, mixed-breed dogs and Dogue de Bordeaux. Eighty-six percent were substage b, 77% had mediastinal involvement, 15% had suspected bone marrow involvement and 12% had other extra-nodal sites of disease. The overall response rate to induction therapy was 80%; dogs receiving procarbazine in the induction protocol (P = .042), dogs with neutrophil concentration below 8.7 × 10e9 /L (P = .006) and mitotic rate below 10 per 5 high power field (P = .013), had greater response rates. Median progression-free survival (PFS) for the first remission was 105 days; lack of expression of CD3 on flow cytometry (P < .0001) and pretreatment with steroid (P = .012) were significantly associated with shorter PFS. Median overall survival time (OST) was 136 days; co-expression of CD79a (P = .002), lack of CD3 expression on flow cytometry, presence of anaemia (P = .007), and monocytopenia (P = .002) were predictive of shorter OST. Multicentric non-indolent TCL in dogs is an aggressive cancer with new possible prognostic factors.
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Affiliation(s)
- Katarzyna Purzycka
- Queen Mother Hospital for Animals, Royal Veterinary College, University of London, North Mymms, UK.,Anderson Moores Veterinary Specialists, The Granary, Bunstead Barns, Winchester, UK
| | - Laureen M Peters
- Department of Pathobiology & Population Sciences, Royal Veterinary College, University of London, North Mymms, UK
| | | | | | - Yu-Mei Chang
- Research Support Office, Royal Veterinary College, London, UK
| | - Ana Lara-Garcia
- Queen Mother Hospital for Animals, Royal Veterinary College, University of London, North Mymms, UK
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10
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Jankowska U, Jagielski D, Czopowicz M, Sapierzyński R. Epidemiology, clinical and cytological features of lymphoma in Boxer dogs. Acta Vet Hung 2019; 67:224-240. [PMID: 31238736 DOI: 10.1556/004.2019.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The aim of this study was to evaluate the epidemiology, clinical and laboratory characteristics of canine lymphomas as well as some aspects of treatment outcomes. The study was conducted on Boxer dogs with lymphoma diagnosed by cytology and immunocytochemistry (CD3 and CD79 alpha). During the study period, lymphoma was diagnosed in 63 Boxers; 86.8% were T-cell (based on the Kiel classification: small clear cell lymphoma, pleomorphic small cell lymphoma, pleomorphic mixed T-cell lymphoma, pleomorphic large T-cell lymphoma, lymphoblastic lymphoma/acute lymphoblastic leukaemia) and 13.2% were B-cell lymphomas (according to the Kiel classification: B-cell chronic lymphocytic leukaemia, centroblastic/centroblastic polymorphic lymphoma). Overall survival (OS) was significantly longer in dogs with low-grade than with high-grade lymphoma (median OS of 6.8 and 4.7 months, respectively; P = 0.024). OS was not influenced by WHO clinical stage, WHO clinical substage, presence of splenomegaly, early administration of glucocorticoids or the time from the first presentation to the beginning of chemotherapy. There are no significant differences in clinical and laboratory parameters between low-grade and high-grade lymphomas. Boxer dogs are predisposed to T-cell lymphoma, with a predominance of high-grade tumour, especially pleomorphic, mixed small and large T-cell subtype. It is possible that Boxer dogs may respond less favourably to chemotherapy than patients of other breeds.
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Affiliation(s)
| | | | - Michał Czopowicz
- 2Laboratory of Veterinary Epidemiology and Economics, Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Warsaw, Poland
| | - Rafał Sapierzyński
- 3Division of Animal Pathomorphology, Department of Pathology and Veterinary Diagnostics and Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska str. 166, 02-787 Warsaw, Poland
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11
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Cheng KY, Soh PXY, Bennett PF, Williamson P. Lymphoma in Australian Border Collies: survey results and pedigree analyses. Aust Vet J 2019; 97:14-22. [DOI: 10.1111/avj.12780] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 10/16/2018] [Accepted: 10/18/2018] [Indexed: 01/15/2023]
Affiliation(s)
- KY Cheng
- Sydney School of Veterinary Science and School of Life and Environmental Sciences, Faculty of Science, Evelyn Williams Building B10; The University of Sydney; New South Wales 2006 Australia
| | - PXY Soh
- Sydney School of Veterinary Science and School of Life and Environmental Sciences, Faculty of Science, Evelyn Williams Building B10; The University of Sydney; New South Wales 2006 Australia
| | - PF Bennett
- Sydney School of Veterinary Science and School of Life and Environmental Sciences, Faculty of Science, Evelyn Williams Building B10; The University of Sydney; New South Wales 2006 Australia
| | - P Williamson
- Sydney School of Veterinary Science and School of Life and Environmental Sciences, Faculty of Science, Evelyn Williams Building B10; The University of Sydney; New South Wales 2006 Australia
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12
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Bennett PF, Taylor R, Williamson P. Demographic risk factors for lymphoma in Australian dogs: 6201 cases. J Vet Intern Med 2018; 32:2054-2060. [PMID: 30307659 PMCID: PMC6271309 DOI: 10.1111/jvim.15306] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 06/27/2018] [Accepted: 07/24/2018] [Indexed: 12/22/2022] Open
Abstract
Background Lymphoma is common in the dog. Studies of population risk factors primarily have been derived from referral institution or insurance data. Objective To identify and quantify the host risk factors for lymphoma in a broad population of Australian dogs. Animals Data on 6201 client owned dogs were retrieved from a commercial veterinary laboratory, a general practice group and 2 referral hospitals. Methods Data collected included breed, sex, and neuter status. A reference population of 640 105 dogs was generated from the referral hospitals and from council registration data. The risk of lymphoma by sex and neuter status was calculated as odds ratios (OR). Results The study identified 30 breeds at increased risk of lymphoma, 15 that have not been reported previously, and 26 breeds at decreased risk, 18 that have not been reported previously. Males were over represented compared to females with an OR of 1.1 (95% CI, 1.1–1.2; P < .001). Neutered animals were at higher risk compared to intact animals with an OR of 3.2 (95% CI, 2.9–3.5) which was found in both males (OR, 2.8; 95% CI; 2.5–3.2) and females (OR, 4.4; 95% CI, 3.5–5.1). Conclusions and Clinical Importance Breed, sex, and neuter status alter the risk of lymphoma in dogs. These 3 factors must be considered when evaluating lymphoma risk as potential markers of underlying differences in disease etiology. Comparison of breeds at increased and decreased risk could be advantageous when evaluating specific etiological factors.
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Affiliation(s)
- Peter F Bennett
- Faculty of Science, Sydney School of Veterinary Science, University of Sydney, New South Wales, Australia
| | - Rosanne Taylor
- Faculty of Science, Sydney School of Veterinary Science, University of Sydney, New South Wales, Australia
| | - Peter Williamson
- Faculty of Science, School of Life and Environmental Science, University of Sydney, New South Wales, Australia
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13
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Morgan E, O'Connell K, Thomson M, Griffin A. Canine T cell lymphoma treated with lomustine, vincristine, procarbazine, and prednisolone chemotherapy in 35 dogs. Vet Comp Oncol 2018; 16:622-629. [DOI: 10.1111/vco.12430] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 07/02/2018] [Accepted: 07/04/2018] [Indexed: 12/12/2022]
Affiliation(s)
- E. Morgan
- Department of Oncology; Animal Referral Hospital Brisbane; Brisbane Australia
| | - K. O'Connell
- Department of Oncology; Animal Referral Hospital Brisbane; Brisbane Australia
| | - M. Thomson
- Department of Oncology; Animal Referral Hospital Brisbane; Brisbane Australia
| | - A. Griffin
- Department of Oncology; Animal Referral Hospital Brisbane; Brisbane Australia
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14
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Comazzi S, Marelli S, Cozzi M, Rizzi R, Finotello R, Henriques J, Pastor J, Ponce F, Rohrer-Bley C, Rütgen BC, Teske E. Breed-associated risks for developing canine lymphoma differ among countries: an European canine lymphoma network study. BMC Vet Res 2018; 14:232. [PMID: 30081964 PMCID: PMC6090884 DOI: 10.1186/s12917-018-1557-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 07/30/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Canine breeds may be considered good animal models for the study of genetic predisposition to cancer, as they represent genetic clusters. From epidemiologic and case collection studies it emerges that some breeds are more likely to develop lymphoma or specific subtypes of lymphoma but available data are variable and geographically inconsistent. This study was born in the context of the European Canine Lymphoma Network with the aim of investigating the breed prevalence of canine lymphoma in different European countries and of investigating possible breed risk of lymphoma overall and/or different lymphoma subtypes. RESULTS A total of 1529 canine nodal lymphoma cases and 55,529 control cases from 8 European countries/institutions were retrospectively collected. Odds ratios for lymphoma varied among different countries but Doberman, Rottweiler, boxer and Bernese mountain dogs showed a significant predisposition to lymphoma. In particular, boxers tended to develop T-cell lymphomas (either high- or low-grade) while Rottweilers had a high prevalence of B-cell lymphomas. Labradors were not predisposed to lymphoma overall but tended to develop mainly high-grade T-cell lymphomas. In contrast with previous studies outside of Europe, the European golden retriever population did not show any possible predisposition to lymphoma overall or to specific subtypes such as T-zone lymphoma. CONCLUSION Further prospective studies with more precise and consistent subtype identification are needed to confirm our retrospective results and to create the basis for the investigation of possible genes involved in different predispositions.
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Affiliation(s)
- Stefano Comazzi
- Department of Veterinary Medicine, University of Milan, Via Celoria 10, 20133, Milan, Italy.
| | - Stefano Marelli
- Department of Veterinary Medicine, University of Milan, Via Celoria 10, 20133, Milan, Italy
| | - Marzia Cozzi
- Department of Veterinary Medicine, University of Milan, Via Celoria 10, 20133, Milan, Italy
| | - Rita Rizzi
- Department of Veterinary Medicine, University of Milan, Via Celoria 10, 20133, Milan, Italy
| | - Riccardo Finotello
- Department of Small Animal Clinical Science, Institute of Veterinary Science, University of Liverpool, Liverpool, UK
| | | | - Josep Pastor
- Department of Animal Medicine and Surgery, University Autonoma of Barcelona, Barcelona, Spain
| | - Frederique Ponce
- Department of Internal Medicine, University of Lyon, Lyon, France
| | - Carla Rohrer-Bley
- Division of Radiation Oncology, Department of Small Animals, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Barbara C Rütgen
- Department of Pathobiology, University of Veterinary Medicine, Vienna, Austria
| | - Erik Teske
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
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15
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Pinello KC, Santos M, Leite-Martins L, Niza-Ribeiro J, de Matos AJ. Immunocytochemical study of canine lymphomas and its correlation with exposure to tobacco smoke. Vet World 2017; 10:1307-1313. [PMID: 29263590 PMCID: PMC5732334 DOI: 10.14202/vetworld.2017.1307-1313] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 10/04/2017] [Indexed: 11/26/2022] Open
Abstract
Aim: Canine lymphoma is one of the most common canine neoplasms, but little is known regarding the effects of exposure to tobacco smoke on their biologic behavior. As cytology is the most frequent diagnostic method of canine lymphoma, the aims of this study were to perform an immunocytochemical study of canine lymphomas, including subtyping and cell proliferation analysis, and to establish their correlation with tobacco smoke exposure. Materials and Methods: A total of 23 dogs diagnosed with lymphoma were subjected to careful fine-needle biopsies of enlarged lymph nodes. The smears were air-dried, fixed with cold acetone, and immunocytochemically stained using CD3, PAX5, and Ki-67. Owners were requested to complete an epidemiologic questionnaire. Results: According to the updated Kiel classification, 65% were B-cell lymphomas - three low grade (LG) and 12 high grade (HG) and 35% were T-cell -two LG and six HG. Thirteen tumors presented high Ki67 indexes (>40%) (11 HG and 2 LG), two revealed moderate ones (20-40%) (1 HG and 1 LG), and three had low indexes (≤20%) (1 HG and 2 LG). Both a significant positive correlation and a significant linear-by-linear association (p=0.018) were observed between high Ki67 indexes and smoking owners (r=0.753, p=0.002) as well as with the number of smokers in the household (r=0.641, p=0.001). Moreover, the mean percentage of Ki67+ cells from the group of “smoker owners” was statically higher (p=0.011) than that from the “non-smoker owners.” Conclusion: The results suggest that cytological diagnosis of canine lymphomas benefits from being complemented with immunocytochemical studies that include subtyping and assessment of proliferative activity, both contributing for the prognosis and therapeutic planning. Furthermore, exposure to tobacco smoke seems to be related to the biological behavior of canine lymphomas.
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Affiliation(s)
- K C Pinello
- Department of Veterinary Clinics, Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal
| | - M Santos
- Department of Microscopy, Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal
| | - L Leite-Martins
- Department of Veterinary Clinics, Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal
| | - J Niza-Ribeiro
- Department of Population Studies, Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal.,EPI Unit, Institute of Public Health, ISPUP - University of Porto, Porto, Portugal
| | - A J de Matos
- Department of Veterinary Clinics, Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal.,Animal Science and Study Centre, Food and Agrarian Sciences and Technologies Institute, University of Porto, Porto, Portugal
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16
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Treggiari E, Elliott JW, Baines SJ, Blackwood L. Temozolomide alone or in combination with doxorubicin as a rescue agent in 37 cases of canine multicentric lymphoma. Vet Comp Oncol 2017; 16:194-201. [PMID: 28766920 DOI: 10.1111/vco.12335] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 05/28/2017] [Accepted: 06/26/2017] [Indexed: 12/22/2022]
Affiliation(s)
- E. Treggiari
- Small Animal Teaching Hospital; University of Liverpool, School of Veterinary Science; Neston Cheshire UK
- Willows Veterinary Centre and Referral Service; Solihull West Midlands UK
| | - J. W. Elliott
- Small Animal Teaching Hospital; University of Liverpool, School of Veterinary Science; Neston Cheshire UK
- Willows Veterinary Centre and Referral Service; Solihull West Midlands UK
| | - S. J. Baines
- Willows Veterinary Centre and Referral Service; Solihull West Midlands UK
| | - L. Blackwood
- Small Animal Teaching Hospital; University of Liverpool, School of Veterinary Science; Neston Cheshire UK
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17
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Affiliation(s)
- Antony S. Moore
- Veterinary Oncology Consultants; Wauchope New South Wales 2446 Australia
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