Canine T cell lymphoma treated with lomustine, vincristine, procarbazine, and prednisolone chemotherapy in 35 dogs

Vet Comp Oncol. 2018 Dec;16(4):622-629. doi: 10.1111/vco.12430. Epub 2018 Aug 16.

Abstract

Canine T cell lymphoma has previously been found to be a poor prognostic indicator compared with its B cell counterpart. The cyclophosphamide, doxorubicin, vincristine, and prednisolone protocol is widely accepted as a first line treatment for canine lymphoma. There have been several studies investigating alternative protocols for T cell lymphoma. This study investigated the use of a modified lomustine, vincristine, procarbazine and prednisolone protocol as a first line treatment in 35 dogs with T Cell lymphoma. Median progression free survival (PFS) time for all 35 dogs was 431 days with a 6-month, 1-year, 2-year, and 3-year PFS of 69%, 54%, 29%, and 12%. Median survival time (MST) was 507 days. Twenty-nine dogs attained a complete response and had a median PFS time of 509 days. Thirty dogs experienced adverse events during the protocol, with 73% of these being grade 1 or 2. This protocol has shown increased median PFS time and MST compared with previous studies and suggests its use as a first line chemotherapy protocol against canine T cell lymphoma.

Keywords: LOPP; T cell lymphoma; canine; chemotherapy; oncology.

MeSH terms

  • Animals
  • Antineoplastic Combined Chemotherapy Protocols / administration & dosage*
  • Antineoplastic Combined Chemotherapy Protocols / therapeutic use
  • Disease-Free Survival
  • Dog Diseases / drug therapy*
  • Dogs
  • Female
  • Lomustine / administration & dosage*
  • Lomustine / therapeutic use
  • Lymphoma, T-Cell / drug therapy
  • Lymphoma, T-Cell / veterinary*
  • Male
  • Prednisolone / administration & dosage*
  • Prednisolone / therapeutic use
  • Procarbazine / administration & dosage*
  • Procarbazine / therapeutic use
  • Survival Analysis
  • Vincristine / administration & dosage*
  • Vincristine / therapeutic use

Substances

  • Procarbazine
  • Vincristine
  • Lomustine
  • Prednisolone