Open AccessToceranib phosphate in the management of canine insulinoma: A retrospective multicentre study of 30 cases (2009–2019)
Author(s) -
SheppardOlivares Sabina,
Bello Nora M.,
Johannes Chad M.,
Hocker Samuel E.,
Biller Barbara,
Husbands Brian,
Snyder Elizabeth,
McMillan Mattison,
McKee Talon,
Wouda Raelene M.
Publication year - 2022
Publication title -
veterinary record open
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.504
H-Index - 12
eISSN - 2052-6113
pISSN - 2399-2050
DOI - 10.1002/vro2.27
Subject(s) - insulinoma , medicine , retrospective cohort study , adverse effect , gastroenterology , confidence interval , surgery , pancreas
Background Insulinomas are the most common tumour of the endocrine pancreas in dogs. These malignant tumours have a high metastatic rate and limited chemotherapeutic options. The multi‐receptor tyrosine kinase inhibitor sunitinib malate has benefit in the treatment of metastatic insulinoma in people. Toceranib phosphate, an analogous veterinary agent, may provide benefit for dogs. Methods A retrospective study describing the extent and duration of clinical outcomes and adverse events (AEs) in dogs diagnosed with insulinoma and receiving toceranib. Results Records for 30 dogs diagnosed with insulinoma and having received toceranib were identified from a medical record search of five university and eight referral hospitals. The median progression‐free interval and overall survival time were 561 days (95% confidence interval (CI): [246, 727 days]) and 656 days (95% CI: [310, 1045 days]), respectively. Of the dogs for which the canine Response evaluation criteria for solid tumours tool could be applied, the majority (66.7%) showed either a complete response, partial response or stable disease. Time to clinical progression was associated with prior intervention and type of veterinary practice. Larger dogs were at increased risk for disease progression and death. No novel AEs were reported. Conclusions Most dogs diagnosed with insulinoma and receiving toceranib appeared to have a clinical benefit. Randomised, prospective studies are needed to better elucidate and objectively quantify the potential effect and survival benefit of toceranib therapy for management of insulinoma in dogs.