D-003, a mixture of high aliphatic primary acids purified from sugar cane wax, has shown cholesterol-lowering, anti-platelet and antioxidant effects. Previous data demonstrated that D-003 was not toxic or carcinogenic when given orally to Sprague–Dawley rats up to 1500mg/kg. This study investigated the potential long-term oral carcinogenicity of D-003 in a second rodent species. OF1 mice of both sexes were randomized into 4 groups treated for 18 months: a vehicle control group and three groups treated with D-003 at 50, 500 and 1500mg/kg, respectively, orally gavaged 6 days per week. Mortality, clinical symptoms, weight gain, food consumption, organ weight, blood indicators and tumour incidence did not show significant differences between control and treated groups. D-003 did not increase the frequency of neoplastic or non-neoplastic lesions with respect to the controls. Lesions observed in the study were consistent with spontaneous lesions reported for this specie. It can be concluded that D-003 did not result toxic or carcinogenic when given orally to OF1 mice for 18 months and that the highest dose was a NOAEL, consistent with results of the oral carcinogenicity study of D-003 in rats.
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