This was expected as the activation of the TRP-KYN pathway, accompanied with an elevation in WBC, Lymph and ALT, are common responses to systemic and/or liver inflammation [93, 94]; though no correlations were evident for the koalas in the diseased group only, nor the clinically normal only, which indicated KYN:TRP to be a promising non-specific inflammatory biomarker in koalas. The gene discussed is GPT; the disease is Hepatitis.