However, in a previous study on onychomycosis-causing strains of Auxarthron ostraviense and Auxarthron umbrinum (transferred to Malbranchea in the present study) reduced susceptibility to AMB, ITC and PSC was reported, but a high susceptibility to TRB was observed (Hubka et al. 2013). The gene discussed is THRB; the disease is tinea unguium.