I et ublindet forsøg (AMB222) blev Volibris undersøgt hos 36 patienter til vurdering af forekomst af øgede serumaminotransferasekoncentrationer hos patienter, som tidligere var ophørt med anden ERA- behandling pga. abnormiteter i aminotransferase.
In an open label study (AMB222), Volibris was studied in 36 patients to evaluate the incidence of increased serum aminotransferase concentrations in patients who had previously discontinued other ERA therapy due to aminotransferase abnormalities.