Inclusion Criteria:  Subjects who have completed the antecedent AMO-02-MD-2-003 study through V11 Written, voluntary informed consent must be obtained before any study related procedures are conducted. Where a parent or LAR provides consent, there must also be assent from the subject (as required by local regulations) Subject's caregiver must be willing and able to support participation for duration of study Subject must be willing and able to comply with the required food intake restrictions as outlined per protocol  Exclusion Criteria:  Subjects who discontinued prematurely from the antecedent AMO-02-MD-2-003 study Body mass index (BMI) less than 13.5 kg/m² or greater than 40 kg/m² New or change in medications/therapies within 4 weeks prior to Eligibility/Baseline Visit Use within 4 weeks prior to Eligibility/Baseline Visit of strong CYP3A4 inhibitors (eg.clarithromycin, telithromycin, ketoconazole, itraconazole, posaconazole, nefazodone, idinavir and ritonavir) Concurrent use of drugs metabolized by CYP3A4 with a narrow therapeutic window (e.g. warfarin and digitoxin) Current enrollment in a clinical trial of an investigational drug or enrollment in a clinical trial of an investigational drug in the last 6 months other than the AMO-02- MD-2-003 study Existing or historical medical conditions or complications (eg. neurological, cardiovascular, renal, hepatic, gastrointestinal, endocrine or respiratory disease) that may impact the interpretability of the study results Hypersensitivity to tideglusib or any components of its formulation including allergy to strawberry