<qa>  What is the maximum tolerated dose received in the parent study?For the first 12 weeks in this extension study, patients will receive ATYR1940 at the highest tolerated dose received in the parent study; no dose adjustments are allowed during this 12-week period. After 12 weeks, if the patient is demonstrating good tolerability, the ATYR1940 dose may be increased on a patient-specific basis at the Investigators discretion, in consultation with the Sponsor and Medical Monitor. ATYR1940 dose increases to 3.0 mgkg are not permissible. 