Overview

This is a multi-center, open, single-arm phase IIb clinical study comprising 2 parts, which Part A will enroll about 110 subjects, and Part B will enroll about 190 subjects to investigate long-term efficacy and safety of MT1013 after treatment.The treatment duration for Part A MAD study is 52 weeks and the duration for Part B study is 26 weeks.

Eligibility

Inclusion Criteria:

• 1. Subject capable of understanding written information ,willing to participate in, and provide a written informed consent; 2.Male or female subjects must be at least 18 years old when signing the informed consent; 3.The subjects must undergo maintenance hemodialysis three times a week or five times two weeks for at least three months； 4.Dialysate calcium concentration≥1.25 mmol/L (2.5 mEq/L); 5.Diagnosed of Secondary Hyperparathyroidism (SHPT);

Exclusion Criteria:

• 1.Primary hyperparathyroidism; 2.Refusal to discontinue cinacalcet, etelcalcetide, or other calcimimetics during the study; 3.Has used RANKL inhibitors such as denosumab within 6 months before screening. 4.Diagnosed with gastrointestinal bleeding within 6 months prior to screening; 5.Subjects with severe uncontrolled hypertension, defined as systolic blood pressure>180 mmHg and/or diastolic blood pressure>110 mmHg, despite optimal drug treatment prior to enrollment; 6.The subjects underwent parathyroidectomy within 6 months prior to screening, or plan to undergo parathyroidectomy during the study; 7.Subjects are allergic or intolerant to any component of the investigational drug； 8.History of epileptic seizures or ongoing epilepsy related treatment within 1 year prior to screening;