Cinacalcet in Paediatric Secondary Hyperparathyroidism (SHPT) Due to Chronic Kidney Disease (CKD)
Secondary Hyperparathyroidism
About this trial
This is an interventional treatment trial for Secondary Hyperparathyroidism focused on measuring Cinacalcet, PK, Secondary Hyperparathyroidism, Paediatric, Chronic Kidney Disease, Dialysis
Eligibility Criteria
Inclusion Criteria:
- Parents'/guardian written informed consent, and child's assent
- Age > 2 and <18 years;
- A dry body weight (BW) >10.49 Kg in males and >9.95 Kg in females, respectively;
- Inpatient or outpatient status at the time of enrolment;
- Males or females. Female subjects sexually active must be neither pregnant nor breastfeeding, and must lack childbearing potential from screening visit to the end of the safety follow-up
- On stable hemodialysis (HD) or peritoneal dialysis (PD) for their CKD for at least one month before entering the 6-month pre-treatment period;
- Plasma iPTH levels > 300 pg/mL, AND
- Plasma Ca levels > 9.4 mg/dL (with normal serum albumin level), AND
- Plasma P levels <6.5 mg/dL in patients younger than 6 years, or <6.0mg/dL in older patients, OR
- Ca x P product > 60;
- Records' availability for the following parameters 6 months prior to study entry: demographic information, physical examination, height and dry weight, auxological/anthropometric indices, blood pressure values, Kt/V urea, plasma iPTH, calcium, phosphorus, and alkaline phosphatise levels, blood pH and bicarbonate, serum creatinine/urea, C reactive protein (CRP) levels, liver function tests, blood count, blood 25(OH) vitamin D3 level.
Exclusion Criteria:
- The following laboratory values: Hb<9.0 g/dL, WBC<2000/mm3 (2x109/L), platelets <150,000/mm3 (150x109/L) only in subjects who are otherwise eligible for PK/PD assessments; abnormal liver function, defined by a total bilirubin ≥2 times the upper limit of normal values, ASAT, ALAT, γ-GT levels ≥2 times the ULN values.
- Any other lab values that in the opinion of the investigator might place the subject at unacceptable risk for participation in the study.
- History of malignancy (active malignancy, or off therapy since less than 1 year)
- History of diseases causing hypercalcemia
- Chronic inflammatory diseases (C-Reactive Protein-CRP >2 times the upper limit of normal values) requiring a concomitant corticosteroid or immunosuppressive therapy
- History of infectious diseases (including opportunistic infections) within 4 weeks prior to study entry
- Evidence as assessed by the Investigator of active or latent bacterial, viral or fungal infections at the time of potential enrollment, including subjects with evidence of HIV infection.
- Hepatitis-B surface antigen-positive subjects only in subjects who are otherwise eligible for PK/PD assessments
- Hepatitis C antibody-positive subjects who are also PCR-positive or RIBA positive only in subjects who are otherwise eligible for PK/PD assessments
- Use of recombinant human growth hormone therapy
- Use of drugs that interact with cinacalcet disposition
- Previous use of cinacalcet
Sites / Locations
- U.O. Nefrologia e Dialisi- Ospedale Giovanni XXIII
- U.O. Nefrologia e Dialisi - Istituto di Ricovero e Cura a Carattere Scientifico Giannina GasliniRecruiting
- U.O. Nefrologia e Dialisi Pediatrica - Clinica De Marchi
- U.O. Nefrologia e Dialisi - Ospedale Santobono
- U.O. Nefrologia e Dialisi - Ospedale Bambino Gesù
Arms of the Study
Arm 1
Experimental
cinacalcet tab or extemporaneous solution po added to SoC
Subjects who meet all inclusion/exclusion criteria at baseline will be given cinacalcet 30mg film-coated tablet, for oral use added to phosphate binders and vitamin D analogue. For subjects receiving a cinacalcet dose <30mg, commercially available cinacalcet 30mg tab will be ground and diluted with a 5% dextrose solution. Then, an aliquot of this solution corresponding to the individually prescribed dose will be administered as indicated. Initial dosing of cinacalcet will be 0.5-0.75mg/kg or 30 mg po once daily (OD) each evening with food. During the cinacalcet dose-titration 6-month period for efficacy assessment, the dose will be increased on monthly basis by 0.5 mg/kg or by 30mg OD to achieve the target iPTH value <180 pg/mL, as tolerated by the subject, up to maximum of 180mg OD in absence of signs of hypocalcemia, according to the current summary of product characteristics.