Cinacalcet in Paediatric Secondary Hyperparathyroidism (SHPT) Due to Chronic Kidney Disease (CKD)

Twelve-month, Multicenter, Intra-subject Controlled (Retrospective-prospective), Open-label, Active-treatment Study to Evaluate the Efficacy, Safety, Tolerability and Pharmacokinetics (PK) of Cinacalcet Hydrochloride for the Treatment of Secondary Hyperparathyroidism (SHPT) in Paediatric Subjects With Chronic Kidney Disease (CKD) on Dialysis, Followed by 12-month Study Extension.

Twelve-month, multicenter, intra-subject controlled (retrospective-prospective), open-label, active-treatment study to evaluate the dose-response and pharmacokinetics (PK) of cinacalcet HCl for the treatment of Secondary Hyperparathyroidism (SHPT) in paediatric subjects with chronic kidney disease (CKD) on dialysis, followed by 12-month study extension.

Study Overview

• Status: Unknown
• Conditions: Secondary Hyperparathyroidism
• Intervention / Treatment: Drug: Cinacalcet HCl

Detailed Description

This multicenter, intra-subject controlled, open-label, active-treatment study will assess in children affected by Secondary Hyperparathyroidism, aged 2-18 years on chronic dialysis not responsive to standard of care (SoC) therapy, the response after 6-month cinacalcet compared intra-subject to SoC alone at screening visit 6 months prior to cinacalcet start. Secondary objectives are to evaluate effects on growth over 18 months and PK profile. At baseline children have PTH levels>300 pg/mL, plasma P<6 mg/dL, and Ca 8.4-10.5 mg/dL, or Ca x P product>60 not responsive to SoC. Initial dosing of cinacalcet will be 0.5-0.75 mg/Kg per os OD to be adjusted up to a max of 180mg OD for target PTH values<180 pg/mL in absence of hypocalcemia. Thirty children will be enrolled at 12 centres participating in a national paediatric dialysis registry, corresponding to an α=0.05 and a power of 80% using the McNemar test, with an expected % of responders to cinacalcet or SoC of 40% or 5% respectively, with a drop-out rate of 15. Primary study endpoint (EP) will be the % of children who will have a reduction from baseline >25% in mean PTH levels during the 6-mo efficacy-assessment period. Among secondary EPs over 18 mos will be the % of patients with mean PTH levels<300 pg/mL; the % change in PTH, Ca, P values, and the Ca x P product; PK profile (or population profile by age) and its correlation with PTH and testosterone levels; auxological indices and growth velocity; % of children with treatment-emergent adverse events and lab abnormalities; retention on treatment and reasons of treatment withdrawal. The study will evaluate whether cinacalcet represents a safe and effective therapeutic option for SHPT children.

• Study Type: Interventional
• Enrollment (Anticipated): 30
• Phase: Phase 2; Phase 3

Contacts and Locations

• Study Contact: Name: Enrico E. Verrina, MD; Phone Number: +390105636276; Email: enricoverrina@ospedale-gaslini.ge.it
• Study Contact Backup: Name: Ornella Della Casa Alberighi, MD PhD; Phone Number: +390105636461; Email: ornelladellacasa@ospedale-gaslini.ge.it

Study Locations

• Italy
  • Bari, Italy, 70100
    • Active, not recruiting
    • U.O. Nefrologia e Dialisi- Ospedale Giovanni XXIII
  • Genoa, Italy, 16147
    • Recruiting
    • U.O. Nefrologia e Dialisi - Istituto di Ricovero e Cura a Carattere Scientifico Giannina Gaslini
    • Contact: Ornella Della Casa Alberighi, MD PhD; Phone Number: +390105636461; Email: ornelladellacasa@ospedale-gaslini.ge.it
    • Contact: Enrico E Verrina, MD; Phone Number: +390105636276; Email: enricoverrina@ospedale-gaslini.ge.it
    • Principal Investigator: Enrico E. Verrina, MD
  • Milan, Italy, 20100
    • Active, not recruiting
    • U.O. Nefrologia e Dialisi Pediatrica - Clinica De Marchi
  • Naples, Italy, 80100
    • Active, not recruiting
    • U.O. Nefrologia e Dialisi - Ospedale Santobono
  • Rome, Italy, 00100
    • Active, not recruiting
    • U.O. Nefrologia e Dialisi - Ospedale Bambino Gesù

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 2 years to 18 years (ADULT, CHILD)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

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

Study Plan

How is the study designed?

Design Details

• Primary Purpose: TREATMENT
• Allocation: NA
• Interventional Model: SINGLE_GROUP
• Masking: NONE

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

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.

Drug: Cinacalcet HCl; The 6-month pre-treatment period will be followed by a run-in period with a baseline evaluation prior to the drug administration, followed by a 6-month cinacalcet dose titration period, during which the dose will be increased on monthly basis by 0.5 mg/kg or by 30 mg OD up to the achievement of target iPTH value <180 pg/mL as tolerated by the patient; Other Names: Mimpara®

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Composite EP, e.g. the proportion of patients who will have a reduction from baseline of >= 25% in mean iPTH levels with concomitant values for plasma P <6 mg/dL and Ca between 8.4 and 10.5 mg/dL or the Ca x P product <60	This composite EP will address the needed information on the appropriate dose of cinacalcet to be adopted in paediatric patients, and especially in younger children, as well as on the impact of treatment with calcimimetics on serum Ca and P levels, and on SHPT control over the long term	6 months

Secondary Outcome Measures

Outcome Measure	Time Frame
The long term control of iPTH level < 300 pg/mL	18 months
The long term control of PTH, Ca, P, and the Ca x P product values	18 months
The PK/ PD ( iPTH and testosterone) profile at individual patient level	12 months
The long term auxological indices and patient growth velocity during cinacalcet treatment	18 months
The proportion of patients with treatment-emergent adverse events (AEs), serious AEs (SAEs), and laboratory abnormalities over long term	18 months

Collaborators and Investigators

• Sponsor: ENRICO VERRINA
• Investigators: Principal Investigator: Enrico E. Verrina, MD, U.O. Nefrologia e Dialisi; Istituto di Ricovero e Cura a Carattere Scientifico Giannina Gaslini

Publications and helpful links

General Publications

• Klaus G, Watson A, Edefonti A, Fischbach M, Ronnholm K, Schaefer F, Simkova E, Stefanidis CJ, Strazdins V, Vande Walle J, Schroder C, Zurowska A, Ekim M; European Pediatric Dialysis Working Group (EPDWG). Prevention and treatment of renal osteodystrophy in children on chronic renal failure: European guidelines. Pediatr Nephrol. 2006 Feb;21(2):151-9. doi: 10.1007/s00467-005-2082-7. Epub 2005 Oct 25.
• Silverstein DM, Kher KK, Moudgil A, Khurana M, Wilcox J, Moylan K. Cinacalcet is efficacious in pediatric dialysis patients. Pediatr Nephrol. 2008 Oct;23(10):1817-22. doi: 10.1007/s00467-007-0742-5. Epub 2008 Feb 21.
• Muscheites J, Wigger M, Drueckler E, Fischer DC, Kundt G, Haffner D. Cinacalcet for secondary hyperparathyroidism in children with end-stage renal disease. Pediatr Nephrol. 2008 Oct;23(10):1823-9. doi: 10.1007/s00467-008-0810-5. Epub 2008 May 27.
• Platt C, Inward C, McGraw M, Dudley J, Tizard J, Burren C, Saleem MA. Middle-term use of Cinacalcet in paediatric dialysis patients. Pediatr Nephrol. 2010 Jan;25(1):143-8. doi: 10.1007/s00467-009-1294-7. Epub 2009 Oct 17.
• Harris RZ, Padhi D, Marbury TC, Noveck RJ, Salfi M, Sullivan JT. Pharmacokinetics, pharmacodynamics, and safety of cinacalcet hydrochloride in hemodialysis patients at doses up to 200 mg once daily. Am J Kidney Dis. 2004 Dec;44(6):1070-6. doi: 10.1053/j.ajkd.2004.08.029.
• Padhi D, Harris RZ, Salfi M, Noveck RJ, Sullivan JT. Pharmacokinetics and pharmacodynamics of cinacalcet in hepatic impairment : phase I, open-label, parallel-group, single-dose, single-centre study. Clin Drug Investig. 2008;28(10):635-43. doi: 10.2165/00044011-200828100-00004.
• Cangemi G, Barco S, Verrina EE, Scurati S, Melioli G, Della Casa Alberighi O. Micromethod for quantification of cinacalcet in human plasma by liquid chromatography-tandem mass spectrometry using a stable isotope-labeled internal standard. Ther Drug Monit. 2013 Feb;35(1):112-7. doi: 10.1097/FTD.0b013e318278dc69.

Study record dates

Study Major Dates

• Study Start: March 1, 2010
• Primary Completion (ANTICIPATED): December 1, 2013
• Study Completion (ANTICIPATED): December 1, 2013

Study Registration Dates

• First Submitted: November 22, 2011
• First Submitted That Met QC Criteria: November 23, 2011
• First Posted (ESTIMATE): November 24, 2011

Study Record Updates

• Last Update Posted (ESTIMATE): November 24, 2011
• Last Update Submitted That Met QC Criteria: November 23, 2011
• Last Verified: November 1, 2011

More Information

Terms related to this study

• Keywords: PK; Chronic Kidney Disease; Dialysis; Cinacalcet; Paediatric; Secondary Hyperparathyroidism
• Additional Relevant MeSH Terms: Pathologic Processes; Neoplasms; Urologic Diseases; Endocrine System Diseases; Renal Insufficiency; Parathyroid Diseases; Neoplastic Processes; Kidney Diseases; Renal Insufficiency, Chronic; Hyperparathyroidism; Neoplasm Metastasis; Hyperparathyroidism, Secondary; Physiological Effects of Drugs; Hormones, Hormone Substitutes, and Hormone Antagonists; Hormone Antagonists; Calcium-Regulating Hormones and Agents; Calcimimetic Agents; Cinacalcet
• Other Study ID Numbers: IGG_ev_003; 2009-016797-32 (EUDRACT_NUMBER)