| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| Secondary Hyperparathyroidism (sHPT) Receiving Maintenance Haemodialysis |  
| Iperparatiroidismo secondario (SHPT) nei pazienti pediatrici con malattia renale cronica (CKD) in emodialisi. |  | 
| E.1.1.1 | Medical condition in easily understood language | 
| Secondary Hyperparathyroidism (sHPT) |  
| Iperparatiroidismo secondario (sHPT) |  | 
| E.1.1.2 | Therapeutic area | Diseases [C] - Hormonal diseases [C19] | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 20.0 |  
| E.1.2 | Level | PT |  
| E.1.2 | Classification code | 10020708 |  
| E.1.2 | Term | Hyperparathyroidism secondary |  
| E.1.2 | System Organ Class | 10014698 - Endocrine disorders |  | 
| E.1.3 | Condition being studied is a rare disease | No | 
| E.2 Objective of the trial | 
| E.2.1 | Main objective of the trial | 
| To evaluate the efficacy of etelcalcetide in reducing the intact parathyroid hormone (iPTH) level in children ages > = 2 to < 18 years with secondary hyperparathyroidism (SHPT) receiving maintenance hemodialysis. |  
| Valutare l'efficacia di etelcalcetide nel ridurre i livelli di paratormone intatto (iPTH) in bambini di età compresa tra > = 2 e < 18 anni con iperparatiroidismo secondario (SHPT) sottoposti emodialisi di mantenimento |  | 
| E.2.2 | Secondary objectives of the trial | 
| - To evaluate the efficacy of etelcalcetide in reducing the iPTH level by > 30%. - To characterize change in laboratory markers of chronic kidney disease (CKD) following etelcalcetide treatment.
 - To characterize the safety of etelcalcetide treatment based on laboratory values.
 - To characterize the pharmacokinetic (PK) of etelcalcetide treatment after single and multiple doses.
 |  
| - Valutare l'efficacia di etelcalcetide nel ridurre i livelli di iPTH di > 30% - Caratterizzare la mutazione dei marker di laboratorio della malattia renale cronica (CKD) in seguito al trattamento con etelcalcetide
 - Caratterizzare la sicurezza del trattamento con etelcalcetide sulla base dei valori di laboratorio
 - Caratterizzare la farmacocinetica (PK) del trattamento con etelcalcetide dopo dose singola e dose multipla
 |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| - Subject's legally acceptable representative has provided informed consent when the subject is legally too young to provide informed consent and the subject has provided written assent based on local regulations and/or guidelines prior to any study-specific activities/procedures being initiated. - Male or female subjects > = 2 to < 18 years of age at the time of enrollment.
 - Targeted Dry weight > = 7 kg at the time of screening week -1
 - Diagnosed with CKD and SHPT undergoing hemodialysis/hemodiafiltration TIW at the time of screening > = 1 month.
 - Diagnosis of SHPT with the mean of the 2 consecutive central laboratory iPTH values > 300 pg/mL during screening, on separate days and within 2 weeks of enrollment obtained from the central laboratory during screening.
 
 *Please, refers to procotol for the full list.
 |  
| - Il  rappresentante legalmente accettabile del soggetto ha fornito il consenso informato quando il soggetto è legalmente troppo giovane per fornire il consenso informato e il paziente ha fornito un assenso scritto sulla base di regolamenti locali e/o linee guida prima di avviare qualsiasi attività/procedura studio specifica - Soggetti di sesso maschile o femminile di età compresa tra > = 2 e < 18 anni al momento dell'arruolamento
 - Peso > = 7 kg al momento dello screening, settimana 1
 - Diagnosi con CKD e SHPT sottoposti ad emodialisi / emodiafiltrazione TIW al momento dello screening > = 1 mese
 - Diagnosi di SHPT con la media dei  2 valori consecutivi di iPTH emersi dalle analisi del laboratorio centrale  > 300 pg/mL durante lo screening, in giorni diversi ed entro 2 settimane dall'arruolamento
 
 *Fare riferimento al protocollo per la lista completa
 |  | 
| E.4 | Principal exclusion criteria | 
| - History of congenital long QT syndrome, second or third degree heart block, ventricular tachyarrhythmia's, history of symptomatic ventricular dysrhythmias Torsades de Pointes or other conditions associated with prolonged QT interval. - Anticipated or scheduled parathyroidectomy during the study period.
 - Anticipated or scheduled kidney transplant during the study period.
 - Subject has received a parathyroidectomy within 6 months prior to enrollment.
 - Current malignancy or history of other malignancy, except nonmelanoma skin cancers within the last 5 years. Prior/Concomitant Therapy
 - Use of concomitant medications that may prolong the QTc (eg, ondansetron, albuterol, sotalol, amiodarone, erythromycin, or clarithromycin).
 
 *Please, refers to protocol for the full list.
 |  
| - Anamnesi di sindrome congenita del QT lungo, blocco cardiaco di secondo o terzo grado, tachiaritmia ventricolare, anamnesi di aritmie ventricolari sintomatiche torsioni di punta o altre condizioni associate all'intervallo QT prolungato. - Paratiroidectomia prevista o programmata durante lo studio
 - Trapianto di rene previsto o programmato durante lo studio
 - Il soggetto ha subito una paratiroidectomia nei 6 mesi precedenti l'arruolamento
 - Malignità attuale o storia di altre neoplasie maligne, tranne i tumori della pelle non melanoma negli ultimi 5 anni. Terapia preventiva / concomitante
 - Uso concomitante di farmaci che potrebbero prolungare il QTc (es. ondansetron, albuterolo,sotalolo, amiodarone, eritromicina o claritromicina)
 
 *Fare riferimento al protocollo per la lista completa
 |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Percent change in iPTH from baseline during the efficacy assessment period (EAP) at weeks 20 to 26. |  
| Variazione percentuale nell'iPTH rispetto al basale durante il periodo di valutazione dell'efficacia (EAP) nelle settimane da 20 a 26. |  | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
| Day 1, Week 20, 21, 22, 23, 24, 25 and 26. |  
| Giorno 1, Settimana 20, 21, 22, 23, 24, 25 e 26. |  | 
| E.5.2 | Secondary end point(s) | 
| - Achievement of a > 30% reduction from baseline in mean iPTH during the EAP. - Percent change from baseline in corrected total serum calcium (Ca) and serum phosphorus from baseline during the EAP.
 - Occurrence of corrected serum Ca levels < 8.0 mg/dL (2.0 mmol/L) any time during the study.
 - Changes in laboratory parameters, including clinical chemistry.
 - Occurrence of hypocalcemia (corrected serum Ca levels < 8.4 mg/dL).
 - Etelcalcetide plasma concentrations before and at the end of dialysis after single and multiple doses.
 - Etelcalcetide PK parameters including, but not limited to, maximum plasma concentration (Cmax) and plasma trough concentrations (Cmin).
 |  
| - Raggiungimento di una riduzione > 30% nell'IPTH medio rispetto al basale durante l'EAP. - Variazione percentuale rispetto al basale dei livelli sierici di calcio (Ca) corretto totale e del fosforo sierico rispetto al basale durante l'EAP
 - Rilevazione di livelli di Ca sierici corretti <8,0 mg/dL (2,0 mmol/L) in qualsiasi momento durante lo studio
 - Variazioni nei parametri di laboratorio, inclusi i parametri ematochimici
 - Rilevazione di ipocalcemia (livelli di Ca sierici corretti <8,4 mg/dL)
 - Concentrazioni plasmatiche di etelcalcetide prima e al termine della dialisi dopo dosi singole e multiple
 - Parametri PK dell'etelcalcetide inclusi, ma non limitati a, concentrazione plasmatica massima (Cmax) e concentrazioni plasmatiche a valle (Cmin)
 |  | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
| - Day 1, Week 20, 21, 22, 23, 24, 25 and 26 - Day 1, Week 20, 21, 22, 23, 24, 25 and 26
 - Weekly throughout study
 - Day 1 (pre-dialysis/post-dialysis), Week 5 (pre-dialysis/post-dialysis), Week 9 (pre-dialysis/post-dialysis), Week 13 (pre-dialysis/postdialysis), Week 17 (pre-dialysis/post-dialysis), Week 21 (predialysis/post-dialysis), Week 27 (pre-dialysis), End of Study (predialysis).
 |  
| - Giorno 1, Settimana 20, 21, 22, 23, 24, 25 e 26 - Giorno 1, Settimana 20, 21, 22, 23, 24, 25 e 26
 - Settimanalmente durante lo studio
 - Giorno 1 (pre-dialisi/post-dialisi), Settimana 5 (pre-dialisi/post-dialisi), Settimana 9  (pre-dialisi/post-dialisi), Settimana 13  (pre-dialisi/post-dialisi), Settimana 17  (pre-dialisi/post-dialisi), Settimana 21  (pre-dialisi/post-dialisi), Settimana 27  (pre-dialisi/post-dialisi), conclusione dello studio (pre-dialisi).
 |  | 
| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis | No | 
| E.6.2 | Prophylaxis | No | 
| E.6.3 | Therapy | No | 
| E.6.4 | Safety | Yes | 
| E.6.5 | Efficacy | Yes | 
| E.6.6 | Pharmacokinetic | Yes | 
| E.6.7 | Pharmacodynamic | Yes | 
| E.6.8 | Bioequivalence | No | 
| E.6.9 | Dose response | No | 
| E.6.10 | Pharmacogenetic | No | 
| E.6.11 | Pharmacogenomic | No | 
| E.6.12 | Pharmacoeconomic | No | 
| E.6.13 | Others | No | 
| E.7 | Trial type and phase | 
| E.7.1 | Human pharmacology (Phase I) | No | 
| E.7.1.1 | First administration to humans | No | 
| E.7.1.2 | Bioequivalence study | No | 
| E.7.1.3 | Other | No | 
| E.7.1.3.1 | Other trial type description |  | 
| E.7.2 | Therapeutic exploratory (Phase II) | No | 
| E.7.3 | Therapeutic confirmatory (Phase III) | Yes | 
| E.7.4 | Therapeutic use (Phase IV) | No | 
| E.8 Design of the trial | 
| E.8.1 | Controlled | No | 
| E.8.1.1 | Randomised | No | 
| E.8.1.2 | Open | No | 
| E.8.1.3 | Single blind | No | 
| E.8.1.4 | Double blind | No | 
| E.8.1.5 | Parallel group | No | 
| E.8.1.6 | Cross over | No | 
| E.8.1.7 | Other | No | 
| E.8.2 | Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) | No | 
| E.8.2.2 | Placebo | No | 
| E.8.2.3 | Other | No | 
| E.8.2.4 | Number of treatment arms in the trial | 1 | 
| E.8.3 | The trial involves single site in the Member State concerned | Yes | 
| E.8.4 | The trial involves multiple sites in the Member State concerned | No | 
| E.8.4.1 | Number of sites anticipated in Member State concerned | 1 | 
| E.8.5 | The trial involves multiple Member States | Yes | 
| E.8.5.1 | Number of sites anticipated in the EEA | 20 | 
| E.8.6 Trial involving sites outside the EEA | 
| E.8.6.1 | Trial being conducted both within and outside the EEA | No | 
| E.8.6.2 | Trial being conducted completely outside of the EEA | Information not present in EudraCT | 
| E.8.7 | Trial has a data monitoring committee | No | 
| E.8.8 | Definition of the end of the trial and justification where it is not the last
                        visit of the last subject undergoing the trial |  | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 2 | 
| E.8.9.1 | In the Member State concerned months | 10 | 
| E.8.9.1 | In the Member State concerned days | 9 | 
| E.8.9.2 | In all countries concerned by the trial years | 2 | 
| E.8.9.2 | In all countries concerned by the trial months | 10 | 
| E.8.9.2 | In all countries concerned by the trial days | 9 |