E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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E.1.1.1 | Medical condition in easily understood language |
Abnormally elevated levels of phosphorus in the blood |
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E.1.1.2 | Therapeutic area | Diseases [C] - Symptoms and general pathology [C23] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 17.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10020711 |
E.1.2 | Term | Hyperphosphataemia |
E.1.2 | System Organ Class | 10027433 - Metabolism and nutrition disorders |
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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 determine the initial starting doses of colestilan (MCI-196) in paediatric subjects. |
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E.2.2 | Secondary objectives of the trial |
• To assess the short-term efficacy of colestilan (MCI-196) compared to standard therapy in paediatric subjects
• To evaluate the short-term safety of colestilan (MCI-196) compared to standard therapy in paediatric subjects |
|
E.2.3 | Trial contains a sub-study | Yes |
E.2.3.1 | Full title, date and version of each sub-study and their related objectives |
Title: Ultrasound Measurement of Intima Media Thickness
Objectives: Ultrasound measurement of intima media thickness of the common carotid artery is planned as a measure of arterial calcification in a sub-study |
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E.3 | Principal inclusion criteria |
• Children aged 2 years to <18 years with CKD stage 5 on dialysis (haemodialysis or peritoneal dialysis) for at least one month
• The subject has a documented diagnosis of hyperphosphataemia, as demonstrated by serum phosphorus (P) levels above the age-related upper limit of normal (Kidney Disease Outcomes Quality Initiative [KDOQI] Clinical Practice Guidelines for Nutrition in Children with CKD updated 2008)
• The subject has been taking CBPB prior to enrolment into the study (i.e., prior to the screening visit)
• The subject must have demonstrated serum P levels >1.5 standard deviation (SD) above the KDOQI 2008 age-related mean value at any time during the wash-out period (this must be demonstrated after stopping treatment with CBPB)
AND
• At the time of randomisation, the subject must have demonstrated an increase in serum P levels from his/her most recent P central laboratory measurement by at least 10% above the pre-wash-out level
Note: After the wash-out period, should a subject fail to meet either or both of the above two last criteria, the subject is permitted to be re-screened once after an interval of at least three months.
For a full list of the inclusion criteria please refer to the protocol. |
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E.4 | Principal exclusion criteria |
• The subject has been diagnosed with hypocholesterolaemia (i.e., cholesterol levels below age-related normal ranges, per
local practices)
• The subject has current clinically significant medical comorbidities, which may substantially compromise subject safety, or expose him/her to undue risk, or interfere significantly with study procedures and which, in the opinion of the Investigator, make the subject unsuitable for inclusion in the study (e.g., the subject currently has or has had a history of seizure disorders, dysphagia, swallowing disorders, predisposition to or current bowel obstruction, ileus or severe gastrointestinal [GI] disorders such as chronic or severe constipation [as judged by the Investigator], intestinal stenosis, intestinal diverticulum, sigmoid colitis, GI ulcers, current or a history of GI bleeding, or major GI tract surgery)
• The subject was treated with a combination of two or more phosphate binders within one month prior to screening
• The subject cannot stop treatment (prescription or over-thecounter) of any of the following orally taken medications
during the wash-out period: any product containing calcium (Ca), magnesium (Mg), aluminium compounds, sevelamer,
lanthanum, ketosteril
• The subject is receiving immunosuppressant treatment for any medical condition at the time of randomisation or is expected to receive such treatment during the course of the study
• The subject is considered unstable on his/her current treatment for CKD within one month prior to screening (e.g., subjects starting treatment with vitamin D or its analogues, or other agents/procedures that may influence bone mineral metabolism [i.e., serum P and Ca levels]).
For a full list of the exclusion criteria please refer to the protocol. |
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary efficacy endpoint of this study is the mean absolute change in serum P levels from baseline to Week 17 or last observation carried forward (LOCF) for all subjects whilst on monotherapy with either fixeddose of colestilan (MCI-196) or standard therapy of calcium-based phosphate binder (CBPB). |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Week 17 or last observation carried forward (LOCF) for all subjects. For further information, please refer to the protocol. |
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E.5.2 | Secondary end point(s) |
Secondary efficacy endpoints (on monotherapy) to be assessed:
1) The proportion of responders in the colestilan (MCI-196) and CBPB treatment arms at Week 17 or LOCF (responders
are defined as subjects demonstrating serum P levels ≤1.5 SD above the KDOQI 2008 age-related mean value)
2) The mean absolute change from baseline to Week 17 (or LOCF) in efficacy laboratory parameters (i.e., Ca, Ca P ion
product [CaxP], intact parathyroid hormone [iPTH], serum glucose, glycosylated haemoglobin [HbA1c], and uric acid)
3) The mean percentage change from baseline to Week 17 (or LOCF) in other efficacy laboratory parameters (i.e., lipid
parameters [low density lipoprotein cholesterol (LDL-C), high density lipoprotein cholesterol (HDL-C), total cholesterol, and triglycerides (TG)])
Safety endpoints to be assessed:
1) The incidence and profile of treatment-emergent adverse events (TEAEs)
2) The incidence of TEAEs of hypercalcaemia and hypocalcaemia
3) Laboratory safety assessments:
a) Morphology parameters: complete blood count, platelet count
b) Biochemistry
- Electrolytes, mineral parameters, and acid-base balance – sodium (Na), potassium (K), chloride (Cl), Mg, Ca, P, CaxP, bicarbonate (HCO3), pH
- Lipids - LDL-C, total cholesterol, HDL-C, TG
- Liver Function Tests and glucose metabolism - aspartate aminotransferase (AST), alanine aminotransferase (ALT), γ-glutamyl transpeptidase (GGT), bilirubin, alkaline phosphatase (ALP)
- Vitamins and microelements - iron and iron-related parameters (total iron-binding capacity and unsaturated iron-binding capacity) – folate, 25-(OH)-vitamin D3, 1,25-(OH)2-vitamin D3, vitamin K
- Other - serum glucose, HbA1c, blood urea nitrogen (BUN), serum creatinine, serum albumin, iPTH, Creactive protein (CRP), creatine kinase (CK), uric acid
c) Other parameters
- Coagulation – prothrombin time (PT), activated partial thromboplastin time (aPTT), international normalised ratio (INR)
- Fibroblast Growth Factor 23 (FGF23)
Other endpoints to be assessed:
1) Acceptability and palatability of formulation (tablet and granules)
2) Proportion of subjects who require either rescue medications or meet any of the stopping rules and are withdrawn from the study and subsequently proceed to the MCI-196-E15 extension study (i.e., fail on monotherapy) |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
As defined in the protocol |
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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 | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | Yes |
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 | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | Yes |
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) | Yes |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
Standard of care (Calcium-based phosphate binder) |
|
E.8.2.4 | Number of treatment arms in the trial | 4 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 4 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 8 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
|
E.8.7 | Trial has a data monitoring committee | Yes |
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 | 0 |
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 | 0 |