E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
lithium-induced nephrogenic diabetes insipidus |
lithium-geïnduceerde nefrogene diabetes insipidus |
|
E.1.1.1 | Medical condition in easily understood language |
excessive urine production due to a diminished concentrating ability of the kidney |
overmatige urineproductie door een verminderd concentrerend vermogen van de nier |
|
E.1.1.2 | Therapeutic area | Diseases [C] - Nutritional and Metabolic Diseases [C18] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 14.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10012600 |
E.1.2 | Term | Diabetes insipidus nephrogenic |
E.1.2 | System Organ Class | 10038359 - Renal and urinary disorders |
|
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 14.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10050501 |
E.1.2 | Term | Lithium toxicity |
E.1.2 | System Organ Class | 10022117 - Injury, poisoning and procedural complications |
|
E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To study the effect of acetazolamide on lithium-induced nephrogenic diabetes insipidus measured as urine volume and maximal urinary osmolality.
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Bestuderen van het effect van acetazolamide op lithium-geïnduceerde nefrogene diabetes insipidus m.b.t. de urineproductie en maximale urine osmolaliteit. |
|
E.2.2 | Secondary objectives of the trial |
To explore the possible changes in subjective symptoms (frequency of micturition); vital signs (body weight and blood pressure); blood levels of sodium, potassium, chloride, bicarbonate, lithium, creatinine, haemoglobin and osmolality; urine levels of sodium, potassium, osmolality, urea and creatinine in morning spot urine samples; side effects of acetazolamide treatment; and psychiatric outcome.
|
Bestuderen van de eventuele verandering in subjectieve symptomen (mictie frequentie); vitale parameters (lichaamsgewicht en bloeddruk); serum concentraties van natrium, kalium, chloor, bicarbonaat, lithium, kreatinine, hemoglobine en osmolaliteit; urine concentraties van natrium, kalium, osmolaliteit, ureum en kreatinine in een portie ochtendurine; bijwerkingen van acetazolamide; en de psychiatrische uitkomst. |
|
E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
men and women age > 18 years stable patients treated with lithium for an affective disorder moderate to severe lithium-induced nephrogenic diabetes insipidus (max. urinary concentration >150 and <600 mOsm)
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mannen en vrouwen leeftijd >18 jaar stabiele patiënten behandeld met lithium voor een affectieve stoornis matig tot ernstige lithium-geïnduceerde nefrogene diabetes insipidus (max. urine concentratie >150 en <600 mOsm) |
|
E.4 | Principal exclusion criteria |
pregnancy diabetes mellitus underlying renal disorders significant cardiac/pulmonary comorbidity heart rhythm disorders pre-existent side effects of lithium treatment treatment with hydrochlorothiazide or amiloride in the preceding 2 weeks concomittant treatment with other diuretics hypotension (systolic blood pressure < 100 mm Hg) renal insufficiency hypo/hyperkalemia hypercalcaemia hypo/hyperthyroidism |
zwangerschap diabetes mellitus onderliggende nieraandoening significante cardiale/pulmonale comorbiditeit hartritmestoornissen pre-existente bijwerkingen van de behandeling van lithium behandeling met hydrochloorthiazide of amiloride in de voorafgaande 2 weken gelijktijdige behandeling met overige diuretica hypotensie (systolische bloeddruk < 100 mm Hg) nierinsufficiëntie hypo/hyperkaliëmie hypercalciëmie hypo/hyperthyreoïdie |
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E.5 End points |
E.5.1 | Primary end point(s) |
urine volume and maximal urinary osmolality after dDAVP administration
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urine volume en maximale urine osmolaliteit na toediening van dDAVP |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
urine volume: - daily (questionnaire) - day -7, 0, 7, 14, 21, 28 and 42 (24 h urine collection)
maximal urinary osmolality after dDAVP administration: - day -7 and 28 (before and during treatment with acetazolamide) |
urine volume: - dagelijks (vragenlijst) - dag -7, 0, 7, 14, 21, 28 en 42 (24 uurs urine verzameling)
maximale urine osmolaliteit na toediening van dDAVP: - dag - 7 en 28 (voor en tijdens behandeling met acetazolamide) |
|
E.5.2 | Secondary end point(s) |
changes in subjective symptoms (frequency of micturition); vital signs (body weight and blood pressure); blood levels of sodium, potassium, chloride, bicarbonate, lithium, creatinine, haemoglobin and osmolality; urine levels of sodium, potassium, osmolality, urea and creatinine in morning spot urine samples; side effects of acetazolamide treatment; and psychiatric outcome. |
veranderingen in subjectieve symptomen (mictie frequentie); vitale parameters (lichaamsgewicht en bloeddruk); serum concentraties van natrium, kalium, chloor, bicarbonaat, lithium, kreatinine, hemoglobine en osmolaliteit; urine concentraties van natrium, kalium, osmolaliteit, ureum en kreatinine in een portie ochtendurine; bijwerkingen van de behandeling met acetazolamide; en pyschiatrische uitkomst. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
All above mentioned items: - day -7, 0, 7, 14, 21, 28 and 42 |
Alle bovengenoemde items: - dag -7, 0, 7, 14, 21, 28 en 42 |
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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) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
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.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.5 | The trial involves multiple Member States | No |
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 | No |
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
|
In this pilot study only 6 patients will be included. After 3 patients are included, an interim analysis of the effect of acetazolamide on urine osmolality will be performed. The study will end if: a. none of the first 3 patients show an increase in urine osmolality (>50 mOsm/kg), or b. 6 patients are included. |
In dit pilot onderzoek wordt gestreefd naar een inclusie van 6 patiënten. Na inclusie van de eerste 3 patiënten zal een interim analyse worden verricht m.b.t. het effect van acetazolamide op de urine osmolaliteit. De studie zal worden beëindigd indien: a. geen van de eerste drie patiënten een toename laat zien van de urine osmolaliteit >50 mOsm/kg, of b. 6 patiënten zijn geïncludeerd. |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | 6 |
E.8.9.1 | In the Member State concerned days | 0 |