for people ages 6 months to 65 years (full criteria)
at San Francisco, California and other locations
study started
estimated completion
Farzana Perwad, MD



This is a phase 3, prospective, multicenter, randomized, double-blinded, placebo-controlled, study product withdrawal study comparing the efficacy of ADV7103 versus placebo in preventing the development of metabolic acidosis defined by serum bicarbonate level in pediatric (6 months to < 18 years of age) and adult (18 to 65 years of age) subjects with primary dRTA.

Official Title

A Phase 3 Multicenter, Randomized, Double-Blinded, Placebo-Controlled Withdrawal Study Evaluating ADV7103 In Pediatric and Adult Subjects With Distal Renal Tubular Acidosis (dRTA)


The study will target enrolling at least 4 subjects in each of the following age groups: 6 months - 23 months; 2-11 years, and ≥ 12 years. Subjects will be in the study for up to 21 weeks. After screening and enrollment, subjects will participate in an 8-12 week open label period where there dose of ADV7103 will be titrated to effect, then continued for the remainder of the open label period. Periodic measurements of bicarbonate and potassium levels will be collected during this period. Following the open-label period, subjects will enter a 6-day randomized withdrawal period. For this portion of the study, subjects will be admitted to an inpatient setting. A follow-up period up to four weeks on re-established therapy completes the trial. Subjects will have the opportunity to subsequently enter a long-term, open label extension.


Distal Renal Tubular Acidosis Acidosis, Renal Tubular Acidosis Potassium Citrate ADV7103


You can join if…

Open to people ages 6 months to 65 years

  1. Female or male subjects ≥ 6 months of age and ≤ 65 years of age at time of consent;
  2. Subject presents with a previous diagnosis of primary dRTA of at least 4 months duration for subjects < 12 years of age, and at least one year for those ≥ 12 years of age, based on documented history of non-anion gap, hyperchloremic, hypokalemic metabolic acidosis;
  3. Subject requires ≥ 0.9 mEq/kg/day of alkali therapy to maintain serum bicarbonate levels above the LLN for the laboratory providing results;

You CAN'T join if...

  1. Female subject who is pregnant or lactating or has plans for pregnancy during the study;
  2. Subject has evidence of proximal tubule dysfunction (eg, hypophosphatemia, low serum uric acid, glycosuria, or amino aciduria);
  3. Subject presents with another diagnosed condition as a potential etiology for her/his dRTA (eg, systemic lupus erythematosus, Sjogren's syndrome), in the opinion of the Investigator;
  4. Subject requires therapy with potassium sparing diuretics, angiotensin converting enzyme inhibitors, angiotensin II receptor blockers, trimethoprim, drospirenone and other progestins, nephrotoxic antibiotics, penicillins, tacrolimus, or medications known to delay gastric emptying or otherwise interfere with absorption of study product;
  5. Subject has evidence of obstructive uropathy or other findings on renal ultrasound associated with Visit 1 expected to require intervention during the course of the study, in the opinion of the Investigator;
  6. Subject has any of the following laboratory abnormalities associated with Visit 1:
  7. AST and/or ALT > 1.5x upper limit of normal (ULN)
  8. Serum potassium > 5.0 mEq/L or hypokalemia accompanied by clinical symptoms (eg, muscle cramps) or significant ECG changes (eg T wave depression, U wave elevation)
  9. Estimated glomerular filtration rate (eGFR) < 60 mL/min/1.73 m2 (according to the updated Schwartz formula for children and Chronic Kidney Disease - Epidemiology Collaboration [CKD-EPI] formula for adults)
  10. Total bilirubin > ULN, except with known Gilbert's disease.
  11. Subject has been hospitalized or had outpatient surgery (other than minor skin and dRTA disease-related procedures or ear tube placement) in the past 6 months or is planning surgery in the next 6 months;


  • University of California not yet accepting patients
    San Francisco California 94158 United States
  • Children's Hospital Colorado accepting new patients
    Aurora Colorado 80045 United States

Lead Scientist

  • Farzana Perwad, MD
    My research focus is to understand the molecular mechanisms of regulation of phosphorus and vitamin D metabolism in the setting of chronic kidney disease.


accepting new patients
Start Date
Completion Date
Advicenne Pharma
Patient information regarding the disease under study and protocol information
Patient education
Company website
Phase 3
Study Type
Last Updated