Outcome of primary tubular tubulopathies diagnosed in pediatric age

Cristina Julia Blázquez Gómez1, Helena Gil-Peña1, Flor A Ordóñez Álvarez1

  • 1Hospital Universitario Central de Asturias, Oviedo, Asturias, España.

Nefrologia
|December 28, 2020
PubMed

Insights

Primary tubulopathies in children cause growth issues and potential kidney damage. Early diagnosis and treatment can improve growth outcomes and manage complications, though long-term monitoring is crucial.

Area of Science:

  • Pediatric Nephrology
  • Genetics
  • Rare Diseases

Background:

  • Primary tubulopathies are rare genetic disorders typically diagnosed in childhood.
  • Advances in genetic diagnostics and therapeutics have significantly impacted their natural history.
  • Understanding the clinical spectrum and long-term outcomes is essential for effective management.

Purpose of the Study:

  • To describe the clinical spectrum of primary tubulopathies diagnosed in a pediatric nephrology unit.
  • To provide long-term follow-up data on growth, renal function, and complications.
  • To highlight the impact of genetic defects on disease presentation and progression.

Main Methods:

  • An observational study involving 53 patients with genetically confirmed primary tubulopathies.
  • Data collection included demographics, clinical manifestations, and laboratory results at diagnosis and during follow-up.
  • Specific tubulopathies analyzed included Gitelman syndrome, distal renal tubular acidosis, cystinuria, and others.

Main Results:

  • The median age at diagnosis was 5.08 years, with short stature (38%) and metabolic decompensations (40%) as common presentations.
  • Long-term follow-up (median 18.92 years) showed significant growth improvement (height SDS from -1.39 to 1.07).
  • 32% experienced reduced estimated glomerular filtration rate (<90ml/min/1.73m²), 3 required renal replacement therapy, and extrarenal complications (stones, deafness) were noted.

Conclusions:

  • Primary tubulopathies are a diverse group of conditions impacting growth and renal function.
  • Treatment can largely reverse growth impairment.
  • Patients face risks of reduced kidney function and significant extrarenal complications requiring ongoing management.
Abstract

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