Hepatorenal fibrocystic diseases in children

Eujin Park1, Jiwon M Lee1,2, Yo Han Ahn1

  • 1Department of Pediatrics, Seoul National University Children's Hospital, 101 Daehak-Ro, Jongno-Gu, Seoul, 110-744, Korea.

Insights

Hepatorenale fibrocystic diseases (HRFCDs) in children are most commonly autosomal recessive polycystic kidney disease (ARPKD), followed by nephronophthisis 13 (NPHP13). NPHP13 shows faster renal decline and distinct liver and systemic involvement, aiding HRFCD differential diagnosis.

Area of Science:

  • Pediatric Nephrology
  • Medical Genetics
  • Hepatology

Background:

  • Hepatorenal fibrocystic diseases (HRFCDs) encompass monogenic disorders affecting liver and kidney development.
  • Understanding the spectrum of HRFCDs is crucial for accurate diagnosis and management in pediatric populations.

Purpose of the Study:

  • To determine the etiological distribution of hepatorenal fibrocystic diseases in a cohort of pediatric patients.
  • To characterize the distinct clinical phenotypes associated with different genetic causes of HRFCDs.

Main Methods:

  • Genotype and phenotype analyses were conducted in 36 children diagnosed with HRFCDs.
  • Genetic testing was performed in 22 patients; 14 were clinically diagnosed with autosomal recessive polycystic kidney disease (ARPKD).

Main Results:

  • Autosomal recessive polycystic kidney disease (ARPKD) was the most frequent diagnosis (44.4%), followed by nephronophthisis 13 (NPHP13) (30.6%) and Meckel-Gruber syndrome type 3 (MKS3) (11.1%).
  • NPHP13 patients exhibited more rapid renal function decline and specific hepatic (Caroli disease) and systemic involvement (ocular, neurodevelopmental).
  • MKS3 patients frequently presented with choledochal cysts and severe ocular and neurodevelopmental issues, distinguishing them from ARPKD patients who lacked other organ involvement.

Conclusions:

  • Nephronophthisis 13 (NPHP13) is a significant contributor to the HRFCD spectrum in children.
  • Comprehensive evaluation of NPHP13's multi-organ manifestations is essential for differentiating it within HRFCDs.
Abstract

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