Evaluation of phenotypic and genotypic features of children with distal kidney tubular acidosis

Atmis B., Cevizli D., Melek E., Bisgin A., Unal İ., Anarat A., ...Daha Fazla

PEDIATRIC NEPHROLOGY, cilt.35, sa.12, ss.2297-2306, 2020 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 35 Sayı: 12
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1007/s00467-020-04685-2
  • Dergi Adı: PEDIATRIC NEPHROLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, BIOSIS, CAB Abstracts, CINAHL, EMBASE, MEDLINE, Veterinary Science Database
  • Sayfa Sayıları: ss.2297-2306
  • Anahtar Kelimeler: Children, Distal kidney tubular acidosis, Genetic analysis, Long-term prognosis, MUTATIONS, ATP6V1B1, SUBUNIT, GENE
  • Çukurova Üniversitesi Adresli: Evet

Özet

Background The present study aimed to assess genotype-phenotype correlations with long-term prognosis in children with distal kidney tubular acidosis (dKTA). The kidney function of children with dKTA could be impaired in the long-term. Methods Thirty-one children with dKTA from 23 families were included in the present study. Demographic features, growth parameters, clinical manifestations, follow-up results, and genetic analysis results of the patients were recorded. Results Eighteen children (58.1%) were male. The median age at diagnosis was 3 months. The median follow-up period was 77 months and the longest was 23.5 years. Eight (28.8%) patients had chronic kidney disease (CKD) stage 2 or 3. Three patients aged 24, 23, and 19 years had CKD stage 3 with an estimated glomerular filtration rate of 54, 57, and 48 mL/min/1.73 m(2), respectively. Thirteen patients had mutations in theATP6V0A4gene, eight had mutations in theATP6V1B1gene, and three had mutations in theSLC4A1gene. There was no significant correlation between molecular diagnosis and CKD. Growth retardation with a height below a standard deviation (SD) score of - 2 was found in 14 patients (45.1%) at the time of diagnosis. The mean height SD score at the last visit was significantly higher in patients who had adequate metabolic control at > 75% of all visits as compared with that in patients who did not. Conclusion Patients with dKTA usually have a good clinical prognosis in childhood with appropriate treatment; however, dRTA is characterized by deterioration of kidney function in adulthood, particularly after puberty.