Follow-up of a child with congenital chloride diarrhoea caused by a novel mutation.

UNLABELLED: Congenital chloride diarrhoea (CLD) is a rare autosomal recessive disease with chronic secretory diarrhoea and a need for lifelong salt replacement therapy. We describe a male newborn of consanguineous parents with CLD. Postnatally, frequent watery diarrhoea and electrolyte disturbances were noted from the day 8 of his life. At molecular level, a homozygous mutation was detected in the solute carrier family 26 member A3 gene (SLC26A3), confirming the clinical diagnosis of CLD. CONCLUSION: The relatively late onset of persistent clinical and laboratory signs may demonstrate a new clinical course of CLD. These findings support the need of a tight follow-up and monitoring if such a diagnosis is considered.