SLC26A3 and congenital secretory chloride diarrhea 1: A group of Finnish geneticists had narrowed the chromosomal location of the presumed gene that was defective in the rare hereditary chloride-losing diarrhea (CLD) to a narrow locus [90], and this enabled them to rapidly identify the DRA gene locus as the locus for all mutations know so far known in CLD [66].