It is never too late for a genetic disease: 
a case of a 79-year-old man with persistent hypokalemia.

Conclusion: This study has shown for the first time that aliskiren may represent a reliable and safe treatment as an alternative to potassium-sparing diuretics for Gitelman syndrome.
PMID: 23475471 [PubMed - in process] (Source: Journal of Nephrology)